/* * Copyright 2005-2007 Juan Lang * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA * * This file implements ASN.1 DER encoding of a limited set of types. * It isn't a full ASN.1 implementation. Microsoft implements BER * encoding of many of the basic types in msasn1.dll, but that interface isn't * implemented, so I implement them here. * * References: * "A Layman's Guide to a Subset of ASN.1, BER, and DER", by Burton Kaliski * (available online, look for a PDF copy as the HTML versions tend to have * translation errors.) * * RFC3280, http://www.faqs.org/rfcs/rfc3280.html * * MSDN, especially "Constants for CryptEncodeObject and CryptDecodeObject" */ #include #include #include #include #define NONAMELESSUNION #include "windef.h" #include "winbase.h" #include "wincrypt.h" #include "snmp.h" #include "wine/debug.h" #include "wine/exception.h" #include "wine/unicode.h" #include "crypt32_private.h" WINE_DEFAULT_DEBUG_CHANNEL(cryptasn); WINE_DECLARE_DEBUG_CHANNEL(crypt); typedef BOOL (WINAPI *CryptEncodeObjectFunc)(DWORD, LPCSTR, const void *, BYTE *, DWORD *); /* Prototypes for built-in encoders. They follow the Ex style prototypes. * The dwCertEncodingType and lpszStructType are ignored by the built-in * functions, but the parameters are retained to simplify CryptEncodeObjectEx, * since it must call functions in external DLLs that follow these signatures. */ BOOL WINAPI CRYPT_AsnEncodeOid(DWORD dwCertEncodingType, LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded); static BOOL WINAPI CRYPT_AsnEncodeExtensions(DWORD dwCertEncodingType, LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded); static BOOL WINAPI CRYPT_AsnEncodeSequenceOfAny(DWORD dwCertEncodingType, LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded); static BOOL WINAPI CRYPT_AsnEncodeBool(DWORD dwCertEncodingType, LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded); static BOOL WINAPI CRYPT_AsnEncodePubKeyInfo(DWORD dwCertEncodingType, LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded); static BOOL WINAPI CRYPT_AsnEncodeBits(DWORD dwCertEncodingType, LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded); static BOOL WINAPI CRYPT_AsnEncodeBitsSwapBytes(DWORD dwCertEncodingType, LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded); static BOOL WINAPI CRYPT_AsnEncodeInt(DWORD dwCertEncodingType, LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded); static BOOL WINAPI CRYPT_AsnEncodeInteger(DWORD dwCertEncodingType, LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded); static BOOL WINAPI CRYPT_AsnEncodeUnsignedInteger(DWORD dwCertEncodingType, LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded); static BOOL WINAPI CRYPT_AsnEncodeChoiceOfTime(DWORD dwCertEncodingType, LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded); BOOL CRYPT_EncodeEnsureSpace(DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded, DWORD bytesNeeded) { BOOL ret = TRUE; if (dwFlags & CRYPT_ENCODE_ALLOC_FLAG) { if (pEncodePara && pEncodePara->pfnAlloc) *(BYTE **)pbEncoded = pEncodePara->pfnAlloc(bytesNeeded); else *(BYTE **)pbEncoded = LocalAlloc(0, bytesNeeded); if (!*(BYTE **)pbEncoded) ret = FALSE; else *pcbEncoded = bytesNeeded; } else if (bytesNeeded > *pcbEncoded) { *pcbEncoded = bytesNeeded; SetLastError(ERROR_MORE_DATA); ret = FALSE; } else *pcbEncoded = bytesNeeded; return ret; } BOOL CRYPT_EncodeLen(DWORD len, BYTE *pbEncoded, DWORD *pcbEncoded) { DWORD bytesNeeded, significantBytes = 0; if (len <= 0x7f) bytesNeeded = 1; else { DWORD temp; for (temp = len, significantBytes = sizeof(temp); !(temp & 0xff000000); temp <<= 8, significantBytes--) ; bytesNeeded = significantBytes + 1; } if (!pbEncoded) { *pcbEncoded = bytesNeeded; return TRUE; } if (*pcbEncoded < bytesNeeded) { SetLastError(ERROR_MORE_DATA); return FALSE; } if (len <= 0x7f) *pbEncoded = (BYTE)len; else { DWORD i; *pbEncoded++ = significantBytes | 0x80; for (i = 0; i < significantBytes; i++) { *(pbEncoded + significantBytes - i - 1) = (BYTE)(len & 0xff); len >>= 8; } } *pcbEncoded = bytesNeeded; return TRUE; } BOOL WINAPI CRYPT_AsnEncodeSequence(DWORD dwCertEncodingType, struct AsnEncodeSequenceItem items[], DWORD cItem, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded) { BOOL ret; DWORD i, dataLen = 0; TRACE("%p, %d, %08x, %p, %p, %d\n", items, cItem, dwFlags, pEncodePara, pbEncoded, *pcbEncoded); for (i = 0, ret = TRUE; ret && i < cItem; i++) { ret = items[i].encodeFunc(dwCertEncodingType, NULL, items[i].pvStructInfo, dwFlags & ~CRYPT_ENCODE_ALLOC_FLAG, NULL, NULL, &items[i].size); /* Some functions propagate their errors through the size */ if (!ret) *pcbEncoded = items[i].size; dataLen += items[i].size; } if (ret) { DWORD lenBytes, bytesNeeded; CRYPT_EncodeLen(dataLen, NULL, &lenBytes); bytesNeeded = 1 + lenBytes + dataLen; if (!pbEncoded) *pcbEncoded = bytesNeeded; else { if ((ret = CRYPT_EncodeEnsureSpace(dwFlags, pEncodePara, pbEncoded, pcbEncoded, bytesNeeded))) { if (dwFlags & CRYPT_ENCODE_ALLOC_FLAG) pbEncoded = *(BYTE **)pbEncoded; *pbEncoded++ = ASN_SEQUENCE; CRYPT_EncodeLen(dataLen, pbEncoded, &lenBytes); pbEncoded += lenBytes; for (i = 0; ret && i < cItem; i++) { ret = items[i].encodeFunc(dwCertEncodingType, NULL, items[i].pvStructInfo, dwFlags & ~CRYPT_ENCODE_ALLOC_FLAG, NULL, pbEncoded, &items[i].size); /* Some functions propagate their errors through the size */ if (!ret) *pcbEncoded = items[i].size; pbEncoded += items[i].size; } } } } TRACE("returning %d (%08x)\n", ret, GetLastError()); return ret; } BOOL WINAPI CRYPT_AsnEncodeConstructed(DWORD dwCertEncodingType, LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded) { BOOL ret; const struct AsnConstructedItem *item = (const struct AsnConstructedItem *)pvStructInfo; DWORD len; if ((ret = item->encodeFunc(dwCertEncodingType, lpszStructType, item->pvStructInfo, dwFlags & ~CRYPT_ENCODE_ALLOC_FLAG, NULL, NULL, &len))) { DWORD dataLen, bytesNeeded; CRYPT_EncodeLen(len, NULL, &dataLen); bytesNeeded = 1 + dataLen + len; if (!pbEncoded) *pcbEncoded = bytesNeeded; else if ((ret = CRYPT_EncodeEnsureSpace(dwFlags, pEncodePara, pbEncoded, pcbEncoded, bytesNeeded))) { if (dwFlags & CRYPT_ENCODE_ALLOC_FLAG) pbEncoded = *(BYTE **)pbEncoded; *pbEncoded++ = ASN_CONTEXT | ASN_CONSTRUCTOR | item->tag; CRYPT_EncodeLen(len, pbEncoded, &dataLen); pbEncoded += dataLen; ret = item->encodeFunc(dwCertEncodingType, lpszStructType, item->pvStructInfo, dwFlags & ~CRYPT_ENCODE_ALLOC_FLAG, NULL, pbEncoded, &len); if (!ret) { /* Some functions propagate their errors through the size */ *pcbEncoded = len; } } } else { /* Some functions propagate their errors through the size */ *pcbEncoded = len; } return ret; } struct AsnEncodeTagSwappedItem { BYTE tag; const void *pvStructInfo; CryptEncodeObjectExFunc encodeFunc; }; /* Sort of a wacky hack, it encodes something using the struct * AsnEncodeTagSwappedItem's encodeFunc, then replaces the tag byte with the tag * given in the struct AsnEncodeTagSwappedItem. */ static BOOL WINAPI CRYPT_AsnEncodeSwapTag(DWORD dwCertEncodingType, LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded) { BOOL ret; const struct AsnEncodeTagSwappedItem *item = (const struct AsnEncodeTagSwappedItem *)pvStructInfo; ret = item->encodeFunc(dwCertEncodingType, lpszStructType, item->pvStructInfo, dwFlags, pEncodePara, pbEncoded, pcbEncoded); if (ret && pbEncoded) *pbEncoded = item->tag; return ret; } static BOOL WINAPI CRYPT_AsnEncodeCertVersion(DWORD dwCertEncodingType, LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded) { const DWORD *ver = (const DWORD *)pvStructInfo; BOOL ret; /* CERT_V1 is not encoded */ if (*ver == CERT_V1) { *pcbEncoded = 0; ret = TRUE; } else { struct AsnConstructedItem item = { 0, ver, CRYPT_AsnEncodeInt }; ret = CRYPT_AsnEncodeConstructed(dwCertEncodingType, X509_INTEGER, &item, dwFlags, pEncodePara, pbEncoded, pcbEncoded); } return ret; } static BOOL WINAPI CRYPT_CopyEncodedBlob(DWORD dwCertEncodingType, LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded) { const CRYPT_DER_BLOB *blob = (const CRYPT_DER_BLOB *)pvStructInfo; BOOL ret; if (!pbEncoded) { *pcbEncoded = blob->cbData; ret = TRUE; } else { if ((ret = CRYPT_EncodeEnsureSpace(dwFlags, pEncodePara, pbEncoded, pcbEncoded, blob->cbData))) { if (dwFlags & CRYPT_ENCODE_ALLOC_FLAG) pbEncoded = *(BYTE **)pbEncoded; if (blob->cbData) memcpy(pbEncoded, blob->pbData, blob->cbData); *pcbEncoded = blob->cbData; ret = TRUE; } } return ret; } static BOOL WINAPI CRYPT_AsnEncodeValidity(DWORD dwCertEncodingType, LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded) { BOOL ret; /* This has two filetimes in a row, a NotBefore and a NotAfter */ const FILETIME *timePtr = (const FILETIME *)pvStructInfo; struct AsnEncodeSequenceItem items[] = { { timePtr++, CRYPT_AsnEncodeChoiceOfTime, 0 }, { timePtr, CRYPT_AsnEncodeChoiceOfTime, 0 }, }; ret = CRYPT_AsnEncodeSequence(dwCertEncodingType, items, sizeof(items) / sizeof(items[0]), dwFlags, pEncodePara, pbEncoded, pcbEncoded); return ret; } /* Like CRYPT_AsnEncodeAlgorithmId, but encodes parameters as an asn.1 NULL * if they are empty. */ static BOOL WINAPI CRYPT_AsnEncodeAlgorithmIdWithNullParams( DWORD dwCertEncodingType, LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded) { const CRYPT_ALGORITHM_IDENTIFIER *algo = (const CRYPT_ALGORITHM_IDENTIFIER *)pvStructInfo; static const BYTE asn1Null[] = { ASN_NULL, 0 }; static const CRYPT_DATA_BLOB nullBlob = { sizeof(asn1Null), (LPBYTE)asn1Null }; BOOL ret; struct AsnEncodeSequenceItem items[2] = { { algo->pszObjId, CRYPT_AsnEncodeOid, 0 }, { NULL, CRYPT_CopyEncodedBlob, 0 }, }; if (algo->Parameters.cbData) items[1].pvStructInfo = &algo->Parameters; else items[1].pvStructInfo = &nullBlob; ret = CRYPT_AsnEncodeSequence(dwCertEncodingType, items, sizeof(items) / sizeof(items[0]), dwFlags, pEncodePara, pbEncoded, pcbEncoded); return ret; } static BOOL WINAPI CRYPT_AsnEncodeAlgorithmId(DWORD dwCertEncodingType, LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded) { const CRYPT_ALGORITHM_IDENTIFIER *algo = (const CRYPT_ALGORITHM_IDENTIFIER *)pvStructInfo; BOOL ret; struct AsnEncodeSequenceItem items[] = { { algo->pszObjId, CRYPT_AsnEncodeOid, 0 }, { &algo->Parameters, CRYPT_CopyEncodedBlob, 0 }, }; ret = CRYPT_AsnEncodeSequence(dwCertEncodingType, items, sizeof(items) / sizeof(items[0]), dwFlags, pEncodePara, pbEncoded, pcbEncoded); return ret; } static BOOL WINAPI CRYPT_AsnEncodePubKeyInfo(DWORD dwCertEncodingType, LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded) { BOOL ret; __TRY { const CERT_PUBLIC_KEY_INFO *info = (const CERT_PUBLIC_KEY_INFO *)pvStructInfo; struct AsnEncodeSequenceItem items[] = { { &info->Algorithm, CRYPT_AsnEncodeAlgorithmId, 0 }, { &info->PublicKey, CRYPT_AsnEncodeBits, 0 }, }; TRACE("Encoding public key with OID %s\n", debugstr_a(info->Algorithm.pszObjId)); ret = CRYPT_AsnEncodeSequence(dwCertEncodingType, items, sizeof(items) / sizeof(items[0]), dwFlags, pEncodePara, pbEncoded, pcbEncoded); } __EXCEPT_PAGE_FAULT { SetLastError(STATUS_ACCESS_VIOLATION); ret = FALSE; } __ENDTRY return ret; } static BOOL WINAPI CRYPT_AsnEncodeCert(DWORD dwCertEncodingType, LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded) { BOOL ret; __TRY { const CERT_SIGNED_CONTENT_INFO *info = (const CERT_SIGNED_CONTENT_INFO *)pvStructInfo; struct AsnEncodeSequenceItem items[] = { { &info->ToBeSigned, CRYPT_CopyEncodedBlob, 0 }, { &info->SignatureAlgorithm, CRYPT_AsnEncodeAlgorithmId, 0 }, { &info->Signature, CRYPT_AsnEncodeBitsSwapBytes, 0 }, }; if (dwFlags & CRYPT_ENCODE_NO_SIGNATURE_BYTE_REVERSAL_FLAG) items[2].encodeFunc = CRYPT_AsnEncodeBits; ret = CRYPT_AsnEncodeSequence(dwCertEncodingType, items, sizeof(items) / sizeof(items[0]), dwFlags, pEncodePara, pbEncoded, pcbEncoded); } __EXCEPT_PAGE_FAULT { SetLastError(STATUS_ACCESS_VIOLATION); ret = FALSE; } __ENDTRY return ret; } /* Like in Windows, this blithely ignores the validity of the passed-in * CERT_INFO, and just encodes it as-is. The resulting encoded data may not * decode properly, see CRYPT_AsnDecodeCertInfo. */ static BOOL WINAPI CRYPT_AsnEncodeCertInfo(DWORD dwCertEncodingType, LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded) { BOOL ret; __TRY { const CERT_INFO *info = (const CERT_INFO *)pvStructInfo; struct AsnEncodeSequenceItem items[10] = { { &info->dwVersion, CRYPT_AsnEncodeCertVersion, 0 }, { &info->SerialNumber, CRYPT_AsnEncodeInteger, 0 }, { &info->SignatureAlgorithm, CRYPT_AsnEncodeAlgorithmId, 0 }, { &info->Issuer, CRYPT_CopyEncodedBlob, 0 }, { &info->NotBefore, CRYPT_AsnEncodeValidity, 0 }, { &info->Subject, CRYPT_CopyEncodedBlob, 0 }, { &info->SubjectPublicKeyInfo, CRYPT_AsnEncodePubKeyInfo, 0 }, { 0 } }; struct AsnConstructedItem constructed[3] = { { 0 } }; DWORD cItem = 7, cConstructed = 0; if (info->IssuerUniqueId.cbData) { constructed[cConstructed].tag = 1; constructed[cConstructed].pvStructInfo = &info->IssuerUniqueId; constructed[cConstructed].encodeFunc = CRYPT_AsnEncodeBits; items[cItem].pvStructInfo = &constructed[cConstructed]; items[cItem].encodeFunc = CRYPT_AsnEncodeConstructed; cConstructed++; cItem++; } if (info->SubjectUniqueId.cbData) { constructed[cConstructed].tag = 2; constructed[cConstructed].pvStructInfo = &info->SubjectUniqueId; constructed[cConstructed].encodeFunc = CRYPT_AsnEncodeBits; items[cItem].pvStructInfo = &constructed[cConstructed]; items[cItem].encodeFunc = CRYPT_AsnEncodeConstructed; cConstructed++; cItem++; } if (info->cExtension) { constructed[cConstructed].tag = 3; constructed[cConstructed].pvStructInfo = &info->cExtension; constructed[cConstructed].encodeFunc = CRYPT_AsnEncodeExtensions; items[cItem].pvStructInfo = &constructed[cConstructed]; items[cItem].encodeFunc = CRYPT_AsnEncodeConstructed; cConstructed++; cItem++; } ret = CRYPT_AsnEncodeSequence(dwCertEncodingType, items, cItem, dwFlags, pEncodePara, pbEncoded, pcbEncoded); } __EXCEPT_PAGE_FAULT { SetLastError(STATUS_ACCESS_VIOLATION); ret = FALSE; } __ENDTRY return ret; } static BOOL WINAPI CRYPT_AsnEncodeCRLEntry(const CRL_ENTRY *entry, BYTE *pbEncoded, DWORD *pcbEncoded) { struct AsnEncodeSequenceItem items[3] = { { &entry->SerialNumber, CRYPT_AsnEncodeInteger, 0 }, { &entry->RevocationDate, CRYPT_AsnEncodeChoiceOfTime, 0 }, { 0 } }; DWORD cItem = 2; BOOL ret; TRACE("%p, %p, %p\n", entry, pbEncoded, pcbEncoded); if (entry->cExtension) { items[cItem].pvStructInfo = &entry->cExtension; items[cItem].encodeFunc = CRYPT_AsnEncodeExtensions; cItem++; } ret = CRYPT_AsnEncodeSequence(X509_ASN_ENCODING, items, cItem, 0, NULL, pbEncoded, pcbEncoded); TRACE("returning %d (%08x)\n", ret, GetLastError()); return ret; } static BOOL WINAPI CRYPT_AsnEncodeCRLEntries(DWORD dwCertEncodingType, LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded) { DWORD cCRLEntry = *(const DWORD *)pvStructInfo; DWORD bytesNeeded, dataLen, lenBytes, i; const CRL_ENTRY *rgCRLEntry = *(const CRL_ENTRY *const *) ((const BYTE *)pvStructInfo + sizeof(DWORD)); BOOL ret = TRUE; for (i = 0, dataLen = 0; ret && i < cCRLEntry; i++) { DWORD size; ret = CRYPT_AsnEncodeCRLEntry(&rgCRLEntry[i], NULL, &size); if (ret) dataLen += size; } CRYPT_EncodeLen(dataLen, NULL, &lenBytes); bytesNeeded = 1 + lenBytes + dataLen; if (!pbEncoded) *pcbEncoded = bytesNeeded; else { if ((ret = CRYPT_EncodeEnsureSpace(dwFlags, pEncodePara, pbEncoded, pcbEncoded, bytesNeeded))) { if (dwFlags & CRYPT_ENCODE_ALLOC_FLAG) pbEncoded = *(BYTE **)pbEncoded; *pbEncoded++ = ASN_SEQUENCEOF; CRYPT_EncodeLen(dataLen, pbEncoded, &lenBytes); pbEncoded += lenBytes; for (i = 0; i < cCRLEntry; i++) { DWORD size = dataLen; ret = CRYPT_AsnEncodeCRLEntry(&rgCRLEntry[i], pbEncoded, &size); pbEncoded += size; dataLen -= size; } } } return ret; } static BOOL WINAPI CRYPT_AsnEncodeCRLVersion(DWORD dwCertEncodingType, LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded) { const DWORD *ver = (const DWORD *)pvStructInfo; BOOL ret; /* CRL_V1 is not encoded */ if (*ver == CRL_V1) { *pcbEncoded = 0; ret = TRUE; } else ret = CRYPT_AsnEncodeInt(dwCertEncodingType, X509_INTEGER, ver, dwFlags, pEncodePara, pbEncoded, pcbEncoded); return ret; } /* Like in Windows, this blithely ignores the validity of the passed-in * CRL_INFO, and just encodes it as-is. The resulting encoded data may not * decode properly, see CRYPT_AsnDecodeCRLInfo. */ static BOOL WINAPI CRYPT_AsnEncodeCRLInfo(DWORD dwCertEncodingType, LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded) { BOOL ret; __TRY { const CRL_INFO *info = (const CRL_INFO *)pvStructInfo; struct AsnEncodeSequenceItem items[7] = { { &info->dwVersion, CRYPT_AsnEncodeCRLVersion, 0 }, { &info->SignatureAlgorithm, CRYPT_AsnEncodeAlgorithmId, 0 }, { &info->Issuer, CRYPT_CopyEncodedBlob, 0 }, { &info->ThisUpdate, CRYPT_AsnEncodeChoiceOfTime, 0 }, { 0 } }; struct AsnConstructedItem constructed[1] = { { 0 } }; DWORD cItem = 4, cConstructed = 0; if (info->NextUpdate.dwLowDateTime || info->NextUpdate.dwHighDateTime) { items[cItem].pvStructInfo = &info->NextUpdate; items[cItem].encodeFunc = CRYPT_AsnEncodeChoiceOfTime; cItem++; } if (info->cCRLEntry) { items[cItem].pvStructInfo = &info->cCRLEntry; items[cItem].encodeFunc = CRYPT_AsnEncodeCRLEntries; cItem++; } if (info->cExtension) { constructed[cConstructed].tag = 0; constructed[cConstructed].pvStructInfo = &info->cExtension; constructed[cConstructed].encodeFunc = CRYPT_AsnEncodeExtensions; items[cItem].pvStructInfo = &constructed[cConstructed]; items[cItem].encodeFunc = CRYPT_AsnEncodeConstructed; cConstructed++; cItem++; } ret = CRYPT_AsnEncodeSequence(dwCertEncodingType, items, cItem, dwFlags, pEncodePara, pbEncoded, pcbEncoded); } __EXCEPT_PAGE_FAULT { SetLastError(STATUS_ACCESS_VIOLATION); ret = FALSE; } __ENDTRY return ret; } static BOOL CRYPT_AsnEncodeExtension(CERT_EXTENSION *ext, BYTE *pbEncoded, DWORD *pcbEncoded) { BOOL ret; struct AsnEncodeSequenceItem items[3] = { { ext->pszObjId, CRYPT_AsnEncodeOid, 0 }, { NULL, NULL, 0 }, { NULL, NULL, 0 }, }; DWORD cItem = 1; TRACE("%p, %p, %d\n", ext, pbEncoded, *pcbEncoded); if (ext->fCritical) { items[cItem].pvStructInfo = &ext->fCritical; items[cItem].encodeFunc = CRYPT_AsnEncodeBool; cItem++; } items[cItem].pvStructInfo = &ext->Value; items[cItem].encodeFunc = CRYPT_AsnEncodeOctets; cItem++; ret = CRYPT_AsnEncodeSequence(X509_ASN_ENCODING, items, cItem, 0, NULL, pbEncoded, pcbEncoded); TRACE("returning %d (%08x)\n", ret, GetLastError()); return ret; } static BOOL WINAPI CRYPT_AsnEncodeExtensions(DWORD dwCertEncodingType, LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded) { BOOL ret; __TRY { DWORD bytesNeeded, dataLen, lenBytes, i; const CERT_EXTENSIONS *exts = (const CERT_EXTENSIONS *)pvStructInfo; ret = TRUE; for (i = 0, dataLen = 0; ret && i < exts->cExtension; i++) { DWORD size; ret = CRYPT_AsnEncodeExtension(&exts->rgExtension[i], NULL, &size); if (ret) dataLen += size; } CRYPT_EncodeLen(dataLen, NULL, &lenBytes); bytesNeeded = 1 + lenBytes + dataLen; if (!pbEncoded) *pcbEncoded = bytesNeeded; else { if ((ret = CRYPT_EncodeEnsureSpace(dwFlags, pEncodePara, pbEncoded, pcbEncoded, bytesNeeded))) { if (dwFlags & CRYPT_ENCODE_ALLOC_FLAG) pbEncoded = *(BYTE **)pbEncoded; *pbEncoded++ = ASN_SEQUENCEOF; CRYPT_EncodeLen(dataLen, pbEncoded, &lenBytes); pbEncoded += lenBytes; for (i = 0; i < exts->cExtension; i++) { DWORD size = dataLen; ret = CRYPT_AsnEncodeExtension(&exts->rgExtension[i], pbEncoded, &size); pbEncoded += size; dataLen -= size; } } } } __EXCEPT_PAGE_FAULT { SetLastError(STATUS_ACCESS_VIOLATION); ret = FALSE; } __ENDTRY return ret; } BOOL WINAPI CRYPT_AsnEncodeOid(DWORD dwCertEncodingType, LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded) { LPCSTR pszObjId = (LPCSTR)pvStructInfo; DWORD bytesNeeded = 0, lenBytes; BOOL ret = TRUE; int firstPos = 0; BYTE firstByte = 0; TRACE("%s\n", debugstr_a(pszObjId)); if (pszObjId) { const char *ptr; int val1, val2; if (sscanf(pszObjId, "%d.%d.%n", &val1, &val2, &firstPos) != 2) { SetLastError(CRYPT_E_ASN1_ERROR); return FALSE; } bytesNeeded++; firstByte = val1 * 40 + val2; ptr = pszObjId + firstPos; while (ret && *ptr) { int pos; /* note I assume each component is at most 32-bits long in base 2 */ if (sscanf(ptr, "%d%n", &val1, &pos) == 1) { if (val1 >= 0x10000000) bytesNeeded += 5; else if (val1 >= 0x200000) bytesNeeded += 4; else if (val1 >= 0x4000) bytesNeeded += 3; else if (val1 >= 0x80) bytesNeeded += 2; else bytesNeeded += 1; ptr += pos; if (*ptr == '.') ptr++; } else { SetLastError(CRYPT_E_ASN1_ERROR); return FALSE; } } CRYPT_EncodeLen(bytesNeeded, NULL, &lenBytes); } else lenBytes = 1; bytesNeeded += 1 + lenBytes; if (pbEncoded) { if (*pcbEncoded < bytesNeeded) { SetLastError(ERROR_MORE_DATA); ret = FALSE; } else { *pbEncoded++ = ASN_OBJECTIDENTIFIER; CRYPT_EncodeLen(bytesNeeded - 1 - lenBytes, pbEncoded, &lenBytes); pbEncoded += lenBytes; if (pszObjId) { const char *ptr; int val, pos; *pbEncoded++ = firstByte; ptr = pszObjId + firstPos; while (ret && *ptr) { sscanf(ptr, "%d%n", &val, &pos); { unsigned char outBytes[5]; int numBytes, i; if (val >= 0x10000000) numBytes = 5; else if (val >= 0x200000) numBytes = 4; else if (val >= 0x4000) numBytes = 3; else if (val >= 0x80) numBytes = 2; else numBytes = 1; for (i = numBytes; i > 0; i--) { outBytes[i - 1] = val & 0x7f; val >>= 7; } for (i = 0; i < numBytes - 1; i++) *pbEncoded++ = outBytes[i] | 0x80; *pbEncoded++ = outBytes[i]; ptr += pos; if (*ptr == '.') ptr++; } } } } } *pcbEncoded = bytesNeeded; return ret; } static BOOL CRYPT_AsnEncodeStringCoerce(const CERT_NAME_VALUE *value, BYTE tag, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded) { BOOL ret = TRUE; LPCSTR str = (LPCSTR)value->Value.pbData; DWORD bytesNeeded, lenBytes, encodedLen; encodedLen = value->Value.cbData ? value->Value.cbData : lstrlenA(str); CRYPT_EncodeLen(encodedLen, NULL, &lenBytes); bytesNeeded = 1 + lenBytes + encodedLen; if (!pbEncoded) *pcbEncoded = bytesNeeded; else { if ((ret = CRYPT_EncodeEnsureSpace(dwFlags, pEncodePara, pbEncoded, pcbEncoded, bytesNeeded))) { if (dwFlags & CRYPT_ENCODE_ALLOC_FLAG) pbEncoded = *(BYTE **)pbEncoded; *pbEncoded++ = tag; CRYPT_EncodeLen(encodedLen, pbEncoded, &lenBytes); pbEncoded += lenBytes; memcpy(pbEncoded, str, encodedLen); } } return ret; } static BOOL CRYPT_AsnEncodeBMPString(const CERT_NAME_VALUE *value, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded) { BOOL ret = TRUE; LPCWSTR str = (LPCWSTR)value->Value.pbData; DWORD bytesNeeded, lenBytes, strLen; strLen = value->Value.cbData ? value->Value.cbData / sizeof(WCHAR) : lstrlenW(str); CRYPT_EncodeLen(strLen * 2, NULL, &lenBytes); bytesNeeded = 1 + lenBytes + strLen * 2; if (!pbEncoded) *pcbEncoded = bytesNeeded; else { if ((ret = CRYPT_EncodeEnsureSpace(dwFlags, pEncodePara, pbEncoded, pcbEncoded, bytesNeeded))) { DWORD i; if (dwFlags & CRYPT_ENCODE_ALLOC_FLAG) pbEncoded = *(BYTE **)pbEncoded; *pbEncoded++ = ASN_BMPSTRING; CRYPT_EncodeLen(strLen * 2, pbEncoded, &lenBytes); pbEncoded += lenBytes; for (i = 0; i < strLen; i++) { *pbEncoded++ = (str[i] & 0xff00) >> 8; *pbEncoded++ = str[i] & 0x00ff; } } } return ret; } static BOOL CRYPT_AsnEncodeUTF8String(const CERT_NAME_VALUE *value, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded) { BOOL ret = TRUE; LPCWSTR str = (LPCWSTR)value->Value.pbData; DWORD bytesNeeded, lenBytes, encodedLen, strLen; strLen = value->Value.cbData ? value->Value.cbData / sizeof(WCHAR) : lstrlenW(str); encodedLen = WideCharToMultiByte(CP_UTF8, 