public static byte[] GetKeyParameter(SafeKeyHandleImpl keyHandle, uint keyParamId)
{
uint dataLength = 0;
if (!CryptoApi.CryptGetKeyParam(keyHandle, keyParamId, null, ref dataLength, 0))
{
throw CreateWin32Error();
}
var dataBytes = new byte[dataLength];
if (!CryptoApi.CryptGetKeyParam(keyHandle, keyParamId, dataBytes, ref dataLength, 0))
{
throw CreateWin32Error();
}
return(dataBytes);
}
public static int GetKeyParameterInt32(SafeKeyHandleImpl keyHandle, uint keyParamId)
{
const int doubleWordSize = 4;
uint dwDataLength = doubleWordSize;
var dwDataBytes = new byte[doubleWordSize];
if (!CryptoApi.CryptGetKeyParam(keyHandle, keyParamId, dwDataBytes, ref dwDataLength, 0))
{
throw CreateWin32Error();
}
if (dwDataLength != doubleWordSize)
{
throw ExceptionUtility.CryptographicException(Constants.NTE_BAD_DATA);
}
return(BitConverter.ToInt32(dwDataBytes, 0));
}
/// <summary>
/// Возвращает сертификат X.509 для указанного ключа.
/// </summary>
/// <param name="keyHandle">Дескриптор ключа сертификата.</param>
public static X509Certificate2 GetKeyCertificate(SafeKeyHandleImpl keyHandle)
{
uint certDataLength = 0;
if (!CryptoApi.CryptGetKeyParam(keyHandle, Constants.KP_CERTIFICATE, null, ref certDataLength, 0))
{
if (Marshal.GetLastWin32Error() != Constants.ERROR_NO_SUCH_CERTIFICATE)
{
throw CreateWin32Error();
}
return(null);
}
var certData = new byte[certDataLength];
if (!CryptoApi.CryptGetKeyParam(keyHandle, Constants.KP_CERTIFICATE, certData, ref certDataLength, 0))
{
throw CreateWin32Error();
}
return(new X509Certificate2(certData));
}