Created
April 16, 2015 19:09
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#!/usr/bin/env ruby | |
# Ruby implementation of Tor's password hashing OpenPGP S2K algorithm | |
require 'securerandom' | |
require 'digest/sha1' | |
secret = 'some very secret phrase' | |
salt = SecureRandom.random_bytes(8) | |
count = 65536 | |
salted_secret = salt + secret | |
hash = Digest::SHA1.new | |
while count > 0 | |
if count > salted_secret.length | |
hash.update(salted_secret) | |
count = count - salted_secret.length | |
else | |
hash.update(salted_secret[0...-count]) | |
count = 0 | |
end | |
end | |
hashed = hash.digest | |
salt = salt.each_byte.map { |b| b.to_s(16) }.join.upcase | |
indicator = 96.chr.each_byte.map { |b| b.to_s(16) }.join.upcase | |
torhash = hashed.each_byte.map { |b| b.to_s(16) }.join.upcase | |
return '16:' + salt + indicator + torhash |
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