diff --git a/programs/psa/aead_demo.c b/programs/psa/aead_demo.c
index 1efd132..0c2413e 100644
--- a/programs/psa/aead_demo.c
+++ b/programs/psa/aead_demo.c
@@ -57,20 +57,20 @@
     !defined(MBEDTLS_AES_C) || !defined(MBEDTLS_GCM_C) || \
     !defined(MBEDTLS_CHACHAPOLY_C) || \
     defined(MBEDTLS_PSA_CRYPTO_KEY_ID_ENCODES_OWNER)
-int main( void )
+int main(void)
 {
-    printf( "MBEDTLS_PSA_CRYPTO_C and/or "
-            "MBEDTLS_AES_C and/or MBEDTLS_GCM_C and/or "
-            "MBEDTLS_CHACHAPOLY_C not defined, and/or "
-            "MBEDTLS_PSA_CRYPTO_KEY_ID_ENCODES_OWNER defined\r\n" );
-    return( 0 );
+    printf("MBEDTLS_PSA_CRYPTO_C and/or "
+           "MBEDTLS_AES_C and/or MBEDTLS_GCM_C and/or "
+           "MBEDTLS_CHACHAPOLY_C not defined, and/or "
+           "MBEDTLS_PSA_CRYPTO_KEY_ID_ENCODES_OWNER defined\r\n");
+    return 0;
 }
 #else
 
 /* The real program starts here. */
 
 const char usage[] =
-"Usage: aead_demo [aes128-gcm|aes256-gcm|aes128-gcm_8|chachapoly]";
+    "Usage: aead_demo [aes128-gcm|aes256-gcm|aes128-gcm_8|chachapoly]";
 
 /* Dummy data for encryption: IV/nonce, additional data, 2-part message */
 const unsigned char iv1[12] = { 0x00 };
@@ -85,40 +85,41 @@
 const unsigned char msg2_part2[] = { 0x15, 0x16, 0x17 };
 
 /* Maximum total size of the messages */
-#define MSG1_SIZE ( sizeof( msg1_part1 ) + sizeof( msg1_part2 ) )
-#define MSG2_SIZE ( sizeof( msg2_part1 ) + sizeof( msg2_part2 ) )
-#define MSG_MAX_SIZE ( MSG1_SIZE > MSG2_SIZE ? MSG1_SIZE : MSG2_SIZE )
+#define MSG1_SIZE (sizeof(msg1_part1) + sizeof(msg1_part2))
+#define MSG2_SIZE (sizeof(msg2_part1) + sizeof(msg2_part2))
+#define MSG_MAX_SIZE (MSG1_SIZE > MSG2_SIZE ? MSG1_SIZE : MSG2_SIZE)
 
 /* Dummy key material - never do this in production!
  * 32-byte is enough to all the key size supported by this program. */
 const unsigned char key_bytes[32] = { 0x2a };
 
 /* Print the contents of a buffer in hex */
-void print_buf( const char *title, uint8_t *buf, size_t len )
+void print_buf(const char *title, uint8_t *buf, size_t len)
 {
-    printf( "%s:", title );
-    for( size_t i = 0; i < len; i++ )
-        printf( " %02x", buf[i] );
-    printf( "\n" );
+    printf("%s:", title);
+    for (size_t i = 0; i < len; i++) {
+        printf(" %02x", buf[i]);
+    }
+    printf("\n");
 }
 
 /* Run a PSA function and bail out if it fails.
  * The symbolic name of the error code can be recovered using:
  * programs/psa/psa_constant_name status <value> */
-#define PSA_CHECK( expr )                                       \
+#define PSA_CHECK(expr)                                       \
     do                                                          \
     {                                                           \
-        status = ( expr );                                      \
-        if( status != PSA_SUCCESS )                             \
+        status = (expr);                                      \
+        if (status != PSA_SUCCESS)                             \
         {                                                       \
-            printf( "Error %d at line %d: %s\n",                \
-                    (int) status,                               \
-                    __LINE__,                                   \
-                    #expr );                                    \
+            printf("Error %d at line %d: %s\n",                \
+                   (int) status,                               \
+                   __LINE__,                                   \
+                   #expr);                                    \
             goto exit;                                          \
         }                                                       \
     }                                                           \
-    while( 0 )
+    while (0)
 
 /*
  * Prepare encryption material:
@@ -126,48 +127,48 @@
  * - set up key
  * - outputs: key and algorithm, which together hold all the information
  */
-static psa_status_t aead_prepare( const char *info,
-                                  psa_key_id_t *key,
-                                  psa_algorithm_t *alg )
+static psa_status_t aead_prepare(const char *info,
+                                 psa_key_id_t *key,
+                                 psa_algorithm_t *alg)
 {
     psa_status_t status;
 
