28 const unsigned char *key,
size_t keylen)
33 for (ind = 0; ind < 256; ind++)
35 arc4_state_out[ind] = (
unsigned char) ind;
38 for (ind = 0; ind < 256; ind++)
42 j += (arc4_state_out[ind] + key[ind % keylen]);
44 tc = arc4_state_out[ind];
45 arc4_state_out[ind] = arc4_state_out[j];
46 arc4_state_out[j] = tc;
48 arc4_state_out[256] = 0;
49 arc4_state_out[257] = 0;
59 unsigned char *data,
size_t len)
61 unsigned char index_i = arc4_state_inout[256];
62 unsigned char index_j = arc4_state_inout[257];
65 for (ind = 0; ind < len; ind++)
71 index_j += arc4_state_inout[index_i];
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;
77 t = arc4_state_inout[index_i] + arc4_state_inout[index_j];
78 data[ind] = data[ind] ^ arc4_state_inout[t];
81 arc4_state_inout[256] = index_i;
82 arc4_state_inout[257] = index_j;
void smb_arc4_crypt_ntlmssp(unsigned char arc4_state_inout[258], unsigned char *data, size_t len)
void smb_arc4_init_ntlmssp(unsigned char arc4_state_out[258], const unsigned char *key, size_t keylen)