zjdyzww / PBKDF2-CSharp-DeriveBytes-custom-A

Flexible PBKDF2 implementation for .NET Framework by Jither - https://github.com/Jither/PBKDF2

Jither.PBKDF2

Flexible PBKDF2 implementation for the .NET Framework.

Currently targetting .NET Framework 4.5.1.

The PBKDF2 implementation included with .NET 2.0 and newer - Rfc2898DeriveBytes - is hardcoded to use HMAC-SHA1 as the underlying pseudo random function (PRF).

Jither.PBKDF2 consists of:

• PBKDF2DeriveBytes - which allows a custom PRF through a simple IPseudoRandomFunction interface.
• A few example implementations of IPseudoRandomFunction using other .NET HMAC implementations (HMAC-SHA256, HMAC-SHA512 etc.)
• A small suite of tests, mainly checking output against published test vectors.
• A quickly hacked together test tool (AwpTest) for anti-weakpasswords

Since PBKDF2DeriveBytes subclasses DeriveBytes (like Rfc2898DeriveBytes) usage is similar:

using (var prf = new HMACSHA512PseudoRandomFunction(input))
{
    using (var hash = new PBKDF2DeriveBytes(prf, salt, 1000))
    {
        var result = hash.GetBytes(32);
    }
}

Note:

Although the code in this repository is extracted from production code, it is mainly intended for educational purposes and something to build upon - not as a full-fledged library.