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# -*- ruby encoding: utf-8 -*-
require 'digest/sha1'
require 'digest/sha2'
require 'digest/md5'
require 'base64'
require 'securerandom'
class Net::LDAP::Password
class << self
# Generate a password-hash suitable for inclusion in an LDAP attribute.
# Pass a hash type as a symbol (:md5, :sha, :ssha) and a plaintext
# password. This function will return a hashed representation.
#
#--
# STUB: This is here to fulfill the requirements of an RFC, which
# one?
#
# TODO:
# * maybe salted-md5
# * Should we provide sha1 as a synonym for sha1? I vote no because then
# should you also provide ssha1 for symmetry?
#
def generate(type, str)
case type
when :md5
'{MD5}' + Base64.strict_encode64(Digest::MD5.digest(str))
when :sha
'{SHA}' + Base64.strict_encode64(Digest::SHA1.digest(str))
when :ssha
salt = SecureRandom.random_bytes(16)
'{SSHA}' + Base64.strict_encode64(Digest::SHA1.digest(str + salt) + salt)
when :ssha256
salt = SecureRandom.random_bytes(16)
'{SSHA256}' + Base64.strict_encode64(Digest::SHA256.digest(str + salt) + salt)
else
raise Net::LDAP::HashTypeUnsupportedError, "Unsupported password-hash type (#{type})"
end
end
end
end
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