diff --git a/library/psa_its_file.c b/library/psa_its_file.c
index ddd9fa9..be3c2d5 100644
--- a/library/psa_its_file.c
+++ b/library/psa_its_file.c
@@ -42,10 +42,10 @@
 #define PSA_ITS_STORAGE_FILENAME_PATTERN "%08x%08x"
 #define PSA_ITS_STORAGE_SUFFIX ".psa_its"
 #define PSA_ITS_STORAGE_FILENAME_LENGTH         \
-    ( sizeof( PSA_ITS_STORAGE_PREFIX ) - 1 + /*prefix without terminating 0*/ \
-      16 + /*UID (64-bit number in hex)*/                               \
-      sizeof( PSA_ITS_STORAGE_SUFFIX ) - 1 + /*suffix without terminating 0*/ \
-      1 /*terminating null byte*/ )
+    (sizeof(PSA_ITS_STORAGE_PREFIX) - 1 +    /*prefix without terminating 0*/ \
+     16 +  /*UID (64-bit number in hex)*/                               \
+     sizeof(PSA_ITS_STORAGE_SUFFIX) - 1 +    /*suffix without terminating 0*/ \
+     1 /*terminating null byte*/)
 #define PSA_ITS_STORAGE_TEMP \
     PSA_ITS_STORAGE_PREFIX "tempfile" PSA_ITS_STORAGE_SUFFIX
 
@@ -59,130 +59,140 @@
  * use MoveFileExA with the MOVEFILE_REPLACE_EXISTING flag instead.
  * Returns 0 on success, nonzero on failure. */
 #if defined(_WIN32)
-#define rename_replace_existing( oldpath, newpath ) \
-    ( ! MoveFileExA( oldpath, newpath, MOVEFILE_REPLACE_EXISTING ) )
+#define rename_replace_existing(oldpath, newpath) \
+    (!MoveFileExA(oldpath, newpath, MOVEFILE_REPLACE_EXISTING))
 #else
-#define rename_replace_existing( oldpath, newpath ) rename( oldpath, newpath )
+#define rename_replace_existing(oldpath, newpath) rename(oldpath, newpath)
 #endif
 
-typedef struct
-{
+typedef struct {
     uint8_t magic[PSA_ITS_MAGIC_LENGTH];
-    uint8_t size[sizeof( uint32_t )];
-    uint8_t flags[sizeof( psa_storage_create_flags_t )];
+    uint8_t size[sizeof(uint32_t)];
+    uint8_t flags[sizeof(psa_storage_create_flags_t)];
 } psa_its_file_header_t;
 
-static void psa_its_fill_filename( psa_storage_uid_t uid, char *filename )
+static void psa_its_fill_filename(psa_storage_uid_t uid, char *filename)
 {
     /* Break up the UID into two 32-bit pieces so as not to rely on
      * long long support in snprintf. */
-    mbedtls_snprintf( filename, PSA_ITS_STORAGE_FILENAME_LENGTH,
-                      "%s" PSA_ITS_STORAGE_FILENAME_PATTERN "%s",
-                      PSA_ITS_STORAGE_PREFIX,
-                      (unsigned) ( uid >> 32 ),
-                      (unsigned) ( uid & 0xffffffff ),
-                      PSA_ITS_STORAGE_SUFFIX );
+    mbedtls_snprintf(filename, PSA_ITS_STORAGE_FILENAME_LENGTH,
+                     "%s" PSA_ITS_STORAGE_FILENAME_PATTERN "%s",
+                     PSA_ITS_STORAGE_PREFIX,
+                     (unsigned) (uid >> 32),
+                     (unsigned) (uid & 0xffffffff),
+                     PSA_ITS_STORAGE_SUFFIX);
 }
 
-static psa_status_t psa_its_read_file( psa_storage_uid_t uid,
-                                       struct psa_storage_info_t *p_info,
-                                       FILE **p_stream )
+static psa_status_t psa_its_read_file(psa_storage_uid_t uid,
+                                      struct psa_storage_info_t *p_info,
+                                      FILE **p_stream)
 {
     char filename[PSA_ITS_STORAGE_FILENAME_LENGTH];
     psa_its_file_header_t header;
     size_t n;
 
     *p_stream = NULL;
-    psa_its_fill_filename( uid, filename );
-    *p_stream = fopen( filename, "rb" );
-    if( *p_stream == NULL )
-        return( PSA_ERROR_DOES_NOT_EXIST );
+    psa_its_fill_filename(uid, filename);
+    *p_stream = fopen(filename, "rb");
+    if (*p_stream == NULL) {
+        return PSA_ERROR_DOES_NOT_EXIST;
+    }
 
