X-Git-Url: http://git.cascardo.eti.br/?a=blobdiff_plain;f=lib%2Fsha1.c;h=4f48ef21027e9d408f70fe5de5322111b3dc49e3;hb=8f79bb4d3999d993424e9578342b4130d10a556c;hp=f73f2d6477e28e32ceed79f2e57e78544bd6190e;hpb=5eccf359391f7fe2cdb0edbaaf5680895c115218;p=cascardo%2Fovs.git

diff --git a/lib/sha1.c b/lib/sha1.c
index f73f2d647..4f48ef210 100644
--- a/lib/sha1.c
+++ b/lib/sha1.c
@@ -1,7 +1,7 @@
 /*
  * This file is from the Apache Portable Runtime Library.
  * The full upstream copyright and license statement is included below.
- * Modifications copyright (c) 2009 Nicira Networks.
+ * Modifications copyright (c) 2009, 2010 Nicira, Inc.
  */
 
 /* Licensed to the Apache Software Foundation (ASF) under one or more
@@ -23,15 +23,18 @@
 /* This software also makes use of the following component:
  *
  * NIST Secure Hash Algorithm
- *  	heavily modified by Uwe Hollerbach uh@alumni.caltech edu
- *	from Peter C. Gutmann's implementation as found in
- *	Applied Cryptography by Bruce Schneier
- *	This code is hereby placed in the public domain
+ *      heavily modified by Uwe Hollerbach uh@alumni.caltech edu
+ *  from Peter C. Gutmann's implementation as found in
+ *  Applied Cryptography by Bruce Schneier
+ *  This code is hereby placed in the public domain
  */
 
 #include <config.h>
 #include "sha1.h"
+#include <ctype.h>
 #include <string.h>
+#include "compiler.h"
+#include "util.h"
 
 /* a bit faster & bigger, if defined */
 #define UNROLL_LOOPS
@@ -62,10 +65,10 @@ f4(uint32_t x, uint32_t y, uint32_t z)
 }
 
 /* SHA constants */
-#define CONST1		0x5a827999L
-#define CONST2		0x6ed9eba1L
-#define CONST3		0x8f1bbcdcL
-#define CONST4		0xca62c1d6L
+#define CONST1      0x5a827999L
+#define CONST2      0x6ed9eba1L
+#define CONST3      0x8f1bbcdcL
+#define CONST4      0xca62c1d6L
 
 /* 32-bit rotate */
 static inline uint32_t
@@ -148,25 +151,25 @@ sha_transform(struct sha1_ctx *sha_info)
 
 /* 'count' is the number of bytes to do an endian flip. */
 static void
-maybe_byte_reverse(uint32_t *buffer, int count)
+maybe_byte_reverse(uint32_t *buffer OVS_UNUSED, int count OVS_UNUSED)
 {
+#if !WORDS_BIGENDIAN
     int i;
     uint8_t ct[4], *cp;
 
-#if !WORDS_BIGENDIAN
-	count /= sizeof(uint32_t);
-	cp = (uint8_t *) buffer;
-	for (i = 0; i < count; i++) {
-	    ct[0] = cp[0];
-	    ct[1] = cp[1];
-	    ct[2] = cp[2];
-	    ct[3] = cp[3];
-	    cp[0] = ct[3];
-	    cp[1] = ct[2];
-	    cp[2] = ct[1];
-	    cp[3] = ct[0];
-	    cp += sizeof(uint32_t);
-	}
+    count /= sizeof(uint32_t);
+    cp = (uint8_t *) buffer;
+    for (i = 0; i < count; i++) {
+        ct[0] = cp[0];
+        ct[1] = cp[1];
+        ct[2] = cp[2];
+        ct[3] = cp[3];
+        cp[0] = ct[3];
+        cp[1] = ct[2];
+        cp[2] = ct[1];
+        cp[3] = ct[0];
+        cp += sizeof(uint32_t);
+    }
 #endif
 }
 
@@ -279,3 +282,34 @@ sha1_bytes(const void *data, size_t n, uint8_t digest[SHA1_DIGEST_SIZE])
     sha1_update(&ctx, data, n);
     sha1_final(&ctx, digest);
 }
+
+void
+sha1_to_hex(const uint8_t digest[SHA1_DIGEST_SIZE],
+            char hex[SHA1_HEX_DIGEST_LEN + 1])
+{
+    int i;
+
+    for (i = 0; i < SHA1_DIGEST_SIZE; i++) {
+        *hex++ = "0123456789abcdef"[digest[i] >> 4];
+        *hex++ = "0123456789abcdef"[digest[i] & 15];
+    }
+    *hex = '\0';
+}
+
+bool
+sha1_from_hex(uint8_t digest[SHA1_DIGEST_SIZE], const char *hex)
+{
+    int i;
+
+    for (i = 0; i < SHA1_DIGEST_SIZE; i++) {
+        bool ok;
+
+        digest[i] = hexits_value(hex, 2, &ok);
+        if (!ok) {
+            return false;
+        }
+        hex += 2;
+    }
+    return true;
+}
+