diff --git a/library/psa_crypto_mac.c b/library/psa_crypto_mac.c
index d771e23..07f123e 100644
--- a/library/psa_crypto_mac.c
+++ b/library/psa_crypto_mac.c
@@ -33,22 +33,22 @@
 
 #if defined(MBEDTLS_PSA_BUILTIN_ALG_HMAC)
 static psa_status_t psa_hmac_abort_internal(
-    mbedtls_psa_hmac_operation_t *hmac )
+    mbedtls_psa_hmac_operation_t *hmac)
 {
-    mbedtls_platform_zeroize( hmac->opad, sizeof( hmac->opad ) );
-    return( psa_hash_abort( &hmac->hash_ctx ) );
+    mbedtls_platform_zeroize(hmac->opad, sizeof(hmac->opad));
+    return psa_hash_abort(&hmac->hash_ctx);
 }
 
 static psa_status_t psa_hmac_setup_internal(
     mbedtls_psa_hmac_operation_t *hmac,
     const uint8_t *key,
     size_t key_length,
-    psa_algorithm_t hash_alg )
+    psa_algorithm_t hash_alg)
 {
     uint8_t ipad[PSA_HMAC_MAX_HASH_BLOCK_SIZE];
     size_t i;
-    size_t hash_size = PSA_HASH_LENGTH( hash_alg );
-    size_t block_size = PSA_HASH_BLOCK_LENGTH( hash_alg );
+    size_t hash_size = PSA_HASH_LENGTH(hash_alg);
+    size_t block_size = PSA_HASH_BLOCK_LENGTH(hash_alg);
     psa_status_t status;
 
     hmac->alg = hash_alg;
@@ -59,134 +59,149 @@
     /* The size checks against the ipad and opad buffers cannot be written
      * `block_size > sizeof( ipad ) || block_size > sizeof( hmac->opad )`
      * because that triggers -Wlogical-op on GCC 7.3. */
-    if( block_size > sizeof( ipad ) )
-        return( PSA_ERROR_NOT_SUPPORTED );
-    if( block_size > sizeof( hmac->opad ) )
-        return( PSA_ERROR_NOT_SUPPORTED );
-    if( block_size < hash_size )
-        return( PSA_ERROR_NOT_SUPPORTED );
+    if (block_size > sizeof(ipad)) {
+        return PSA_ERROR_NOT_SUPPORTED;
+    }
+    if (block_size > sizeof(hmac->opad)) {
+        return PSA_ERROR_NOT_SUPPORTED;
+    }
+    if (block_size < hash_size) {
+        return PSA_ERROR_NOT_SUPPORTED;
+    }
 
-    if( key_length > block_size )
-    {
-        status = psa_hash_compute( hash_alg, key, key_length,
-                                   ipad, sizeof( ipad ), &key_length );
-        if( status != PSA_SUCCESS )
+    if (key_length > block_size) {
+        status = psa_hash_compute(hash_alg, key, key_length,
+                                  ipad, sizeof(ipad), &key_length);
+        if (status != PSA_SUCCESS) {
             goto cleanup;
+        }
     }
     /* A 0-length key is not commonly used in HMAC when used as a MAC,
      * but it is permitted. It is common when HMAC is used in HKDF, for
      * example. Don't call `memcpy` in the 0-length because `key` could be
      * an invalid pointer which would make the behavior undefined. */
-    else if( key_length != 0 )
-        memcpy( ipad, key, key_length );
+    else if (key_length != 0) {
+        memcpy(ipad, key, key_length);
+    }
 
     /* ipad contains the key followed by garbage. Xor and fill with 0x36
      * to create the ipad value. */
-    for( i = 0; i < key_length; i++ )
+    for (i = 0; i < key_length; i++) {
         ipad[i] ^= 0x36;
-    memset( ipad + key_length, 0x36, block_size - key_length );
+    }
+    memset(ipad + key_length, 0x36, block_size - key_length);
 
