271 lines
8.6 KiB
C
271 lines
8.6 KiB
C
/*
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* Copyright 2007 Juan Lang
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include <stdarg.h>
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#include "windef.h"
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#include "winbase.h"
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#include "wincrypt.h"
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#include "wine/debug.h"
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WINE_DEFAULT_DEBUG_CHANNEL(crypt);
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HCERTSTORE WINAPI CryptGetMessageCertificates(DWORD dwMsgAndCertEncodingType,
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HCRYPTPROV_LEGACY hCryptProv, DWORD dwFlags, const BYTE* pbSignedBlob,
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DWORD cbSignedBlob)
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{
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CRYPT_DATA_BLOB blob = { cbSignedBlob, (LPBYTE)pbSignedBlob };
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TRACE("(%08x, %ld, %d08x %p, %d)\n", dwMsgAndCertEncodingType, hCryptProv,
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dwFlags, pbSignedBlob, cbSignedBlob);
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return CertOpenStore(CERT_STORE_PROV_PKCS7, dwMsgAndCertEncodingType,
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hCryptProv, dwFlags, &blob);
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}
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LONG WINAPI CryptGetMessageSignerCount(DWORD dwMsgEncodingType,
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const BYTE *pbSignedBlob, DWORD cbSignedBlob)
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{
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HCRYPTMSG msg;
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LONG count = -1;
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TRACE("(%08x, %p, %d)\n", dwMsgEncodingType, pbSignedBlob, cbSignedBlob);
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msg = CryptMsgOpenToDecode(dwMsgEncodingType, 0, 0, 0, NULL, NULL);
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if (msg)
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{
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if (CryptMsgUpdate(msg, pbSignedBlob, cbSignedBlob, TRUE))
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{
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DWORD size = sizeof(count);
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CryptMsgGetParam(msg, CMSG_SIGNER_COUNT_PARAM, 0, &count, &size);
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}
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CryptMsgClose(msg);
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}
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return count;
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}
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static BOOL CRYPT_CopyParam(void *pvData, DWORD *pcbData, const void *src,
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DWORD len)
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{
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BOOL ret = TRUE;
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if (!pvData)
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*pcbData = len;
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else if (*pcbData < len)
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{
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*pcbData = len;
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SetLastError(ERROR_MORE_DATA);
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ret = FALSE;
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}
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else
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{
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*pcbData = len;
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memcpy(pvData, src, len);
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}
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return ret;
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}
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static CERT_INFO *CRYPT_GetSignerCertInfoFromMsg(HCRYPTMSG msg,
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DWORD dwSignerIndex)
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{
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CERT_INFO *certInfo = NULL;
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DWORD size;
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if (CryptMsgGetParam(msg, CMSG_SIGNER_CERT_INFO_PARAM, dwSignerIndex, NULL,
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&size))
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{
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certInfo = CryptMemAlloc(size);
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if (certInfo)
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{
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if (!CryptMsgGetParam(msg, CMSG_SIGNER_CERT_INFO_PARAM,
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dwSignerIndex, certInfo, &size))
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{
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CryptMemFree(certInfo);
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certInfo = NULL;
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}
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}
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}
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return certInfo;
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}
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static PCCERT_CONTEXT WINAPI CRYPT_DefaultGetSignerCertificate(void *pvGetArg,
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DWORD dwCertEncodingType, PCERT_INFO pSignerId, HCERTSTORE hMsgCertStore)
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{
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return CertFindCertificateInStore(hMsgCertStore, dwCertEncodingType, 0,
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CERT_FIND_SUBJECT_CERT, pSignerId, NULL);
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}
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static inline PCCERT_CONTEXT CRYPT_GetSignerCertificate(HCRYPTMSG msg,
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PCRYPT_VERIFY_MESSAGE_PARA pVerifyPara, PCERT_INFO certInfo, HCERTSTORE store)
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{
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PFN_CRYPT_GET_SIGNER_CERTIFICATE getCert;
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if (pVerifyPara->pfnGetSignerCertificate)
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getCert = pVerifyPara->pfnGetSignerCertificate;
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else
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getCert = CRYPT_DefaultGetSignerCertificate;
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return getCert(pVerifyPara->pvGetArg,
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pVerifyPara->dwMsgAndCertEncodingType, certInfo, store);
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}
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BOOL WINAPI CryptVerifyMessageSignature(PCRYPT_VERIFY_MESSAGE_PARA pVerifyPara,
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DWORD dwSignerIndex, const BYTE* pbSignedBlob, DWORD cbSignedBlob,
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BYTE* pbDecoded, DWORD* pcbDecoded, PCCERT_CONTEXT* ppSignerCert)
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{
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BOOL ret = FALSE;
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DWORD size;
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CRYPT_CONTENT_INFO *contentInfo;
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TRACE("(%p, %d, %p, %d, %p, %p, %p)\n",
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pVerifyPara, dwSignerIndex, pbSignedBlob, cbSignedBlob,
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pbDecoded, pcbDecoded, ppSignerCert);
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if (ppSignerCert)
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*ppSignerCert = NULL;
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if (pcbDecoded)
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*pcbDecoded = 0;
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if (!pVerifyPara ||
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pVerifyPara->cbSize != sizeof(CRYPT_VERIFY_MESSAGE_PARA) ||
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GET_CMSG_ENCODING_TYPE(pVerifyPara->dwMsgAndCertEncodingType) !=
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PKCS_7_ASN_ENCODING)
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{
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SetLastError(E_INVALIDARG);
