diff --git a/programs/pkey/rsa_sign.c b/programs/pkey/rsa_sign.c
index debc168..a28a699 100644
--- a/programs/pkey/rsa_sign.c
+++ b/programs/pkey/rsa_sign.c
@@ -28,12 +28,12 @@
 #if !defined(MBEDTLS_BIGNUM_C) || !defined(MBEDTLS_RSA_C) ||  \
     !defined(MBEDTLS_SHA256_C) || !defined(MBEDTLS_MD_C) || \
     !defined(MBEDTLS_FS_IO)
-int main( void )
+int main(void)
 {
     mbedtls_printf("MBEDTLS_BIGNUM_C and/or MBEDTLS_RSA_C and/or "
-            "MBEDTLS_MD_C and/or "
-            "MBEDTLS_SHA256_C and/or MBEDTLS_FS_IO not defined.\n");
-    mbedtls_exit( 0 );
+                   "MBEDTLS_MD_C and/or "
+                   "MBEDTLS_SHA256_C and/or MBEDTLS_FS_IO not defined.\n");
+    mbedtls_exit(0);
 }
 #else
 
@@ -44,7 +44,7 @@
 #include <string.h>
 
 
-int main( int argc, char *argv[] )
+int main(int argc, char *argv[])
 {
     FILE *f;
     int ret = 1;
@@ -56,67 +56,62 @@
     char filename[512];
     mbedtls_mpi N, P, Q, D, E, DP, DQ, QP;
 
-    mbedtls_rsa_init( &rsa, MBEDTLS_RSA_PKCS_V15, 0 );
+    mbedtls_rsa_init(&rsa, MBEDTLS_RSA_PKCS_V15, 0);
 
-    mbedtls_mpi_init( &N ); mbedtls_mpi_init( &P ); mbedtls_mpi_init( &Q );
-    mbedtls_mpi_init( &D ); mbedtls_mpi_init( &E ); mbedtls_mpi_init( &DP );
-    mbedtls_mpi_init( &DQ ); mbedtls_mpi_init( &QP );
+    mbedtls_mpi_init(&N); mbedtls_mpi_init(&P); mbedtls_mpi_init(&Q);
+    mbedtls_mpi_init(&D); mbedtls_mpi_init(&E); mbedtls_mpi_init(&DP);
+    mbedtls_mpi_init(&DQ); mbedtls_mpi_init(&QP);
 
-    if( argc != 2 )
-    {
-        mbedtls_printf( "usage: rsa_sign <filename>\n" );
+    if (argc != 2) {
+        mbedtls_printf("usage: rsa_sign <filename>\n");
 
 #if defined(_WIN32)
-        mbedtls_printf( "\n" );
+        mbedtls_printf("\n");
 #endif
 
         goto exit;
     }
 
-    mbedtls_printf( "\n  . Reading private key from rsa_priv.txt" );
-    fflush( stdout );
+    mbedtls_printf("\n  . Reading private key from rsa_priv.txt");
+    fflush(stdout);
 
-    if( ( f = fopen( "rsa_priv.txt", "rb" ) ) == NULL )
-    {
-        mbedtls_printf( " failed\n  ! Could not open rsa_priv.txt\n" \
-                "  ! Please run rsa_genkey first\n\n" );
+    if ((f = fopen("rsa_priv.txt", "rb")) == NULL) {
+        mbedtls_printf(" failed\n  ! Could not open rsa_priv.txt\n" \
+                       "  ! Please run rsa_genkey first\n\n");
         goto exit;
     }
 