     /* Copy the key material from ipad to opad, flipping the requisite bits,
      * and filling the rest of opad with the requisite constant. */
-    for( i = 0; i < key_length; i++ )
+    for (i = 0; i < key_length; i++) {
         hmac->opad[i] = ipad[i] ^ 0x36 ^ 0x5C;
-    memset( hmac->opad + key_length, 0x5C, block_size - key_length );
+    }
+    memset(hmac->opad + key_length, 0x5C, block_size - key_length);
 
-    status = psa_hash_setup( &hmac->hash_ctx, hash_alg );
-    if( status != PSA_SUCCESS )
+    status = psa_hash_setup(&hmac->hash_ctx, hash_alg);
+    if (status != PSA_SUCCESS) {
         goto cleanup;
+    }
 
-    status = psa_hash_update( &hmac->hash_ctx, ipad, block_size );
+    status = psa_hash_update(&hmac->hash_ctx, ipad, block_size);
 
 cleanup:
-    mbedtls_platform_zeroize( ipad, sizeof( ipad ) );
+    mbedtls_platform_zeroize(ipad, sizeof(ipad));
 
-    return( status );
+    return status;
 }
 
 static psa_status_t psa_hmac_update_internal(
     mbedtls_psa_hmac_operation_t *hmac,
     const uint8_t *data,
-    size_t data_length )
+    size_t data_length)
 {
-    return( psa_hash_update( &hmac->hash_ctx, data, data_length ) );
+    return psa_hash_update(&hmac->hash_ctx, data, data_length);
 }
 
 static psa_status_t psa_hmac_finish_internal(
     mbedtls_psa_hmac_operation_t *hmac,
     uint8_t *mac,
-    size_t mac_size )
+    size_t mac_size)
 {
     uint8_t tmp[PSA_HASH_MAX_SIZE];
     psa_algorithm_t hash_alg = hmac->alg;
     size_t hash_size = 0;
-    size_t block_size = PSA_HASH_BLOCK_LENGTH( hash_alg );
+    size_t block_size = PSA_HASH_BLOCK_LENGTH(hash_alg);
     psa_status_t status;
 
-    status = psa_hash_finish( &hmac->hash_ctx, tmp, sizeof( tmp ), &hash_size );
-    if( status != PSA_SUCCESS )
-        return( status );
+    status = psa_hash_finish(&hmac->hash_ctx, tmp, sizeof(tmp), &hash_size);
+    if (status != PSA_SUCCESS) {
+        return status;
+    }
     /* From here on, tmp needs to be wiped. */
 
-    status = psa_hash_setup( &hmac->hash_ctx, hash_alg );
-    if( status != PSA_SUCCESS )
+    status = psa_hash_setup(&hmac->hash_ctx, hash_alg);
+    if (status != PSA_SUCCESS) {
         goto exit;
+    }
 
-    status = psa_hash_update( &hmac->hash_ctx, hmac->opad, block_size );
-    if( status != PSA_SUCCESS )
+    status = psa_hash_update(&hmac->hash_ctx, hmac->opad, block_size);
+    if (status != PSA_SUCCESS) {
         goto exit;
+    }
 
-    status = psa_hash_update( &hmac->hash_ctx, tmp, hash_size );
-    if( status != PSA_SUCCESS )
+    status = psa_hash_update(&hmac->hash_ctx, tmp, hash_size);
+    if (status != PSA_SUCCESS) {
         goto exit;
+    }
 
-    status = psa_hash_finish( &hmac->hash_ctx, tmp, sizeof( tmp ), &hash_size );
-    if( status != PSA_SUCCESS )
+    status = psa_hash_finish(&hmac->hash_ctx, tmp, sizeof(tmp), &hash_size);
+    if (status != PSA_SUCCESS) {
         goto exit;
+    }
 
