Use more comprehensive public domain dedications

[wimlib] / src / sha1.c

diff --git a/src/sha1.c b/src/sha1.c
index 1b2abb2f226a3b293a55347c5ec541b2cbc26f9e..d15325063d92b6e047ccfb438a7b683d4fb056ab 100644 (file)
--- a/src/sha1.c
+++ b/src/sha1.c
@@ -1,15 +1,21 @@
 /*
- * sha1.c
+ * sha1.c - implementation of the Secure Hash Algorithm version 1 (FIPS 180-1)
  *
- * Implementation of the Secure Hash Algorithm version 1 (FIPS 180-1).
+ * The following copying information applies to this specific source code file:
  *
- * Author:  Eric Biggers
- * Year:    2014
+ * Written in 2014-2015 by Eric Biggers <ebiggers3@gmail.com>
  *
- * The default SHA-1 transform is based on public domain code by Steve Reid.
+ * To the extent possible under law, the author(s) have dedicated all copyright
+ * and related and neighboring rights to this software to the public domain
+ * worldwide via the Creative Commons Zero 1.0 Universal Public Domain
+ * Dedication (the "CC0").
  *
- * The author dedicates this file to the public domain.
- * You can do whatever you want with this file.
+ * This software is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE. See the CC0 for more details.
+ *
+ * You should have received a copy of the CC0 along with this software; if not
+ * see <http://creativecommons.org/publicdomain/zero/1.0/>.
  */
 
 #ifdef HAVE_CONFIG_H
@@ -51,7 +57,7 @@ sprint_hash(const u8 hash[SHA1_HASH_SIZE], tchar strbuf[SHA1_HASH_SIZE * 2 + 1])
 
 #define rol(value, bits) (((value) << (bits)) | ((value) >> (32 - (bits))))
 
-#define blk0(i) (tmp[i] = be32_to_cpu(((const be32 *)block)[i]))
+#define blk0(i) (tmp[i] = be32_to_cpu(load_be32_unaligned(&(block)[(i) * 4])))
 
 #define blk(i) (tmp[i & 15] = rol(tmp[(i + 13) & 15] ^ \
                                  tmp[(i +  8) & 15] ^ \