Encryption apparatus using data encryption standard algorithm

Details Encryption apparatus using data encryption standard algorithm Encryption apparatus using data encryption standard algorithm

2006-08-29

2006-08-29

Morse, Gregory (Department: 2134)

Cryptography

Particular algorithmic function encoding

Nbs/des algorithm

Reexamination Certificate

active

07099470

ABSTRACT:
An encryption apparatus using a DES encryption algorithm is disclosed. The apparatus for encrypting 64-bit plain text blocks includes: input buffering unit for receiving a plain text block byte-by-byte and outputting a first and a second 32-bit plain text blocks in response to a first clock; encryption unit for performing time multiplexed encryption of the first and the second 32-bit plain text blocks in response to the first clock and a second clock, thereby generating a first and a second 32-bit cipher text blocks; and output buffering unit for receiving the first and the second 32-bit cipher text blocks in response to the second clock and outputting eight 8-bit cipher text blocks.

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patent: WO 01/17152 (2001-03-01), None
Lim, “Efficient 8-Cycle DES Implementation,” © 2000 IEEE, 0-7803-6470-8, pp. 175-178.

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