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Clarify CMAC API

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Added additional text to cmac.h to make the API clearer.
This commit is contained in:
Simon Butcher 2016-12-14 15:27:22 +00:00
parent 1808dc01bd
commit f4957a8855
1 changed files with 7 additions and 3 deletions
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10
include/mbedtls/cmac.h
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@ -58,9 +58,13 @@ struct mbedtls_cmac_context_t
/** /**
* \brief Set the CMAC key and prepare to authenticate the input * \brief Set the CMAC key and prepare to authenticate the input
* data. * data.
* Should be called with an initialised cipher context. * Should be called with an initialized cipher context.
* *
* \param ctx Cipher context * \param ctx Cipher context. This should be a cipher context,
* initialized to be one of the following types:
* MBEDTLS_CIPHER_AES_128_ECB, MBEDTLS_CIPHER_AES_192_ECB,
* MBEDTLS_CIPHER_AES_256_ECB or
* MBEDTLS_CIPHER_DES_EDE3_ECB.
* \param key CMAC key * \param key CMAC key
* \param keybits length of the CMAC key in bits * \param keybits length of the CMAC key in bits
* (must be acceptable by the cipher) * (must be acceptable by the cipher)
@ -115,7 +119,7 @@ int mbedtls_cipher_cmac_finish( mbedtls_cipher_context_t *ctx,
int mbedtls_cipher_cmac_reset( mbedtls_cipher_context_t *ctx ); int mbedtls_cipher_cmac_reset( mbedtls_cipher_context_t *ctx );
/** /**
* \brief Output = Generic_CMAC( hmac key, input buffer ) * \brief Output = Generic_CMAC( cmac key, input buffer )
* *
* \param cipher_info message digest info * \param cipher_info message digest info
* \param key CMAC key * \param key CMAC key