Apparatus and method for cipher stealing when encrypting MPEG tr

Cryptography – Communication system using cryptography – Time segment interchange

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380 42, 380 49, H04L 918

Patent

active

056848765

ABSTRACT:
A method of encrypting clear payload data to form encrypted payload data uses a block cipher, the block cipher being characterized by a predetermined block length. The method includes a step of parsing and first and second steps of encrypting. The step of parsing parses the clear payload data into at least one full clear block and a residual block, the at least one full clear block including a last full clear block. Each full clear block is characterized by the predetermined block length. The residual block is characterized by a residual block length, the residual block length being less than the predetermined block length. The step of parsing further parses the last full clear block into a first part and a second part, the second part being characterized by a length equaling a difference between the predetermined block length and the residual block length. The first step of encrypting encrypts a combination of the second part and the residual block to form a first encrypted block, the first encrypted block having a third part and a fourth part. The third part is characterized by a length equaling the second part length. The second step of encrypting encrypts a combination of the first part and the third part to form a second encrypted block, and it is the combination of the second encrypted block and the fourth part that forms the encrypted payload data.

REFERENCES:
patent: 3798360 (1974-03-01), Feistel
patent: 3956615 (1976-05-01), Anderson et al.
patent: 4078152 (1978-03-01), Tuckerman, III
patent: 4229818 (1980-10-01), Matyas et al.
patent: 4679081 (1987-07-01), Tsugane et al.
patent: 4710957 (1987-12-01), Bocci et al.
patent: 4924515 (1990-05-01), Matyas et al.
patent: 5103478 (1992-04-01), Matyas et al.
patent: 5161193 (1992-11-01), Lampson et al.
patent: 5235644 (1993-08-01), Gupta et al.
patent: 5268908 (1993-12-01), Glover et al.
patent: 5412729 (1995-05-01), Liu
Carl H. Meyer et al. "Cryptography: A New Dimension In Computer Data Security", John Wiley & Sons 1982, pp. 74-85.

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