gistfile1.rb

#!/usr/bin/env ruby
require 'digest/sha1'
sums=File.open('SHA1.txt', 'r') {|fp| fp.read.downcase.split("\n")}
while true
    pa = Digest::SHA1.hexdigest(gets().strip).downcase
    puts sums.include?(pa) ? "Password is in dump, not decrypted" \
        : sums.include?(pa.gsub(/^.{5}/,'00000')) ? "Password exists and has been decrypted" \
            : "All good!"
end