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30990006a9
This reduces chances of errors where consumers of strings mutate inputs and reduces memory usage of the app. Test suite passes now, but there may be some stuff left, so we will run a few sites on a branch prior to merging
44 lines
1000 B
Ruby
44 lines
1000 B
Ruby
# frozen_string_literal: true
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# Note: the pbkdf2 gem is bust on 2.0, the logic is so simple I am not sure it makes sense to have this in a gem atm (Sam)
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#
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# Also PBKDF2 monkey patches string ... don't like that at all
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#
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# Happy to move back to PBKDF2 ruby gem provided:
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#
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# 1. It works on Ruby 2.0
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# 2. It works on 1.9.3
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# 3. It does not monkey patch string
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require 'openssl'
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require 'xor'
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class Pbkdf2
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def self.hash_password(password, salt, iterations, algorithm = "sha256")
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h = OpenSSL::Digest.new(algorithm)
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u = ret = prf(h, password, salt + [1].pack("N"))
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2.upto(iterations) do
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u = prf(h, password, u)
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ret.xor!(u)
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end
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ret.bytes.map { |b| ("0" + b.to_s(16))[-2..-1] }.join("")
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end
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protected
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# fallback xor in case we need it for jruby ... way slower
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def self.xor(x, y)
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x.bytes.zip(y.bytes).map { |a, b| a ^ b }.pack('c*')
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end
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def self.prf(hash_function, password, data)
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OpenSSL::HMAC.digest(hash_function, password, data)
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end
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end
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