Nino Der Kinderen / Mbed 2 deprecated InetTest

Embedded C project:18/12/2014

Dependencies:   DS1307 TextLCD mbed

NetServices/services/mysql/mycrypt.c@0:8d87bc453349, 2014-12-18 (annotated)

Committer:
ninoderkinderen
Date:
Thu Dec 18 09:35:49 2014 +0000
Revision:
0:8d87bc453349
Programma embedded C

Who changed what in which revision?

UserRevisionLine numberNew contents of line
ninoderkinderen 0:8d87bc453349 1 /* Copyright (C) 2007 MySQL AB & Michael Widenius
ninoderkinderen 0:8d87bc453349 2
ninoderkinderen 0:8d87bc453349 3 This program is free software; you can redistribute it and/or modify
ninoderkinderen 0:8d87bc453349 4 it under the terms of the GNU General Public License as published by
ninoderkinderen 0:8d87bc453349 5 the Free Software Foundation; version 2 of the License.
ninoderkinderen 0:8d87bc453349 6
ninoderkinderen 0:8d87bc453349 7 This program is distributed in the hope that it will be useful,
ninoderkinderen 0:8d87bc453349 8 but WITHOUT ANY WARRANTY; without even the implied warranty of
ninoderkinderen 0:8d87bc453349 9 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
ninoderkinderen 0:8d87bc453349 10 GNU General Public License for more details.
ninoderkinderen 0:8d87bc453349 11
ninoderkinderen 0:8d87bc453349 12 You should have received a copy of the GNU General Public License
ninoderkinderen 0:8d87bc453349 13 along with this program; if not, write to the Free Software
ninoderkinderen 0:8d87bc453349 14 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
ninoderkinderen 0:8d87bc453349 15
ninoderkinderen 0:8d87bc453349 16 #define SCRAMBLE_LENGTH_323 8
ninoderkinderen 0:8d87bc453349 17
ninoderkinderen 0:8d87bc453349 18 #include <string.h>
ninoderkinderen 0:8d87bc453349 19 #include <math.h>
ninoderkinderen 0:8d87bc453349 20
ninoderkinderen 0:8d87bc453349 21 typedef unsigned int uint;
ninoderkinderen 0:8d87bc453349 22 typedef unsigned long ulong;
ninoderkinderen 0:8d87bc453349 23 typedef unsigned char uchar;
ninoderkinderen 0:8d87bc453349 24
ninoderkinderen 0:8d87bc453349 25 struct my_rnd_struct {
ninoderkinderen 0:8d87bc453349 26 unsigned long seed1,seed2,max_value;
ninoderkinderen 0:8d87bc453349 27 double max_value_dbl;
ninoderkinderen 0:8d87bc453349 28 };
ninoderkinderen 0:8d87bc453349 29
ninoderkinderen 0:8d87bc453349 30 static void my_rnd_init(struct my_rnd_struct *rand_st, ulong seed1, ulong seed2);
ninoderkinderen 0:8d87bc453349 31 static double my_rnd(struct my_rnd_struct *rand_st);
ninoderkinderen 0:8d87bc453349 32 static void hash_password(ulong *result, const char *password, uint password_len);
ninoderkinderen 0:8d87bc453349 33
ninoderkinderen 0:8d87bc453349 34 /*
ninoderkinderen 0:8d87bc453349 35 Initialize random generator
ninoderkinderen 0:8d87bc453349 36
ninoderkinderen 0:8d87bc453349 37 NOTES
ninoderkinderen 0:8d87bc453349 38 MySQL's password checks depends on this, so don't do any changes
ninoderkinderen 0:8d87bc453349 39 that changes the random numbers that are generated!
ninoderkinderen 0:8d87bc453349 40 */
ninoderkinderen 0:8d87bc453349 41
ninoderkinderen 0:8d87bc453349 42 static void my_rnd_init(struct my_rnd_struct *rand_st, ulong seed1, ulong seed2)
