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psa_util: update documentation for PSA conversion functions

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Signed-off-by: Valerio Setti <valerio.setti@nordicsemi.no>
This commit is contained in:
Valerio Setti 2024-01-09 09:10:44 +01:00
parent 3afdd02e37
commit d0aa9c1316
1 changed files with 8 additions and 23 deletions
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31
include/mbedtls/psa_util.h
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@ -114,14 +114,11 @@ extern mbedtls_psa_drbg_context_t *const mbedtls_psa_random_state;
* (`MBEDTLS_ECP_DP_xxx`).
* \param[out] bits On success the bit size of the curve; 0 on failure.
*
* \return On success the corresponding PSA elliptic curve identifier
* (`PSA_ECC_FAMILY_xxx`).
* \return \c 0 if \p grpid is not supported.
*
* \note A successful conversion means that the curve is supported
* in PSA. Legacy support (`mbedtls_ecp_xxx`) is only
* enabled if the curve is builtin (see
* `config_adjust_legacy_from_psa.h` for details).
* \return If the curve is supported in the PSA API, this function
* returns the proper PSA curve identifier
* (`PSA_ECC_FAMILY_xxx`). This holds even if the curve is
* not supported by the ECP module.
* \return \c 0 if the curve is not supported in the PSA API.
*/
psa_ecc_family_t mbedtls_ecc_group_to_psa(mbedtls_ecp_group_id grpid,
size_t *bits);
@ -132,23 +129,11 @@ psa_ecc_family_t mbedtls_ecc_group_to_psa(mbedtls_ecp_group_id grpid,
* (`PSA_ECC_FAMILY_xxx`).
* \param bits The bit-length of a private key on \p curve.
*
* \return On success the corresponding Mbed TLS elliptic curve
* \return If the curve is supported in the PSA API, this function
* returns the corresponding Mbed TLS elliptic curve
* identifier (`MBEDTLS_ECP_DP_xxx`).
* \return #MBEDTLS_ECP_DP_NONE if the combination of \c curve
* and \p bits is not supported or invalid:
* - not supported means that the proper `PSA_WANT_ECC_xxx`
* symbol is not enabled for the requested curve.
* - invalid if `PSA_WANT_ECC_xxx` is enabled, but the
* combination of \p curve and \p bits are not correct
* for that curve.
* \return #MBEDTLS_ECP_DP_NONE for secp224k1 curve, no matter
* what the status of `PSA_WANT_ECC_SECP_K1_224` is, because
* this curve is not and will not be supported in PSA (#3541).
*
* \note A successful conversion means that the curve is supported
* in PSA. Legacy support (`mbedtls_ecp_xxx`) is only
* enabled if the curve is builtin (see
* `config_adjust_legacy_from_psa.h` for details).
* and \p bits is not supported.
*/
mbedtls_ecp_group_id mbedtls_ecc_group_from_psa(psa_ecc_family_t curve,
size_t bits);