require 'digest/sha1' module Salty SALT_LENGTH=30 ALPHA = ('A'..'Z').to_a + ('a'..'z').to_a + ('0'..'9').to_a def Salty.hash_fn(str) sha512 = Digest::SHA2.new(512) sha512.hexdigest(str) end def Salty.generate_salt (1..SALT_LENGTH).map{ALPHA.sample}.join end def Salty.salted_hash(str,salt) res = str 100.times do res = hash_fn(res+salt) end res end def Salty.hash(str) salt = generate_salt res = salted_hash(str,salt) n = str.length res[0...n] + salt + res[n..-1] end def Salty.check(unhashed,hashed) begin n = unhashed.length salt = hashed[n,SALT_LENGTH] myhashed = hashed[0...n] + hashed[n+SALT_LENGTH..-1] return myhashed == salted_hash(unhashed,salt) rescue return false end end end