Rotation of keys during encryption/decryption

Details Rotation of keys during encryption/decryption Rotation of keys during encryption/decryption

2011-05-03

2011-05-03

Hoffman, Brandon S (Department: 2433)

Cryptography

Particular algorithmic function encoding

Public key

C713S150000, C380S200000, C380S277000, C380S255000, C380S260000, C380S261000, C380S262000, C725S031000

Reexamination Certificate

active

07936870

ABSTRACT:
Data is encrypted according to a plurality of data keys. During the encryption of the data, the data keys are rotated according to a data key rotation pattern, and the rotation of the data keys includes repetitive use of the data keys during the encryption of the data. The encrypted data is transmitted to a receiver. Additionally or alternatively, encrypted data is received from a transmitter. The encrypted data is decrypted according to a plurality of data keys. During the decryption of the encrypted data, the data keys are rotated according to a data key rotation pattern, and the rotating of the data keys includes repetitive use of the data keys during the decryption of the encrypted data.

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