Lots of random changes.

git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@1107 ec53bebd-3082-4978-b11e-865c3cabbd6b

lib/krb5/crc.c

@@ -0,0 +1,33 @@
+#include <stdio.h>
+#include "crc.h"
+
+static u_long table[256];
+
+void
+crc_init_table( )
+{
+    unsigned long crc, poly;
+    int     i, j;
+    
+    poly = 0xEDB88320L;
+    for (i = 0; i < 256; i++) {
+	crc = i;
+	for (j = 8; j > 0; j--) {
+	    if (crc & 1) {
+		crc = (crc >> 1) ^ poly;
+	    } else {
+		crc >>= 1;
+	    }
+	}
+	table[i] = crc;
+    }
+}
+
+u_long
+crc_update (char *p, size_t len, u_long res)
+{
+    res ^= 0xFFFFFFFF;
+    while (len--)
+	res = table[(res ^ *p++) & 0xFF] ^ (res >> 8);
+    return res & 0xFFFFFFFF;
+}