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Sweden-Number/dlls/crypt32/encode.c

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/*
* Copyright 2005 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 is
* undocumented, 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:
* http://msdn.microsoft.com/library/en-us/seccrypto/security/constants_for_cryptencodeobject_and_cryptdecodeobject.asp
*/
#include <assert.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#define NONAMELESSUNION
#include "windef.h"
#include "winbase.h"
#include "excpt.h"
#include "wincrypt.h"
#include "winreg.h"
#include "snmp.h"
#include "wine/debug.h"
#include "wine/exception.h"
#include "wine/unicode.h"
#include "crypt32_private.h"
WINE_DEFAULT_DEBUG_CHANNEL(crypt);
typedef BOOL (WINAPI *CryptEncodeObjectFunc)(DWORD, LPCSTR, const void *,
BYTE *, DWORD *);
typedef BOOL (WINAPI *CryptEncodeObjectExFunc)(DWORD, LPCSTR, const void *,
DWORD, PCRYPT_ENCODE_PARA, 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.
*/
static 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_AsnEncodeOctets(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 WINAPI CryptEncodeObject(DWORD dwCertEncodingType, LPCSTR lpszStructType,
const void *pvStructInfo, BYTE *pbEncoded, DWORD *pcbEncoded)
{
static HCRYPTOIDFUNCSET set = NULL;
BOOL ret = FALSE;
HCRYPTOIDFUNCADDR hFunc;
CryptEncodeObjectFunc pCryptEncodeObject;
TRACE("(0x%08x, %s, %p, %p, %p)\n", dwCertEncodingType,
debugstr_a(lpszStructType), pvStructInfo, pbEncoded,
pcbEncoded);
if (!pbEncoded && !pcbEncoded)
{
SetLastError(ERROR_INVALID_PARAMETER);
return FALSE;
}
/* Try registered DLL first.. */
if (!set)
set = CryptInitOIDFunctionSet(CRYPT_OID_ENCODE_OBJECT_FUNC, 0);
CryptGetOIDFunctionAddress(set, dwCertEncodingType, lpszStructType, 0,
(void **)&pCryptEncodeObject, &hFunc);
if (pCryptEncodeObject)
{
ret = pCryptEncodeObject(dwCertEncodingType, lpszStructType,
pvStructInfo, pbEncoded, pcbEncoded);
CryptFreeOIDFunctionAddress(hFunc, 0);
}
else
{
/* If not, use CryptEncodeObjectEx */
ret = CryptEncodeObjectEx(dwCertEncodingType, lpszStructType,
pvStructInfo, 0, NULL, pbEncoded, pcbEncoded);
}
return ret;
}
/* Helper function to check *pcbEncoded, set it to the required size, and
* optionally to allocate memory. Assumes pbEncoded is not NULL.
* If CRYPT_ENCODE_ALLOC_FLAG is set in dwFlags, *pbEncoded will be set to a
* pointer to the newly allocated memory.
*/
static 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;
}
static 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;
}
struct AsnEncodeSequenceItem
{
const void *pvStructInfo;
CryptEncodeObjectExFunc encodeFunc;
DWORD size; /* used during encoding, not for your use */
};
static 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;
}
struct AsnConstructedItem
{
BYTE tag;
const void *pvStructInfo;
CryptEncodeObjectExFunc encodeFunc;
};
static 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;
}
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 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;
}
static 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;
}
/* This encodes as a SET OF, which in DER must be lexicographically sorted.
*/
static BOOL WINAPI CRYPT_AsnEncodeRdn(DWORD dwCertEncodingType, CERT_RDN *rdn,
CryptEncodeObjectExFunc nameValueEncodeFunc, BYTE *pbEncoded,
DWORD *pcbEncoded)
{
BOOL ret;
CRYPT_DER_BLOB *blobs = NULL;
__TRY
{
DWORD bytesNeeded = 0, lenBytes, i;
blobs = NULL;
ret = TRUE;
if (rdn->cRDNAttr)
{
blobs = CryptMemAlloc(rdn->cRDNAttr * sizeof(CRYPT_DER_BLOB));
if (!blobs)
ret = FALSE;
else
memset(blobs, 0, rdn->cRDNAttr * sizeof(CRYPT_DER_BLOB));
}
for (i = 0; ret && i < rdn->cRDNAttr; i++)
{
ret = CRYPT_AsnEncodeRdnAttr(dwCertEncodingType, &rdn->rgRDNAttr[i],
nameValueEncodeFunc, NULL, &blobs[i].cbData);
if (ret)
bytesNeeded += blobs[i].cbData;
else
{
/* Have to propagate index of failing character */
*pcbEncoded = blobs[i].cbData;
}
}
if (ret)
{
CRYPT_EncodeLen(bytesNeeded, NULL, &lenBytes);
bytesNeeded += 1 + lenBytes;
if (pbEncoded)
{
if (*pcbEncoded < bytesNeeded)
{
SetLastError(ERROR_MORE_DATA);
ret = FALSE;
}
else
{
for (i = 0; ret && i < rdn->cRDNAttr; i++)
