[Assorted-commits] SF.net SVN: assorted:[1361] sandbox/trunk/src/c/sha1.c

[<yan...@us...>]

Revision: 1361
          http://assorted.svn.sourceforge.net/assorted/?rev=1361&view=rev
Author:   yangzhang
Date:     2009-05-05 05:43:42 +0000 (Tue, 05 May 2009)

Log Message:
-----------
added demo of sha1 hashing using openssl

Added Paths:
-----------
    sandbox/trunk/src/c/sha1.c

Added: sandbox/trunk/src/c/sha1.c
===================================================================
--- sandbox/trunk/src/c/sha1.c	                        (rev 0)
+++ sandbox/trunk/src/c/sha1.c	2009-05-05 05:43:42 UTC (rev 1361)
@@ -0,0 +1,20 @@
+#include <openssl/sha.h>
+#include <stdio.h>
+void run(const char *data, size_t len) {
+  SHA_CTX c;
+  unsigned char md[SHA_DIGEST_LENGTH];
+  SHA1_Init(&c);
+  SHA1_Update(&c, data, len);
+  SHA1_Final(md, &c);
+  int i;
+  for (i = 0; i < SHA_DIGEST_LENGTH; ++i)
+    printf("%02x ", md[i]);
+  printf("\n");
+}
+int main() {
+  run("hello", 5);
+  run("hello", 6);
+  run("hello\n", 6);
+  run("hello\n", 7);
+  return 0;
+}


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