commit 061d4e4655e54779b3788a107ab9c61d4cfee466
author Valerio Setti <valerio.setti@nordicsemi.no> Mon Feb 26 12:52:44 2024 +0100
committer Valerio Setti <valerio.setti@nordicsemi.no> Mon Feb 26 12:52:44 2024 +0100
tree c890a98528307aa87fbbaa8ba9f3cded78ae56af
parent a53e7a5cb56e8cdc50fb02f31fabf9701792b526

psa: simplify management of mbedtls_psa_drbg_context_t

Signed-off-by: Valerio Setti <valerio.setti@nordicsemi.no>

library/psa_crypto.c

diff --git a/library/psa_crypto.c b/library/psa_crypto.c
index c371339..c8dd0d0 100644
--- a/library/psa_crypto.c
+++ b/library/psa_crypto.c
@@ -101,11 +101,6 @@
 
 static psa_global_data_t global_data;
 
-#if !defined(MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG)
-mbedtls_psa_drbg_context_t *const mbedtls_psa_drbg_ctx =
-    &global_data.rng.drbg;
-#endif
-
 #define GUARD_MODULE_INITIALIZED        \
     if (global_data.initialized == 0)  \
     return PSA_ERROR_BAD_STATE;
@@ -7322,7 +7317,7 @@
                                MBEDTLS_ENTROPY_SOURCE_STRONG);
 #endif
 
-    mbedtls_psa_drbg_init(MBEDTLS_PSA_DRBG_CTX);
+    mbedtls_psa_drbg_init(&rng->drbg);
 #endif /* MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG */
 }
 
@@ -7333,7 +7328,7 @@
 #if defined(MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG)
     memset(rng, 0, sizeof(*rng));
 #else /* MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG */
-    mbedtls_psa_drbg_free(MBEDTLS_PSA_DRBG_CTX);
+    mbedtls_psa_drbg_free(&rng->drbg);
     rng->entropy_free(&rng->entropy);
 #endif /* MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG */
 }
@@ -7348,7 +7343,7 @@
     return PSA_SUCCESS;
 #else /* MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG */
     const unsigned char drbg_seed[] = "PSA";
-    int ret = mbedtls_psa_drbg_seed(&rng->entropy,
+    int ret = mbedtls_psa_drbg_seed(&rng->drbg, &rng->entropy,
                                     drbg_seed, sizeof(drbg_seed) - 1);
     return mbedtls_to_psa_error(ret);
 #endif /* MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG */
@@ -7382,7 +7377,7 @@
             (output_size > MBEDTLS_PSA_RANDOM_MAX_REQUEST ?
              MBEDTLS_PSA_RANDOM_MAX_REQUEST :
              output_size);
-        int ret = mbedtls_psa_legacy_get_random(MBEDTLS_PSA_DRBG_CTX,
+        int ret = mbedtls_psa_legacy_get_random(&global_data.rng.drbg,
                                                 output, request_size);
         if (ret != 0) {
             return mbedtls_to_psa_error(ret);