How do I hash two blocks of data with HashAlgorithm in C#?

Question

I need to hash a password with salt in C#. Salt is obtained from one source and is of type byte[], password is obtained from another source and is of type String.

Computing a hash of one block is quite easy - just call HashAlgorithm.ComputeHash() and it's done, but how do I compute a hash of two blocks without first building their concatenation?

Answer 1

You'll want to look into the TransformBlock and TransformFinalBlock methods.

The latter MSDN link exemplifies use of both with a code sample that is potentially to much to post here.

Answer 2

Use TransformBlock and TransformFinalBlock and then use the Hash property.