Microprocessor using asynchronous public key decryption...

Details Microprocessor using asynchronous public key decryption... Microprocessor using asynchronous public key decryption...

2006-11-14

2006-11-14

Sheikh, Ayaz (Department: 2131)

Cryptography

Key management

C713S189000, C713S190000, C713S191000, C713S192000, C713S193000, C726S018000, C726S019000

Reexamination Certificate

active

07136488

ABSTRACT:
In a microprocessor that internally has a microprocessor specific secret key, a key management unit is provided to carry out a key registration for reading out from an external memory a distribution key that is obtained in advance by encrypting the instruction key by using a public key corresponding to the secret key, decrypting the distribution key by using the secret key to obtain the instruction key, and registering the instruction key in correspondence to a specific program identifier for identifying the program into a key table, and to notify a completion of the key registration to the processor core asynchronously by interruption when the key registration is completed.

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