} // end cctr
internal PBKDF2_HMACNotBuildInAdapter(IHash a_underlyingHash, byte[] a_password,
byte[] a_salt, UInt32 a_iterations)
{
if (a_password == null)
{
throw new ArgumentNullHashLibException(EmptyPassword);
}
if (a_salt == null)
{
throw new ArgumentNullHashLibException(EmptySalt);
}
if (a_iterations <= 0)
{
throw new ArgumentOutOfRangeHashLibException(IterationTooSmall);
}
var hash = a_underlyingHash?.Clone() ?? throw new ArgumentNullHashLibException(UninitializedInstance);
hmacNotBuiltIn = HMACNotBuildInAdapter.CreateHMAC(hash, a_password);
BlockSize = hmacNotBuiltIn.HashSize;
buffer = new byte[BlockSize];
// Copy Password
Password = a_password.DeepCopy();
// Copy Salt
Salt = a_salt.DeepCopy();
IterationCount = a_iterations;
Initialize();
} // end constructor
internal PBKDF2HMACNotBuiltIn(IHash underlyingHash, byte[] password,
byte[] salt, uint iterations)
{
if (password == null)
{
throw new ArgumentNullException(nameof(password));
}
if (salt == null)
{
throw new ArgumentNullException(nameof(salt));
}
if (iterations <= 0)
{
throw new ArgumentException(IterationTooSmall);
}
_password = ArrayUtils.Clone(password);
_salt = ArrayUtils.Clone(salt);
var hash = underlyingHash?.Clone() ?? throw new ArgumentNullException(nameof(underlyingHash));
_hmacNotBuiltIn = HMACNotBuiltIn.CreateHMAC(hash, _password);
_iterations = iterations;
_blockSize = _hmacNotBuiltIn.HashSize;
_buffer = new byte[_blockSize];
Initialize();
}
internal HMACNotBuiltInToHMACAdapter(IHMACNotBuiltIn hmacNotBuiltIn)
{
_hmacNotBuiltIn = hmacNotBuiltIn != null
? (IHMACNotBuiltIn)hmacNotBuiltIn.Clone()
: throw new ArgumentNullException(nameof(hmacNotBuiltIn));
BlockSizeValue = hmacNotBuiltIn.BlockSize;
HashSizeValue = hmacNotBuiltIn.HashSize * 8;
Initialize();
}
CreateHMACFromHMACNotBuiltIn(IHMACNotBuiltIn hmacNotBuiltIn) => new HMACNotBuiltInToHMACAdapter(hmacNotBuiltIn);
