public static byte[] EncodePublicBlob(Gost_R3410_KeyExchangeParams publicKeyParameters, int keySize, int signatureAlgId)
{
var encodedKeyParams = publicKeyParameters.EncodeParameters();
var encodedKeyBlob = new byte[16 + encodedKeyParams.Length + publicKeyParameters.PublicKey.Length];
encodedKeyBlob[0] = 6;
encodedKeyBlob[1] = 32;
Array.Copy(BitConverter.GetBytes(signatureAlgId), 0, encodedKeyBlob, 4, 4);
Array.Copy(BitConverter.GetBytes(Constants.GR3410_1_MAGIC), 0, encodedKeyBlob, 8, 4);
Array.Copy(BitConverter.GetBytes(keySize), 0, encodedKeyBlob, 12, 4);
Array.Copy(encodedKeyParams, 0, encodedKeyBlob, 16, encodedKeyParams.Length);
Array.Copy(publicKeyParameters.PublicKey, 0, encodedKeyBlob, 16 + encodedKeyParams.Length, publicKeyParameters.PublicKey.Length);
return(encodedKeyBlob);
}
protected Gost_R3410_KeyExchangeAlgorithm(ProviderType providerType, SafeProvHandleImpl provHandle, SafeKeyHandleImpl keyHandle, Gost_R3410_KeyExchangeParams keyExchangeParameters, int keySize, int signatureAlgId) : base(providerType)
{
if (provHandle == null)
{
throw ExceptionUtility.ArgumentNull(nameof(provHandle));
}
if (keyHandle == null)
{
throw ExceptionUtility.ArgumentNull(nameof(keyHandle));
}
if (keyExchangeParameters == null)
{
throw ExceptionUtility.ArgumentNull(nameof(keyExchangeParameters));
}
_provHandle = provHandle.DangerousAddRef();
_keyHandle = keyHandle.DangerousAddRef();
_keyExchangeParameters = keyExchangeParameters;
_keySize = keySize;
_signatureAlgId = signatureAlgId;
}