private static uint OidToAlgorithmId(Oid oid)
{
using (SafeLocalAllocHandle oidHandle = X509Utils.StringToAnsiPtr(oid.Value))
{
CapiNative.CRYPT_OID_INFO oidInfo = CapiNative.CryptFindOIDInfo(CapiNative.CRYPT_OID_INFO_OID_KEY, oidHandle, 0);
return(oidInfo.Algid);
}
}
private void DecodeExtension()
{
uint cbDecoded = 0;
SafeLocalAllocHandle decoded = null;
SafeLocalAllocHandle pb = X509Utils.StringToAnsiPtr(CAPI.szOID_SUBJECT_KEY_IDENTIFIER);
bool result = CAPI.DecodeObject(pb.DangerousGetHandle(),
m_rawData,
out decoded,
out cbDecoded);
if (!result)
{
throw new CryptographicException(Marshal.GetLastWin32Error());
}
CAPI.CRYPTOAPI_BLOB pSubjectKeyIdentifier = (CAPI.CRYPTOAPI_BLOB)Marshal.PtrToStructure(decoded.DangerousGetHandle(), typeof(CAPI.CRYPTOAPI_BLOB));
byte[] hexArray = CAPI.BlobToByteArray(pSubjectKeyIdentifier);
m_subjectKeyIdentifier = X509Utils.EncodeHexString(hexArray);
m_decoded = true;
decoded.Dispose();
pb.Dispose();
}