/[dynamips]/upstream/dynamips-0.2.7-RC2/sbox.h
This is repository of my old source code which isn't updated any more. Go to git.rot13.org for current projects!
ViewVC logotype

Annotation of /upstream/dynamips-0.2.7-RC2/sbox.h

Parent Directory Parent Directory | Revision Log Revision Log


Revision 8 - (hide annotations)
Sat Oct 6 16:24:54 2007 UTC (13 years ago) by dpavlin
File MIME type: text/plain
File size: 792 byte(s)
dynamips-0.2.7-RC2

1 dpavlin 8 /*
2     * Cisco router simulation platform.
3     * Copyright (c) 2007 Christophe Fillot (cf@utc.fr)
4     *
5     * S-box functions.
6     */
7    
8     #ifndef __SBOX_H__
9     #define __SBOX_H__
10    
11     #include <sys/types.h>
12     #include "utils.h"
13    
14     extern m_uint32_t sbox_array[];
15    
16     static inline m_uint32_t sbox_compute(m_uint8_t *data,int len)
17     {
18     m_uint32_t hash = 0;
19    
20     while(len > 0) {
21     hash ^= sbox_array[*data];
22     hash *= 3;
23     data++;
24     }
25    
26     return(hash);
27     }
28    
29     static forced_inline m_uint32_t sbox_u32(m_uint32_t val)
30     {
31     m_uint32_t hash = 0;
32    
33     hash ^= sbox_array[(m_uint8_t)val];
34     hash *= 3;
35     val >>= 8;
36    
37     hash ^= sbox_array[(m_uint8_t)val];
38     hash *= 3;
39     val >>= 8;
40    
41     hash ^= sbox_array[(m_uint8_t)val];
42     hash *= 3;
43     val >>= 8;
44    
45     hash ^= sbox_array[(m_uint8_t)val];
46     return(hash);
47     }
48    
49     #endif

  ViewVC Help
Powered by ViewVC 1.1.26