class HMAC::SHA256 - ruby-openid-2.9.2 Documentation

Source

# File lib/hmac/hmac.rb, line 88
def Base.digest(key, text)
  begin
    hmac = self.new(key)
    hmac.update(text)
    hmac.digest
  ensure
    hmac.reset_key
  end
end

These two class methods below are safer than using above instance methods combinatorially because an instance will have held a key even if it’s no longer in use.

hexdigest (key, text)

Source

# File lib/hmac/hmac.rb, line 98
def Base.hexdigest(key, text)
  begin
    hmac = self.new(key)
    hmac.update(text)
    hmac.hexdigest
  ensure
    hmac.reset_key
  end
end

new (key = nil)

Source

# File lib/hmac/sha2.rb, line 6
def initialize(key = nil)
  super(Digest::SHA256, 64, 32, key)
end

Calls superclass method HMAC::Base::new

new (algorithm, block_size, output_length, key)

Source

# File lib/hmac/hmac.rb, line 16
def initialize(algorithm, block_size, output_length, key)
  @algorithm = algorithm
  @block_size = block_size
  @output_length = output_length
  @status = STATUS_UNDEFINED
  @key_xor_ipad = ''
  @key_xor_opad = ''
  set_key(key) unless key.nil?
end