parallel_bcrypt

Documentation

Overview

*Run bcrypt password hash in parallel threads and combine the results. Four threads is a good choice. Since most modern computers and

mobile devices have 4 core processors the hash completes in about
the same amount of time as a single bcrypt, however it makes
cracking attempts 4X more costly.

Index

• Constants
• func Hash(nThreads int, plaintextPassword []byte, salt []byte, cost int) ([]byte, error)

Constants

const BcryptSaltLen = 16

Salt must be exactly this number of bytes

const OutputSize = 32

The number of bytes returned by Hash()

Functions

func Hash

func Hash(nThreads int, plaintextPassword []byte, salt []byte, cost int) ([]byte, error)

*Hash given password with N threads (1-32). There is no length limit on the password because it is first hashed with sha256 before it goes into bcrypt. The output hash is always 32 bytes.