change to VodafoneUSB Modem interface
Fork of MySQLClient by
LPC1768/services/mysql/encrypt.c
- Committer:
- loc_tran17
- Date:
- 2013-11-22
- Revision:
- 6:cb3bd3012d79
File content as of revision 6:cb3bd3012d79:
#include <stdio.h> #include <string.h> #include <math.h> #include "mycrypt.h" #define SCRAMBLE_LENGTH_323 8 typedef unsigned long ulong; typedef unsigned int uint; typedef unsigned char uchar; struct rand_struct { unsigned long seed1,seed2,max_value; double max_value_dbl; }; void hash_password(ulong *result, const char *password, uint password_len) { register ulong nr=1345345333L, add=7, nr2=0x12345671L; ulong tmp; const char *password_end= password + password_len; for (; password < password_end; password++) { if (*password == ' ' || *password == '\t') continue; /* skip space in password */ tmp= (ulong) (uchar) *password; nr^= (((nr & 63)+add)*tmp)+ (nr << 8); nr2+=(nr2 << 8) ^ nr; add+=tmp; } result[0]=nr & (((ulong) 1L << 31) -1L); /* Don't use sign bit (str2int) */; result[1]=nr2 & (((ulong) 1L << 31) -1L); } void randominit(struct rand_struct *rand_st, ulong seed1, ulong seed2) { /* For mysql 3.21.# */ #ifdef HAVE_purify bzero((char*) rand_st,sizeof(*rand_st)); /* Avoid UMC varnings */ #endif rand_st->max_value= 0x3FFFFFFFL; rand_st->max_value_dbl=(double) rand_st->max_value; rand_st->seed1=seed1%rand_st->max_value ; rand_st->seed2=seed2%rand_st->max_value; } double my_rnd(struct rand_struct *rand_st) { rand_st->seed1=(rand_st->seed1*3+rand_st->seed2) % rand_st->max_value; rand_st->seed2=(rand_st->seed1+rand_st->seed2+33) % rand_st->max_value; return (((double) rand_st->seed1)/rand_st->max_value_dbl); } void scramble_323(char *to, const char *message, const char *password) { struct rand_struct rand_st; ulong hash_pass[2], hash_message[2]; if (password && password[0]) { char extra, *to_start=to; const char *message_end= message + SCRAMBLE_LENGTH_323; hash_password(hash_pass,password, (uint) strlen(password)); hash_password(hash_message, message, SCRAMBLE_LENGTH_323); randominit(&rand_st,hash_pass[0] ^ hash_message[0], hash_pass[1] ^ hash_message[1]); for (; message < message_end; message++) *to++= (char) (floor(my_rnd(&rand_st)*31)+64); extra=(char) (floor(my_rnd(&rand_st)*31)); while (to_start != to) *(to_start++)^=extra; } *to= 0; }