Method and device of increasing the execution speed of cipher fe

Details Method and device of increasing the execution speed of cipher fe Method and device of increasing the execution speed of cipher fe

1985-12-30

1988-03-15

Cangialosi, Salvatore

Cryptography

Particular algorithmic function encoding

Nbs/des algorithm

380 28, 380 59, H04L 900

Patent

active

047318430

ABSTRACT:
In an encryption system comprising DES in a cipher feedback mode of k bits, a plain text bit stream is fed into n individual DES encryptors. The DES encryptor operates in parallel from a common input register containing cipher text bit streams so that the overall throughput of the system is increased approximately by a factor of n. If k=1 then the system is self-synchronizing.

REFERENCES:
patent: 4074066 (1978-02-01), Ehrsam et al.
patent: 4078152 (1978-03-01), Tuckermann, III
patent: 4159468 (1979-06-01), Barnes et al.
patent: 4211891 (1980-07-01), Glitz
patent: 4274085 (1981-06-01), Marino, Jr.
patent: 4322577 (1982-03-01), Brandstrom
patent: 4447672 (1984-05-01), Nakamura
patent: 4520232 (1985-05-01), Wilson
"Computer Encryption and the National Security Agency Connection", Science, vol. 197, pp. 438-440.
FIPS PUB #81 "DES Modes of Operation" 12/2/80.
"Security for Computer Networks" by Davies et al., copyright 1984.

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