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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Main Authors | , |
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Format | Patent |
Language | German |
Published |
16.11.2006
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Subjects | |
Online Access | Get full text |
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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. |
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Bibliography: | Application Number: DE20006026186T |