X-Git-Url: https://git.ozlabs.org/?p=ppp.git;a=blobdiff_plain;f=pppd%2Fsha1.c;h=4e51cee506c237ce2385ad3ed94003e31c9f1914;hp=b56a7c9a6efb80decccd448a57838f3960377efb;hb=f1a34da3b2f5336e4993a729e5ac2130d0e0595a;hpb=bcfa20820fc9ff3b25bcf62308e3e737c1897dc6

diff --git a/pppd/sha1.c b/pppd/sha1.c
index b56a7c9..4e51cee 100644
--- a/pppd/sha1.c
+++ b/pppd/sha1.c
@@ -17,9 +17,14 @@
 /* #define SHA1HANDSOFF * Copies data before messing with it. */
 
 #include <string.h>
+#include <time.h>
 #include <netinet/in.h>	/* htonl() */
+#include <net/ppp_defs.h>
 #include "sha1.h"
 
+static void
+SHA1_Transform(u_int32_t[5], const unsigned char[64]);
+
 #define rol(value, bits) (((value) << (bits)) | ((value) >> (32 - (bits))))
 
 /* blk0() and blk() perform the initial expand. */
@@ -38,12 +43,13 @@
 
 /* Hash a single 512-bit block. This is the core of the algorithm. */
 
-void SHA1_Transform(unsigned long state[5], const unsigned char buffer[64])
+static void
+SHA1_Transform(u_int32_t state[5], const unsigned char buffer[64])
 {
-    unsigned long a, b, c, d, e;
+    u_int32_t a, b, c, d, e;
     typedef union {
 	unsigned char c[64];
-	unsigned long l[16];
+	u_int32_t l[16];
     } CHAR64LONG16;
     CHAR64LONG16 *block;
 
@@ -94,7 +100,8 @@ void SHA1_Transform(unsigned long state[5], const unsigned char buffer[64])
 
 /* SHA1Init - Initialize new context */
 
-void SHA1_Init(SHA1_CTX *context)
+void
+SHA1_Init(SHA1_CTX *context)
 {
     /* SHA1 initialization constants */
     context->state[0] = 0x67452301;
@@ -108,33 +115,34 @@ void SHA1_Init(SHA1_CTX *context)
 
 /* Run your data through this. */
 
-void SHA1_Update(SHA1_CTX *context, const unsigned char *data, unsigned int len)
+void
+SHA1_Update(SHA1_CTX *context, const unsigned char *data, unsigned int len)
 {
     unsigned int i, j;
 
     j = (context->count[0] >> 3) & 63;
     if ((context->count[0] += len << 3) < (len << 3)) context->count[1]++;
     context->count[1] += (len >> 29);
-    if ((j + len) > 63) {
-	memcpy(&context->buffer[j], data, (i = 64-j));
+    i = 64 - j;
+    while (len >= i) {
+	memcpy(&context->buffer[j], data, i);
 	SHA1_Transform(context->state, context->buffer);
-	for ( ; i + 63 < len; i += 64) {
-	    SHA1_Transform(context->state, &data[i]);
-	}
+	data += i;
+	len -= i;
+	i = 64;
 	j = 0;
     }
-    else
-	i = 0;
 
-    memcpy(&context->buffer[j], &data[i], len - i);
+    memcpy(&context->buffer[j], data, len);
 }
 
 
 /* Add padding and return the message digest. */
 
-void SHA1_Final(unsigned char digest[20], SHA1_CTX *context)
+void
+SHA1_Final(unsigned char digest[20], SHA1_CTX *context)
 {
-    unsigned long i, j;
+    u_int32_t i, j;
     unsigned char finalcount[8];
 
     for (i = 0; i < 8; i++) {