OpenVAS Scanner  7.0.0~git
arc4.c File Reference
#include <stdlib.h>
Include dependency graph for arc4.c:

Go to the source code of this file.

Functions

void smb_arc4_init_ntlmssp (unsigned char arc4_state_out[258], const unsigned char *key, size_t keylen)
 
void smb_arc4_crypt_ntlmssp (unsigned char arc4_state_inout[258], unsigned char *data, size_t len)
 

Function Documentation

◆ smb_arc4_crypt_ntlmssp()

void smb_arc4_crypt_ntlmssp ( unsigned char  arc4_state_inout[258],
unsigned char *  data,
size_t  len 
)

Definition at line 58 of file arc4.c.

60 {
61  unsigned char index_i = arc4_state_inout[256];
62  unsigned char index_j = arc4_state_inout[257];
63  size_t ind;
64 
65  for (ind = 0; ind < len; ind++)
66  {
67  unsigned char tc;
68  unsigned char t;
69 
70  index_i++;
71  index_j += arc4_state_inout[index_i];
72 
73  tc = arc4_state_inout[index_i];
74  arc4_state_inout[index_i] = arc4_state_inout[index_j];
75  arc4_state_inout[index_j] = tc;
76 
77  t = arc4_state_inout[index_i] + arc4_state_inout[index_j];
78  data[ind] = data[ind] ^ arc4_state_inout[t];
79  }
80 
81  arc4_state_inout[256] = index_i;
82  arc4_state_inout[257] = index_j;
83 }

Referenced by generate_random_buffer_ntlmssp().

Here is the caller graph for this function:

◆ smb_arc4_init_ntlmssp()

void smb_arc4_init_ntlmssp ( unsigned char  arc4_state_out[258],
const unsigned char *  key,
size_t  keylen 
)

Definition at line 27 of file arc4.c.

29 {
30  size_t ind;
31  unsigned char j = 0;
32 
33  for (ind = 0; ind < 256; ind++)
34  {
35  arc4_state_out[ind] = (unsigned char) ind;
36  }
37 
38  for (ind = 0; ind < 256; ind++)
39  {
40  unsigned char tc;
41 
42  j += (arc4_state_out[ind] + key[ind % keylen]);
43 
44  tc = arc4_state_out[ind];
45  arc4_state_out[ind] = arc4_state_out[j];
46  arc4_state_out[j] = tc;
47  }
48  arc4_state_out[256] = 0;
49  arc4_state_out[257] = 0;
50 }

Referenced by do_reseed_ntlmssp().

Here is the caller graph for this function: