erlang-bcrypt is a wrapper around the OpenBSD Blowfish password hashing algorithm, as described in "A Future-Adaptable Password Scheme" by Niels Provos and David Mazieres.

1. Build it:

   make
   

2. Run it:

   erl -pa ebin
   

1. Start the sasl and crypto applications:

   1> ok = application:start(sasl).
   ok
   2> ok = application:start(crypto).
   ok
   

2. Hash a password using a salt with the default number of rounds:

   4> Hash = bcrypt:hashpw("foo", bcrypt:gen_salt()).
   "$2...000"
   

3. Verify the password:

   5> Hash =:= bcrypt:hashpw("foo", Hash).
   true
   6> Hash =:= bcrypt:hashpw("bar", Hash).
   false
   

Authors: Hunter Morris (http://skarab.com/)