-    memcpy( mac, tmp, mac_size );
+    memcpy(mac, tmp, mac_size);
 
 exit:
-    mbedtls_platform_zeroize( tmp, hash_size );
-    return( status );
+    mbedtls_platform_zeroize(tmp, hash_size);
+    return status;
 }
 #endif /* MBEDTLS_PSA_BUILTIN_ALG_HMAC */
 
 #if defined(MBEDTLS_PSA_BUILTIN_ALG_CMAC)
-static psa_status_t cmac_setup( mbedtls_psa_mac_operation_t *operation,
-                                const psa_key_attributes_t *attributes,
-                                const uint8_t *key_buffer )
+static psa_status_t cmac_setup(mbedtls_psa_mac_operation_t *operation,
+                               const psa_key_attributes_t *attributes,
+                               const uint8_t *key_buffer)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
 
 #if defined(PSA_WANT_KEY_TYPE_DES)
     /* Mbed TLS CMAC does not accept 3DES with only two keys, nor does it accept
      * to do CMAC with pure DES, so return NOT_SUPPORTED here. */
-    if( psa_get_key_type( attributes ) == PSA_KEY_TYPE_DES &&
-        ( psa_get_key_bits( attributes ) == 64 ||
-          psa_get_key_bits( attributes ) == 128 ) )
-        return( PSA_ERROR_NOT_SUPPORTED );
+    if (psa_get_key_type(attributes) == PSA_KEY_TYPE_DES &&
+        (psa_get_key_bits(attributes) == 64 ||
+         psa_get_key_bits(attributes) == 128)) {
+        return PSA_ERROR_NOT_SUPPORTED;
+    }
 #endif
 
-    const mbedtls_cipher_info_t * cipher_info =
+    const mbedtls_cipher_info_t *cipher_info =
         mbedtls_cipher_info_from_psa(
             PSA_ALG_CMAC,
-            psa_get_key_type( attributes ),
-            psa_get_key_bits( attributes ),
-            NULL );
+            psa_get_key_type(attributes),
+            psa_get_key_bits(attributes),
+            NULL);
 
-    if( cipher_info == NULL )
-        return( PSA_ERROR_NOT_SUPPORTED );
+    if (cipher_info == NULL) {
+        return PSA_ERROR_NOT_SUPPORTED;
+    }
 
-    ret = mbedtls_cipher_setup( &operation->ctx.cmac, cipher_info );
-    if( ret != 0 )
+    ret = mbedtls_cipher_setup(&operation->ctx.cmac, cipher_info);
+    if (ret != 0) {
         goto exit;
+    }
 
-    ret = mbedtls_cipher_cmac_starts( &operation->ctx.cmac,
-                                      key_buffer,
-                                      psa_get_key_bits( attributes ) );
+    ret = mbedtls_cipher_cmac_starts(&operation->ctx.cmac,
+                                     key_buffer,
+                                     psa_get_key_bits(attributes));
 exit:
-    return( mbedtls_to_psa_error( ret ) );
+    return mbedtls_to_psa_error(ret);
 }
 #endif /* MBEDTLS_PSA_BUILTIN_ALG_CMAC */
 
@@ -197,62 +212,53 @@
  * called, mbedtls_psa_mac_abort can run and will do the right thing. */
 static psa_status_t mac_init(
     mbedtls_psa_mac_operation_t *operation,
-    psa_algorithm_t alg )
+    psa_algorithm_t alg)
 {
     psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
 
     operation->alg = alg;
 
