Method and apparatus for integrated ciphering and hashing

Details Method and apparatus for integrated ciphering and hashing Method and apparatus for integrated ciphering and hashing

1997-01-07

2000-02-01

Hayes, Gail O.

Cryptography

Particular algorithmic function encoding

Nbs/des algorithm

380 37, 380 29, H04L 900

Patent

active

060212012

ABSTRACT:
A cryptography unit having a cipher unit and a hash unit coupled in parallel for simultaneous ciphering and hashing. The cipher unit implements a cipher algorithm that operates on a data block having a first predetermined size M. The hash unit implements a hash algorithm on a data block having a second predetermined size N. Buffers of a size Q, where Q is an integer multiple of M and N, are employed to receive the input data into the present invention. A security unit that ensures that the cipher unit and the hash unit operate on the same data block of size Q is also provided.

REFERENCES:
patent: 5473692 (1995-12-01), Davis
patent: 5539828 (1996-07-01), Davis
patent: 5633932 (1997-05-01), Davis et al.
patent: 5757919 (1998-05-01), Herbert et al.
patent: 5796840 (1998-08-01), Davis
patent: 5805712 (1998-09-01), Davis

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