{
blobs[i].pbData = CryptMemAlloc(blobs[i].cbData);
if (!blobs[i].pbData)
ret = FALSE;
else
{
ret = CRYPT_AsnEncodeRdnAttr(dwCertEncodingType,
&rdn->rgRDNAttr[i], nameValueEncodeFunc,
blobs[i].pbData, &blobs[i].cbData);
if (!ret)
*pcbEncoded = blobs[i].cbData;
}
}
if (ret)
{
qsort(blobs, rdn->cRDNAttr, sizeof(CRYPT_DER_BLOB),
BLOBComp);
*pbEncoded++ = ASN_CONSTRUCTOR | ASN_SETOF;
CRYPT_EncodeLen(bytesNeeded - lenBytes - 1, pbEncoded,
&lenBytes);
pbEncoded += lenBytes;
for (i = 0; ret && i < rdn->cRDNAttr; i++)
{
memcpy(pbEncoded, blobs[i].pbData, blobs[i].cbData);
pbEncoded += blobs[i].cbData;
}
}
}
}
if (ret)
*pcbEncoded = bytesNeeded;
}
if (blobs)
{
for (i = 0; i < rdn->cRDNAttr; i++)
CryptMemFree(blobs[i].pbData);
}
}
__EXCEPT_PAGE_FAULT
{
SetLastError(STATUS_ACCESS_VIOLATION);
ret = FALSE;
}
__ENDTRY
CryptMemFree(blobs);
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 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;
ret = TRUE;
switch (entry->dwAltNameChoice)
{
case CERT_ALT_NAME_RFC822_NAME:
case CERT_ALT_NAME_DNS_NAME:
case CERT_ALT_NAME_URL:
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_IP_ADDRESS:
dataLen = entry->u.IPAddress.cbData;
break;
case CERT_ALT_NAME_REGISTERED_ID:
/* FIXME: encode OID */
case CERT_ALT_NAME_OTHER_NAME:
case CERT_ALT_NAME_DIRECTORY_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++ = ASN_CONTEXT | (entry->dwAltNameChoice - 1);
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_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_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_AsnEncodeInteger;
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_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;
}
static 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;
}
static 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;
}
BOOL WINAPI CryptEncodeObjectEx(DWORD dwCertEncodingType, LPCSTR lpszStructType,
const void *pvStructInfo, DWORD dwFlags, PCRYPT_ENCODE_PARA pEncodePara,
void *pvEncoded, DWORD *pcbEncoded)
{
static HCRYPTOIDFUNCSET set = NULL;
BOOL ret = FALSE;
CryptEncodeObjectExFunc encodeFunc = NULL;
HCRYPTOIDFUNCADDR hFunc = NULL;
TRACE("(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;
}
if ((dwCertEncodingType & CERT_ENCODING_TYPE_MASK) != X509_ASN_ENCODING
&& (dwCertEncodingType & CMSG_ENCODING_TYPE_MASK) != PKCS_7_ASN_ENCODING)
{
SetLastError(ERROR_FILE_NOT_FOUND);
return FALSE;
}
SetLastError(NOERROR);
if (dwFlags & CRYPT_ENCODE_ALLOC_FLAG && pvEncoded)
*(BYTE **)pvEncoded = 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)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_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)X509_ISSUING_DIST_POINT:
encodeFunc = CRYPT_AsnEncodeIssuingDistPoint;
break;
default:
FIXME("%d: unimplemented\n", LOWORD(lpszStructType));
}
}
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_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;
else
TRACE("OID %s not found or unimplemented, looking for DLL\n",
debugstr_a(lpszStructType));
if (!encodeFunc)
{
if (!set)
set = CryptInitOIDFunctionSet(CRYPT_OID_ENCODE_OBJECT_EX_FUNC, 0);
CryptGetOIDFunctionAddress(set, dwCertEncodingType, lpszStructType, 0,
(void **)&encodeFunc, &hFunc);
}
if (encodeFunc)
ret = encodeFunc(dwCertEncodingType, lpszStructType, pvStructInfo,
dwFlags, pEncodePara, pvEncoded, pcbEncoded);
else
SetLastError(ERROR_FILE_NOT_FOUND);
if (hFunc)
CryptFreeOIDFunctionAddress(hFunc, 0);
return ret;
}
BOOL WINAPI CryptExportPublicKeyInfo(HCRYPTPROV 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 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("(%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 hCryptProv,
DWORD dwKeySpec, DWORD dwCertEncodingType, LPSTR pszPublicKeyObjId,
DWORD dwFlags, void *pvAuxInfo, PCERT_PUBLIC_KEY_INFO pInfo, DWORD *pcbInfo);
BOOL WINAPI CryptExportPublicKeyInfoEx(HCRYPTPROV 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("(%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("(%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("(%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;
}
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