X-Git-Url: http://git.vrable.net/?a=blobdiff_plain;f=third_party%2Fsha1.cc;h=9e9e74bff6c4a25ca724b32f6b3efc9bd5501ca3;hb=86852c7d1d491d73ae9ecc64ee5a8c3dcece4ca0;hp=7111f94ab40ad67fcb7745f90def6861728f0efe;hpb=35dd99aa3d47805b661fe3126a951710fa7dee11;p=cumulus.git

diff --git a/third_party/sha1.cc b/third_party/sha1.cc
index 7111f94..9e9e74b 100644
--- a/third_party/sha1.cc
+++ b/third_party/sha1.cc
@@ -1,9 +1,12 @@
 /* sha1.cc - Functions to compute SHA1 message digest of data streams
  * according to the NIST specification FIPS-180-1.
- * part of Cumulus: Smart Filesystem Backup to Dumb Servers
+ * part of Cumulus: Efficient Filesystem Backup to the Cloud
  *
  * Copyright (C) 2000, 2001, 2003, 2004, 2005 Free Software Foundation, Inc.
  * Copyright (C) 2006-2007  The Regents of the University of California
+ * Copyright (C) 2012 The Cumulus Developers
+ * See the AUTHORS file for a list of Cumulus contributors.
+ *
  * Written by Scott G. Miller
  * Additional Credits:
  *    Robert Klep <robert@ilse.nl>  -- Expansion function fix
@@ -27,6 +30,7 @@
  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  */
 
+#include "../hash.h"
 #include "sha1.h"
 
 #include <stddef.h>
@@ -392,3 +396,40 @@ string SHA1Checksum::checksum_str()
 
     return result;
 }
+
+class SHA1Hash : public Hash {
+public:
+    SHA1Hash();
+    static Hash *New() { return new SHA1Hash; }
+    virtual void update(const void *data, size_t len);
+    virtual size_t digest_size() const { return 20; }
+    virtual std::string name() const { return "sha1"; }
+
+protected:
+    const uint8_t *finalize();
+
+private:
+    struct sha1_ctx ctx;
+    char resbuf[20] __attribute__ ((__aligned__ (__alignof__ (md5_uint32))));
+};
+
+SHA1Hash::SHA1Hash()
+{
+    sha1_init_ctx(&ctx);
+}
+
+void SHA1Hash::update(const void *data, size_t len)
+{
+    sha1_process_bytes(data, len, &ctx);
+}
+
+const uint8_t *SHA1Hash::finalize()
+{
+    sha1_finish_ctx(&ctx, resbuf);
+    return (const uint8_t *)resbuf;
+}
+
+void sha1_register()
+{
+    Hash::Register("sha1", SHA1Hash::New);
+}