Patent ID: 8996871
Filing Date: 2015-03-31
Classification: H04L

Abstract:
1. A method of generating ciphertext message data and message authentication codes utilizing shared authenticated encryption unit hardware, said method comprising: receiving plaintext message data at an authenticated encryption unit, wherein said authenticated encryption unit comprises a first authenticated encryption hardware module and a second authenticated encryption hardware module; generating a first message authentication code based on data generated by the second authenticated encryption module, the first message authentication code associated with a first authenticated encryption mode of operation utilizing said plaintext message data and said first authenticated encryption hardware module; and generating ciphertext message data and a second message authentication code based on data generated by the second authenticated encryption module, the second message authentication code associated with a second authenticated encryption mode of operation utilizing said plaintext message data and said second authenticated encryption hardware module, wherein generating said first message authentication code and generating said ciphertext and said second message authentication code are performed substantially simultaneously, the first message authentication code different from the second message authentication code.