-    n = fread( &header, 1, sizeof( header ), *p_stream );
-    if( n != sizeof( header ) )
-        return( PSA_ERROR_DATA_CORRUPT );
-    if( memcmp( header.magic, PSA_ITS_MAGIC_STRING,
-                PSA_ITS_MAGIC_LENGTH ) != 0 )
-        return( PSA_ERROR_DATA_CORRUPT );
+    n = fread(&header, 1, sizeof(header), *p_stream);
+    if (n != sizeof(header)) {
+        return PSA_ERROR_DATA_CORRUPT;
+    }
+    if (memcmp(header.magic, PSA_ITS_MAGIC_STRING,
+               PSA_ITS_MAGIC_LENGTH) != 0) {
+        return PSA_ERROR_DATA_CORRUPT;
+    }
 
-    p_info->size = ( header.size[0] |
-                     header.size[1] << 8 |
-                     header.size[2] << 16 |
-                     header.size[3] << 24 );
-    p_info->flags = ( header.flags[0] |
-                      header.flags[1] << 8 |
-                      header.flags[2] << 16 |
-                      header.flags[3] << 24 );
-    return( PSA_SUCCESS );
+    p_info->size = (header.size[0] |
+                    header.size[1] << 8 |
+                    header.size[2] << 16 |
+                    header.size[3] << 24);
+    p_info->flags = (header.flags[0] |
+                     header.flags[1] << 8 |
+                     header.flags[2] << 16 |
+                     header.flags[3] << 24);
+    return PSA_SUCCESS;
 }
 
-psa_status_t psa_its_get_info( psa_storage_uid_t uid,
-                               struct psa_storage_info_t *p_info )
+psa_status_t psa_its_get_info(psa_storage_uid_t uid,
+                              struct psa_storage_info_t *p_info)
 {
     psa_status_t status;
     FILE *stream = NULL;
-    status = psa_its_read_file( uid, p_info, &stream );
-    if( stream != NULL )
-        fclose( stream );
-    return( status );
+    status = psa_its_read_file(uid, p_info, &stream);
+    if (stream != NULL) {
+        fclose(stream);
+    }
+    return status;
 }
 
-psa_status_t psa_its_get( psa_storage_uid_t uid,
-                          uint32_t data_offset,
-                          uint32_t data_length,
-                          void *p_data,
-                          size_t *p_data_length )
+psa_status_t psa_its_get(psa_storage_uid_t uid,
+                         uint32_t data_offset,
+                         uint32_t data_length,
+                         void *p_data,
+                         size_t *p_data_length)
 {
     psa_status_t status;
     FILE *stream = NULL;
     size_t n;
     struct psa_storage_info_t info;
 
-    status = psa_its_read_file( uid, &info, &stream );
-    if( status != PSA_SUCCESS )
+    status = psa_its_read_file(uid, &info, &stream);
+    if (status != PSA_SUCCESS) {
         goto exit;
+    }
     status = PSA_ERROR_INVALID_ARGUMENT;
-    if( data_offset + data_length < data_offset )
+    if (data_offset + data_length < data_offset) {
         goto exit;
+    }
 #if SIZE_MAX < 0xffffffff
-    if( data_offset + data_length > SIZE_MAX )
+    if (data_offset + data_length > SIZE_MAX) {
         goto exit;
+    }
 #endif
-    if( data_offset + data_length > info.size )
+    if (data_offset + data_length > info.size) {
         goto exit;
+    }
 
     status = PSA_ERROR_STORAGE_FAILURE;
 #if LONG_MAX < 0xffffffff
-    while( data_offset > LONG_MAX )
-    {
-        if( fseek( stream, LONG_MAX, SEEK_CUR ) != 0 )
+    while (data_offset > LONG_MAX) {
+        if (fseek(stream, LONG_MAX, SEEK_CUR) != 0) {
             goto exit;
+        }
         data_offset -= LONG_MAX;
     }
 #endif
-    if( fseek( stream, data_offset, SEEK_CUR ) != 0 )
+    if (fseek(stream, data_offset, SEEK_CUR) != 0) {
         goto exit;
-    n = fread( p_data, 1, data_length, stream );
-    if( n != data_length )
+    }
+    n = fread(p_data, 1, data_length, stream);
+    if (n != data_length) {
         goto exit;
+    }
     status = PSA_SUCCESS;
-    if( p_data_length != NULL )
+    if (p_data_length != NULL) {
         *p_data_length = n;
+    }
 
 exit:
-    if( stream != NULL )
-        fclose( stream );
-    return( status );
+    if (stream != NULL) {
+        fclose(stream);
+    }
+    return status;
 }
 
