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ST33TPHF20SPI датащи(PDF) 40 Page - STMicroelectronics |
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ST33TPHF20SPI датащи(HTML) 40 Page - STMicroelectronics |
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40 / 47 page ![]() FIPS140-2 SECURITY POLICY Page 40 of 47 NON-PROPRIETARY DOCUMENT TDES key generation TDES key generation process consists in generating a pseudo-random value from KDFa and checking that this value passes the following conditional tests to be considered and next used as a functional TDES key. Conditional tests are: 1. Check that the 3 TDES cryptographic keys are different: Key1 != Key2, Key2 != Key3, Key1 != Key3 (Keying option 1 from §3.2 of [SP800-67]) 2. Key is not one of the weak key listed in §3.4.2 of [SP800-67] In case of failure, new pseudo-random values are generated until a valid TDES key is found. 4.4 Verification Successful completion of self-tests can be verified through use of TPM2_GetTestResult command. The first 4 bytes of response indicate self-tests status. If they are equal to 0, self- tests completed successfully. If not, the subsequent 4 bytes indicate the list of algorithms not fully self-tested. |
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