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;
}
public Gost_R3410_2001_KeyExchangeAlgorithm(ProviderType providerType, SafeProvHandleImpl provHandle, SafeKeyHandleImpl keyHandle, Gost_R3410_2001_KeyExchangeParams keyExchangeParameters, int keySize, int signatureAlgId)
: base(providerType, provHandle, keyHandle, keyExchangeParameters, keySize, signatureAlgId)
{
}
protected override Gost_R3410_2012_256_KeyExchangeAlgorithm CreateKeyExchangeAlgorithm(ProviderType providerType, SafeProvHandleImpl provHandle, SafeKeyHandleImpl keyHandle, Gost_R3410_2012_256_KeyExchangeParams keyExchangeParameters)
{
return(new Gost_R3410_2012_256_KeyExchangeAlgorithm(providerType, provHandle, keyHandle, keyExchangeParameters, KeySizeValue, SignatureAlgId));
}
protected override SafeHashHandleImpl CreateHashHandle(SafeProvHandleImpl providerHandle)
{
return(CryptoApiHelper.CreateHash_3411_2012_256(providerHandle));
}
internal Gost_R3411_2012_256_HashAlgorithm(ProviderType providerType, SafeProvHandleImpl providerHandle) : base(providerType, providerHandle, DefaultHashSizeValue)
{
}
protected abstract TKeyAlgorithm CreateKeyExchangeAlgorithm(ProviderType providerType, SafeProvHandleImpl provHandle, SafeKeyHandleImpl keyHandle, TKeyParams keyExchangeParameters);
protected abstract SafeHashHandleImpl CreateHashHandle(SafeProvHandleImpl providerHandle);
internal Gost_R3411_HashAlgorithm(ProviderType providerType, SafeProvHandleImpl providerHandle, int hashSize) : base(providerType, hashSize)
{
_hashHandle = CreateHashHandle(providerHandle);
}
private static void GetKeyPairValue(CspParameters providerParams, bool randomKeyContainer, out SafeProvHandleImpl providerHandle, out SafeKeyHandleImpl keyHandle)
{
SafeProvHandleImpl resultProviderHandle = null;
SafeKeyHandleImpl resultKeyHandle = null;
try
{
resultProviderHandle = CreateProviderHandle(providerParams, randomKeyContainer);
if (providerParams.ParentWindowHandle != IntPtr.Zero)
{
CryptoApiHelper.SetProviderParameter(resultProviderHandle, providerParams.KeyNumber, Constants.PP_CLIENT_HWND, providerParams.ParentWindowHandle);
}
else if (providerParams.KeyPassword != null)
{
SetSignatureKeyPassword(resultProviderHandle, providerParams.KeyPassword, providerParams.KeyNumber);
}
try
{
resultKeyHandle = CryptoApiHelper.GetUserKey(resultProviderHandle, providerParams.KeyNumber);
}
catch (Exception exception)
{
var errorCode = Marshal.GetHRForException(exception);
if (errorCode != 0)
{
if (((providerParams.Flags & CspProviderFlags.UseExistingKey) != CspProviderFlags.NoFlags) || (errorCode != Constants.NTE_NO_KEY))
{
throw;
}
resultKeyHandle = CryptoApiHelper.GenerateKey(resultProviderHandle, providerParams.KeyNumber, providerParams.Flags);
}
}
var keyAlgIdInverted = CryptoApiHelper.GetKeyParameter(resultKeyHandle, Constants.KP_ALGID);
var keyAlgId = keyAlgIdInverted[0] | (keyAlgIdInverted[1] << 8) | (keyAlgIdInverted[2] << 16) | (keyAlgIdInverted[3] << 24);
if ((keyAlgId != Constants.CALG_DH_EL_SF) && (keyAlgId != Constants.CALG_GR3410EL))
{
throw ExceptionUtility.NotSupported(Resources.KeyAlgorithmNotSupported);
}
}
catch (Exception)
{
if (resultProviderHandle != null)
{
resultProviderHandle.Close();
}
if (resultKeyHandle != null)
{
resultKeyHandle.Close();
}
throw;
}
providerHandle = resultProviderHandle;
keyHandle = resultKeyHandle;
}
protected abstract SafeHashHandleImpl CreateHashHMAC(ProviderType providerType, SafeProvHandleImpl providerHandle, SafeKeyHandleImpl symKeyHandle);
protected override SafeHashHandleImpl CreateHashHMAC(ProviderType providerType, SafeProvHandleImpl providerHandle, SafeKeyHandleImpl symKeyHandle)
{
return(CryptoApiHelper.CreateHashHMAC_2012_256(providerType, providerHandle, symKeyHandle));
}
