public NerdyRfc2898DeriveBytes(
ReadOnlySpan <byte> password,
ReadOnlySpan <byte> salt,
int iterations,
HashAlgorithmName hashAlgorithm)
{
if (salt.Length < MinimumSaltSize)
{
throw new ArgumentException($"salt minimum length is {MinimumSaltSize}", nameof(salt));
}
if (iterations <= 0)
{
throw new ArgumentOutOfRangeException(nameof(iterations), "iterations must be a positive number");
}
this.salt = new byte[salt.Length + sizeof(uint)];
salt.CopyTo(this.salt);
this.iterations = (uint)iterations;
this.password = new byte[password.Length];
password.CopyTo(this.password);
this.HashAlgorithm = hashAlgorithm;
this.hmac = this.OpenHmac();
// this.blockSize is in bytes, HashSize is in bits.
this.blockSize = this.hmac.HashSize >> 3;
this.Initialize();
}
public NerdyRfc2898DeriveBytes(string password, int saltSize, int iterations, HashAlgorithmName hashAlgorithm)
{
switch (saltSize)
{
case < 0:
throw new ArgumentOutOfRangeException(nameof(saltSize), $"saleSize must a positive number");
case < MinimumSaltSize:
throw new ArgumentException($"salt minimum length is {MinimumSaltSize}", nameof(saltSize));
}
if (iterations <= 0)
{
throw new ArgumentOutOfRangeException(nameof(iterations), "iterations must be a positive number");
}
this.salt = new byte[saltSize + sizeof(uint)];
using (var rng = new NerdyRandomNumberGenerator())
{
rng.NextBytes(this.salt);
}
this.iterations = (uint)iterations;
this.password = Encoding.UTF8.GetBytes(password);
this.HashAlgorithm = hashAlgorithm;
this.hmac = this.OpenHmac();
// this.blockSize is in bytes, HashSize is in bits.
this.blockSize = this.hmac.HashSize >> 3;
this.Initialize();
}
public NerdyRfc2898DeriveBytes(string password, byte[] salt, int iterations, HashAlgorithmName hashAlgorithm)
: this(Encoding.UTF8.GetBytes(password), salt, iterations, hashAlgorithm)
{
}
