Module: Braintree::Digest

Defined in:
lib/braintree/digest.rb

Overview

:nodoc:

Class Method Summary collapse

Class Method Details

._hmac_sha1(key, message) ⇒ Object


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# File 'lib/braintree/digest.rb', line 21

def self._hmac_sha1(key, message)
  key_digest = ::Digest::SHA1.digest(key)
  sha1 = OpenSSL::Digest.new("sha1")
  OpenSSL::HMAC.hexdigest(sha1, key_digest, message.to_s)
end

.hexdigest(private_key, string) ⇒ Object


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# File 'lib/braintree/digest.rb', line 3

def self.hexdigest(private_key, string)
  _hmac_sha1(private_key, string)
end

.secure_compare(left, right) ⇒ Object


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# File 'lib/braintree/digest.rb', line 7

def self.secure_compare(left, right)
  return false unless left && right

  left_bytes = left.unpack("C*")
  right_bytes = right.unpack("C*")
  return false if left_bytes.size != right_bytes.size

  result = 0
  left_bytes.zip(right_bytes).each do |left_byte, right_byte|
    result |= left_byte ^ right_byte
  end
  result == 0
end