public static byte[] MD5(Span <byte> input)
{
var output = new byte[16];
MD5Utils.Default(input, output);
return(output);
}
public static byte[] MD5(byte[] b)
{
var hash = new byte[CryptoBase.MD5Length];
MD5Utils.Default(b, hash);
return(hash);
}
public static byte[] SSKDF(string password, int keylen)
{
const int md5Length = 16;
var pwMaxSize = Encoding.UTF8.GetMaxByteCount(password.Length);
var key = new byte[keylen];
var pwBuffer = ArrayPool <byte> .Shared.Rent(pwMaxSize);
var resultBuffer = ArrayPool <byte> .Shared.Rent(pwMaxSize + md5Length);
try
{
var pwLength = Encoding.UTF8.GetBytes(password, pwBuffer);
var pw = pwBuffer.AsSpan(0, pwLength);
Span <byte> md5Sum = stackalloc byte[md5Length];
var result = resultBuffer.AsSpan(0, pwLength + md5Length);
var i = 0;
while (i < keylen)
{
if (i == 0)
{
MD5Utils.Default(pw, md5Sum);
}
else
{
md5Sum.CopyTo(result);
pw.CopyTo(result.Slice(md5Length));
MD5Utils.Default(result, md5Sum);
}
var length = Math.Min(16, keylen - i);
md5Sum.Slice(0, length).CopyTo(key.AsSpan(i, length));
i += md5Length;
}
return(key);
}
finally
{
ArrayPool <byte> .Shared.Return(pwBuffer);
ArrayPool <byte> .Shared.Return(resultBuffer);
}
}
public void Default()
{
Span <byte> hash = stackalloc byte[HashConstants.Md5Length];
MD5Utils.Default(_randombytes.Span, hash);
}