Commit 2ffc042e authored by Juan Lang's avatar Juan Lang Committed by Alexandre Julliard

crypt32: Implement PFXIsPFXBlob.

parent 71279856
......@@ -219,6 +219,7 @@
@ stdcall PFXExportCertStore(ptr ptr ptr long)
@ stdcall PFXExportCertStoreEx(ptr ptr ptr ptr long)
@ stub PFXImportCertStore
@ stdcall PFXIsPFXBlob(ptr)
@ stub RegCreateHKCUKeyExU
@ stub RegCreateKeyExU
@ stub RegDeleteValueU
......
......@@ -5511,3 +5511,38 @@ BOOL WINAPI CryptDecodeObjectEx(DWORD dwCertEncodingType, LPCSTR lpszStructType,
TRACE_(crypt)("returning %d\n", ret);
return ret;
}
BOOL WINAPI PFXIsPFXBlob(CRYPT_DATA_BLOB *pPFX)
{
BOOL ret;
TRACE("(%p)\n", pPFX);
/* A PFX blob is an asn.1-encoded sequence, consisting of at least a
* version integer of length 1 (3 encoded byes) and at least one other
* datum (two encoded bytes), plus at least two bytes for the outer
* sequence. Thus, even an empty PFX blob is at least 7 bytes in length.
*/
if (pPFX->cbData < 7)
ret = FALSE;
else if (pPFX->pbData[0] == ASN_SEQUENCE)
{
DWORD len;
if ((ret = CRYPT_GetLengthIndefinite(pPFX->pbData, pPFX->cbData, &len)))
{
BYTE lenLen = GET_LEN_BYTES(pPFX->pbData[1]);
/* Need at least three bytes for the integer version */
if (pPFX->cbData < 1 + lenLen + 3)
ret = FALSE;
else if (pPFX->pbData[1 + lenLen] != ASN_INTEGER || /* Tag */
pPFX->pbData[1 + lenLen + 1] != 1 || /* Definite length */
pPFX->pbData[1 + lenLen + 2] != 3) /* PFX version */
ret = FALSE;
}
}
else
ret = FALSE;
return ret;
}
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