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Add documentation for change in CMAC self-test behaviour

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Signed-off-by: Steven Cooreman <steven.cooreman@silabs.com>
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Steven Cooreman
2021-04-23 08:19:43 +02:00
parent d367990ef3
commit 894b9c4635
2 changed files with 10 additions and 0 deletions
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7
include/mbedtls/cmac.h
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@ -198,6 +198,13 @@ int mbedtls_aes_cmac_prf_128( const unsigned char *key, size_t key_len,
/**
* \brief The CMAC checkup routine.
*
* \note In case the CMAC routines are provided by an alternative
* implementation (i.e. #MBEDTLS_CMAC_ALT is defined), the
* checkup routine will succeed even if the implementation does
* not support the less widely used AES-192 or 3DES primitives.
* The self-test requires at least AES-128 and AES-256 to be
* supported by the underlying implementation.
*
* \return \c 0 on success.
* \return \c 1 on failure.
*/