 #if defined(MBEDTLS_PSA_BUILTIN_ALG_CMAC)
-    if( PSA_ALG_FULL_LENGTH_MAC( operation->alg ) == PSA_ALG_CMAC )
-    {
-        mbedtls_cipher_init( &operation->ctx.cmac );
+    if (PSA_ALG_FULL_LENGTH_MAC(operation->alg) == PSA_ALG_CMAC) {
+        mbedtls_cipher_init(&operation->ctx.cmac);
         status = PSA_SUCCESS;
-    }
-    else
+    } else
 #endif /* MBEDTLS_PSA_BUILTIN_ALG_CMAC */
 #if defined(MBEDTLS_PSA_BUILTIN_ALG_HMAC)
-    if( PSA_ALG_IS_HMAC( operation->alg ) )
-    {
+    if (PSA_ALG_IS_HMAC(operation->alg)) {
         /* We'll set up the hash operation later in psa_hmac_setup_internal. */
         operation->ctx.hmac.alg = 0;
         status = PSA_SUCCESS;
-    }
-    else
+    } else
 #endif /* MBEDTLS_PSA_BUILTIN_ALG_HMAC */
     {
         (void) operation;
         status = PSA_ERROR_NOT_SUPPORTED;
     }
 
-    if( status != PSA_SUCCESS )
-        memset( operation, 0, sizeof( *operation ) );
-    return( status );
+    if (status != PSA_SUCCESS) {
+        memset(operation, 0, sizeof(*operation));
+    }
+    return status;
 }
 
-psa_status_t mbedtls_psa_mac_abort( mbedtls_psa_mac_operation_t *operation )
+psa_status_t mbedtls_psa_mac_abort(mbedtls_psa_mac_operation_t *operation)
 {
-    if( operation->alg == 0 )
-    {
+    if (operation->alg == 0) {
         /* The object has (apparently) been initialized but it is not
          * in use. It's ok to call abort on such an object, and there's
          * nothing to do. */
-        return( PSA_SUCCESS );
-    }
-    else
+        return PSA_SUCCESS;
+    } else
 #if defined(MBEDTLS_PSA_BUILTIN_ALG_CMAC)
-    if( PSA_ALG_FULL_LENGTH_MAC( operation->alg ) == PSA_ALG_CMAC )
-    {
-        mbedtls_cipher_free( &operation->ctx.cmac );
-    }
-    else
+    if (PSA_ALG_FULL_LENGTH_MAC(operation->alg) == PSA_ALG_CMAC) {
+        mbedtls_cipher_free(&operation->ctx.cmac);
+    } else
 #endif /* MBEDTLS_PSA_BUILTIN_ALG_CMAC */
 #if defined(MBEDTLS_PSA_BUILTIN_ALG_HMAC)
-    if( PSA_ALG_IS_HMAC( operation->alg ) )
-    {
-        psa_hmac_abort_internal( &operation->ctx.hmac );
-    }
-    else
+    if (PSA_ALG_IS_HMAC(operation->alg)) {
+        psa_hmac_abort_internal(&operation->ctx.hmac);
+    } else
 #endif /* MBEDTLS_PSA_BUILTIN_ALG_HMAC */
     {
         /* Sanity check (shouldn't happen: operation->alg should
@@ -262,52 +268,50 @@
 
     operation->alg = 0;
 
-    return( PSA_SUCCESS );
+    return PSA_SUCCESS;
 
 bad_state:
     /* If abort is called on an uninitialized object, we can't trust
      * anything. Wipe the object in case it contains confidential data.
      * This may result in a memory leak if a pointer gets overwritten,
      * but it's too late to do anything about this. */
-    memset( operation, 0, sizeof( *operation ) );
-    return( PSA_ERROR_BAD_STATE );
+    memset(operation, 0, sizeof(*operation));
+    return PSA_ERROR_BAD_STATE;
 }
 
-static psa_status_t psa_mac_setup( mbedtls_psa_mac_operation_t *operation,
-                                   const psa_key_attributes_t *attributes,
-                                   const uint8_t *key_buffer,
-                                   size_t key_buffer_size,
-                                   psa_algorithm_t alg )
+static psa_status_t psa_mac_setup(mbedtls_psa_mac_operation_t *operation,
+                                  const psa_key_attributes_t *attributes,
+                                  const uint8_t *key_buffer,
+                                  size_t key_buffer_size,
+                                  psa_algorithm_t alg)
 {
     psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
 
     /* A context must be freshly initialized before it can be set up. */
-    if( operation->alg != 0 )
-        return( PSA_ERROR_BAD_STATE );
+    if (operation->alg != 0) {
+        return PSA_ERROR_BAD_STATE;
+    }
 
-    status = mac_init( operation, alg );
-    if( status != PSA_SUCCESS )
-        return( status );
+    status = mac_init(operation, alg);
+    if (status != PSA_SUCCESS) {
+        return status;
+    }
 
 #if defined(MBEDTLS_PSA_BUILTIN_ALG_CMAC)
-    if( PSA_ALG_FULL_LENGTH_MAC( alg ) == PSA_ALG_CMAC )
-    {
+    if (PSA_ALG_FULL_LENGTH_MAC(alg) == PSA_ALG_CMAC) {
         /* Key buffer size for CMAC is dictated by the key bits set on the
          * attributes, and previously validated by the core on key import. */
         (void) key_buffer_size;
-        status = cmac_setup( operation, attributes, key_buffer );
-    }
-    else
+        status = cmac_setup(operation, attributes, key_buffer);
+    } else
 #endif /* MBEDTLS_PSA_BUILTIN_ALG_CMAC */
 #if defined(MBEDTLS_PSA_BUILTIN_ALG_HMAC)
-    if( PSA_ALG_IS_HMAC( alg ) )
-    {
-        status = psa_hmac_setup_internal( &operation->ctx.hmac,
-                                          key_buffer,
-                                          key_buffer_size,
-                                          PSA_ALG_HMAC_GET_HASH( alg ) );
-    }
-    else
+    if (PSA_ALG_IS_HMAC(alg)) {
+        status = psa_hmac_setup_internal(&operation->ctx.hmac,
+                                         key_buffer,
+                                         key_buffer_size,
+                                         PSA_ALG_HMAC_GET_HASH(alg));
+    } else
 #endif /* MBEDTLS_PSA_BUILTIN_ALG_HMAC */
     {
         (void) attributes;
@@ -316,10 +320,11 @@
         status = PSA_ERROR_NOT_SUPPORTED;
     }
 
-    if( status != PSA_SUCCESS )
-        mbedtls_psa_mac_abort( operation );
+    if (status != PSA_SUCCESS) {
+        mbedtls_psa_mac_abort(operation);
+    }
 
-    return( status );
+    return status;
 }
 
 psa_status_t mbedtls_psa_mac_sign_setup(
@@ -327,10 +332,10 @@
     const psa_key_attributes_t *attributes,
     const uint8_t *key_buffer,
     size_t key_buffer_size,
-    psa_algorithm_t alg )
+    psa_algorithm_t alg)
 {
-    return( psa_mac_setup( operation, attributes,
-                           key_buffer, key_buffer_size, alg ) );
+    return psa_mac_setup(operation, attributes,
+                         key_buffer, key_buffer_size, alg);
 }
 
 psa_status_t mbedtls_psa_mac_verify_setup(
@@ -338,69 +343,63 @@
     const psa_key_attributes_t *attributes,
     const uint8_t *key_buffer,
     size_t key_buffer_size,
-    psa_algorithm_t alg )
+    psa_algorithm_t alg)
 {
-    return( psa_mac_setup( operation, attributes,
-                           key_buffer, key_buffer_size, alg ) );
+    return psa_mac_setup(operation, attributes,
+                         key_buffer, key_buffer_size, alg);
 }
 
 psa_status_t mbedtls_psa_mac_update(
     mbedtls_psa_mac_operation_t *operation,
     const uint8_t *input,
-    size_t input_length )
+    size_t input_length)
 {
-    if( operation->alg == 0 )
-        return( PSA_ERROR_BAD_STATE );
+    if (operation->alg == 0) {
+        return PSA_ERROR_BAD_STATE;
+    }
 
