public Gost3411Hmac()
{
HashName = DefaultHashName;
HashSizeValue = DefaultHashSize;
_keyAlgorithm = new Gost28147SymmetricAlgorithm();
_hashHandle = CryptoApiHelper.CreateHashHmac(CryptoApiHelper.ProviderHandle, _keyAlgorithm.InternalKeyHandle);
}
public Gost3411Hmac(Gost28147SymmetricAlgorithmBase keyAlgorithm)
{
if (keyAlgorithm == null)
{
throw ExceptionUtility.ArgumentNull("keyAlgorithm");
}
HashName = DefaultHashName;
HashSizeValue = DefaultHashSize;
_keyAlgorithm = DuplicateKeyAlg(keyAlgorithm);
_hashHandle = CryptoApiHelper.CreateHashHmac(CryptoApiHelper.ProviderHandle, _keyAlgorithm.InternalKeyHandle);
}
public Gost3411Hmac(byte[] key)
{
if (key == null)
{
throw ExceptionUtility.ArgumentNull("key");
}
HashName = DefaultHashName;
HashSizeValue = DefaultHashSize;
_keyAlgorithm = new Gost28147SymmetricAlgorithm { Key = key };
_hashHandle = CryptoApiHelper.CreateHashHmac(CryptoApiHelper.ProviderHandle, _keyAlgorithm.InternalKeyHandle);
}
public Gost3411Prf(Gost28147SymmetricAlgorithmBase key, byte[] label, byte[] seed)
: this(label, seed)
{
if (key == null)
{
throw ExceptionUtility.ArgumentNull("key");
}
_hashHmacHandle = SafeHashHandleImpl.InvalidHandle;
_buffer = new byte[_labelAndSeed.Length + 32];
var gostSymmetricAlgorithm = key as Gost28147SymmetricAlgorithm;
_key = (gostSymmetricAlgorithm != null)
? new Gost28147SymmetricAlgorithm(gostSymmetricAlgorithm.InternalProvHandle, gostSymmetricAlgorithm.InternalKeyHandle)
: new Gost28147SymmetricAlgorithm { Key = key.Key };
}
private void InitializeHmac()
{
var hashHmacHandle = CryptoApiHelper.CreateHashHmac(CryptoApiHelper.ProviderHandle, _key.InternalKeyHandle);
_hashHmacHandle.TryDispose();
_hashHmacHandle = hashHmacHandle;
}
public override void Initialize()
{
var hashHmacHandle = CryptoApiHelper.CreateHashHmac(CryptoApiHelper.ProviderHandle, _keyAlgorithm.InternalKeyHandle);
_hashHandle.TryDispose();
_hashHandle = hashHmacHandle;
}
public static extern bool CryptGetHashParam([In] SafeHashHandleImpl hHash, [In] uint dwParam, [In][Out] byte[] pbData, ref uint pdwDataLen, [In] uint dwFlags);
public override void Initialize()
{
_hashHandle.TryDispose();
_hashHandle = null;
}
public static extern bool CryptVerifySignature([In] SafeHashHandleImpl hHash, [In][Out] byte[] pbSignature, uint pdwSigLen, [In] SafeKeyHandleImpl hPubKey, [MarshalAs(UnmanagedType.LPStr)] StringBuilder sDescription, [In] uint dwFlags);
public static extern bool CryptSignHash([In] SafeHashHandleImpl hHash, [In] uint dwKeySpec, [MarshalAs(UnmanagedType.LPStr)] StringBuilder sDescription, [In] uint dwFlags, [In][Out] byte[] pbSignature, ref uint pdwSigLen);
public static extern bool CryptDeriveKey([In] SafeProvHandleImpl hProv, [In] uint Algid, [In] SafeHashHandleImpl hBaseData, [In] uint dwFlags, [In][Out] ref SafeKeyHandleImpl phKey);
public static SafeKeyHandleImpl DeriveSymKey(SafeProvHandleImpl providerHandle, SafeHashHandleImpl hashHandle)
{
var symKeyHandle = SafeKeyHandleImpl.InvalidHandle;
if (!CryptoApi.CryptDeriveKey(providerHandle, Constants.CALG_G28147, hashHandle, Constants.CRYPT_EXPORTABLE, ref symKeyHandle))
{
throw CreateWin32Error();
}
return(symKeyHandle);
}
public override void Initialize()
{
_hashHandle.TryDispose();
_hashHandle = CryptoApiHelper.CreateHash(CryptoApiHelper.ProviderHandle);
}
public Gost3411HashAlgorithm()
{
_hashHandle = CryptoApiHelper.CreateHash(CryptoApiHelper.ProviderHandle);
}
private void InitHash()
{
var hProv = CryptoApiHelper.ProviderHandle;
var hHash = CryptoApiHelper.CreateHashImit(hProv, _keyAlgorithm.InternalKeyHandle);
_hashHandle = hHash;
}
public static extern bool CryptCreateHash([In] SafeProvHandleImpl hProv, [In] uint Algid, [In] SafeKeyHandleImpl hKey, [In] uint dwFlags, [In][Out] ref SafeHashHandleImpl phHash);
public Gost3411Prf(byte[] key, byte[] label, byte[] seed)
: this(label, seed)
{
if (key == null)
{
throw ExceptionUtility.ArgumentNull("key");
}
if (key.Length != 32)
{
throw ExceptionUtility.Argument("key", Resources.InvalidHashSize);
}
_hashHmacHandle = SafeHashHandleImpl.InvalidHandle;
_buffer = new byte[_labelAndSeed.Length + 32];
using (var keyHandle = CryptoApiHelper.ImportBulkSessionKey(CryptoApiHelper.ProviderHandle, key, CryptoApiHelper.RandomNumberGenerator))
{
_key = new Gost28147SymmetricAlgorithm(CryptoApiHelper.ProviderHandle, keyHandle);
}
}
public static bool VerifySign(SafeProvHandleImpl providerHandle, SafeHashHandleImpl hashHandle, SafeKeyHandleImpl keyHandle, byte[] hashValue, byte[] signatureValue)
{
SetHashValue(hashHandle, hashValue);
return(CryptoApi.CryptVerifySignature(hashHandle, signatureValue, (uint)signatureValue.Length, keyHandle, null, 0));
}
