# frozen_string_literal: true

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=begin

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= Info

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'OpenSSL for Ruby 2' project

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Copyright (C) 2002 Michal Rokos <m.rokos@sh.cvut.cz>

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All rights reserved.

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= Licence

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This program is licensed under the same licence as Ruby.

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(See the file 'LICENCE'.)

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=end

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require 'openssl.so'

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require_relative 'openssl/bn'

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require_relative 'openssl/pkey'

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require_relative 'openssl/cipher'

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require_relative 'openssl/digest'

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require_relative 'openssl/hmac'

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require_relative 'openssl/x509'

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require_relative 'openssl/ssl'

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require_relative 'openssl/pkcs5'

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require_relative 'openssl/version'

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module OpenSSL

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# call-seq:

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# OpenSSL.secure_compare(string, string) -> boolean

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#

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# Constant time memory comparison. Inputs are hashed using SHA-256 to mask

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# the length of the secret. Returns +true+ if the strings are identical,

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# +false+ otherwise.

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def self.secure_compare(a, b)

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hashed_a = OpenSSL::Digest.digest('SHA256', a)

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hashed_b = OpenSSL::Digest.digest('SHA256', b)

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OpenSSL.fixed_length_secure_compare(hashed_a, hashed_b) && a == b

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end

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end

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