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crypt32: Make it clearer where alg ids come from in CryptVerifyCertificateSignatureEx.

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This commit is contained in:
Juan Lang 2006-10-03 08:32:10 -07:00 committed by Alexandre Julliard
parent f230f63ad0
commit 44ba993b6e
1 changed files with 37 additions and 6 deletions
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43
dlls/crypt32/cert.c
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@ -1326,22 +1326,53 @@ static BOOL CRYPT_VerifyCertSignatureFromPublicKeyInfo(HCRYPTPROV hCryptProv,
PCERT_SIGNED_CONTENT_INFO signedCert)
{
BOOL ret;
ALG_ID algID = CertOIDToAlgId(pubKeyInfo->Algorithm.pszObjId);
HCRYPTKEY key;
PCCRYPT_OID_INFO info;
ALG_ID pubKeyID, hashID;
info = CryptFindOIDInfo(CRYPT_OID_INFO_OID_KEY,
pubKeyInfo->Algorithm.pszObjId, 0);
if (!info || (info->dwGroupId != CRYPT_PUBKEY_ALG_OID_GROUP_ID &&
info->dwGroupId != CRYPT_SIGN_ALG_OID_GROUP_ID))
{
SetLastError(NTE_BAD_ALGID);
return FALSE;
}
if (info->dwGroupId == CRYPT_PUBKEY_ALG_OID_GROUP_ID)
{
switch (info->Algid)
{
case CALG_RSA_KEYX:
pubKeyID = CALG_RSA_SIGN;
hashID = CALG_SHA1;
break;
case CALG_RSA_SIGN:
pubKeyID = CALG_RSA_SIGN;
hashID = CALG_SHA1;
break;
default:
FIXME("unimplemented for %s\n", pubKeyInfo->Algorithm.pszObjId);
return FALSE;
}
}
else
{
hashID = info->Algid;
if (info->ExtraInfo.cbData >= sizeof(ALG_ID))
pubKeyID = *(ALG_ID *)info->ExtraInfo.pbData;
else
pubKeyID = hashID;
}
/* Load the default provider if necessary */
if (!hCryptProv)
hCryptProv = CRYPT_GetDefaultProvider();
ret = CryptImportPublicKeyInfoEx(hCryptProv, dwCertEncodingType,
pubKeyInfo, algID, 0, NULL, &key);
pubKeyInfo, pubKeyID, 0, NULL, &key);
if (ret)
{
HCRYPTHASH hash;
/* Some key algorithms aren't hash algorithms, so map them */
if (algID == CALG_RSA_SIGN || algID == CALG_RSA_KEYX)
algID = CALG_SHA1;
ret = CryptCreateHash(hCryptProv, algID, 0, 0, &hash);
ret = CryptCreateHash(hCryptProv, hashID, 0, 0, &hash);
if (ret)
{
ret = CryptHashData(hash, signedCert->ToBeSigned.pbData,