In a data processing device (DTD), a first key (K1) is produced based on a secret key (K) so that the latter is never used in clear. In a preliminary step, the secret key (K) and a random number (R1) are applied (I2) to a function (F1) producing the first key (K1). The first key and the random number...http://www.google.fr/patents/US20030179884?utm_source=gb-gplus-shareBrevet US20030179884 - Data processing with a key
Numéro de demande: 10/311,693 Numéro de publication: US 2003/0179884 A1 Date de dépôt: 19 déc. 2002 Brevet délivré: US7529369 ( Date de délivrance 5 mai 2009)