     /* Convert arg to alg + key_bits + key_type */
     size_t key_bits;
     psa_key_type_t key_type;
-    if( strcmp( info, "aes128-gcm" ) == 0 ) {
+    if (strcmp(info, "aes128-gcm") == 0) {
         *alg = PSA_ALG_GCM;
         key_bits = 128;
         key_type = PSA_KEY_TYPE_AES;
-    } else if( strcmp( info, "aes256-gcm" ) == 0 ) {
+    } else if (strcmp(info, "aes256-gcm") == 0) {
         *alg = PSA_ALG_GCM;
         key_bits = 256;
         key_type = PSA_KEY_TYPE_AES;
-    } else if( strcmp( info, "aes128-gcm_8" ) == 0 ) {
+    } else if (strcmp(info, "aes128-gcm_8") == 0) {
         *alg = PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_GCM, 8);
         key_bits = 128;
         key_type = PSA_KEY_TYPE_AES;
-    } else if( strcmp( info, "chachapoly" ) == 0 ) {
+    } else if (strcmp(info, "chachapoly") == 0) {
         *alg = PSA_ALG_CHACHA20_POLY1305;
         key_bits = 256;
         key_type = PSA_KEY_TYPE_CHACHA20;
     } else {
-        puts( usage );
-        return( PSA_ERROR_INVALID_ARGUMENT );
+        puts(usage);
+        return PSA_ERROR_INVALID_ARGUMENT;
     }
 
     /* Prepare key attributes */
     psa_key_attributes_t attributes = PSA_KEY_ATTRIBUTES_INIT;
-    psa_set_key_usage_flags( &attributes, PSA_KEY_USAGE_ENCRYPT );
-    psa_set_key_algorithm( &attributes, *alg );
-    psa_set_key_type( &attributes, key_type );
-    psa_set_key_bits( &attributes, key_bits ); // optional
+    psa_set_key_usage_flags(&attributes, PSA_KEY_USAGE_ENCRYPT);
+    psa_set_key_algorithm(&attributes, *alg);
+    psa_set_key_type(&attributes, key_type);
+    psa_set_key_bits(&attributes, key_bits);   // optional
 
     /* Import key */
-    PSA_CHECK( psa_import_key( &attributes, key_bytes, key_bits / 8, key ) );
+    PSA_CHECK(psa_import_key(&attributes, key_bytes, key_bits / 8, key));
 
 exit:
-    return( status );
+    return status;
 }
 
 /*
@@ -176,14 +177,14 @@
  * All of this information was present in the command line argument, but his
  * function demonstrates how each piece can be recovered from (key, alg).
  */
-static void aead_info( psa_key_id_t key, psa_algorithm_t alg )
+static void aead_info(psa_key_id_t key, psa_algorithm_t alg)
 {
     psa_key_attributes_t attr = PSA_KEY_ATTRIBUTES_INIT;
-    (void) psa_get_key_attributes( key, &attr );
-    psa_key_type_t key_type = psa_get_key_type( &attr );
-    size_t key_bits = psa_get_key_bits( &attr );
-    psa_algorithm_t base_alg = PSA_ALG_AEAD_WITH_DEFAULT_LENGTH_TAG( alg );
-    size_t tag_len = PSA_AEAD_TAG_LENGTH( key_type, key_bits, alg );
+    (void) psa_get_key_attributes(key, &attr);
+    psa_key_type_t key_type = psa_get_key_type(&attr);
+    size_t key_bits = psa_get_key_bits(&attr);
+    psa_algorithm_t base_alg = PSA_ALG_AEAD_WITH_DEFAULT_LENGTH_TAG(alg);
+    size_t tag_len = PSA_AEAD_TAG_LENGTH(key_type, key_bits, alg);
 
     const char *type_str = key_type == PSA_KEY_TYPE_AES ? "AES"
                          : key_type == PSA_KEY_TYPE_CHACHA20 ? "Chacha"
@@ -192,102 +193,101 @@
                          : base_alg == PSA_ALG_CHACHA20_POLY1305 ? "ChachaPoly"
                          : "???";
 
-    printf( "%s, %u, %s, %u\n",
-            type_str, (unsigned) key_bits, base_str, (unsigned) tag_len );
+    printf("%s, %u, %s, %u\n",
+           type_str, (unsigned) key_bits, base_str, (unsigned) tag_len);
 }
 
 /*
  * Encrypt a 2-part message.
  */
-static int aead_encrypt( psa_key_id_t key, psa_algorithm_t alg,
-        const unsigned char *iv, size_t iv_len,
-        const unsigned char *ad, size_t ad_len,
-        const unsigned char *part1, size_t part1_len,
-        const unsigned char *part2, size_t part2_len )
+static int aead_encrypt(psa_key_id_t key, psa_algorithm_t alg,
+                        const unsigned char *iv, size_t iv_len,
+                        const unsigned char *ad, size_t ad_len,
+                        const unsigned char *part1, size_t part1_len,
+                        const unsigned char *part2, size_t part2_len)
 {
     psa_status_t status;
     size_t olen, olen_tag;
     unsigned char out[PSA_AEAD_ENCRYPT_OUTPUT_MAX_SIZE(MSG_MAX_SIZE)];
-    unsigned char *p = out, *end = out + sizeof( out );
+    unsigned char *p = out, *end = out + sizeof(out);
     unsigned char tag[PSA_AEAD_TAG_MAX_SIZE];
 
     psa_aead_operation_t op = PSA_AEAD_OPERATION_INIT;
-    PSA_CHECK( psa_aead_encrypt_setup( &op, key, alg ) );
+    PSA_CHECK(psa_aead_encrypt_setup(&op, key, alg));
 