 #if defined(MBEDTLS_PSA_BUILTIN_ALG_CMAC)
-    if( PSA_ALG_FULL_LENGTH_MAC( operation->alg ) == PSA_ALG_CMAC )
-    {
-        return( mbedtls_to_psa_error(
-                    mbedtls_cipher_cmac_update( &operation->ctx.cmac,
-                                                input, input_length ) ) );
-    }
-    else
+    if (PSA_ALG_FULL_LENGTH_MAC(operation->alg) == PSA_ALG_CMAC) {
+        return mbedtls_to_psa_error(
+            mbedtls_cipher_cmac_update(&operation->ctx.cmac,
+                                       input, input_length));
+    } else
 #endif /* MBEDTLS_PSA_BUILTIN_ALG_CMAC */
 #if defined(MBEDTLS_PSA_BUILTIN_ALG_HMAC)
-    if( PSA_ALG_IS_HMAC( operation->alg ) )
-    {
-        return( psa_hmac_update_internal( &operation->ctx.hmac,
-                                          input, input_length ) );
-    }
-    else
+    if (PSA_ALG_IS_HMAC(operation->alg)) {
+        return psa_hmac_update_internal(&operation->ctx.hmac,
+                                        input, input_length);
+    } else
 #endif /* MBEDTLS_PSA_BUILTIN_ALG_HMAC */
     {
         /* This shouldn't happen if `operation` was initialized by
          * a setup function. */
         (void) input;
         (void) input_length;
-        return( PSA_ERROR_BAD_STATE );
+        return PSA_ERROR_BAD_STATE;
     }
 }
 
 static psa_status_t psa_mac_finish_internal(
     mbedtls_psa_mac_operation_t *operation,
-    uint8_t *mac, size_t mac_size )
+    uint8_t *mac, size_t mac_size)
 {
 #if defined(MBEDTLS_PSA_BUILTIN_ALG_CMAC)
-    if( PSA_ALG_FULL_LENGTH_MAC( operation->alg ) == PSA_ALG_CMAC )
-    {
+    if (PSA_ALG_FULL_LENGTH_MAC(operation->alg) == PSA_ALG_CMAC) {
         uint8_t tmp[PSA_BLOCK_CIPHER_BLOCK_MAX_SIZE];
-        int ret = mbedtls_cipher_cmac_finish( &operation->ctx.cmac, tmp );
-        if( ret == 0 )
-            memcpy( mac, tmp, mac_size );
-        mbedtls_platform_zeroize( tmp, sizeof( tmp ) );
-        return( mbedtls_to_psa_error( ret ) );
-    }
-    else
+        int ret = mbedtls_cipher_cmac_finish(&operation->ctx.cmac, tmp);
+        if (ret == 0) {
+            memcpy(mac, tmp, mac_size);
+        }
+        mbedtls_platform_zeroize(tmp, sizeof(tmp));
+        return mbedtls_to_psa_error(ret);
+    } else
 #endif /* MBEDTLS_PSA_BUILTIN_ALG_CMAC */
 #if defined(MBEDTLS_PSA_BUILTIN_ALG_HMAC)
-    if( PSA_ALG_IS_HMAC( operation->alg ) )
-    {
-        return( psa_hmac_finish_internal( &operation->ctx.hmac,
-                                          mac, mac_size ) );
-    }
-    else
+    if (PSA_ALG_IS_HMAC(operation->alg)) {
+        return psa_hmac_finish_internal(&operation->ctx.hmac,
+                                        mac, mac_size);
+    } else
 #endif /* MBEDTLS_PSA_BUILTIN_ALG_HMAC */
     {
         /* This shouldn't happen if `operation` was initialized by
@@ -408,7 +407,7 @@
         (void) operation;
         (void) mac;
         (void) mac_size;
-        return( PSA_ERROR_BAD_STATE );
+        return PSA_ERROR_BAD_STATE;
     }
 }
 
@@ -416,46 +415,52 @@
     mbedtls_psa_mac_operation_t *operation,
     uint8_t *mac,
     size_t mac_size,
-    size_t *mac_length )
+    size_t *mac_length)
 {
     psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
 
