bcrypt wrapper for Lua
Switch branches/tags
Nothing to show
Clone or download
Fetching latest commit…
Cannot retrieve the latest commit at this time.
Permalink
Type Name Latest commit message Commit time
Failed to load latest commit information.
Makefile
README.md
bcrypt.lua
config.mk
lbcrypt.c
lualib.mk
test.lua

README.md

Simple bcrypt wrapper for Lua.

Please note that this depends on bcrypt, which AFAIK is only included in the base system on OpenBSD. I have not yet successfully built it on Linux, but will add a Makefile if I get it to build on Debian. (At a glance, Debian does not appear to have a package for a crypt library with bcrypt.)

Basic usage:

require "bcrypt"
-- Defaults to a cost of 8, higher will take (much, much...) longer.
local salt = bcrypt.gensalt(8)
local hash = bcrypt.bcrypt("my password", salt)

-- Print the contents. You can just save hash.raw; bcrypt.equal
-- can take the raw string or the derived table.
for k,v in pairs(hash) do print("--> ", k,v) end
--> raw	$2a$07$8BzFlUuprZN4FSBpDx3ZAuPWOu4CZ3uv8Awa4EjAZhNmnIY59nh2e
--> salt	8BzFlUuprZN4FSBpDx3ZAu
--> version	2a
--> cost	7

-- Later, somebady wants to log in, check if the password matches.
if bcrypt.equal("my password", hash) then print "OK" end --> "OK"
if not bcrypt.equal("not my password", hash) then print "REJECTED" end --> "REJECTED"