Verfahren zur Prüfung einer integrierten Schaltung mit vertraulichen Software- oder Hardware-elementen

This method uses a tester (T) capable of being connected to an integrated circuit (CI) to be tested. A random number (RNG-C) is generated and ciphered using a key (k) by a cipher algorithm to obtain a password (Gk(RNG)-C). The random number (RNG-C) is sent to the tester (T) in which the received ran...

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Bibliographic Details
Main Authors FABRICE, WALTER, HUGUES, BLANGY
Format Patent
LanguageGerman
Published 16.11.2006
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRIC DIGITAL DATA PROCESSING
ELECTRICITY
MEASURING
MEASURING ELECTRIC VARIABLES
MEASURING MAGNETIC VARIABLES
PHYSICS
TESTING
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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Summary:This method uses a tester (T) capable of being connected to an integrated circuit (CI) to be tested. A random number (RNG-C) is generated and ciphered using a key (k) by a cipher algorithm to obtain a password (Gk(RNG)-C). The random number (RNG-C) is sent to the tester (T) in which the received random number (RNG-C) is ciphered using the same key (k) by a same cipher algorithm to generate therein a second password (Gk(RNG)-T). This latter is sent to the integrated circuit (CI) to be compared to the first password (Gk(RNG)-C). The test of the confidential parts ( 1 ) of the circuit is only authorised if the two passwords exhibit the required match.
Bibliography:Application Number: DE20006026186T