0, str, strLen, NULL, 0, NULL, NULL); CRYPT_EncodeLen(encodedLen, NULL, &lenBytes); bytesNeeded = 1 + lenBytes + encodedLen; if (!pbEncoded) *pcbEncoded = bytesNeeded; else { if ((ret = CRYPT_EncodeEnsureSpace(dwFlags, pEncodePara, pbEncoded, pcbEncoded, bytesNeeded))) { if (dwFlags & CRYPT_ENCODE_ALLOC_FLAG) pbEncoded = *(BYTE **)pbEncoded; *pbEncoded++ = ASN_UTF8STRING; CRYPT_EncodeLen(encodedLen, pbEncoded, &lenBytes); pbEncoded += lenBytes; WideCharToMultiByte(CP_UTF8, 0, str, strLen, (LPSTR)pbEncoded, bytesNeeded - lenBytes - 1, NULL, NULL); } } return ret; } static BOOL WINAPI CRYPT_AsnEncodeNameValue(DWORD dwCertEncodingType, LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded) { BOOL ret = TRUE; __TRY { const CERT_NAME_VALUE *value = (const CERT_NAME_VALUE *)pvStructInfo; switch (value->dwValueType) { case CERT_RDN_ANY_TYPE: /* explicitly disallowed */ SetLastError(E_INVALIDARG); ret = FALSE; break; case CERT_RDN_ENCODED_BLOB: ret = CRYPT_CopyEncodedBlob(dwCertEncodingType, NULL, &value->Value, dwFlags, pEncodePara, pbEncoded, pcbEncoded); break; case CERT_RDN_OCTET_STRING: ret = CRYPT_AsnEncodeStringCoerce(value, ASN_OCTETSTRING, dwFlags, pEncodePara, pbEncoded, pcbEncoded); break; case CERT_RDN_NUMERIC_STRING: ret = CRYPT_AsnEncodeStringCoerce(value, ASN_NUMERICSTRING, dwFlags, pEncodePara, pbEncoded, pcbEncoded); break; case CERT_RDN_PRINTABLE_STRING: ret = CRYPT_AsnEncodeStringCoerce(value, ASN_PRINTABLESTRING, dwFlags, pEncodePara, pbEncoded, pcbEncoded); break; case CERT_RDN_TELETEX_STRING: ret = CRYPT_AsnEncodeStringCoerce(value, ASN_T61STRING, dwFlags, pEncodePara, pbEncoded, pcbEncoded); break; case CERT_RDN_VIDEOTEX_STRING: ret = CRYPT_AsnEncodeStringCoerce(value, ASN_VIDEOTEXSTRING, dwFlags, pEncodePara, pbEncoded, pcbEncoded); break; case CERT_RDN_IA5_STRING: ret = CRYPT_AsnEncodeStringCoerce(value, ASN_IA5STRING, dwFlags, pEncodePara, pbEncoded, pcbEncoded); break; case CERT_RDN_GRAPHIC_STRING: ret = CRYPT_AsnEncodeStringCoerce(value, ASN_GRAPHICSTRING, dwFlags, pEncodePara, pbEncoded, pcbEncoded); break; case CERT_RDN_VISIBLE_STRING: ret = CRYPT_AsnEncodeStringCoerce(value, ASN_VISIBLESTRING, dwFlags, pEncodePara, pbEncoded, pcbEncoded); break; case CERT_RDN_GENERAL_STRING: ret = CRYPT_AsnEncodeStringCoerce(value, ASN_GENERALSTRING, dwFlags, pEncodePara, pbEncoded, pcbEncoded); break; case CERT_RDN_UNIVERSAL_STRING: FIXME("CERT_RDN_UNIVERSAL_STRING: unimplemented\n"); SetLastError(CRYPT_E_ASN1_CHOICE); ret = FALSE; break; case CERT_RDN_BMP_STRING: ret = CRYPT_AsnEncodeBMPString(value, dwFlags, pEncodePara, pbEncoded, pcbEncoded); break; case CERT_RDN_UTF8_STRING: ret = CRYPT_AsnEncodeUTF8String(value, dwFlags, pEncodePara, pbEncoded, pcbEncoded); break; default: SetLastError(CRYPT_E_ASN1_CHOICE); ret = FALSE; } } __EXCEPT_PAGE_FAULT { SetLastError(STATUS_ACCESS_VIOLATION); ret = FALSE; } __ENDTRY return ret; } static BOOL WINAPI CRYPT_AsnEncodeRdnAttr(DWORD dwCertEncodingType, CERT_RDN_ATTR *attr, CryptEncodeObjectExFunc nameValueEncodeFunc, BYTE *pbEncoded, DWORD *pcbEncoded) { DWORD bytesNeeded = 0, lenBytes, size; BOOL ret; ret = CRYPT_AsnEncodeOid(dwCertEncodingType, NULL, attr->pszObjId, 0, NULL, NULL, &size); if (ret) { bytesNeeded += size; /* hack: a CERT_RDN_ATTR is identical to a CERT_NAME_VALUE beginning * with dwValueType, so "cast" it to get its encoded size */ ret = nameValueEncodeFunc(dwCertEncodingType, NULL, (CERT_NAME_VALUE *)&attr->dwValueType, 0, NULL, NULL, &size); if (ret) { bytesNeeded += size; CRYPT_EncodeLen(bytesNeeded, NULL, &lenBytes); bytesNeeded += 1 + lenBytes; if (pbEncoded) { if (*pcbEncoded < bytesNeeded) { SetLastError(ERROR_MORE_DATA); ret = FALSE; } else { *pbEncoded++ = ASN_SEQUENCE; CRYPT_EncodeLen(bytesNeeded - lenBytes - 1, pbEncoded, &lenBytes); pbEncoded += lenBytes; size = bytesNeeded - 1 - lenBytes; ret = CRYPT_AsnEncodeOid(dwCertEncodingType, NULL, attr->pszObjId, 0, NULL, pbEncoded, &size); if (ret) { pbEncoded += size; size = bytesNeeded - 1 - lenBytes - size; ret = nameValueEncodeFunc(dwCertEncodingType, NULL, (CERT_NAME_VALUE *)&attr->dwValueType, 0, NULL, pbEncoded, &size); if (!ret) *pcbEncoded = size; } } } if (ret) *pcbEncoded = bytesNeeded; } else { /* Have to propagate index of failing character */ *pcbEncoded = size; } } return ret; } static int BLOBComp(const void *l, const void *r) { const CRYPT_DER_BLOB *a = (const CRYPT_DER_BLOB *)l, *b = (const CRYPT_DER_BLOB *)r; int ret; if (!(ret = memcmp(a->pbData, b->pbData, min(a->cbData, b->cbData)))) ret = a->cbData - b->cbData; return ret; } typedef struct _CRYPT_SET_OF { DWORD cValue; PCRYPT_DER_BLOB rgValue; } CRYPT_SET_OF; /* This encodes a SET OF, which in DER must be lexicographically sorted. */ static BOOL WINAPI CRYPT_DEREncodeSet(DWORD dwCertEncodingType, LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded) { const CRYPT_SET_OF *set = (const CRYPT_SET_OF *)pvStructInfo; DWORD bytesNeeded = 0, lenBytes, i; BOOL ret; for (i = 0; i < set->cValue; i++) bytesNeeded += set->rgValue[i].cbData; CRYPT_EncodeLen(bytesNeeded, NULL, &lenBytes); bytesNeeded += 1 + lenBytes; if (!pbEncoded) { *pcbEncoded = bytesNeeded; ret = TRUE; } else if ((ret = CRYPT_EncodeEnsureSpace(dwFlags, pEncodePara, pbEncoded, pcbEncoded, bytesNeeded))) { if (dwFlags & CRYPT_ENCODE_ALLOC_FLAG) pbEncoded = *(BYTE **)pbEncoded; qsort(set->rgValue, set->cValue, sizeof(CRYPT_DER_BLOB), BLOBComp); *pbEncoded++ = ASN_CONSTRUCTOR | ASN_SETOF; CRYPT_EncodeLen(bytesNeeded - lenBytes - 1, pbEncoded, &lenBytes); pbEncoded += lenBytes; for (i = 0; ret && i < set->cValue; i++) { memcpy(pbEncoded, set->rgValue[i].pbData, set->rgValue[i].cbData); pbEncoded += set->rgValue[i].cbData; } } return ret; } struct DERSetDescriptor { DWORD cItems; const void *items; size_t itemSize; size_t itemOffset; CryptEncodeObjectExFunc encode; }; static BOOL WINAPI CRYPT_DEREncodeItemsAsSet(DWORD dwCertEncodingType, LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded) { const struct DERSetDescriptor *desc = (const struct DERSetDescriptor *)pvStructInfo; CRYPT_SET_OF setOf = { 0, NULL }; BOOL ret = TRUE; DWORD i; if (desc->cItems) { setOf.rgValue = CryptMemAlloc(desc->cItems * sizeof(CRYPT_DER_BLOB)); if (!setOf.rgValue) ret = FALSE; else { setOf.cValue = desc->cItems; memset(setOf.rgValue, 0, setOf.cValue * sizeof(CRYPT_DER_BLOB)); } } for (i = 0; ret && i < setOf.cValue; i++) { ret = desc->encode(dwCertEncodingType, lpszStructType, (const BYTE *)desc->items + i * desc->itemSize + desc->itemOffset, 0, NULL, NULL, &setOf.rgValue[i].cbData); if (ret) { setOf.rgValue[i].pbData = CryptMemAlloc(setOf.rgValue[i].cbData); if (!setOf.rgValue[i].pbData) ret = FALSE; else ret = desc->encode(dwCertEncodingType, lpszStructType, (const BYTE *)desc->items + i * desc->itemSize + desc->itemOffset, 0, NULL, setOf.rgValue[i].pbData, &setOf.rgValue[i].cbData); } /* Some functions propagate their errors through the size */ if (!ret) *pcbEncoded = setOf.rgValue[i].cbData; } if (ret) { DWORD bytesNeeded = 0, lenBytes; BOOL ret; for (i = 0; i < setOf.cValue; i++) bytesNeeded += setOf.rgValue[i].cbData; CRYPT_EncodeLen(bytesNeeded, NULL, &lenBytes); bytesNeeded += 1 + lenBytes; if (!pbEncoded) *pcbEncoded = bytesNeeded; else if ((ret = CRYPT_EncodeEnsureSpace(dwFlags, pEncodePara, pbEncoded, pcbEncoded, bytesNeeded))) { if (dwFlags & CRYPT_ENCODE_ALLOC_FLAG) pbEncoded = *(BYTE **)pbEncoded; qsort(setOf.rgValue, setOf.cValue, sizeof(CRYPT_DER_BLOB), BLOBComp); *pbEncoded++ = ASN_CONSTRUCTOR | ASN_SETOF; CRYPT_EncodeLen(bytesNeeded - lenBytes - 1, pbEncoded, &lenBytes); pbEncoded += lenBytes; for (i = 0; i < setOf.cValue; i++) { memcpy(pbEncoded, setOf.rgValue[i].pbData, setOf.rgValue[i].cbData); pbEncoded += setOf.rgValue[i].cbData; } } } for (i = 0; i < setOf.cValue; i++) CryptMemFree(setOf.rgValue[i].pbData); CryptMemFree(setOf.rgValue); return ret; } static BOOL WINAPI CRYPT_AsnEncodeRdn(DWORD dwCertEncodingType, CERT_RDN *rdn, CryptEncodeObjectExFunc nameValueEncodeFunc, BYTE *pbEncoded, DWORD *pcbEncoded) { BOOL ret; CRYPT_SET_OF setOf = { 0, NULL }; __TRY { DWORD i; ret = TRUE; if (rdn->cRDNAttr) { setOf.cValue = rdn->cRDNAttr; setOf.rgValue = CryptMemAlloc(rdn->cRDNAttr * sizeof(CRYPT_DER_BLOB)); if (!setOf.rgValue) ret = FALSE; else memset(setOf.rgValue, 0, setOf.cValue * sizeof(CRYPT_DER_BLOB)); } for (i = 0; ret && i < rdn->cRDNAttr; i++) { setOf.rgValue[i].cbData = 0; ret = CRYPT_AsnEncodeRdnAttr(dwCertEncodingType, &rdn->rgRDNAttr[i], nameValueEncodeFunc, NULL, &setOf.rgValue[i].cbData); if (ret) { setOf.rgValue[i].pbData = CryptMemAlloc(setOf.rgValue[i].cbData); if (!setOf.rgValue[i].pbData) ret = FALSE; else ret = CRYPT_AsnEncodeRdnAttr(dwCertEncodingType, &rdn->rgRDNAttr[i], nameValueEncodeFunc, setOf.rgValue[i].pbData, &setOf.rgValue[i].cbData); } if (!ret) { /* Have to propagate index of failing character */ *pcbEncoded = setOf.rgValue[i].cbData; } } if (ret) ret = CRYPT_DEREncodeSet(X509_ASN_ENCODING, NULL, &setOf, 0, NULL, pbEncoded, pcbEncoded); for (i = 0; i < setOf.cValue; i++) CryptMemFree(setOf.rgValue[i].pbData); } __EXCEPT_PAGE_FAULT { SetLastError(STATUS_ACCESS_VIOLATION); ret = FALSE; } __ENDTRY CryptMemFree(setOf.rgValue); return ret; } static BOOL WINAPI CRYPT_AsnEncodeUnicodeNameValue(DWORD dwCertEncodingType, LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded); static BOOL WINAPI CRYPT_AsnEncodeOrCopyUnicodeNameValue( DWORD dwCertEncodingType, LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded) { const CERT_NAME_VALUE *value = (const CERT_NAME_VALUE *)pvStructInfo; BOOL ret; if (value->dwValueType == CERT_RDN_ENCODED_BLOB) ret = CRYPT_CopyEncodedBlob(dwCertEncodingType, NULL, &value->Value, dwFlags, pEncodePara, pbEncoded, pcbEncoded); else ret = CRYPT_AsnEncodeUnicodeNameValue(dwCertEncodingType, NULL, value, dwFlags, pEncodePara, pbEncoded, pcbEncoded); return ret; } static BOOL WINAPI CRYPT_AsnEncodeUnicodeName(DWORD dwCertEncodingType, LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded) { BOOL ret = TRUE; __TRY { const CERT_NAME_INFO *info = (const CERT_NAME_INFO *)pvStructInfo; DWORD bytesNeeded = 0, lenBytes, size, i; TRACE("encoding name with %d RDNs\n", info->cRDN); ret = TRUE; for (i = 0; ret && i < info->cRDN; i++) { ret = CRYPT_AsnEncodeRdn(dwCertEncodingType, &info->rgRDN[i], CRYPT_AsnEncodeOrCopyUnicodeNameValue, NULL, &size); if (ret) bytesNeeded += size; else *pcbEncoded = size; } CRYPT_EncodeLen(bytesNeeded, NULL, &lenBytes); bytesNeeded += 1 + lenBytes; if (ret) { if (!pbEncoded) *pcbEncoded = bytesNeeded; else { if ((ret = CRYPT_EncodeEnsureSpace(dwFlags, pEncodePara, pbEncoded, pcbEncoded, bytesNeeded))) { if (dwFlags & CRYPT_ENCODE_ALLOC_FLAG) pbEncoded = *(BYTE **)pbEncoded; *pbEncoded++ = ASN_SEQUENCEOF; CRYPT_EncodeLen(bytesNeeded - lenBytes - 1, pbEncoded, &lenBytes); pbEncoded += lenBytes; for (i = 0; ret && i < info->cRDN; i++) { size = bytesNeeded; ret = CRYPT_AsnEncodeRdn(dwCertEncodingType, &info->rgRDN[i], CRYPT_AsnEncodeOrCopyUnicodeNameValue, pbEncoded, &size); if (ret) { pbEncoded += size; bytesNeeded -= size; } else *pcbEncoded = size; } } } } } __EXCEPT_PAGE_FAULT { SetLastError(STATUS_ACCESS_VIOLATION); ret = FALSE; } __ENDTRY return ret; } static BOOL WINAPI CRYPT_AsnEncodePKCSAttribute(DWORD dwCertEncodingType, LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded) { BOOL ret = FALSE; __TRY { const CRYPT_ATTRIBUTE *attr = (const CRYPT_ATTRIBUTE *)pvStructInfo; if (!attr->pszObjId) SetLastError(E_INVALIDARG); else { struct AsnEncodeSequenceItem items[2] = { { attr->pszObjId, CRYPT_AsnEncodeOid, 0 }, { &attr->cValue, CRYPT_DEREncodeSet, 0 }, }; ret = CRYPT_AsnEncodeSequence(dwCertEncodingType, items, sizeof(items) / sizeof(items[0]), dwFlags, pEncodePara, pbEncoded, pcbEncoded); } } __EXCEPT_PAGE_FAULT { SetLastError(STATUS_ACCESS_VIOLATION); } __ENDTRY return ret; } static BOOL WINAPI CRYPT_AsnEncodePKCSAttributes(DWORD dwCertEncodingType, LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded) { BOOL ret = FALSE; __TRY { const CRYPT_ATTRIBUTES *attributes = (const CRYPT_ATTRIBUTES *)pvStructInfo; struct DERSetDescriptor desc = { attributes->cAttr, attributes->rgAttr, sizeof(CRYPT_ATTRIBUTE), 0, CRYPT_AsnEncodePKCSAttribute }; ret = CRYPT_DEREncodeItemsAsSet(X509_ASN_ENCODING, lpszStructType, &desc, dwFlags, pEncodePara, pbEncoded, pcbEncoded); } __EXCEPT_PAGE_FAULT { SetLastError(STATUS_ACCESS_VIOLATION); } __ENDTRY return ret; } /* Like CRYPT_AsnEncodePKCSContentInfo, but allows the OID to be NULL */ static BOOL WINAPI CRYPT_AsnEncodePKCSContentInfoInternal( DWORD dwCertEncodingType, LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded) { const CRYPT_CONTENT_INFO *info = (const CRYPT_CONTENT_INFO *)pvStructInfo; struct AsnEncodeSequenceItem items[2] = { { info->pszObjId, CRYPT_AsnEncodeOid, 0 }, { NULL, NULL, 0 }, }; struct AsnConstructedItem constructed = { 0 }; DWORD cItem = 1; if (info->Content.cbData) { constructed.tag = 0; constructed.pvStructInfo = &info->Content; constructed.encodeFunc = CRYPT_CopyEncodedBlob; items[cItem].pvStructInfo = &constructed; items[cItem].encodeFunc = CRYPT_AsnEncodeConstructed; cItem++; } return CRYPT_AsnEncodeSequence(dwCertEncodingType, items, cItem, dwFlags, pEncodePara, pbEncoded, pcbEncoded); } BOOL CRYPT_AsnEncodePKCSDigestedData(CRYPT_DIGESTED_DATA *digestedData, void *pvData, DWORD *pcbData) { struct AsnEncodeSequenceItem items[] = { { &digestedData->version, CRYPT_AsnEncodeInt, 0 }, { &digestedData->DigestAlgorithm, CRYPT_AsnEncodeAlgorithmIdWithNullParams, 0 }, { &digestedData->ContentInfo, CRYPT_AsnEncodePKCSContentInfoInternal, 0 }, { &digestedData->hash, CRYPT_AsnEncodeOctets, 0 }, }; return CRYPT_AsnEncodeSequence(X509_ASN_ENCODING, items, sizeof(items) / sizeof(items[0]), 0, NULL, pvData, pcbData); } static BOOL WINAPI CRYPT_AsnEncodePKCSContentInfo(DWORD dwCertEncodingType, LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded) { BOOL ret = FALSE; __TRY { const CRYPT_CONTENT_INFO *info = (const CRYPT_CONTENT_INFO *)pvStructInfo; if (!info->pszObjId) SetLastError(E_INVALIDARG); else ret = CRYPT_AsnEncodePKCSContentInfoInternal(dwCertEncodingType, lpszStructType, pvStructInfo, dwFlags, pEncodePara, pbEncoded, pcbEncoded); } __EXCEPT_PAGE_FAULT { SetLastError(STATUS_ACCESS_VIOLATION); } __ENDTRY return ret; } static BOOL CRYPT_AsnEncodeUnicodeStringCoerce(const CERT_NAME_VALUE *value, BYTE tag, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded) { BOOL ret = TRUE; LPCWSTR str = (LPCWSTR)value->Value.pbData; DWORD bytesNeeded, lenBytes, encodedLen; encodedLen = value->Value.cbData ? value->Value.cbData / sizeof(WCHAR) : lstrlenW(str); CRYPT_EncodeLen(encodedLen, NULL, &lenBytes); bytesNeeded = 1 + lenBytes + encodedLen; if (!pbEncoded) *pcbEncoded = bytesNeeded; else { if ((ret = CRYPT_EncodeEnsureSpace(dwFlags, pEncodePara, pbEncoded, pcbEncoded, bytesNeeded))) { DWORD i; if (dwFlags & CRYPT_ENCODE_ALLOC_FLAG) pbEncoded = *(BYTE **)pbEncoded; *pbEncoded++ = tag; CRYPT_EncodeLen(encodedLen, pbEncoded, &lenBytes); pbEncoded += lenBytes; for (i = 0; i < encodedLen; i++) *pbEncoded++ = (BYTE)str[i]; } } return ret; } static BOOL CRYPT_AsnEncodeNumericString(const CERT_NAME_VALUE *value, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded) { BOOL ret = TRUE; LPCWSTR str = (LPCWSTR)value->Value.pbData; DWORD bytesNeeded, lenBytes, encodedLen; encodedLen = value->Value.cbData ? value->Value.cbData / sizeof(WCHAR) : lstrlenW(str); CRYPT_EncodeLen(encodedLen, NULL, &lenBytes); bytesNeeded = 1 + lenBytes + encodedLen; if (!pbEncoded) *pcbEncoded = bytesNeeded; else { if ((ret = CRYPT_EncodeEnsureSpace(dwFlags, pEncodePara, pbEncoded, pcbEncoded, bytesNeeded))) { DWORD i; if (dwFlags & CRYPT_ENCODE_ALLOC_FLAG) pbEncoded = *(BYTE **)pbEncoded; *pbEncoded++ = ASN_NUMERICSTRING; CRYPT_EncodeLen(encodedLen, pbEncoded, &lenBytes); pbEncoded += lenBytes; for (i = 0; ret && i < encodedLen; i++) { if (isdigitW(str[i])) *pbEncoded++ = (BYTE)str[i]; else { *pcbEncoded = i; SetLastError(CRYPT_E_INVALID_NUMERIC_STRING); ret = FALSE; } } } } return ret; } static inline int isprintableW(WCHAR wc) { return isalnumW(wc) || isspaceW(wc) || wc == '\'' || wc == '(' || wc == ')' || wc == '+' || wc == ',' || wc == '-' || wc == '.' || wc == '/' || wc == ':' || wc == '=' || wc == '?'; } static BOOL CRYPT_AsnEncodePrintableString(const CERT_NAME_VALUE *value, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded) { BOOL ret = TRUE; LPCWSTR str = (LPCWSTR)value->Value.pbData; DWORD bytesNeeded, lenBytes, encodedLen; encodedLen = value->Value.cbData ? value->Value.cbData / sizeof(WCHAR) : lstrlenW(str); CRYPT_EncodeLen(encodedLen, NULL, &lenBytes); bytesNeeded = 1 + lenBytes + encodedLen; if (!pbEncoded) *pcbEncoded = bytesNeeded; else { if ((ret = CRYPT_EncodeEnsureSpace(dwFlags, pEncodePara, pbEncoded, pcbEncoded, bytesNeeded))) { DWORD i; if (dwFlags & CRYPT_ENCODE_ALLOC_FLAG) pbEncoded = *(BYTE **)pbEncoded; *pbEncoded++ = ASN_PRINTABLESTRING; CRYPT_EncodeLen(encodedLen, pbEncoded, &lenBytes); pbEncoded += lenBytes; for (i = 0; ret && i < encodedLen; i++) { if (isprintableW(str[i])) *pbEncoded++ = (BYTE)str[i]; else { *pcbEncoded = i; SetLastError(CRYPT_E_INVALID_PRINTABLE_STRING); ret = FALSE; } } } } return ret; } static BOOL CRYPT_AsnEncodeIA5String(const CERT_NAME_VALUE *value, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded) { BOOL ret = TRUE; LPCWSTR str = (LPCWSTR)value->Value.pbData; DWORD bytesNeeded, lenBytes, encodedLen; encodedLen = value->Value.cbData ? value->Value.cbData / sizeof(WCHAR) : lstrlenW(str); CRYPT_EncodeLen(encodedLen, NULL, &lenBytes); bytesNeeded = 1 + lenBytes + encodedLen; if (!pbEncoded) *pcbEncoded = bytesNeeded; else { if ((ret = CRYPT_EncodeEnsureSpace(dwFlags, pEncodePara, pbEncoded, pcbEncoded, bytesNeeded))) { DWORD i; if (dwFlags & CRYPT_ENCODE_ALLOC_FLAG) pbEncoded = *(BYTE **)pbEncoded; *pbEncoded++ = ASN_IA5STRING; CRYPT_EncodeLen(encodedLen, pbEncoded, &lenBytes); pbEncoded += lenBytes; for (i = 0; ret && i < encodedLen; i++) { if (str[i] <= 0x7f) *pbEncoded++ = (BYTE)str[i]; else { *pcbEncoded = i; SetLastError(CRYPT_E_INVALID_IA5_STRING); ret = FALSE; } } } } return ret; } static BOOL CRYPT_AsnEncodeUniversalString(const CERT_NAME_VALUE *value, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded) { BOOL ret = TRUE; LPCWSTR str = (LPCWSTR)value->Value.pbData; DWORD bytesNeeded, lenBytes, strLen; /* FIXME: doesn't handle composite characters */ strLen = value->Value.cbData ? value->Value.cbData / sizeof(WCHAR) : lstrlenW(str); CRYPT_EncodeLen(strLen * 4, NULL, &lenBytes); bytesNeeded = 1 + lenBytes + strLen * 4; if (!pbEncoded) *pcbEncoded = bytesNeeded; else { if ((ret = CRYPT_EncodeEnsureSpace(dwFlags, pEncodePara, pbEncoded, pcbEncoded, bytesNeeded))) { DWORD i; if (dwFlags & CRYPT_ENCODE_ALLOC_FLAG) pbEncoded = *(BYTE **)pbEncoded; *pbEncoded++ = ASN_UNIVERSALSTRING; CRYPT_EncodeLen(strLen * 4, pbEncoded, &lenBytes); pbEncoded += lenBytes; for (i = 0; i < strLen; i++) { *pbEncoded++ = 0; *pbEncoded++ = 0; *pbEncoded++ = (BYTE)((str[i] & 0xff00) >> 8); *pbEncoded++ = (BYTE)(str[i] & 0x00ff); } } } return ret; } static BOOL WINAPI CRYPT_AsnEncodeUnicodeNameValue(DWORD dwCertEncodingType, LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded) { BOOL ret = FALSE; __TRY { const CERT_NAME_VALUE *value = (const CERT_NAME_VALUE *)pvStructInfo; switch (value->dwValueType) { case CERT_RDN_ANY_TYPE: case CERT_RDN_ENCODED_BLOB: case CERT_RDN_OCTET_STRING: SetLastError(CRYPT_E_NOT_CHAR_STRING); break; case CERT_RDN_NUMERIC_STRING: ret = CRYPT_AsnEncodeNumericString(value, dwFlags, pEncodePara, pbEncoded, pcbEncoded); break; case CERT_RDN_PRINTABLE_STRING: ret = CRYPT_AsnEncodePrintableString(value, dwFlags, pEncodePara, pbEncoded, pcbEncoded); break; case CERT_RDN_TELETEX_STRING: ret = CRYPT_AsnEncodeUnicodeStringCoerce(value, ASN_T61STRING, dwFlags, pEncodePara, pbEncoded, pcbEncoded); break; case CERT_RDN_VIDEOTEX_STRING: ret = CRYPT_AsnEncodeUnicodeStringCoerce(value, ASN_VIDEOTEXSTRING, dwFlags, pEncodePara, pbEncoded, pcbEncoded); break; case CERT_RDN_IA5_STRING: ret = CRYPT_AsnEncodeIA5String(value, dwFlags, pEncodePara, pbEncoded, pcbEncoded); break; case CERT_RDN_GRAPHIC_STRING: ret = CRYPT_AsnEncodeUnicodeStringCoerce(value, ASN_GRAPHICSTRING, dwFlags, pEncodePara, pbEncoded, pcbEncoded); break; case CERT_RDN_VISIBLE_STRING: ret = CRYPT_AsnEncodeUnicodeStringCoerce(value, ASN_VISIBLESTRING, dwFlags, pEncodePara, pbEncoded, pcbEncoded); break; case CERT_RDN_GENERAL_STRING: ret = CRYPT_AsnEncodeUnicodeStringCoerce(value, ASN_GENERALSTRING, dwFlags, pEncodePara, pbEncoded, pcbEncoded); break; case CERT_RDN_UNIVERSAL_STRING: ret = CRYPT_AsnEncodeUniversalString(value, dwFlags, pEncodePara, pbEncoded, pcbEncoded); break; case CERT_RDN_BMP_STRING: ret = CRYPT_AsnEncodeBMPString(value, dwFlags, pEncodePara, pbEncoded, pcbEncoded); break; case CERT_RDN_UTF8_STRING: ret = CRYPT_AsnEncodeUTF8String(value, dwFlags, pEncodePara, pbEncoded, pcbEncoded); break; default: SetLastError(CRYPT_E_ASN1_CHOICE); } } __EXCEPT_PAGE_FAULT { SetLastError(STATUS_ACCESS_VIOLATION); } __ENDTRY return ret; } static BOOL WINAPI CRYPT_AsnEncodeName(DWORD dwCertEncodingType, LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded) { BOOL ret; __TRY { const CERT_NAME_INFO *info = (const CERT_NAME_INFO *)pvStructInfo; DWORD bytesNeeded = 0, lenBytes, size, i; TRACE("encoding name with %d RDNs\n", info->cRDN); ret = TRUE; for (i = 0; ret && i < info->cRDN; i++) { ret = CRYPT_AsnEncodeRdn(dwCertEncodingType, &info->rgRDN[i], CRYPT_AsnEncodeNameValue, NULL, &size); if (ret) bytesNeeded += size; } CRYPT_EncodeLen(bytesNeeded, NULL, &lenBytes); bytesNeeded += 1 + lenBytes; if (ret) { if (!pbEncoded) *pcbEncoded = bytesNeeded; else { if ((ret = CRYPT_EncodeEnsureSpace(dwFlags, pEncodePara, pbEncoded, pcbEncoded, bytesNeeded))) { if (dwFlags & CRYPT_ENCODE_ALLOC_FLAG) pbEncoded = *(BYTE **)pbEncoded; *pbEncoded++ = ASN_SEQUENCEOF; CRYPT_EncodeLen(bytesNeeded - lenBytes - 1, pbEncoded, &lenBytes); pbEncoded += lenBytes; for (i = 0; ret && i < info->cRDN; i++) { size = bytesNeeded; ret = CRYPT_AsnEncodeRdn(dwCertEncodingType, &info->rgRDN[i], CRYPT_AsnEncodeNameValue, pbEncoded, &size); if (ret) { pbEncoded += size; bytesNeeded -= size; } } } } } } __EXCEPT_PAGE_FAULT { SetLastError(STATUS_ACCESS_VIOLATION); ret = FALSE; } __ENDTRY return ret; } static BOOL WINAPI CRYPT_AsnEncodeBool(DWORD dwCertEncodingType, LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded) { BOOL val = *(const BOOL *)pvStructInfo, ret; TRACE("%d\n", val); if (!pbEncoded) { *pcbEncoded = 3; ret = TRUE; } else if (*pcbEncoded < 3) { *pcbEncoded = 3; SetLastError(ERROR_MORE_DATA); ret = FALSE; } else { *pcbEncoded = 3; *pbEncoded++ = ASN_BOOL; *pbEncoded++ = 1; *pbEncoded++ = val ? 