Method and system for generating ciphertext and message authentication codes utilizing shared hardware
First Claim
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.
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Abstract
A method and system for generating ciphertext and message authentication codes utilizing shared hardware are disclosed. According to one embodiment, a method is provided of generating ciphertext message data and message authentication codes utilizing shared authenticated encryption unit hardware. In the described embodiment, plaintext message data is received at an authenticated encryption unit which comprises first and second authenticated encryption hardware modules. Thereafter, a first message authentication code (MAC) associated with a first authenticated encryption mode and a second MAC associated with a second authenticated encryption mode are generated. More specifically, the first MAC is generated utilizing the plaintext message data and first authenticated encryption hardware module and ciphertext message data and the second MAC are generated utilizing the plaintext message data and second authenticated encryption hardware module.
18 Citations
20 Claims
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1. A method of generating ciphertext message data and message authentication codes utilizing shared authenticated encryption unit hardware, said method comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A computer program product for generating ciphertext message data and message authentication codes utilizing shared authenticated encryption unit hardware, the computer program product comprising a non-transitory computer readable storage medium having program instructions embodied therewith, the program instructions readable/executable by a processor to cause the processor to:
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receive, by processor, 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; generate, by processor, a first message authentication code based on the plaintext message data, 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 generate, by processor, ciphertext message data and a second message authentication code based on the plaintext message data, 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. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. An apparatus for generating ciphertext message data and message authentication codes comprising:
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a first input to receive plaintext message data; a first authenticated encryption hardware module to generate 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 a second authenticated encryption hardware module to generate 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, wherein said first message authentication code and said ciphertext and said second message authentication code are generated substantially simultaneously, the first message authentication code different from the second message authentication code. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification