Patent attributes
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 Ri are 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 Ri equal 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, . . . , Rn as the cryptographically wrapped information and stop. Otherwise, return to the step where t is set.
