Device for and method of cryptographically wrapping information

Details Device for and method of cryptographically wrapping information Device for and method of cryptographically wrapping information

2006-08-15

2006-08-15

Moise, Emmanuel L. (Department: 2137)

Cryptography

Particular algorithmic function encoding

C380S022000, C380S042000, C713S189000, C713S180000

Reexamination Certificate

active

07092524

ABSTRACT:
A device for and method of cryptographically wrapping information by first constructing information to be wrapped into an even multiple of y bits. Information to be wrapped is parsed into equal blocks P1, P2, . . . , Pn. Next, registers Riare loaded with the blocks Pi. Next, an initialization vector IV is stored into a register A. Set j=0. Set i=1. Set t=(n×j)+i. Concatenate A and Ri. Encrypt the result of the last step to form 2y encrypted bits. Divide the encrypted bits into a first set of y bits and a second set of y bits. Set Riequal to the first set. Combine the second set with t using a user-definable function. Set A equal to the combination. If i=n then increment j and reset i=1; otherwise, increment i. If j is equal to a user-definable number then return A, R1, R2, . . . , Rnas the cryptographically wrapped information and stop. Otherwise, return to the step where t is set.

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