tests/sys/psa_crypto_se_mac: Remove symlinks

tests/sys/psa_crypto_se_mac/Makefile

@@ -11,9 +11,7 @@ USEMODULE += psa_secure_element
 USEMODULE += psa_secure_element_ateccx08a
 USEMODULE += psa_secure_element_ateccx08a_hmac_sha256
 
-ifneq (1, $(SHOULD_RUN_KCONFIG))
-  CFLAGS += -DCONFIG_PSA_PROTECTED_KEY_COUNT=1
-endif
+CFLAGS += -DCONFIG_PSA_PROTECTED_KEY_COUNT=1
 
 CFLAGS += -DSECURE_ELEMENT
 CFLAGS += -DCUSTOM_ATCA_PARAMS

tests/sys/psa_crypto_se_mac/Makefile.ci

@@ -8,5 +8,4 @@ BOARD_INSUFFICIENT_MEMORY := \
     atmega8 \
     nucleo-l011k4 \
     samd10-xmini \
-    stm32f030f4-demo \
     #

tests/sys/psa_crypto_se_mac/example_hmac_sha256.c

@@ -0,0 +1,76 @@
+/*
+ * Copyright (C) 2022 HAW Hamburg
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License v2.1. See the file LICENSE in the top level
+ * directory for more details.
+ */
+
+/**
+ * @ingroup examples
+ * @{
+ *
+ * @brief   Example functions for HMAC SHA256 with PSA Crypto
+ *
+ * @author  Lena Boeckmann <[email protected]>
+ *
+ * @}
+ */
+
+#include <stdio.h>
+#include <stdint.h>
+
+#include "psa/crypto.h"
+
+static const uint8_t HMAC_KEY[] = {
+    0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b,
+    0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b,
+    0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b,
+    0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b
+};
+static size_t HMAC_KEY_LEN = 32;
+
+static const uint8_t HMAC_MSG[] = {
+    0x54, 0x68, 0x69, 0x73, 0x20, 0x69, 0x73, 0x20,
+    0x61, 0x20, 0x74, 0x65, 0x73, 0x74, 0x73, 0x74,
+    0x72, 0x69, 0x6e, 0x67, 0x20, 0x66, 0x6f, 0x72,
+    0x20, 0x68, 0x6d, 0x61, 0x63, 0x32, 0x35, 0x36
+};
+static size_t HMAC_MSG_LEN = 32;
+
+/**
+ * @brief   Example function to perform an HMAC SHA-256 computation
+ *          with the PSA Crypto API.
+ *
+ * @return  psa_status_t
+ */
+psa_status_t example_hmac_sha256(void)
+{
+    psa_key_attributes_t attr = psa_key_attributes_init();
+    psa_key_id_t key_id = 0;
+    psa_key_usage_t usage = PSA_KEY_USAGE_SIGN_MESSAGE;
+
+    size_t digest_size =
+        PSA_MAC_LENGTH(PSA_KEY_TYPE_HMAC, HMAC_KEY_LEN, PSA_ALG_HMAC(PSA_ALG_SHA_256));
+    uint8_t digest[digest_size];
+    size_t output_len = 0;
+
+    psa_set_key_algorithm(&attr, PSA_ALG_HMAC(PSA_ALG_SHA_256));
+    psa_set_key_usage_flags(&attr, usage);
+    psa_set_key_bits(&attr, PSA_BYTES_TO_BITS(HMAC_KEY_LEN));
+    psa_set_key_type(&attr, PSA_KEY_TYPE_HMAC);
+
+    psa_key_lifetime_t lifetime = PSA_KEY_LIFETIME_FROM_PERSISTENCE_AND_LOCATION(
+        PSA_KEY_LIFETIME_VOLATILE, PSA_ATCA_LOCATION_DEV0);
+    psa_set_key_lifetime(&attr, lifetime);
+
+    psa_status_t status = PSA_ERROR_DOES_NOT_EXIST;
+    status = psa_import_key(&attr, HMAC_KEY, HMAC_KEY_LEN, &key_id);
+    if (status != PSA_SUCCESS) {
+        return status;
+    }
+
+    return psa_mac_compute(key_id, PSA_ALG_HMAC(PSA_ALG_SHA_256),
+                           HMAC_MSG, HMAC_MSG_LEN, digest, digest_size,
+                           &output_len);
+}

tests/sys/psa_crypto_se_mac/main.c

@@ -0,0 +1,56 @@
+/*
+ * Copyright (C) 2022 HAW Hamburg
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License v2.1. See the file LICENSE in the top level
+ * directory for more details.
+ */
+
+/**
+ * @ingroup     examples
+ * @{
+ *
+ * @brief       Example application for PSA Crypto
+ *
+ * @author      Lena Boeckmann <[email protected]>
+ *
+ * @}
+ */
+
+#include <stdio.h>
+#include "psa/crypto.h"
+#include "ztimer.h"
+
+extern psa_status_t example_hmac_sha256(void);
+
+int main(void)
+{
+    bool failed = false;
+    psa_status_t status;
+
+    psa_crypto_init();
+
+    ztimer_acquire(ZTIMER_USEC);
+    ztimer_now_t start = ztimer_now(ZTIMER_USEC);
+
+    /* Needed in case only hashes are tested */
+    (void)status;
+    (void)start;
+
+    status = example_hmac_sha256();
+    printf("HMAC SHA256 took %d us\n", (int)(ztimer_now(ZTIMER_USEC) - start));
+    if (status != PSA_SUCCESS) {
+        failed = true;
+        printf("HMAC SHA256 failed: %s\n", psa_status_to_humanly_readable(status));
+    }
+
+    ztimer_release(ZTIMER_USEC);
+
+    if (failed) {
+        puts("Tests failed...");
+    }
+    else {
+        puts("All Done");
+    }
+    return 0;
+}