Pbkdf2 1.2.0

Pbkdf2

The same as .NET implementation, but with much more extensibility, such as other hashes and the ability to replace any algorithm part (at your own risk). Available as a package.

How to use it

Simple way

var saltBytes = new byte [] {1, 2, 3, 4, 5}; // use much more than this!
var hash = Pbkdf2.HashData("HMACSHA512", "my password", saltBytes, 
           100000 /* iterations */, 32 /* hash size in bytes */);

Full way

var saltBytes = new byte [] {1, 2, 3, 4, 5}; // use much more than this!
using var pbkdf2 = new HmacPbkdf2DeriveBytes("HMACSHA512", "my password", saltBytes, 
           100000 /* iterations */);
var hash = pbkdf2.GetBytes(32 /* hash size in bytes */);

Derive

All methods can be overriden so any part of hash can be replaced. The idea is to avoid being brute forced by an ASIC, for example by simply adding a user block manipulation at PseudoRandomFunction or ComputeBlockIteration.

Currently there are three classes:

• Pbkdf2DeriveBytes is the abstract class which requires only to add a pseudo-random function
• HmacPbkdf2DeriveBytes is an implementation of Pbkdf2DeriveBytes, specific to use HMACs.
• ParallelHmacPbkdf2DeriveBytes is an implementation of Pbkdf2DeriveBytes, specific to use HMACs and work in parallel (using PLINQ).

References

• RFC 2898: the reference
• .NET implementation documentation: our implementation works the same
• Wikipedia: a human-readable description