Method: HMAC::Base#set_key

Defined in:
lib/hmac.rb

#set_key(key) ⇒ Object 



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# File 'lib/hmac.rb', line 35

def set_key(key)
  # If key is longer than the block size, apply hash function
  # to key and use the result as a real key.
  key = @algorithm.digest(key) if key.size > @block_size
  key_xor_ipad = "\x36" * @block_size
  key_xor_opad = "\x5C" * @block_size
  for i in 0 .. key.size - 1
	key_xor_ipad[i] ^= key[i]
	key_xor_opad[i] ^= key[i]
  end
  @key_xor_ipad = key_xor_ipad
  @key_xor_opad = key_xor_opad
  @md = @algorithm.new
  @status = STATUS_INITIALIZED
end