-    if( ( ret = mbedtls_mpi_read_file( &N , 16, f ) ) != 0 ||
-        ( ret = mbedtls_mpi_read_file( &E , 16, f ) ) != 0 ||
-        ( ret = mbedtls_mpi_read_file( &D , 16, f ) ) != 0 ||
-        ( ret = mbedtls_mpi_read_file( &P , 16, f ) ) != 0 ||
-        ( ret = mbedtls_mpi_read_file( &Q , 16, f ) ) != 0 ||
-        ( ret = mbedtls_mpi_read_file( &DP , 16, f ) ) != 0 ||
-        ( ret = mbedtls_mpi_read_file( &DQ , 16, f ) ) != 0 ||
-        ( ret = mbedtls_mpi_read_file( &QP , 16, f ) ) != 0 )
-    {
-        mbedtls_printf( " failed\n  ! mbedtls_mpi_read_file returned %d\n\n", ret );
-        fclose( f );
+    if ((ret = mbedtls_mpi_read_file(&N, 16, f)) != 0 ||
+        (ret = mbedtls_mpi_read_file(&E, 16, f)) != 0 ||
+        (ret = mbedtls_mpi_read_file(&D, 16, f)) != 0 ||
+        (ret = mbedtls_mpi_read_file(&P, 16, f)) != 0 ||
+        (ret = mbedtls_mpi_read_file(&Q, 16, f)) != 0 ||
+        (ret = mbedtls_mpi_read_file(&DP, 16, f)) != 0 ||
+        (ret = mbedtls_mpi_read_file(&DQ, 16, f)) != 0 ||
+        (ret = mbedtls_mpi_read_file(&QP, 16, f)) != 0) {
+        mbedtls_printf(" failed\n  ! mbedtls_mpi_read_file returned %d\n\n", ret);
+        fclose(f);
         goto exit;
     }
-    fclose( f );
+    fclose(f);
 
-    if( ( ret = mbedtls_rsa_import( &rsa, &N, &P, &Q, &D, &E ) ) != 0 )
-    {
-        mbedtls_printf( " failed\n  ! mbedtls_rsa_import returned %d\n\n",
-                        ret );
+    if ((ret = mbedtls_rsa_import(&rsa, &N, &P, &Q, &D, &E)) != 0) {
+        mbedtls_printf(" failed\n  ! mbedtls_rsa_import returned %d\n\n",
+                       ret);
         goto exit;
     }
 
-    if( ( ret = mbedtls_rsa_complete( &rsa ) ) != 0 )
-    {
-        mbedtls_printf( " failed\n  ! mbedtls_rsa_complete returned %d\n\n",
-                        ret );
+    if ((ret = mbedtls_rsa_complete(&rsa)) != 0) {
+        mbedtls_printf(" failed\n  ! mbedtls_rsa_complete returned %d\n\n",
+                       ret);
         goto exit;
     }
 
-    mbedtls_printf( "\n  . Checking the private key" );
-    fflush( stdout );
-    if( ( ret = mbedtls_rsa_check_privkey( &rsa ) ) != 0 )
-    {
-        mbedtls_printf( " failed\n  ! mbedtls_rsa_check_privkey failed with -0x%0x\n", (unsigned int) -ret );
+    mbedtls_printf("\n  . Checking the private key");
+    fflush(stdout);
+    if ((ret = mbedtls_rsa_check_privkey(&rsa)) != 0) {
+        mbedtls_printf(" failed\n  ! mbedtls_rsa_check_privkey failed with -0x%0x\n",
+                       (unsigned int) -ret);
         goto exit;
     }
 
@@ -124,58 +119,57 @@
      * Compute the SHA-256 hash of the input file,
      * then calculate the RSA signature of the hash.
      */
-    mbedtls_printf( "\n  . Generating the RSA/SHA-256 signature" );
-    fflush( stdout );
+    mbedtls_printf("\n  . Generating the RSA/SHA-256 signature");
+    fflush(stdout);
 
-    if( ( ret = mbedtls_md_file(
-                    mbedtls_md_info_from_type( MBEDTLS_MD_SHA256 ),
-                    argv[1], hash ) ) != 0 )
-    {
-        mbedtls_printf( " failed\n  ! Could not open or read %s\n\n", argv[1] );
+    if ((ret = mbedtls_md_file(
+             mbedtls_md_info_from_type(MBEDTLS_MD_SHA256),
+             argv[1], hash)) != 0) {
+        mbedtls_printf(" failed\n  ! Could not open or read %s\n\n", argv[1]);
         goto exit;
     }
 
-    if( ( ret = mbedtls_rsa_pkcs1_sign( &rsa, NULL, NULL, MBEDTLS_RSA_PRIVATE, MBEDTLS_MD_SHA256,
-                                20, hash, buf ) ) != 0 )
-    {
-        mbedtls_printf( " failed\n  ! mbedtls_rsa_pkcs1_sign returned -0x%0x\n\n", (unsigned int) -ret );
+    if ((ret = mbedtls_rsa_pkcs1_sign(&rsa, NULL, NULL, MBEDTLS_RSA_PRIVATE, MBEDTLS_MD_SHA256,
+                                      20, hash, buf)) != 0) {
+        mbedtls_printf(" failed\n  ! mbedtls_rsa_pkcs1_sign returned -0x%0x\n\n",
+                       (unsigned int) -ret);
         goto exit;
     }
 
     /*
      * Write the signature into <filename>.sig
      */
-    mbedtls_snprintf( filename, sizeof(filename), "%s.sig", argv[1] );
+    mbedtls_snprintf(filename, sizeof(filename), "%s.sig", argv[1]);
 
-    if( ( f = fopen( filename, "wb+" ) ) == NULL )
-    {
-        mbedtls_printf( " failed\n  ! Could not create %s\n\n", argv[1] );
+    if ((f = fopen(filename, "wb+")) == NULL) {
+        mbedtls_printf(" failed\n  ! Could not create %s\n\n", argv[1]);
         goto exit;
     }
 
-    for( i = 0; i < rsa.len; i++ )
-        mbedtls_fprintf( f, "%02X%s", buf[i],
-                 ( i + 1 ) % 16 == 0 ? "\r\n" : " " );
+    for (i = 0; i < rsa.len; i++) {
+        mbedtls_fprintf(f, "%02X%s", buf[i],
+                        (i + 1) % 16 == 0 ? "\r\n" : " ");
+    }
 
-    fclose( f );
+    fclose(f);
 
-    mbedtls_printf( "\n  . Done (created \"%s\")\n\n", filename );
+    mbedtls_printf("\n  . Done (created \"%s\")\n\n", filename);
 
     exit_code = MBEDTLS_EXIT_SUCCESS;
 
 exit:
 
-    mbedtls_rsa_free( &rsa );
-    mbedtls_mpi_free( &N ); mbedtls_mpi_free( &P ); mbedtls_mpi_free( &Q );
-    mbedtls_mpi_free( &D ); mbedtls_mpi_free( &E ); mbedtls_mpi_free( &DP );
-    mbedtls_mpi_free( &DQ ); mbedtls_mpi_free( &QP );
+    mbedtls_rsa_free(&rsa);
+    mbedtls_mpi_free(&N); mbedtls_mpi_free(&P); mbedtls_mpi_free(&Q);
+    mbedtls_mpi_free(&D); mbedtls_mpi_free(&E); mbedtls_mpi_free(&DP);
+    mbedtls_mpi_free(&DQ); mbedtls_mpi_free(&QP);
 
 #if defined(_WIN32)
-    mbedtls_printf( "  + Press Enter to exit this program.\n" );
-    fflush( stdout ); getchar();
+    mbedtls_printf("  + Press Enter to exit this program.\n");
+    fflush(stdout); getchar();
 #endif
 
-    mbedtls_exit( exit_code );
+    mbedtls_exit(exit_code);
 }
 #endif /* MBEDTLS_BIGNUM_C && MBEDTLS_RSA_C && MBEDTLS_SHA256_C &&
           MBEDTLS_FS_IO */