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return FALSE;
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}
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ret = CryptDecodeObjectEx(pVerifyPara->dwMsgAndCertEncodingType,
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PKCS_CONTENT_INFO, pbSignedBlob, cbSignedBlob,
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CRYPT_DECODE_ALLOC_FLAG | CRYPT_DECODE_NOCOPY_FLAG, NULL,
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(LPBYTE)&contentInfo, &size);
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if (ret)
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{
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if (strcmp(contentInfo->pszObjId, szOID_RSA_signedData))
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{
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SetLastError(CRYPT_E_UNEXPECTED_MSG_TYPE);
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ret = FALSE;
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}
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else
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{
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HCRYPTMSG msg = CryptMsgOpenToDecode(
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pVerifyPara->dwMsgAndCertEncodingType, 0, CMSG_SIGNED,
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pVerifyPara->hCryptProv, NULL, NULL);
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if (msg)
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{
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ret = CryptMsgUpdate(msg, contentInfo->Content.pbData,
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contentInfo->Content.cbData, TRUE);
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if (ret && pcbDecoded)
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ret = CRYPT_CopyParam(pbDecoded, pcbDecoded,
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contentInfo->Content.pbData, contentInfo->Content.cbData);
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if (ret)
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{
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CERT_INFO *certInfo = CRYPT_GetSignerCertInfoFromMsg(msg,
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dwSignerIndex);
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ret = FALSE;
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if (certInfo)
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{
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HCERTSTORE store = CertOpenStore(CERT_STORE_PROV_MSG,
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pVerifyPara->dwMsgAndCertEncodingType,
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pVerifyPara->hCryptProv, 0, msg);
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if (store)
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{
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PCCERT_CONTEXT cert = CRYPT_GetSignerCertificate(
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msg, pVerifyPara, certInfo, store);
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if (cert)
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{
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ret = CryptMsgControl(msg, 0,
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CMSG_CTRL_VERIFY_SIGNATURE, cert->pCertInfo);
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if (ret && ppSignerCert)
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*ppSignerCert = cert;
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else
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CertFreeCertificateContext(cert);
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}
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CertCloseStore(store, 0);
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}
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}
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CryptMemFree(certInfo);
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}
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CryptMsgClose(msg);
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}
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}
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LocalFree(contentInfo);
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}
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TRACE("returning %d\n", ret);
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return ret;
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}
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BOOL WINAPI CryptHashMessage(PCRYPT_HASH_MESSAGE_PARA pHashPara,
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BOOL fDetachedHash, DWORD cToBeHashed, const BYTE *rgpbToBeHashed[],
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DWORD rgcbToBeHashed[], BYTE *pbHashedBlob, DWORD *pcbHashedBlob,
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BYTE *pbComputedHash, DWORD *pcbComputedHash)
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{
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DWORD i, flags;
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BOOL ret = FALSE;
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HCRYPTMSG msg;
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CMSG_HASHED_ENCODE_INFO info;
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TRACE("(%p, %d, %d, %p, %p, %p, %p, %p, %p)\n", pHashPara, fDetachedHash,
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cToBeHashed, rgpbToBeHashed, rgcbToBeHashed, pbHashedBlob, pcbHashedBlob,
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pbComputedHash, pcbComputedHash);
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if (pHashPara->cbSize != sizeof(CRYPT_HASH_MESSAGE_PARA))
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{
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SetLastError(E_INVALIDARG);
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return FALSE;
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}
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/* Native seems to ignore any encoding type other than the expected
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* PKCS_7_ASN_ENCODING
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*/
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if (GET_CMSG_ENCODING_TYPE(pHashPara->dwMsgEncodingType) !=
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PKCS_7_ASN_ENCODING)
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return TRUE;
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/* Native also seems to do nothing if the output parameter isn't given */
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if (!pcbHashedBlob)
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return TRUE;
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flags = fDetachedHash ? CMSG_DETACHED_FLAG : 0;
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memset(&info, 0, sizeof(info));
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info.cbSize = sizeof(info);
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info.hCryptProv = pHashPara->hCryptProv;
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memcpy(&info.HashAlgorithm, &pHashPara->HashAlgorithm,
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sizeof(info.HashAlgorithm));
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info.pvHashAuxInfo = pHashPara->pvHashAuxInfo;
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msg = CryptMsgOpenToEncode(pHashPara->dwMsgEncodingType, flags, CMSG_HASHED,
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&info, NULL, NULL);
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if (msg)
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{
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for (i = 0, ret = TRUE; ret && i < cToBeHashed; i++)
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ret = CryptMsgUpdate(msg, rgpbToBeHashed[i], rgcbToBeHashed[i],
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i == cToBeHashed - 1 ? TRUE : FALSE);
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if (ret)
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{
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ret = CryptMsgGetParam(msg, CMSG_CONTENT_PARAM, 0, pbHashedBlob,
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pcbHashedBlob);
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if (ret && pcbComputedHash)
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ret = CryptMsgGetParam(msg, CMSG_COMPUTED_HASH_PARAM, 0,
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pbComputedHash, pcbComputedHash);
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}
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CryptMsgClose(msg);
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}
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return ret;
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}
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