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psa: simplify management of mbedtls_psa_drbg_context_t

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Signed-off-by: Valerio Setti <valerio.setti@nordicsemi.no>
This commit is contained in:
Valerio Setti
2024-02-26 12:52:44 +01:00
parent a53e7a5cb5
commit 061d4e4655
2 changed files with 7 additions and 19 deletions
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13
library/psa_crypto_random_impl.h
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@ -118,14 +118,6 @@ typedef struct {
#define MBEDTLS_PSA_RANDOM_MAX_REQUEST MBEDTLS_HMAC_DRBG_MAX_REQUEST
#endif
/** A pointer to the PSA DRBG context.
*
* This variable is only intended to be used through the macro
* #MBEDTLS_PSA_DRBG_CTX.
*/
extern mbedtls_psa_drbg_context_t *const mbedtls_psa_drbg_ctx;
#define MBEDTLS_PSA_DRBG_CTX mbedtls_psa_drbg_ctx
/** Seed the PSA DRBG.
*
* \param entropy An entropy context to read the seed from.
@ -138,18 +130,19 @@ extern mbedtls_psa_drbg_context_t *const mbedtls_psa_drbg_ctx;
* \return An Mbed TLS error code (\c MBEDTLS_ERR_xxx) on failure.
*/
static inline int mbedtls_psa_drbg_seed(
mbedtls_psa_drbg_context_t *drbg_ctx,
mbedtls_entropy_context *entropy,
const unsigned char *custom, size_t len)
{
#if defined(MBEDTLS_CTR_DRBG_C)
return mbedtls_ctr_drbg_seed(MBEDTLS_PSA_DRBG_CTX,
return mbedtls_ctr_drbg_seed(drbg_ctx,
mbedtls_entropy_func,
entropy,
custom, len);
#elif defined(MBEDTLS_HMAC_DRBG_C)
const mbedtls_md_info_t *md_info =
mbedtls_md_info_from_type(MBEDTLS_PSA_HMAC_DRBG_MD_TYPE);
return mbedtls_hmac_drbg_seed(MBEDTLS_PSA_DRBG_CTX,
return mbedtls_hmac_drbg_seed(drbg_ctx,
md_info,
mbedtls_entropy_func,
entropy,