blob: function to checksum a blob

And use it in couple of places. Some whitespace fixes too.

1 files changed, 10 insertions, 1 deletions

diff --git a/src/blob.c b/src/blob.c
index 3aa61c7..6f05dfe 100644
--- a/src/blob.c
+++ b/src/blob.c
@@ -4,7 +4,7 @@
  * Copyright (C) 2008 Timo Teräs <timo.teras@iki.fi>
  * All rights reserved.
  *
- * This program is free software; you can redistribute it and/or modify it 
+ * This program is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 as published
  * by the Free Software Foundation. See http://www.gnu.org/ for details.
  */
@@ -165,6 +165,15 @@ unsigned apk_blob_uint(apk_blob_t blob, int base)
 	return val;
 }
 
+void apk_blob_csum(apk_blob_t blob, csum_t csum)
+{
+	csum_ctx_t ctx;
+
+	csum_init(&ctx);
+	csum_process(&ctx, blob.ptr, blob.len);
+	csum_finish(&ctx, csum);
+}
+
 int apk_hexdump_parse(apk_blob_t to, apk_blob_t from)
 {
 	int i;