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library: Move mbedtls_ecc helper functions to psa_util

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Move the mbedtls_ecc helper functions from psa_core to psa_util.
These files are not implemented as part of the PSA API and should not
be part of the PSA crypto implementation.

Signed-off-by: Joakim Andersson <joakim.andersson@nordicsemi.no>
This commit is contained in:
Joakim Andersson
2023-12-11 21:29:19 +01:00
parent c5b7285da9
commit b349108b99
4 changed files with 224 additions and 222 deletions
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50
include/mbedtls/psa_util.h
View File

@@ -14,6 +14,8 @@
#include "mbedtls/build_info.h"
#include "psa/crypto.h"
#if defined(MBEDTLS_PSA_CRYPTO_C)
/* Expose whatever RNG the PSA subsystem uses to applications using the
@@ -100,5 +102,53 @@ extern mbedtls_psa_drbg_context_t *const mbedtls_psa_random_state;
#endif /* !defined(MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG) */
/** \defgroup psa_tls_helpers TLS helper functions
* @{
*/
#if defined(PSA_WANT_KEY_TYPE_ECC_PUBLIC_KEY)
#include <mbedtls/ecp.h>
/** Convert an ECC curve identifier from the Mbed TLS encoding to PSA.
*
* \note This function is provided solely for the convenience of
* Mbed TLS and may be removed at any time without notice.
*
* \param grpid An Mbed TLS elliptic curve identifier
* (`MBEDTLS_ECP_DP_xxx`).
* \param[out] bits On success, the bit size of the curve.
*
* \return The corresponding PSA elliptic curve identifier
* (`PSA_ECC_FAMILY_xxx`).
* \return \c 0 on failure (\p grpid is not recognized).
*/
psa_ecc_family_t mbedtls_ecc_group_to_psa(mbedtls_ecp_group_id grpid,
size_t *bits);
/** Convert an ECC curve identifier from the PSA encoding to Mbed TLS.
*
* \note This function is provided solely for the convenience of
* Mbed TLS and may be removed at any time without notice.
*
* \param curve A PSA elliptic curve identifier
* (`PSA_ECC_FAMILY_xxx`).
* \param bits The bit-length of a private key on \p curve.
* \param bits_is_sloppy If true, \p bits may be the bit-length rounded up
* to the nearest multiple of 8. This allows the caller
* to infer the exact curve from the length of a key
* which is supplied as a byte string.
*
* \return The corresponding Mbed TLS elliptic curve identifier
* (`MBEDTLS_ECP_DP_xxx`).
* \return #MBEDTLS_ECP_DP_NONE if \c curve is not recognized.
* \return #MBEDTLS_ECP_DP_NONE if \p bits is not
* correct for \p curve.
*/
mbedtls_ecp_group_id mbedtls_ecc_group_of_psa(psa_ecc_family_t curve,
size_t bits,
int bits_is_sloppy);
#endif /* PSA_WANT_KEY_TYPE_ECC_PUBLIC_KEY */
/**@}*/
#endif /* MBEDTLS_PSA_CRYPTO_C */
#endif /* MBEDTLS_PSA_UTIL_H */

47
include/psa/crypto_extra.h
View File

@@ -557,53 +557,6 @@ psa_status_t psa_get_key_domain_parameters(
/**@}*/
/** \defgroup psa_tls_helpers TLS helper functions
* @{
*/
#if defined(PSA_WANT_KEY_TYPE_ECC_PUBLIC_KEY)
#include <mbedtls/ecp.h>
/** Convert an ECC curve identifier from the Mbed TLS encoding to PSA.
*
* \note This function is provided solely for the convenience of
* Mbed TLS and may be removed at any time without notice.
*
* \param grpid An Mbed TLS elliptic curve identifier
* (`MBEDTLS_ECP_DP_xxx`).
* \param[out] bits On success, the bit size of the curve.
*
* \return The corresponding PSA elliptic curve identifier
* (`PSA_ECC_FAMILY_xxx`).
* \return \c 0 on failure (\p grpid is not recognized).
*/
psa_ecc_family_t mbedtls_ecc_group_to_psa(mbedtls_ecp_group_id grpid,
size_t *bits);
/** Convert an ECC curve identifier from the PSA encoding to Mbed TLS.
*
* \note This function is provided solely for the convenience of
* Mbed TLS and may be removed at any time without notice.
*
* \param curve A PSA elliptic curve identifier
* (`PSA_ECC_FAMILY_xxx`).
* \param bits The bit-length of a private key on \p curve.
* \param bits_is_sloppy If true, \p bits may be the bit-length rounded up
* to the nearest multiple of 8. This allows the caller
* to infer the exact curve from the length of a key
* which is supplied as a byte string.
*
* \return The corresponding Mbed TLS elliptic curve identifier
* (`MBEDTLS_ECP_DP_xxx`).
* \return #MBEDTLS_ECP_DP_NONE if \c curve is not recognized.
* \return #MBEDTLS_ECP_DP_NONE if \p bits is not
* correct for \p curve.
*/
mbedtls_ecp_group_id mbedtls_ecc_group_of_psa(psa_ecc_family_t curve,
size_t bits,
int bits_is_sloppy);
#endif /* PSA_WANT_KEY_TYPE_ECC_PUBLIC_KEY */
/**@}*/
/** \defgroup psa_external_rng External random generator
* @{