Simple Authentication and Security Layer (RFC 4422) for Ruby

Goal

Have a reusable library for client implementations that need to do authentication over SASL, mainly targeted at Jabber/XMPP libraries.

All class carry just state, are thread-agnostic and must also work in asynchronous environments.

Usage

Derive from SASL::Preferences and overwrite the methods. Then, create a mechanism instance:

# mechanisms => ['DIGEST-MD5', 'PLAIN']
sasl = SASL.new(mechanisms, my_preferences)
content_to_send = sasl.start
# [...]
content_to_send = sasl.challenge(received_content)