-psa_status_t psa_its_set( psa_storage_uid_t uid,
-                          uint32_t data_length,
-                          const void *p_data,
-                          psa_storage_create_flags_t create_flags )
+psa_status_t psa_its_set(psa_storage_uid_t uid,
+                         uint32_t data_length,
+                         const void *p_data,
+                         psa_storage_create_flags_t create_flags)
 {
-    if( uid == 0 )
-    {
-        return( PSA_ERROR_INVALID_HANDLE );
+    if (uid == 0) {
+        return PSA_ERROR_INVALID_HANDLE;
     }
 
     psa_status_t status = PSA_ERROR_STORAGE_FAILURE;
@@ -191,60 +201,64 @@
     psa_its_file_header_t header;
     size_t n;
 
-    memcpy( header.magic, PSA_ITS_MAGIC_STRING, PSA_ITS_MAGIC_LENGTH );
-    MBEDTLS_PUT_UINT32_LE( data_length, header.size, 0 );
-    MBEDTLS_PUT_UINT32_LE( create_flags, header.flags, 0 );
+    memcpy(header.magic, PSA_ITS_MAGIC_STRING, PSA_ITS_MAGIC_LENGTH);
+    MBEDTLS_PUT_UINT32_LE(data_length, header.size, 0);
+    MBEDTLS_PUT_UINT32_LE(create_flags, header.flags, 0);
 
-    psa_its_fill_filename( uid, filename );
-    stream = fopen( PSA_ITS_STORAGE_TEMP, "wb" );
-    if( stream == NULL )
+    psa_its_fill_filename(uid, filename);
+    stream = fopen(PSA_ITS_STORAGE_TEMP, "wb");
+    if (stream == NULL) {
         goto exit;
+    }
 
     status = PSA_ERROR_INSUFFICIENT_STORAGE;
-    n = fwrite( &header, 1, sizeof( header ), stream );
-    if( n != sizeof( header ) )
+    n = fwrite(&header, 1, sizeof(header), stream);
+    if (n != sizeof(header)) {
         goto exit;
-    if( data_length != 0 )
-    {
-        n = fwrite( p_data, 1, data_length, stream );
-        if( n != data_length )
+    }
+    if (data_length != 0) {
+        n = fwrite(p_data, 1, data_length, stream);
+        if (n != data_length) {
             goto exit;
+        }
     }
     status = PSA_SUCCESS;
 
 exit:
-    if( stream != NULL )
-    {
-        int ret = fclose( stream );
-        if( status == PSA_SUCCESS && ret != 0 )
+    if (stream != NULL) {
+        int ret = fclose(stream);
+        if (status == PSA_SUCCESS && ret != 0) {
             status = PSA_ERROR_INSUFFICIENT_STORAGE;
+        }
     }
-    if( status == PSA_SUCCESS )
-    {
-        if( rename_replace_existing( PSA_ITS_STORAGE_TEMP, filename ) != 0 )
+    if (status == PSA_SUCCESS) {
+        if (rename_replace_existing(PSA_ITS_STORAGE_TEMP, filename) != 0) {
             status = PSA_ERROR_STORAGE_FAILURE;
+        }
     }
     /* The temporary file may still exist, but only in failure cases where
      * we're already reporting an error. So there's nothing we can do on
      * failure. If the function succeeded, and in some error cases, the
      * temporary file doesn't exist and so remove() is expected to fail.
      * Thus we just ignore the return status of remove(). */
-    (void) remove( PSA_ITS_STORAGE_TEMP );
-    return( status );
+    (void) remove(PSA_ITS_STORAGE_TEMP);
+    return status;
 }
 
-psa_status_t psa_its_remove( psa_storage_uid_t uid )
+psa_status_t psa_its_remove(psa_storage_uid_t uid)
 {
     char filename[PSA_ITS_STORAGE_FILENAME_LENGTH];
     FILE *stream;
-    psa_its_fill_filename( uid, filename );
-    stream = fopen( filename, "rb" );
-    if( stream == NULL )
-        return( PSA_ERROR_DOES_NOT_EXIST );
-    fclose( stream );
-    if( remove( filename ) != 0 )
-        return( PSA_ERROR_STORAGE_FAILURE );
-    return( PSA_SUCCESS );
+    psa_its_fill_filename(uid, filename);
+    stream = fopen(filename, "rb");
+    if (stream == NULL) {
+        return PSA_ERROR_DOES_NOT_EXIST;
+    }
+    fclose(stream);
+    if (remove(filename) != 0) {
+        return PSA_ERROR_STORAGE_FAILURE;
+    }
+    return PSA_SUCCESS;
 }
 
 #endif /* MBEDTLS_PSA_ITS_FILE_C */