-    PSA_CHECK( psa_aead_set_nonce( &op, iv, iv_len ) );
-    PSA_CHECK( psa_aead_update_ad( &op, ad, ad_len ) );
-    PSA_CHECK( psa_aead_update( &op, part1, part1_len, p, end - p, &olen ) );
+    PSA_CHECK(psa_aead_set_nonce(&op, iv, iv_len));
+    PSA_CHECK(psa_aead_update_ad(&op, ad, ad_len));
+    PSA_CHECK(psa_aead_update(&op, part1, part1_len, p, end - p, &olen));
     p += olen;
-    PSA_CHECK( psa_aead_update( &op, part2, part2_len, p, end - p, &olen ) );
+    PSA_CHECK(psa_aead_update(&op, part2, part2_len, p, end - p, &olen));
     p += olen;
-    PSA_CHECK( psa_aead_finish( &op, p, end - p, &olen,
-                               tag, sizeof( tag ), &olen_tag ) );
+    PSA_CHECK(psa_aead_finish(&op, p, end - p, &olen,
+                              tag, sizeof(tag), &olen_tag));
     p += olen;
-    memcpy( p, tag, olen_tag );
+    memcpy(p, tag, olen_tag);
     p += olen_tag;
 
     olen = p - out;
-    print_buf( "out", out, olen );
+    print_buf("out", out, olen);
 
 exit:
-    psa_aead_abort( &op ); // required on errors, harmless on success
-    return( status );
+    psa_aead_abort(&op);   // required on errors, harmless on success
+    return status;
 }
 
 /*
  * AEAD demo: set up key/alg, print out info, encrypt messages.
  */
-static psa_status_t aead_demo( const char *info )
+static psa_status_t aead_demo(const char *info)
 {
     psa_status_t status;
 
     psa_key_id_t key;
     psa_algorithm_t alg;
 
-    PSA_CHECK( aead_prepare( info, &key, &alg ) );
+    PSA_CHECK(aead_prepare(info, &key, &alg));
 
-    aead_info( key, alg );
+    aead_info(key, alg);
 
-    PSA_CHECK( aead_encrypt( key, alg,
-                       iv1, sizeof( iv1 ), add_data1, sizeof( add_data1 ),
-                       msg1_part1, sizeof( msg1_part1 ),
-                       msg1_part2, sizeof( msg1_part2 ) ) );
-    PSA_CHECK( aead_encrypt( key, alg,
-                       iv2, sizeof( iv2 ), add_data2, sizeof( add_data2 ),
-                       msg2_part1, sizeof( msg2_part1 ),
-                       msg2_part2, sizeof( msg2_part2 ) ) );
+    PSA_CHECK(aead_encrypt(key, alg,
+                           iv1, sizeof(iv1), add_data1, sizeof(add_data1),
+                           msg1_part1, sizeof(msg1_part1),
+                           msg1_part2, sizeof(msg1_part2)));
+    PSA_CHECK(aead_encrypt(key, alg,
+                           iv2, sizeof(iv2), add_data2, sizeof(add_data2),
+                           msg2_part1, sizeof(msg2_part1),
+                           msg2_part2, sizeof(msg2_part2)));
 
 exit:
-    psa_destroy_key( key );
+    psa_destroy_key(key);
 
-    return( status );
+    return status;
 }
 
 /*
  * Main function
  */
-int main( int argc, char **argv )
+int main(int argc, char **argv)
 {
     psa_status_t status = PSA_SUCCESS;
 
     /* Check usage */
-    if( argc != 2 )
-    {
-        puts( usage );
-        return( EXIT_FAILURE );
+    if (argc != 2) {
+        puts(usage);
+        return EXIT_FAILURE;
     }
 
     /* Initialize the PSA crypto library. */
-    PSA_CHECK( psa_crypto_init( ) );
+    PSA_CHECK(psa_crypto_init());
 
     /* Run the demo */
-    PSA_CHECK( aead_demo( argv[1] ) );
+    PSA_CHECK(aead_demo(argv[1]));
 
     /* Deinitialize the PSA crypto library. */
-    mbedtls_psa_crypto_free( );
+    mbedtls_psa_crypto_free();
 
 exit:
-    return( status == PSA_SUCCESS ? EXIT_SUCCESS : EXIT_FAILURE );
+    return status == PSA_SUCCESS ? EXIT_SUCCESS : EXIT_FAILURE;
 }
 
 #endif