0xff : 0; ret = TRUE; } TRACE("returning %d (%08x)\n", ret, GetLastError()); return ret; } static BOOL CRYPT_AsnEncodeAltNameEntry(const CERT_ALT_NAME_ENTRY *entry, BYTE *pbEncoded, DWORD *pcbEncoded) { BOOL ret; DWORD dataLen; BYTE tag; ret = TRUE; switch (entry->dwAltNameChoice) { case CERT_ALT_NAME_RFC822_NAME: case CERT_ALT_NAME_DNS_NAME: case CERT_ALT_NAME_URL: tag = ASN_CONTEXT | (entry->dwAltNameChoice - 1); if (entry->u.pwszURL) { DWORD i; /* Not + 1: don't encode the NULL-terminator */ dataLen = lstrlenW(entry->u.pwszURL); for (i = 0; ret && i < dataLen; i++) { if (entry->u.pwszURL[i] > 0x7f) { SetLastError(CRYPT_E_INVALID_IA5_STRING); ret = FALSE; *pcbEncoded = i; } } } else dataLen = 0; break; case CERT_ALT_NAME_DIRECTORY_NAME: tag = ASN_CONTEXT | ASN_CONSTRUCTOR | (entry->dwAltNameChoice - 1); dataLen = entry->u.DirectoryName.cbData; break; case CERT_ALT_NAME_IP_ADDRESS: tag = ASN_CONTEXT | (entry->dwAltNameChoice - 1); dataLen = entry->u.IPAddress.cbData; break; case CERT_ALT_NAME_REGISTERED_ID: { struct AsnEncodeTagSwappedItem swapped = { ASN_CONTEXT | (entry->dwAltNameChoice - 1), entry->u.pszRegisteredID, CRYPT_AsnEncodeOid }; return CRYPT_AsnEncodeSwapTag(0, NULL, &swapped, 0, NULL, pbEncoded, pcbEncoded); } case CERT_ALT_NAME_OTHER_NAME: FIXME("name type %d unimplemented\n", entry->dwAltNameChoice); return FALSE; default: SetLastError(E_INVALIDARG); return FALSE; } if (ret) { DWORD bytesNeeded, lenBytes; CRYPT_EncodeLen(dataLen, NULL, &lenBytes); bytesNeeded = 1 + dataLen + lenBytes; if (!pbEncoded) *pcbEncoded = bytesNeeded; else if (*pcbEncoded < bytesNeeded) { SetLastError(ERROR_MORE_DATA); *pcbEncoded = bytesNeeded; ret = FALSE; } else { *pbEncoded++ = tag; CRYPT_EncodeLen(dataLen, pbEncoded, &lenBytes); pbEncoded += lenBytes; switch (entry->dwAltNameChoice) { case CERT_ALT_NAME_RFC822_NAME: case CERT_ALT_NAME_DNS_NAME: case CERT_ALT_NAME_URL: { DWORD i; for (i = 0; i < dataLen; i++) *pbEncoded++ = (BYTE)entry->u.pwszURL[i]; break; } case CERT_ALT_NAME_DIRECTORY_NAME: memcpy(pbEncoded, entry->u.DirectoryName.pbData, dataLen); break; case CERT_ALT_NAME_IP_ADDRESS: memcpy(pbEncoded, entry->u.IPAddress.pbData, dataLen); break; } if (ret) *pcbEncoded = bytesNeeded; } } TRACE("returning %d (%08x)\n", ret, GetLastError()); return ret; } static BOOL WINAPI CRYPT_AsnEncodeIntegerSwapBytes(DWORD dwCertEncodingType, LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded) { BOOL ret; __TRY { const CRYPT_DATA_BLOB *blob = (const CRYPT_DATA_BLOB *)pvStructInfo; CRYPT_DATA_BLOB newBlob = { blob->cbData, NULL }; ret = TRUE; if (newBlob.cbData) { newBlob.pbData = CryptMemAlloc(newBlob.cbData); if (newBlob.pbData) { DWORD i; for (i = 0; i < newBlob.cbData; i++) newBlob.pbData[newBlob.cbData - i - 1] = blob->pbData[i]; } else ret = FALSE; } if (ret) ret = CRYPT_AsnEncodeInteger(dwCertEncodingType, lpszStructType, &newBlob, dwFlags, pEncodePara, pbEncoded, pcbEncoded); CryptMemFree(newBlob.pbData); } __EXCEPT_PAGE_FAULT { SetLastError(STATUS_ACCESS_VIOLATION); ret = FALSE; } __ENDTRY return ret; } static BOOL WINAPI CRYPT_AsnEncodeAuthorityKeyId(DWORD dwCertEncodingType, LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded) { BOOL ret; __TRY { const CERT_AUTHORITY_KEY_ID_INFO *info = (const CERT_AUTHORITY_KEY_ID_INFO *)pvStructInfo; struct AsnEncodeSequenceItem items[3] = { { 0 } }; struct AsnEncodeTagSwappedItem swapped[3] = { { 0 } }; struct AsnConstructedItem constructed = { 0 }; DWORD cItem = 0, cSwapped = 0; if (info->KeyId.cbData) { swapped[cSwapped].tag = ASN_CONTEXT | 0; swapped[cSwapped].pvStructInfo = &info->KeyId; swapped[cSwapped].encodeFunc = CRYPT_AsnEncodeIntegerSwapBytes; items[cItem].pvStructInfo = &swapped[cSwapped]; items[cItem].encodeFunc = CRYPT_AsnEncodeSwapTag; cSwapped++; cItem++; } if (info->CertIssuer.cbData) { constructed.tag = 1; constructed.pvStructInfo = &info->CertIssuer; constructed.encodeFunc = CRYPT_CopyEncodedBlob; items[cItem].pvStructInfo = &constructed; items[cItem].encodeFunc = CRYPT_AsnEncodeConstructed; cItem++; } if (info->CertSerialNumber.cbData) { swapped[cSwapped].tag = ASN_CONTEXT | 2; swapped[cSwapped].pvStructInfo = &info->CertSerialNumber; swapped[cSwapped].encodeFunc = CRYPT_AsnEncodeInteger; items[cItem].pvStructInfo = &swapped[cSwapped]; items[cItem].encodeFunc = CRYPT_AsnEncodeSwapTag; cSwapped++; cItem++; } ret = CRYPT_AsnEncodeSequence(X509_ASN_ENCODING, items, cItem, dwFlags, pEncodePara, pbEncoded, pcbEncoded); } __EXCEPT_PAGE_FAULT { SetLastError(STATUS_ACCESS_VIOLATION); ret = FALSE; } __ENDTRY return ret; } static BOOL WINAPI CRYPT_AsnEncodeAltName(DWORD dwCertEncodingType, LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded) { BOOL ret; __TRY { const CERT_ALT_NAME_INFO *info = (const CERT_ALT_NAME_INFO *)pvStructInfo; DWORD bytesNeeded, dataLen, lenBytes, i; ret = TRUE; /* FIXME: should check that cAltEntry is not bigger than 0xff, since we * can't encode an erroneous entry index if it's bigger than this. */ for (i = 0, dataLen = 0; ret && i < info->cAltEntry; i++) { DWORD len; ret = CRYPT_AsnEncodeAltNameEntry(&info->rgAltEntry[i], NULL, &len); if (ret) dataLen += len; else if (GetLastError() == CRYPT_E_INVALID_IA5_STRING) { /* CRYPT_AsnEncodeAltNameEntry encoded the index of * the bad character, now set the index of the bad * entry */ *pcbEncoded = (BYTE)i << CERT_ALT_NAME_ENTRY_ERR_INDEX_SHIFT | len; } } if (ret) { CRYPT_EncodeLen(dataLen, NULL, &lenBytes); bytesNeeded = 1 + lenBytes + dataLen; if (!pbEncoded) { *pcbEncoded = bytesNeeded; ret = TRUE; } else { if ((ret = CRYPT_EncodeEnsureSpace(dwFlags, pEncodePara, pbEncoded, pcbEncoded, bytesNeeded))) { if (dwFlags & CRYPT_ENCODE_ALLOC_FLAG) pbEncoded = *(BYTE **)pbEncoded; *pbEncoded++ = ASN_SEQUENCEOF; CRYPT_EncodeLen(dataLen, pbEncoded, &lenBytes); pbEncoded += lenBytes; for (i = 0; ret && i < info->cAltEntry; i++) { DWORD len = dataLen; ret = CRYPT_AsnEncodeAltNameEntry(&info->rgAltEntry[i], pbEncoded, &len); if (ret) { pbEncoded += len; dataLen -= len; } } } } } } __EXCEPT_PAGE_FAULT { SetLastError(STATUS_ACCESS_VIOLATION); ret = FALSE; } __ENDTRY return ret; } static BOOL WINAPI CRYPT_AsnEncodeAuthorityKeyId2(DWORD dwCertEncodingType, LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded) { BOOL ret; __TRY { const CERT_AUTHORITY_KEY_ID2_INFO *info = (const CERT_AUTHORITY_KEY_ID2_INFO *)pvStructInfo; struct AsnEncodeSequenceItem items[3] = { { 0 } }; struct AsnEncodeTagSwappedItem swapped[3] = { { 0 } }; DWORD cItem = 0, cSwapped = 0; if (info->KeyId.cbData) { swapped[cSwapped].tag = ASN_CONTEXT | 0; swapped[cSwapped].pvStructInfo = &info->KeyId; swapped[cSwapped].encodeFunc = CRYPT_AsnEncodeIntegerSwapBytes; items[cItem].pvStructInfo = &swapped[cSwapped]; items[cItem].encodeFunc = CRYPT_AsnEncodeSwapTag; cSwapped++; cItem++; } if (info->AuthorityCertIssuer.cAltEntry) { swapped[cSwapped].tag = ASN_CONTEXT | ASN_CONSTRUCTOR | 1; swapped[cSwapped].pvStructInfo = &info->AuthorityCertIssuer; swapped[cSwapped].encodeFunc = CRYPT_AsnEncodeAltName; items[cItem].pvStructInfo = &swapped[cSwapped]; items[cItem].encodeFunc = CRYPT_AsnEncodeSwapTag; cSwapped++; cItem++; } if (info->AuthorityCertSerialNumber.cbData) { swapped[cSwapped].tag = ASN_CONTEXT | 2; swapped[cSwapped].pvStructInfo = &info->AuthorityCertSerialNumber; swapped[cSwapped].encodeFunc = CRYPT_AsnEncodeInteger; items[cItem].pvStructInfo = &swapped[cSwapped]; items[cItem].encodeFunc = CRYPT_AsnEncodeSwapTag; cSwapped++; cItem++; } ret = CRYPT_AsnEncodeSequence(X509_ASN_ENCODING, items, cItem, dwFlags, pEncodePara, pbEncoded, pcbEncoded); } __EXCEPT_PAGE_FAULT { SetLastError(STATUS_ACCESS_VIOLATION); ret = FALSE; } __ENDTRY return ret; } static BOOL WINAPI CRYPT_AsnEncodeBasicConstraints(DWORD dwCertEncodingType, LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded) { BOOL ret; __TRY { const CERT_BASIC_CONSTRAINTS_INFO *info = (const CERT_BASIC_CONSTRAINTS_INFO *)pvStructInfo; struct AsnEncodeSequenceItem items[3] = { { &info->SubjectType, CRYPT_AsnEncodeBits, 0 }, { 0 } }; DWORD cItem = 1; if (info->fPathLenConstraint) { items[cItem].pvStructInfo = &info->dwPathLenConstraint; items[cItem].encodeFunc = CRYPT_AsnEncodeInt; cItem++; } if (info->cSubtreesConstraint) { items[cItem].pvStructInfo = &info->cSubtreesConstraint; items[cItem].encodeFunc = CRYPT_AsnEncodeSequenceOfAny; cItem++; } ret = CRYPT_AsnEncodeSequence(dwCertEncodingType, items, cItem, dwFlags, pEncodePara, pbEncoded, pcbEncoded); } __EXCEPT_PAGE_FAULT { SetLastError(STATUS_ACCESS_VIOLATION); ret = FALSE; } __ENDTRY return ret; } static BOOL WINAPI CRYPT_AsnEncodeBasicConstraints2(DWORD dwCertEncodingType, LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded) { BOOL ret; __TRY { const CERT_BASIC_CONSTRAINTS2_INFO *info = (const CERT_BASIC_CONSTRAINTS2_INFO *)pvStructInfo; struct AsnEncodeSequenceItem items[2] = { { 0 } }; DWORD cItem = 0; if (info->fCA) { items[cItem].pvStructInfo = &info->fCA; items[cItem].encodeFunc = CRYPT_AsnEncodeBool; cItem++; } if (info->fPathLenConstraint) { items[cItem].pvStructInfo = &info->dwPathLenConstraint; items[cItem].encodeFunc = CRYPT_AsnEncodeInt; cItem++; } ret = CRYPT_AsnEncodeSequence(dwCertEncodingType, items, cItem, dwFlags, pEncodePara, pbEncoded, pcbEncoded); } __EXCEPT_PAGE_FAULT { SetLastError(STATUS_ACCESS_VIOLATION); ret = FALSE; } __ENDTRY return ret; } static BOOL WINAPI CRYPT_AsnEncodeRsaPubKey(DWORD dwCertEncodingType, LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded) { BOOL ret; __TRY { const BLOBHEADER *hdr = (const BLOBHEADER *)pvStructInfo; if (hdr->bType != PUBLICKEYBLOB) { SetLastError(E_INVALIDARG); ret = FALSE; } else { const RSAPUBKEY *rsaPubKey = (const RSAPUBKEY *) ((const BYTE *)pvStructInfo + sizeof(BLOBHEADER)); CRYPT_INTEGER_BLOB blob = { rsaPubKey->bitlen / 8, (BYTE *)pvStructInfo + sizeof(BLOBHEADER) + sizeof(RSAPUBKEY) }; struct AsnEncodeSequenceItem items[] = { { &blob, CRYPT_AsnEncodeUnsignedInteger, 0 }, { &rsaPubKey->pubexp, CRYPT_AsnEncodeInt, 0 }, }; ret = CRYPT_AsnEncodeSequence(dwCertEncodingType, items, sizeof(items) / sizeof(items[0]), dwFlags, pEncodePara, pbEncoded, pcbEncoded); } } __EXCEPT_PAGE_FAULT { SetLastError(STATUS_ACCESS_VIOLATION); ret = FALSE; } __ENDTRY return ret; } BOOL WINAPI CRYPT_AsnEncodeOctets(DWORD dwCertEncodingType, LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded) { BOOL ret; __TRY { const CRYPT_DATA_BLOB *blob = (const CRYPT_DATA_BLOB *)pvStructInfo; DWORD bytesNeeded, lenBytes; TRACE("(%d, %p), %08x, %p, %p, %d\n", blob->cbData, blob->pbData, dwFlags, pEncodePara, pbEncoded, *pcbEncoded); CRYPT_EncodeLen(blob->cbData, NULL, &lenBytes); bytesNeeded = 1 + lenBytes + blob->cbData; if (!pbEncoded) { *pcbEncoded = bytesNeeded; ret = TRUE; } else { if ((ret = CRYPT_EncodeEnsureSpace(dwFlags, pEncodePara, pbEncoded, pcbEncoded, bytesNeeded))) { if (dwFlags & CRYPT_ENCODE_ALLOC_FLAG) pbEncoded = *(BYTE **)pbEncoded; *pbEncoded++ = ASN_OCTETSTRING; CRYPT_EncodeLen(blob->cbData, pbEncoded, &lenBytes); pbEncoded += lenBytes; if (blob->cbData) memcpy(pbEncoded, blob->pbData, blob->cbData); } } } __EXCEPT_PAGE_FAULT { SetLastError(STATUS_ACCESS_VIOLATION); ret = FALSE; } __ENDTRY TRACE("returning %d (%08x)\n", ret, GetLastError()); return ret; } static BOOL WINAPI CRYPT_AsnEncodeBits(DWORD dwCertEncodingType, LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded) { BOOL ret; __TRY { const CRYPT_BIT_BLOB *blob = (const CRYPT_BIT_BLOB *)pvStructInfo; DWORD bytesNeeded, lenBytes, dataBytes; BYTE unusedBits; /* yep, MS allows cUnusedBits to be >= 8 */ if (!blob->cUnusedBits) { dataBytes = blob->cbData; unusedBits = 0; } else if (blob->cbData * 8 > blob->cUnusedBits) { dataBytes = (blob->cbData * 8 - blob->cUnusedBits) / 8 + 1; unusedBits = blob->cUnusedBits >= 8 ? blob->cUnusedBits / 8 : blob->cUnusedBits; } else { dataBytes = 0; unusedBits = 0; } CRYPT_EncodeLen(dataBytes + 1, NULL, &lenBytes); bytesNeeded = 1 + lenBytes + dataBytes + 1; if (!pbEncoded) { *pcbEncoded = bytesNeeded; ret = TRUE; } else { if ((ret = CRYPT_EncodeEnsureSpace(dwFlags, pEncodePara, pbEncoded, pcbEncoded, bytesNeeded))) { if (dwFlags & CRYPT_ENCODE_ALLOC_FLAG) pbEncoded = *(BYTE **)pbEncoded; *pbEncoded++ = ASN_BITSTRING; CRYPT_EncodeLen(dataBytes + 1, pbEncoded, &lenBytes); pbEncoded += lenBytes; *pbEncoded++ = unusedBits; if (dataBytes) { BYTE mask = 0xff << unusedBits; if (dataBytes > 1) { memcpy(pbEncoded, blob->pbData, dataBytes - 1); pbEncoded += dataBytes - 1; } *pbEncoded = *(blob->pbData + dataBytes - 1) & mask; } } } } __EXCEPT_PAGE_FAULT { SetLastError(STATUS_ACCESS_VIOLATION); ret = FALSE; } __ENDTRY return ret; } static BOOL WINAPI CRYPT_AsnEncodeBitsSwapBytes(DWORD dwCertEncodingType, LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded) { BOOL ret; __TRY { const CRYPT_BIT_BLOB *blob = (const CRYPT_BIT_BLOB *)pvStructInfo; CRYPT_BIT_BLOB newBlob = { blob->cbData, NULL, blob->cUnusedBits }; ret = TRUE; if (newBlob.cbData) { newBlob.pbData = CryptMemAlloc(newBlob.cbData); if (newBlob.pbData) { DWORD i; for (i = 0; i < newBlob.cbData; i++) newBlob.pbData[newBlob.cbData - i - 1] = blob->pbData[i]; } else ret = FALSE; } if (ret) ret = CRYPT_AsnEncodeBits(dwCertEncodingType, lpszStructType, &newBlob, dwFlags, pEncodePara, pbEncoded, pcbEncoded); CryptMemFree(newBlob.pbData); } __EXCEPT_PAGE_FAULT { SetLastError(STATUS_ACCESS_VIOLATION); ret = FALSE; } __ENDTRY return ret; } BOOL WINAPI CRYPT_AsnEncodeInt(DWORD dwCertEncodingType, LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded) { CRYPT_INTEGER_BLOB blob = { sizeof(INT), (BYTE *)pvStructInfo }; return CRYPT_AsnEncodeInteger(dwCertEncodingType, X509_MULTI_BYTE_INTEGER, &blob, dwFlags, pEncodePara, pbEncoded, pcbEncoded); } static BOOL WINAPI CRYPT_AsnEncodeInteger(DWORD dwCertEncodingType, LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded) { BOOL ret; __TRY { DWORD significantBytes, lenBytes; BYTE padByte = 0, bytesNeeded; BOOL pad = FALSE; const CRYPT_INTEGER_BLOB *blob = (const CRYPT_INTEGER_BLOB *)pvStructInfo; significantBytes = blob->cbData; if (significantBytes) { if (blob->pbData[significantBytes - 1] & 0x80) { /* negative, lop off leading (little-endian) 0xffs */ for (; significantBytes > 0 && blob->pbData[significantBytes - 1] == 0xff; significantBytes--) ; if (blob->pbData[significantBytes - 1] < 0x80) { padByte = 0xff; pad = TRUE; } } else { /* positive, lop off leading (little-endian) zeroes */ for (; significantBytes > 0 && !blob->pbData[significantBytes - 1]; significantBytes--) ; if (significantBytes == 0) significantBytes = 1; if (blob->pbData[significantBytes - 1] > 0x7f) { padByte = 0; pad = TRUE; } } } if (pad) CRYPT_EncodeLen(significantBytes + 1, NULL, &lenBytes); else CRYPT_EncodeLen(significantBytes, NULL, &lenBytes); bytesNeeded = 1 + lenBytes + significantBytes; if (pad) bytesNeeded++; if (!pbEncoded) { *pcbEncoded = bytesNeeded; ret = TRUE; } else { if ((ret = CRYPT_EncodeEnsureSpace(dwFlags, pEncodePara, pbEncoded, pcbEncoded, bytesNeeded))) { if (dwFlags & CRYPT_ENCODE_ALLOC_FLAG) pbEncoded = *(BYTE **)pbEncoded; *pbEncoded++ = ASN_INTEGER; if (pad) { CRYPT_EncodeLen(significantBytes + 1, pbEncoded, &lenBytes); pbEncoded += lenBytes; *pbEncoded++ = padByte; } else { CRYPT_EncodeLen(significantBytes, pbEncoded, &lenBytes); pbEncoded += lenBytes; } for (; significantBytes > 0; significantBytes--) *(pbEncoded++) = blob->pbData[significantBytes - 1]; } } } __EXCEPT_PAGE_FAULT { SetLastError(STATUS_ACCESS_VIOLATION); ret = FALSE; } __ENDTRY return ret; } static BOOL WINAPI CRYPT_AsnEncodeUnsignedInteger(DWORD dwCertEncodingType, LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded) { BOOL ret; __TRY { DWORD significantBytes, lenBytes; BYTE bytesNeeded; BOOL pad = FALSE; const CRYPT_INTEGER_BLOB *blob = (const CRYPT_INTEGER_BLOB *)pvStructInfo; significantBytes = blob->cbData; if (significantBytes) { /* positive, lop off leading (little-endian) zeroes */ for (; significantBytes > 0 && !blob->pbData[significantBytes - 1]; significantBytes--) ; if (significantBytes == 0) significantBytes = 1; if (blob->pbData[significantBytes - 1] > 0x7f) pad = TRUE; } if (pad) CRYPT_EncodeLen(significantBytes + 1, NULL, &lenBytes); else CRYPT_EncodeLen(significantBytes, NULL, &lenBytes); bytesNeeded = 1 + lenBytes + significantBytes; if (pad) bytesNeeded++; if (!pbEncoded) { *pcbEncoded = bytesNeeded; ret = TRUE; } else { if ((ret = CRYPT_EncodeEnsureSpace(dwFlags, pEncodePara, pbEncoded, pcbEncoded, bytesNeeded))) { if (dwFlags & CRYPT_ENCODE_ALLOC_FLAG) pbEncoded = *(BYTE **)pbEncoded; *pbEncoded++ = ASN_INTEGER; if (pad) { CRYPT_EncodeLen(significantBytes + 1, pbEncoded, &lenBytes); pbEncoded += lenBytes; *pbEncoded++ = 0; } else { CRYPT_EncodeLen(significantBytes, pbEncoded, &lenBytes); pbEncoded += lenBytes; } for (; significantBytes > 0; significantBytes--) *(pbEncoded++) = blob->pbData[significantBytes - 1]; } } } __EXCEPT_PAGE_FAULT { SetLastError(STATUS_ACCESS_VIOLATION); ret = FALSE; } __ENDTRY return ret; } static BOOL WINAPI CRYPT_AsnEncodeEnumerated(DWORD dwCertEncodingType, LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded) { CRYPT_INTEGER_BLOB blob; BOOL ret; /* Encode as an unsigned integer, then change the tag to enumerated */ blob.cbData = sizeof(DWORD); blob.pbData = (BYTE *)pvStructInfo; ret = CRYPT_AsnEncodeUnsignedInteger(dwCertEncodingType, X509_MULTI_BYTE_UINT, &blob, dwFlags, pEncodePara, pbEncoded, pcbEncoded); if (ret && pbEncoded) { if (dwFlags & CRYPT_ENCODE_ALLOC_FLAG) pbEncoded = *(BYTE **)pbEncoded; pbEncoded[0] = ASN_ENUMERATED; } return ret; } static BOOL WINAPI CRYPT_AsnEncodeUtcTime(DWORD dwCertEncodingType, LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded) { BOOL ret; __TRY { SYSTEMTIME sysTime; /* sorry, magic number: enough for tag, len, YYMMDDHHMMSSZ\0. I use a * temporary buffer because the output buffer is not NULL-terminated. */ char buf[16]; static const DWORD bytesNeeded = sizeof(buf) - 1; if (!pbEncoded) { *pcbEncoded = bytesNeeded; ret = TRUE; } else { /* Sanity check the year, this is a two-digit year format */ ret = FileTimeToSystemTime((const FILETIME *)pvStructInfo, &sysTime); if (ret && (sysTime.wYear < 1950 || sysTime.wYear > 2050)) { SetLastError(CRYPT_E_BAD_ENCODE); ret = FALSE; } if (ret) { if ((ret = CRYPT_EncodeEnsureSpace(dwFlags, pEncodePara, pbEncoded, pcbEncoded, bytesNeeded))) { if (dwFlags & CRYPT_ENCODE_ALLOC_FLAG) pbEncoded = *(BYTE **)pbEncoded; buf[0] = ASN_UTCTIME; buf[1] = bytesNeeded - 2; snprintf(buf + 2, sizeof(buf) - 2, "%02d%02d%02d%02d%02d%02dZ", sysTime.wYear >= 2000 ? sysTime.wYear - 2000 : sysTime.wYear - 1900, sysTime.wMonth, sysTime.wDay, sysTime.wHour, sysTime.wMinute, sysTime.wSecond); memcpy(pbEncoded, buf, bytesNeeded); } } } } __EXCEPT_PAGE_FAULT { SetLastError(STATUS_ACCESS_VIOLATION); ret = FALSE; } __ENDTRY return ret; } static BOOL WINAPI CRYPT_AsnEncodeGeneralizedTime(DWORD dwCertEncodingType, LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded) { BOOL ret; __TRY { SYSTEMTIME sysTime; /* sorry, magic number: enough for tag, len, YYYYMMDDHHMMSSZ\0. I use a * temporary buffer because the output buffer is not NULL-terminated. */ char buf[18]; static const DWORD bytesNeeded = sizeof(buf) - 1; if (!pbEncoded) { *pcbEncoded = bytesNeeded; ret = TRUE; } else { ret = FileTimeToSystemTime((const FILETIME *)pvStructInfo, &sysTime); if (ret) ret = CRYPT_EncodeEnsureSpace(dwFlags, pEncodePara, pbEncoded, pcbEncoded, bytesNeeded); if (ret) { if (dwFlags & CRYPT_ENCODE_ALLOC_FLAG) pbEncoded = *(BYTE **)pbEncoded; buf[0] = ASN_GENERALTIME; buf[1] = bytesNeeded - 2; snprintf(buf + 2, sizeof(buf) - 2, "%04d%02d%02d%02d%02d%02dZ", sysTime.wYear, sysTime.wMonth, sysTime.wDay, sysTime.wHour, sysTime.wMinute, sysTime.wSecond); memcpy(pbEncoded, buf, bytesNeeded); } } } __EXCEPT_PAGE_FAULT { SetLastError(STATUS_ACCESS_VIOLATION); ret = FALSE; } __ENDTRY return ret; } static BOOL WINAPI CRYPT_AsnEncodeChoiceOfTime(DWORD dwCertEncodingType, LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded) { BOOL ret; __TRY { SYSTEMTIME sysTime; /* Check the year, if it's in the UTCTime range call that encode func */ if (!FileTimeToSystemTime((const FILETIME *)pvStructInfo, &sysTime)) return FALSE; if (sysTime.wYear >= 1950 && sysTime.wYear <= 2050) ret = CRYPT_AsnEncodeUtcTime(dwCertEncodingType, lpszStructType, pvStructInfo, dwFlags, pEncodePara, pbEncoded, pcbEncoded); else ret = CRYPT_AsnEncodeGeneralizedTime(dwCertEncodingType, lpszStructType, pvStructInfo, dwFlags, pEncodePara, pbEncoded, pcbEncoded); } __EXCEPT_PAGE_FAULT { SetLastError(STATUS_ACCESS_VIOLATION); ret = FALSE; } __ENDTRY return ret; } static BOOL WINAPI CRYPT_AsnEncodeSequenceOfAny(DWORD dwCertEncodingType, LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded) { BOOL ret; __TRY { DWORD bytesNeeded, dataLen, lenBytes, i; const CRYPT_SEQUENCE_OF_ANY *seq = (const CRYPT_SEQUENCE_OF_ANY *)pvStructInfo; for (i = 0, dataLen = 0; i < seq->cValue; i++) dataLen += seq->rgValue[i].cbData; CRYPT_EncodeLen(dataLen, NULL, &lenBytes); bytesNeeded = 1 + lenBytes + dataLen; if (!pbEncoded) { *pcbEncoded = bytesNeeded; ret = TRUE; } else { if ((ret = CRYPT_EncodeEnsureSpace(dwFlags, pEncodePara, pbEncoded, pcbEncoded, bytesNeeded))) { if (dwFlags & CRYPT_ENCODE_ALLOC_FLAG) pbEncoded = *(BYTE **)pbEncoded; *pbEncoded++ = ASN_SEQUENCEOF; CRYPT_EncodeLen(dataLen, pbEncoded, &lenBytes); pbEncoded += lenBytes; for (i = 0; i < seq->cValue; i++) { memcpy(pbEncoded, seq->rgValue[i].pbData, seq->rgValue[i].cbData); pbEncoded += seq->rgValue[i].cbData; } } } } __EXCEPT_PAGE_FAULT { SetLastError(STATUS_ACCESS_VIOLATION); ret = FALSE; } __ENDTRY return ret; } static BOOL CRYPT_AsnEncodeDistPoint(const CRL_DIST_POINT *distPoint, BYTE *pbEncoded, DWORD *pcbEncoded) { BOOL ret = TRUE; struct AsnEncodeSequenceItem items[3] = { { 0 } }; struct AsnConstructedItem constructed = { 0 }; struct AsnEncodeTagSwappedItem swapped[3] = { { 0 } }; DWORD cItem = 0, cSwapped = 0; switch (distPoint->DistPointName.dwDistPointNameChoice) { case CRL_DIST_POINT_NO_NAME: /* do nothing */ break; case CRL_DIST_POINT_FULL_NAME: swapped[cSwapped].tag = ASN_CONTEXT | ASN_CONSTRUCTOR | 0; swapped[cSwapped].pvStructInfo = &distPoint->DistPointName.u.FullName; swapped[cSwapped].encodeFunc = CRYPT_AsnEncodeAltName; constructed.tag = 0; constructed.pvStructInfo = &swapped[cSwapped]; constructed.encodeFunc = CRYPT_AsnEncodeSwapTag; items[cItem].pvStructInfo = &constructed; items[cItem].encodeFunc = CRYPT_AsnEncodeConstructed; cSwapped++; cItem++; break; case CRL_DIST_POINT_ISSUER_RDN_NAME: FIXME("unimplemented for CRL_DIST_POINT_ISSUER_RDN_NAME\n"); ret = FALSE; break; default: ret = FALSE; } if (ret && distPoint->ReasonFlags.cbData) { swapped[cSwapped].tag = ASN_CONTEXT | 1; swapped[cSwapped].pvStructInfo = &distPoint->ReasonFlags; swapped[cSwapped].encodeFunc = CRYPT_AsnEncodeBits; items[cItem].pvStructInfo = &swapped[cSwapped]; items[cItem].encodeFunc = CRYPT_AsnEncodeSwapTag; cSwapped++; cItem++; } if (ret && distPoint->CRLIssuer.cAltEntry) { swapped[cSwapped].tag = ASN_CONTEXT | ASN_CONSTRUCTOR | 2; swapped[cSwapped].pvStructInfo = &distPoint->CRLIssuer; swapped[cSwapped].encodeFunc = CRYPT_AsnEncodeAltName; items[cItem].pvStructInfo = &swapped[cSwapped]; items[cItem].encodeFunc = CRYPT_AsnEncodeSwapTag; cSwapped++; cItem++; } if (ret) ret = CRYPT_AsnEncodeSequence(X509_ASN_ENCODING, items, cItem, 0, NULL, pbEncoded, pcbEncoded); return ret; } static BOOL WINAPI CRYPT_AsnEncodeCRLDistPoints(DWORD dwCertEncodingType, LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded) { BOOL ret; __TRY { const CRL_DIST_POINTS_INFO *info = (const CRL_DIST_POINTS_INFO *)pvStructInfo; if (!info->cDistPoint) { SetLastError(E_INVALIDARG); ret = FALSE; } else { DWORD bytesNeeded, dataLen, lenBytes, i; ret = TRUE; for (i = 0, dataLen = 0; ret && i < info->cDistPoint; i++) { DWORD len; ret = CRYPT_AsnEncodeDistPoint(&info->rgDistPoint[i], NULL, &len); if (ret) dataLen += len; else if (GetLastError() == CRYPT_E_INVALID_IA5_STRING) { /* Have to propagate index of failing character */ *pcbEncoded = len; } } if (ret) { CRYPT_EncodeLen(dataLen, NULL, &lenBytes); bytesNeeded = 1 + lenBytes + dataLen; if (!pbEncoded) { *pcbEncoded = bytesNeeded; ret = TRUE; } else { if ((ret = CRYPT_EncodeEnsureSpace(dwFlags, pEncodePara, pbEncoded, pcbEncoded, bytesNeeded))) { if (dwFlags & CRYPT_ENCODE_ALLOC_FLAG) pbEncoded = *(BYTE **)pbEncoded; *pbEncoded++ = ASN_SEQUENCEOF; CRYPT_EncodeLen(dataLen, pbEncoded, &lenBytes); pbEncoded += lenBytes; for (i = 0; ret && i < info->cDistPoint; i++) { DWORD len = dataLen; ret = CRYPT_AsnEncodeDistPoint( &info->rgDistPoint[i], pbEncoded, &len); if (ret) { pbEncoded += len; dataLen -= len; } } } } } } } __EXCEPT_PAGE_FAULT { SetLastError(STATUS_ACCESS_VIOLATION); ret = FALSE; } __ENDTRY return ret; } static BOOL WINAPI CRYPT_AsnEncodeEnhancedKeyUsage(DWORD dwCertEncodingType, LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded) { BOOL ret; __TRY { const CERT_ENHKEY_USAGE *usage = (const CERT_ENHKEY_USAGE *)pvStructInfo; DWORD bytesNeeded = 0, lenBytes, size, i; ret = TRUE; for (i = 0; ret && i < usage->cUsageIdentifier; i++) { ret = CRYPT_AsnEncodeOid(dwCertEncodingType, NULL, usage->rgpszUsageIdentifier[i], dwFlags & ~CRYPT_ENCODE_ALLOC_FLAG, NULL, NULL, &size); if (ret) bytesNeeded += size; } CRYPT_EncodeLen(bytesNeeded, NULL, &lenBytes); bytesNeeded += 1 + lenBytes; if (ret) { if (!pbEncoded) *pcbEncoded = bytesNeeded; else { if ((ret = CRYPT_EncodeEnsureSpace(dwFlags, pEncodePara, pbEncoded, pcbEncoded, bytesNeeded))) { if (dwFlags & CRYPT_ENCODE_ALLOC_FLAG) pbEncoded = *(BYTE **)pbEncoded; *pbEncoded++ = ASN_SEQUENCEOF; CRYPT_EncodeLen(bytesNeeded - lenBytes - 1, pbEncoded, &lenBytes); pbEncoded += lenBytes; for (i = 0; ret && i < usage->cUsageIdentifier; i++) { size = bytesNeeded; ret = CRYPT_AsnEncodeOid(dwCertEncodingType, NULL, usage->rgpszUsageIdentifier[i], dwFlags & ~CRYPT_ENCODE_ALLOC_FLAG, NULL, pbEncoded, &size); if (ret) { pbEncoded += size; bytesNeeded -= size; } } } } } } __EXCEPT_PAGE_FAULT { SetLastError(STATUS_ACCESS_VIOLATION); ret = FALSE; } __ENDTRY return ret; } static BOOL WINAPI CRYPT_AsnEncodeIssuingDistPoint(DWORD dwCertEncodingType, LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded) { BOOL ret; __TRY { const CRL_ISSUING_DIST_POINT *point = (const CRL_ISSUING_DIST_POINT *)pvStructInfo; struct AsnEncodeSequenceItem items[6] = { { 0 } }; struct AsnConstructedItem constructed = { 0 }; struct AsnEncodeTagSwappedItem swapped[5] = { { 0 } }; DWORD cItem = 0, cSwapped = 0; ret = TRUE; switch (point->DistPointName.dwDistPointNameChoice) { case CRL_DIST_POINT_NO_NAME: /* do nothing */ break; case CRL_DIST_POINT_FULL_NAME: swapped[cSwapped].tag = ASN_CONTEXT | ASN_CONSTRUCTOR | 0; swapped[cSwapped].pvStructInfo = &point->DistPointName.u.FullName; swapped[cSwapped].encodeFunc = CRYPT_AsnEncodeAltName; constructed.tag = 0; constructed.pvStructInfo = &swapped[cSwapped]; constructed.encodeFunc = CRYPT_AsnEncodeSwapTag; items[cItem].pvStructInfo = &constructed; items[cItem].encodeFunc = CRYPT_AsnEncodeConstructed; cSwapped++; cItem++; break; default: SetLastError(E_INVALIDARG); ret = FALSE; } if (ret && point->fOnlyContainsUserCerts) { swapped[cSwapped].tag = ASN_CONTEXT | 1; swapped[cSwapped].pvStructInfo = &point->fOnlyContainsUserCerts; swapped[cSwapped].encodeFunc = CRYPT_AsnEncodeBool; items[cItem].pvStructInfo = &swapped[cSwapped]; items[cItem].encodeFunc = CRYPT_AsnEncodeSwapTag; cSwapped++; cItem++; } if (ret && point->fOnlyContainsCACerts) { swapped[cSwapped].tag = ASN_CONTEXT | 2; swapped[cSwapped].pvStructInfo = &point->fOnlyContainsCACerts; swapped[cSwapped].encodeFunc = CRYPT_AsnEncodeBool; items[cItem].pvStructInfo = &swapped[cSwapped]; items[cItem].encodeFunc = CRYPT_AsnEncodeSwapTag; cSwapped++; cItem++; } if (ret && point->OnlySomeReasonFlags.cbData) { swapped[cSwapped].tag = ASN_CONTEXT | 3; swapped[cSwapped].pvStructInfo = &point->OnlySomeReasonFlags; swapped[cSwapped].encodeFunc = CRYPT_AsnEncodeBits; items[cItem].pvStructInfo = &swapped[cSwapped]; items[cItem].encodeFunc = CRYPT_AsnEncodeSwapTag; cSwapped++; cItem++; } if (ret && point->fIndirectCRL) { swapped[cSwapped].tag = ASN_CONTEXT | 4; swapped[cSwapped].pvStructInfo = &point->fIndirectCRL; swapped[cSwapped].encodeFunc = CRYPT_AsnEncodeBool; items[cItem].pvStructInfo = &swapped[cSwapped]; items[cItem].encodeFunc = CRYPT_AsnEncodeSwapTag; cSwapped++; cItem++; } if (ret) ret = CRYPT_AsnEncodeSequence(dwCertEncodingType, items, cItem, dwFlags, pEncodePara, pbEncoded, pcbEncoded); } __EXCEPT_PAGE_FAULT { SetLastError(STATUS_ACCESS_VIOLATION); ret = FALSE; } __ENDTRY return ret; } static BOOL WINAPI CRYPT_AsnEncodeIssuerSerialNumber( DWORD dwCertEncodingType, LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded) { BOOL ret; const CERT_ISSUER_SERIAL_NUMBER *issuerSerial = (const CERT_ISSUER_SERIAL_NUMBER *)pvStructInfo; struct AsnEncodeSequenceItem items[] = { { &issuerSerial->Issuer, CRYPT_CopyEncodedBlob, 0 }, { &issuerSerial->SerialNumber, CRYPT_AsnEncodeInteger, 0 }, }; ret = CRYPT_AsnEncodeSequence(dwCertEncodingType, items, sizeof(items) / sizeof(items[0]), dwFlags, pEncodePara, pbEncoded, pcbEncoded); return ret; } static BOOL WINAPI CRYPT_AsnEncodePKCSSignerInfo(DWORD dwCertEncodingType, LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded) { BOOL ret = FALSE; if (!(dwCertEncodingType & PKCS_7_ASN_ENCODING)) { SetLastError(E_INVALIDARG); return FALSE; } __TRY { const CMSG_SIGNER_INFO *info = (const CMSG_SIGNER_INFO *)pvStructInfo; if (!info->Issuer.cbData) SetLastError(E_INVALIDARG); else { struct AsnEncodeSequenceItem items[7] = { { &info->dwVersion, CRYPT_AsnEncodeInt, 0 }, { &info->Issuer, CRYPT_AsnEncodeIssuerSerialNumber, 0 }, { &info->HashAlgorithm, CRYPT_AsnEncodeAlgorithmIdWithNullParams, 0 }, }; struct AsnEncodeTagSwappedItem swapped[2] = { { 0 } }; DWORD cItem = 3, cSwapped = 0; if (info->AuthAttrs.cAttr) { swapped[cSwapped].tag = ASN_CONTEXT | ASN_CONSTRUCTOR | 0; swapped[cSwapped].pvStructInfo = &info->AuthAttrs; swapped[cSwapped].encodeFunc = CRYPT_AsnEncodePKCSAttributes; items[cItem].pvStructInfo = &swapped[cSwapped]; items[cItem].encodeFunc = CRYPT_AsnEncodeSwapTag; cSwapped++; cItem++; } items[cItem].pvStructInfo = &info->HashEncryptionAlgorithm; items[cItem].encodeFunc = CRYPT_AsnEncodeAlgorithmIdWithNullParams; cItem++; items[cItem].pvStructInfo = &info->EncryptedHash; items[cItem].encodeFunc = CRYPT_AsnEncodeOctets; cItem++; if (info->UnauthAttrs.cAttr) { swapped[cSwapped].tag = ASN_CONTEXT | ASN_CONSTRUCTOR | 1; swapped[cSwapped].pvStructInfo = &info->UnauthAttrs; swapped[cSwapped].encodeFunc = CRYPT_AsnEncodePKCSAttributes; items[cItem].pvStructInfo = &swapped[cSwapped]; items[cItem].encodeFunc = CRYPT_AsnEncodeSwapTag; cSwapped++; cItem++; } ret = CRYPT_AsnEncodeSequence(dwCertEncodingType, items, cItem, dwFlags, pEncodePara, pbEncoded, pcbEncoded); } } __EXCEPT_PAGE_FAULT { SetLastError(STATUS_ACCESS_VIOLATION); } __ENDTRY return ret; } BOOL CRYPT_AsnEncodePKCSSignedInfo(CRYPT_SIGNED_INFO *signedInfo, void *pvData, DWORD *pcbData) { struct AsnEncodeSequenceItem items[7] = { { &signedInfo->version, CRYPT_AsnEncodeInt, 0 }, }; struct DERSetDescriptor digestAlgorithmsSet = { 0 }, certSet = { 0 }; struct DERSetDescriptor crlSet = { 0 }, signerSet = { 0 }; struct AsnEncodeTagSwappedItem swapped[2] = { { 0 } }; DWORD cItem = 1, cSwapped = 0; BOOL ret = TRUE; if (signedInfo->cSignerInfo) { digestAlgorithmsSet.cItems = signedInfo->cSignerInfo; digestAlgorithmsSet.items = signedInfo->rgSignerInfo; digestAlgorithmsSet.itemSize = sizeof(CMSG_SIGNER_INFO); digestAlgorithmsSet.itemOffset = offsetof(CMSG_SIGNER_INFO, HashAlgorithm); digestAlgorithmsSet.encode = CRYPT_AsnEncodeAlgorithmIdWithNullParams; items[cItem].pvStructInfo = &digestAlgorithmsSet; items[cItem].encodeFunc = CRYPT_DEREncodeItemsAsSet; cItem++; } items[cItem].pvStructInfo = &signedInfo->content; items[cItem].encodeFunc = CRYPT_AsnEncodePKCSContentInfoInternal; cItem++; if (signedInfo->cCertEncoded) { certSet.cItems = signedInfo->cCertEncoded; certSet.items = signedInfo->rgCertEncoded; certSet.itemSize = sizeof(CERT_BLOB); certSet.itemOffset = 0; certSet.encode = CRYPT_CopyEncodedBlob; swapped[cSwapped].tag = ASN_CONSTRUCTOR | ASN_CONTEXT | 0; swapped[cSwapped].pvStructInfo = &certSet; swapped[cSwapped].encodeFunc = CRYPT_DEREncodeItemsAsSet; items[cItem].pvStructInfo = &swapped[cSwapped]; items[cItem].encodeFunc = CRYPT_AsnEncodeSwapTag; cSwapped++; cItem++; } if (signedInfo->cCrlEncoded) { crlSet.cItems = signedInfo->cCrlEncoded; crlSet.items = signedInfo->rgCrlEncoded; crlSet.itemSize = sizeof(CRL_BLOB); crlSet.itemOffset = 0; crlSet.encode = CRYPT_CopyEncodedBlob; swapped[cSwapped].tag = ASN_CONSTRUCTOR | ASN_CONTEXT | 1; swapped[cSwapped].pvStructInfo = &crlSet; swapped[cSwapped].encodeFunc = CRYPT_DEREncodeItemsAsSet; items[cItem].pvStructInfo = &swapped[cSwapped]; items[cItem].encodeFunc = CRYPT_AsnEncodeSwapTag; cSwapped++; cItem++; } if (ret && signedInfo->cSignerInfo) { signerSet.cItems = signedInfo->cSignerInfo; signerSet.items = signedInfo->rgSignerInfo; signerSet.itemSize = sizeof(CMSG_SIGNER_INFO); signerSet.itemOffset = 0; signerSet.encode = CRYPT_AsnEncodePKCSSignerInfo; items[cItem].pvStructInfo = &signerSet; items[cItem].encodeFunc = CRYPT_DEREncodeItemsAsSet; cItem++; } if (ret) ret = CRYPT_AsnEncodeSequence(X509_ASN_ENCODING | PKCS_7_ASN_ENCODING, items, cItem, 0, NULL, pvData, pcbData); return ret; } static CryptEncodeObjectExFunc CRYPT_GetBuiltinEncoder(DWORD dwCertEncodingType, LPCSTR lpszStructType) { CryptEncodeObjectExFunc encodeFunc = NULL; if ((dwCertEncodingType & CERT_ENCODING_TYPE_MASK) != X509_ASN_ENCODING && (dwCertEncodingType & CMSG_ENCODING_TYPE_MASK) != PKCS_7_ASN_ENCODING) { SetLastError(ERROR_FILE_NOT_FOUND); return NULL; } if (!HIWORD(lpszStructType)) { switch (LOWORD(lpszStructType)) { case (WORD)X509_CERT: encodeFunc = CRYPT_AsnEncodeCert; break; case (WORD)X509_CERT_TO_BE_SIGNED: encodeFunc = CRYPT_AsnEncodeCertInfo; break; case (WORD)X509_CERT_CRL_TO_BE_SIGNED: encodeFunc = CRYPT_AsnEncodeCRLInfo; break; case (WORD)X509_EXTENSIONS: encodeFunc = CRYPT_AsnEncodeExtensions; break; case (WORD)X509_NAME_VALUE: encodeFunc = CRYPT_AsnEncodeNameValue; break; case (WORD)X509_NAME: encodeFunc = CRYPT_AsnEncodeName; break; case (WORD)X509_PUBLIC_KEY_INFO: encodeFunc = CRYPT_AsnEncodePubKeyInfo; break; case (WORD)X509_AUTHORITY_KEY_ID: encodeFunc = CRYPT_AsnEncodeAuthorityKeyId; break; case (WORD)X509_ALTERNATE_NAME: encodeFunc = CRYPT_AsnEncodeAltName; break; case (WORD)X509_BASIC_CONSTRAINTS: encodeFunc = CRYPT_AsnEncodeBasicConstraints; break; case (WORD)X509_BASIC_CONSTRAINTS2: encodeFunc = CRYPT_AsnEncodeBasicConstraints2; break; case (WORD)RSA_CSP_PUBLICKEYBLOB: encodeFunc = CRYPT_AsnEncodeRsaPubKey; break; case (WORD)X509_UNICODE_NAME: encodeFunc = CRYPT_AsnEncodeUnicodeName; break; case (WORD)PKCS_CONTENT_INFO: encodeFunc = CRYPT_AsnEncodePKCSContentInfo; break; case (WORD)PKCS_ATTRIBUTE: encodeFunc = CRYPT_AsnEncodePKCSAttribute; break; case (WORD)X509_UNICODE_NAME_VALUE: encodeFunc = CRYPT_AsnEncodeUnicodeNameValue; break; case (WORD)X509_OCTET_STRING: encodeFunc = CRYPT_AsnEncodeOctets; break; case (WORD)X509_BITS: case (WORD)X509_KEY_USAGE: encodeFunc = CRYPT_AsnEncodeBits; break; case (WORD)X509_INTEGER: encodeFunc = CRYPT_AsnEncodeInt; break; case (WORD)X509_MULTI_BYTE_INTEGER: encodeFunc = CRYPT_AsnEncodeInteger; break; case (WORD)X509_MULTI_BYTE_UINT: encodeFunc = CRYPT_AsnEncodeUnsignedInteger; break; case (WORD)X509_ENUMERATED: encodeFunc = CRYPT_AsnEncodeEnumerated; break; case (WORD)X509_CHOICE_OF_TIME: encodeFunc = CRYPT_AsnEncodeChoiceOfTime; break; case (WORD)X509_AUTHORITY_KEY_ID2: encodeFunc = CRYPT_AsnEncodeAuthorityKeyId2; break; case (WORD)X509_SEQUENCE_OF_ANY: encodeFunc = CRYPT_AsnEncodeSequenceOfAny; break; case (WORD)PKCS_UTC_TIME: encodeFunc = CRYPT_AsnEncodeUtcTime; break; case (WORD)X509_CRL_DIST_POINTS: encodeFunc = CRYPT_AsnEncodeCRLDistPoints; break; case (WORD)X509_ENHANCED_KEY_USAGE: encodeFunc = CRYPT_AsnEncodeEnhancedKeyUsage; break; case (WORD)PKCS_ATTRIBUTES: encodeFunc = CRYPT_AsnEncodePKCSAttributes; break; case (WORD)X509_ISSUING_DIST_POINT: encodeFunc = CRYPT_AsnEncodeIssuingDistPoint; break; case (WORD)PKCS7_SIGNER_INFO: encodeFunc = CRYPT_AsnEncodePKCSSignerInfo; break; } } else if (!strcmp(lpszStructType, szOID_CERT_EXTENSIONS)) encodeFunc = CRYPT_AsnEncodeExtensions; else if (!strcmp(lpszStructType, szOID_RSA_signingTime)) encodeFunc = CRYPT_AsnEncodeUtcTime; else if (!strcmp(lpszStructType, szOID_AUTHORITY_KEY_IDENTIFIER)) encodeFunc = CRYPT_AsnEncodeAuthorityKeyId; else if (!strcmp(lpszStructType, szOID_AUTHORITY_KEY_IDENTIFIER2)) encodeFunc = CRYPT_AsnEncodeAuthorityKeyId2; else if (!strcmp(lpszStructType, szOID_CRL_REASON_CODE)) encodeFunc = CRYPT_AsnEncodeEnumerated; else if (!strcmp(lpszStructType, szOID_KEY_USAGE)) encodeFunc = CRYPT_AsnEncodeBits; else if (!strcmp(lpszStructType, szOID_SUBJECT_KEY_IDENTIFIER)) encodeFunc = CRYPT_AsnEncodeOctets; else if (!strcmp(lpszStructType, szOID_BASIC_CONSTRAINTS)) encodeFunc = CRYPT_AsnEncodeBasicConstraints; else if (!strcmp(lpszStructType, szOID_BASIC_CONSTRAINTS2)) encodeFunc = CRYPT_AsnEncodeBasicConstraints2; else if (!strcmp(lpszStructType, szOID_ISSUER_ALT_NAME)) encodeFunc = CRYPT_AsnEncodeAltName; else if (!strcmp(lpszStructType, szOID_ISSUER_ALT_NAME2)) encodeFunc = CRYPT_AsnEncodeAltName; else if (!strcmp(lpszStructType, szOID_NEXT_UPDATE_LOCATION)) encodeFunc = CRYPT_AsnEncodeAltName; else if (!strcmp(lpszStructType, szOID_SUBJECT_ALT_NAME)) encodeFunc = CRYPT_AsnEncodeAltName; else if (!strcmp(lpszStructType, szOID_SUBJECT_ALT_NAME2)) encodeFunc = CRYPT_AsnEncodeAltName; else if (!strcmp(lpszStructType, szOID_CRL_DIST_POINTS)) encodeFunc = CRYPT_AsnEncodeCRLDistPoints; else if (!strcmp(lpszStructType, szOID_ENHANCED_KEY_USAGE)) encodeFunc = CRYPT_AsnEncodeEnhancedKeyUsage; else if (!strcmp(lpszStructType, szOID_ISSUING_DIST_POINT)) encodeFunc = CRYPT_AsnEncodeIssuingDistPoint; return encodeFunc; } static CryptEncodeObjectFunc CRYPT_LoadEncoderFunc(DWORD dwCertEncodingType, LPCSTR lpszStructType, HCRYPTOIDFUNCADDR *hFunc) { static HCRYPTOIDFUNCSET set = NULL; CryptEncodeObjectFunc encodeFunc = NULL; if (!set) set = CryptInitOIDFunctionSet(CRYPT_OID_ENCODE_OBJECT_FUNC, 0); CryptGetOIDFunctionAddress(set, dwCertEncodingType, lpszStructType, 0, (void **)&encodeFunc, hFunc); return encodeFunc; } static CryptEncodeObjectExFunc CRYPT_LoadEncoderExFunc(DWORD dwCertEncodingType, LPCSTR lpszStructType, HCRYPTOIDFUNCADDR *hFunc) { static HCRYPTOIDFUNCSET set = NULL; CryptEncodeObjectExFunc encodeFunc = NULL; if (!set) set = CryptInitOIDFunctionSet(CRYPT_OID_ENCODE_OBJECT_EX_FUNC, 0); CryptGetOIDFunctionAddress(set, dwCertEncodingType, lpszStructType, 0, (void **)&encodeFunc, hFunc); return encodeFunc; } BOOL WINAPI CryptEncodeObject(DWORD dwCertEncodingType, LPCSTR lpszStructType, const void *pvStructInfo, BYTE *pbEncoded, DWORD *pcbEncoded) { BOOL ret = FALSE; HCRYPTOIDFUNCADDR hFunc = NULL; CryptEncodeObjectFunc pCryptEncodeObject = NULL; CryptEncodeObjectExFunc pCryptEncodeObjectEx = NULL; TRACE_(crypt)("(0x%08x, %s, %p, %p, %p)\n", dwCertEncodingType, debugstr_a(lpszStructType), pvStructInfo, pbEncoded, pcbEncoded); if (!pbEncoded && !pcbEncoded) { SetLastError(ERROR_INVALID_PARAMETER); return FALSE; } if (!(pCryptEncodeObjectEx = CRYPT_GetBuiltinEncoder(dwCertEncodingType, lpszStructType))) { TRACE_(crypt)("OID %s not found or unimplemented, looking for DLL\n", debugstr_a(lpszStructType)); pCryptEncodeObject = CRYPT_LoadEncoderFunc(dwCertEncodingType, lpszStructType, &hFunc); if (!pCryptEncodeObject) pCryptEncodeObjectEx = CRYPT_LoadEncoderExFunc(dwCertEncodingType, lpszStructType, &hFunc); } if (pCryptEncodeObject) ret = pCryptEncodeObject(dwCertEncodingType, lpszStructType, pvStructInfo, pbEncoded, pcbEncoded); else if (pCryptEncodeObjectEx) ret = pCryptEncodeObjectEx(dwCertEncodingType, lpszStructType, pvStructInfo, 0, NULL, pbEncoded, pcbEncoded); if (hFunc) CryptFreeOIDFunctionAddress(hFunc, 0); TRACE_(crypt)("returning %d\n", ret); return ret; } BOOL WINAPI CryptEncodeObjectEx(DWORD dwCertEncodingType, LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara, void *pvEncoded, DWORD *pcbEncoded) { BOOL ret = FALSE; HCRYPTOIDFUNCADDR hFunc = NULL; CryptEncodeObjectExFunc encodeFunc = NULL; TRACE_(crypt)("(0x%08x, %s, %p, 0x%08x, %p, %p, %p)\n", dwCertEncodingType, debugstr_a(lpszStructType), pvStructInfo, dwFlags, pEncodePara, pvEncoded, pcbEncoded); if (!pvEncoded && !pcbEncoded) { SetLastError(ERROR_INVALID_PARAMETER); return FALSE; } SetLastError(NOERROR); if (dwFlags & CRYPT_ENCODE_ALLOC_FLAG && pvEncoded) *(BYTE **)pvEncoded = NULL; encodeFunc = CRYPT_GetBuiltinEncoder(dwCertEncodingType, lpszStructType); if (!encodeFunc) { TRACE_(crypt)("OID %s not found or unimplemented, looking for DLL\n", debugstr_a(lpszStructType)); encodeFunc = CRYPT_LoadEncoderExFunc(dwCertEncodingType, lpszStructType, &hFunc); } if (encodeFunc) ret = encodeFunc(dwCertEncodingType, lpszStructType, pvStructInfo, dwFlags, pEncodePara, pvEncoded, pcbEncoded); else { CryptEncodeObjectFunc pCryptEncodeObject = CRYPT_LoadEncoderFunc(dwCertEncodingType, lpszStructType, &hFunc); if (pCryptEncodeObject) { if (dwFlags & CRYPT_ENCODE_ALLOC_FLAG) { ret = pCryptEncodeObject(dwCertEncodingType, lpszStructType, pvStructInfo, NULL, pcbEncoded); if (ret && (ret = CRYPT_EncodeEnsureSpace(dwFlags, pEncodePara, pvEncoded, pcbEncoded, *pcbEncoded))) ret = pCryptEncodeObject(dwCertEncodingType, lpszStructType, pvStructInfo, *(BYTE **)pvEncoded, pcbEncoded); } else ret = pCryptEncodeObject(dwCertEncodingType, lpszStructType, pvStructInfo, pvEncoded, pcbEncoded); } } if (hFunc) CryptFreeOIDFunctionAddress(hFunc, 0); TRACE_(crypt)("returning %d\n", ret); return ret; } BOOL WINAPI CryptExportPublicKeyInfo(HCRYPTPROV_OR_NCRYPT_KEY_HANDLE hCryptProv, DWORD dwKeySpec, DWORD dwCertEncodingType, PCERT_PUBLIC_KEY_INFO pInfo, DWORD *pcbInfo) { return CryptExportPublicKeyInfoEx(hCryptProv, dwKeySpec, dwCertEncodingType, NULL, 0, NULL, pInfo, pcbInfo); } static BOOL WINAPI CRYPT_ExportRsaPublicKeyInfoEx(HCRYPTPROV_OR_NCRYPT_KEY_HANDLE hCryptProv, DWORD dwKeySpec, DWORD dwCertEncodingType, LPSTR pszPublicKeyObjId, DWORD dwFlags, void *pvAuxInfo, PCERT_PUBLIC_KEY_INFO pInfo, DWORD *pcbInfo) { BOOL ret; HCRYPTKEY key; static CHAR oid[] = szOID_RSA_RSA; TRACE_(crypt)("(%08lx, %d, %08x, %s, %08x, %p, %p, %p)\n", hCryptProv, dwKeySpec, dwCertEncodingType, debugstr_a(pszPublicKeyObjId), dwFlags, pvAuxInfo, pInfo, pcbInfo); if (!pszPublicKeyObjId) pszPublicKeyObjId = oid; if ((ret = CryptGetUserKey(hCryptProv, dwKeySpec, &key))) { DWORD keySize = 0; ret = CryptExportKey(key, 0, PUBLICKEYBLOB, 0, NULL, &keySize); if (ret) { LPBYTE pubKey = CryptMemAlloc(keySize); if (pubKey) { ret = CryptExportKey(key, 0, PUBLICKEYBLOB, 0, pubKey, &keySize); if (ret) { DWORD encodedLen = 0; ret = CryptEncodeObject(dwCertEncodingType, RSA_CSP_PUBLICKEYBLOB, pubKey, NULL, &encodedLen); if (ret) { DWORD sizeNeeded = sizeof(CERT_PUBLIC_KEY_INFO) + strlen(pszPublicKeyObjId) + 1 + encodedLen; if (!pInfo) *pcbInfo = sizeNeeded; else if (*pcbInfo < sizeNeeded) { SetLastError(ERROR_MORE_DATA); *pcbInfo = sizeNeeded; ret = FALSE; } else { pInfo->Algorithm.pszObjId = (char *)pInfo + sizeof(CERT_PUBLIC_KEY_INFO); lstrcpyA(pInfo->Algorithm.pszObjId, pszPublicKeyObjId); pInfo->Algorithm.Parameters.cbData = 0; pInfo->Algorithm.Parameters.pbData = NULL; pInfo->PublicKey.pbData = (BYTE *)pInfo->Algorithm.pszObjId + lstrlenA(pInfo->Algorithm.pszObjId) + 1; pInfo->PublicKey.cbData = encodedLen; pInfo->PublicKey.cUnusedBits = 0; ret = CryptEncodeObject(dwCertEncodingType, RSA_CSP_PUBLICKEYBLOB, pubKey, pInfo->PublicKey.pbData, &pInfo->PublicKey.cbData); } } } CryptMemFree(pubKey); } else ret = FALSE; } CryptDestroyKey(key); } return ret; } typedef BOOL (WINAPI *ExportPublicKeyInfoExFunc)(HCRYPTPROV_OR_NCRYPT_KEY_HANDLE hCryptProv, DWORD dwKeySpec, DWORD dwCertEncodingType, LPSTR pszPublicKeyObjId, DWORD dwFlags, void *pvAuxInfo, PCERT_PUBLIC_KEY_INFO pInfo, DWORD *pcbInfo); BOOL WINAPI CryptExportPublicKeyInfoEx(HCRYPTPROV_OR_NCRYPT_KEY_HANDLE hCryptProv, DWORD dwKeySpec, DWORD dwCertEncodingType, LPSTR pszPublicKeyObjId, DWORD dwFlags, void *pvAuxInfo, PCERT_PUBLIC_KEY_INFO pInfo, DWORD *pcbInfo) { static HCRYPTOIDFUNCSET set = NULL; BOOL ret; ExportPublicKeyInfoExFunc exportFunc = NULL; HCRYPTOIDFUNCADDR hFunc = NULL; TRACE_(crypt)("(%08lx, %d, %08x, %s, %08x, %p, %p, %p)\n", hCryptProv, dwKeySpec, dwCertEncodingType, debugstr_a(pszPublicKeyObjId), dwFlags, pvAuxInfo, pInfo, pcbInfo); if (!hCryptProv) { SetLastError(ERROR_INVALID_PARAMETER); return FALSE; } if (pszPublicKeyObjId) { if (!set) set = CryptInitOIDFunctionSet(CRYPT_OID_EXPORT_PUBLIC_KEY_INFO_FUNC, 0); CryptGetOIDFunctionAddress(set, dwCertEncodingType, pszPublicKeyObjId, 0, (void **)&exportFunc, &hFunc); } if (!exportFunc) exportFunc = CRYPT_ExportRsaPublicKeyInfoEx; ret = exportFunc(hCryptProv, dwKeySpec, dwCertEncodingType, pszPublicKeyObjId, dwFlags, pvAuxInfo, pInfo, pcbInfo); if (hFunc) CryptFreeOIDFunctionAddress(hFunc, 0); return ret; } BOOL WINAPI CryptImportPublicKeyInfo(HCRYPTPROV hCryptProv, DWORD dwCertEncodingType, PCERT_PUBLIC_KEY_INFO pInfo, HCRYPTKEY *phKey) { return CryptImportPublicKeyInfoEx(hCryptProv, dwCertEncodingType, pInfo, 0, 0, NULL, phKey); } static BOOL WINAPI CRYPT_ImportRsaPublicKeyInfoEx(HCRYPTPROV hCryptProv, DWORD dwCertEncodingType, PCERT_PUBLIC_KEY_INFO pInfo, ALG_ID aiKeyAlg, DWORD dwFlags, void *pvAuxInfo, HCRYPTKEY *phKey) { BOOL ret; DWORD pubKeySize = 0; TRACE_(crypt)("(%08lx, %d, %p, %d, %08x, %p, %p)\n", hCryptProv, dwCertEncodingType, pInfo, aiKeyAlg, dwFlags, pvAuxInfo, phKey); ret = CryptDecodeObject(dwCertEncodingType, RSA_CSP_PUBLICKEYBLOB, pInfo->PublicKey.pbData, pInfo->PublicKey.cbData, 0, NULL, &pubKeySize); if (ret) { LPBYTE pubKey = CryptMemAlloc(pubKeySize); if (pubKey) { ret = CryptDecodeObject(dwCertEncodingType, RSA_CSP_PUBLICKEYBLOB, pInfo->PublicKey.pbData, pInfo->PublicKey.cbData, 0, pubKey, &pubKeySize); if (ret) ret = CryptImportKey(hCryptProv, pubKey, pubKeySize, 0, 0, phKey); CryptMemFree(pubKey); } else ret = FALSE; } return ret; } typedef BOOL (WINAPI *ImportPublicKeyInfoExFunc)(HCRYPTPROV hCryptProv, DWORD dwCertEncodingType, PCERT_PUBLIC_KEY_INFO pInfo, ALG_ID aiKeyAlg, DWORD dwFlags, void *pvAuxInfo, HCRYPTKEY *phKey); BOOL WINAPI CryptImportPublicKeyInfoEx(HCRYPTPROV hCryptProv, DWORD dwCertEncodingType, PCERT_PUBLIC_KEY_INFO pInfo, ALG_ID aiKeyAlg, DWORD dwFlags, void *pvAuxInfo, HCRYPTKEY *phKey) { static HCRYPTOIDFUNCSET set = NULL; BOOL ret; ImportPublicKeyInfoExFunc importFunc = NULL; HCRYPTOIDFUNCADDR hFunc = NULL; TRACE_(crypt)("(%08lx, %d, %p, %d, %08x, %p, %p)\n", hCryptProv, dwCertEncodingType, pInfo, aiKeyAlg, dwFlags, pvAuxInfo, phKey); if (!set) set = CryptInitOIDFunctionSet(CRYPT_OID_IMPORT_PUBLIC_KEY_INFO_FUNC, 0); CryptGetOIDFunctionAddress(set, dwCertEncodingType, pInfo->Algorithm.pszObjId, 0, (void **)&importFunc, &hFunc); if (!importFunc) importFunc = CRYPT_ImportRsaPublicKeyInfoEx; ret = importFunc(hCryptProv, dwCertEncodingType, pInfo, aiKeyAlg, dwFlags, pvAuxInfo, phKey); if (hFunc) CryptFreeOIDFunctionAddress(hFunc, 0); return ret; }