-    if( operation->alg == 0 )
-        return( PSA_ERROR_BAD_STATE );
+    if (operation->alg == 0) {
+        return PSA_ERROR_BAD_STATE;
+    }
 
-    status = psa_mac_finish_internal( operation, mac, mac_size );
-    if( status == PSA_SUCCESS )
+    status = psa_mac_finish_internal(operation, mac, mac_size);
+    if (status == PSA_SUCCESS) {
         *mac_length = mac_size;
+    }
 
-    return( status );
+    return status;
 }
 
 psa_status_t mbedtls_psa_mac_verify_finish(
     mbedtls_psa_mac_operation_t *operation,
     const uint8_t *mac,
-    size_t mac_length )
+    size_t mac_length)
 {
     uint8_t actual_mac[PSA_MAC_MAX_SIZE];
     psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
 
-    if( operation->alg == 0 )
-        return( PSA_ERROR_BAD_STATE );
+    if (operation->alg == 0) {
+        return PSA_ERROR_BAD_STATE;
+    }
 
     /* Consistency check: requested MAC length fits our local buffer */
-    if( mac_length > sizeof( actual_mac ) )
-        return( PSA_ERROR_INVALID_ARGUMENT );
+    if (mac_length > sizeof(actual_mac)) {
+        return PSA_ERROR_INVALID_ARGUMENT;
+    }
 
-    status = psa_mac_finish_internal( operation, actual_mac, mac_length );
-    if( status != PSA_SUCCESS )
+    status = psa_mac_finish_internal(operation, actual_mac, mac_length);
+    if (status != PSA_SUCCESS) {
         goto cleanup;
+    }
 
-    if( mbedtls_psa_safer_memcmp( mac, actual_mac, mac_length ) != 0 )
+    if (mbedtls_psa_safer_memcmp(mac, actual_mac, mac_length) != 0) {
         status = PSA_ERROR_INVALID_SIGNATURE;
+    }
 
 cleanup:
-    mbedtls_platform_zeroize( actual_mac, sizeof( actual_mac ) );
+    mbedtls_platform_zeroize(actual_mac, sizeof(actual_mac));
 
-    return( status );
+    return status;
 }
 
 psa_status_t mbedtls_psa_mac_compute(
@@ -467,32 +472,34 @@
     size_t input_length,
     uint8_t *mac,
     size_t mac_size,
-    size_t *mac_length )
+    size_t *mac_length)
 {
     psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
     mbedtls_psa_mac_operation_t operation = MBEDTLS_PSA_MAC_OPERATION_INIT;
 
-    status = psa_mac_setup( &operation,
-                            attributes, key_buffer, key_buffer_size,
-                            alg );
-    if( status != PSA_SUCCESS )
+    status = psa_mac_setup(&operation,
+                           attributes, key_buffer, key_buffer_size,
+                           alg);
+    if (status != PSA_SUCCESS) {
         goto exit;
-
-    if( input_length > 0 )
-    {
-        status = mbedtls_psa_mac_update( &operation, input, input_length );
-        if( status != PSA_SUCCESS )
-            goto exit;
     }
 
-    status = psa_mac_finish_internal( &operation, mac, mac_size );
-    if( status == PSA_SUCCESS )
+    if (input_length > 0) {
+        status = mbedtls_psa_mac_update(&operation, input, input_length);
+        if (status != PSA_SUCCESS) {
+            goto exit;
+        }
+    }
+
+    status = psa_mac_finish_internal(&operation, mac, mac_size);
+    if (status == PSA_SUCCESS) {
         *mac_length = mac_size;
+    }
 
 exit:
-    mbedtls_psa_mac_abort( &operation );
+    mbedtls_psa_mac_abort(&operation);
 
-    return( status );
+    return status;
 }
 
 #endif /* MBEDTLS_PSA_BUILTIN_ALG_HMAC || MBEDTLS_PSA_BUILTIN_ALG_CMAC */