Cryptography – Communication system using cryptography – Symmetric key cryptography
Reexamination Certificate
2006-07-19
2010-10-05
Moazzami, Nasser (Department: 2436)
Cryptography
Communication system using cryptography
Symmetric key cryptography
C713S170000, C713S168000, C713S176000, C380S037000
Reexamination Certificate
active
07809140
ABSTRACT:
A method of authenticating data transmitted in a digital transmission system, in which the method comprises the steps, prior to transmission, of determining at least two encrypted values for at least some of the data, each encrypted value being determined using a key of a respective encryption algorithm, and outputting said at least two encrypted values with said data.
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Beuque Jean-Bernard Gerard Maurice
Poulain Philippe
Moazzami Nasser
Osha • Liang LLP
Thomson Licensing S.A.
Yalew Fikremariam
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