Key recovery mechanism for cryptographic systems

Details Key recovery mechanism for cryptographic systems Key recovery mechanism for cryptographic systems

H - Electricity

04

L

H04L 9/06 (2006.01)

Patent

CA 2751623

A cryptographic system can include a register containing a key and a processor coupled to the register. The processor can be operable for performing a first encrypting operation, where the encrypting operation includes computing a key schedule using the register as a workspace. At the end of the first encrypting operation, the key is recovered from the register for use in a second encrypting operation.

L'invention porte sur un système cryptographique pouvant comprendre un registre contenant une clé et un processeur couplé au registre. On peut actionner le processeur pour exécuter une première opération de cryptage, l'opération de cryptage comprenant le calcul d'un programme de clé à l'aide du registre en tant qu'espace de travail. A la fin de la première opération de cryptage, on récupère la clé à partir du registre pour une utilisation dans une seconde opération de cryptage.

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