ninoderkinderen 0:8d87bc453349 43 {
ninoderkinderen 0:8d87bc453349 44 rand_st->max_value= 0x3FFFFFFFL;
ninoderkinderen 0:8d87bc453349 45 rand_st->max_value_dbl=(double) rand_st->max_value;
ninoderkinderen 0:8d87bc453349 46 rand_st->seed1=seed1%rand_st->max_value ;
ninoderkinderen 0:8d87bc453349 47 rand_st->seed2=seed2%rand_st->max_value;
ninoderkinderen 0:8d87bc453349 48 }
ninoderkinderen 0:8d87bc453349 49
ninoderkinderen 0:8d87bc453349 50 /*
ninoderkinderen 0:8d87bc453349 51 Generate random number.
ninoderkinderen 0:8d87bc453349 52
ninoderkinderen 0:8d87bc453349 53 SYNOPSIS
ninoderkinderen 0:8d87bc453349 54 my_rnd()
ninoderkinderen 0:8d87bc453349 55 rand_st INOUT Structure used for number generation
ninoderkinderen 0:8d87bc453349 56
ninoderkinderen 0:8d87bc453349 57 RETURN VALUE
ninoderkinderen 0:8d87bc453349 58 generated pseudo random number
ninoderkinderen 0:8d87bc453349 59 */
ninoderkinderen 0:8d87bc453349 60
ninoderkinderen 0:8d87bc453349 61 static double my_rnd(struct my_rnd_struct *rand_st)
ninoderkinderen 0:8d87bc453349 62 {
ninoderkinderen 0:8d87bc453349 63 rand_st->seed1=(rand_st->seed1*3+rand_st->seed2) % rand_st->max_value;
ninoderkinderen 0:8d87bc453349 64 rand_st->seed2=(rand_st->seed1+rand_st->seed2+33) % rand_st->max_value;
ninoderkinderen 0:8d87bc453349 65 return (((double) rand_st->seed1)/rand_st->max_value_dbl);
ninoderkinderen 0:8d87bc453349 66 }
ninoderkinderen 0:8d87bc453349 67
ninoderkinderen 0:8d87bc453349 68 /*
ninoderkinderen 0:8d87bc453349 69 Generate binary hash from raw text string
ninoderkinderen 0:8d87bc453349 70 Used for Pre-4.1 password handling
ninoderkinderen 0:8d87bc453349 71 SYNOPSIS
ninoderkinderen 0:8d87bc453349 72 hash_password()
ninoderkinderen 0:8d87bc453349 73 result OUT store hash in this location
ninoderkinderen 0:8d87bc453349 74 password IN plain text password to build hash
ninoderkinderen 0:8d87bc453349 75 password_len IN password length (password may be not null-terminated)
ninoderkinderen 0:8d87bc453349 76 */
ninoderkinderen 0:8d87bc453349 77
ninoderkinderen 0:8d87bc453349 78 static void hash_password(ulong *result, const char *password, uint password_len)
ninoderkinderen 0:8d87bc453349 79 {
ninoderkinderen 0:8d87bc453349 80 register ulong nr=1345345333L, add=7, nr2=0x12345671L;
ninoderkinderen 0:8d87bc453349 81 ulong tmp;
ninoderkinderen 0:8d87bc453349 82 const char *password_end= password + password_len;
ninoderkinderen 0:8d87bc453349 83 for (; password < password_end; password++)
ninoderkinderen 0:8d87bc453349 84 {
ninoderkinderen 0:8d87bc453349 85 if (*password == ' ' || *password == '\t')
ninoderkinderen 0:8d87bc453349 86 continue; /* skip space in password */
ninoderkinderen 0:8d87bc453349 87 tmp= (ulong) (uchar) *password;
ninoderkinderen 0:8d87bc453349 88 nr^= (((nr & 63)+add)*tmp)+ (nr << 8);
ninoderkinderen 0:8d87bc453349 89 nr2+=(nr2 << 8) ^ nr;
ninoderkinderen 0:8d87bc453349 90 add+=tmp;
ninoderkinderen 0:8d87bc453349 91 }
ninoderkinderen 0:8d87bc453349 92 result[0]=nr & (((ulong) 1L << 31) -1L); /* Don't use sign bit (str2int) */;
ninoderkinderen 0:8d87bc453349 93 result[1]=nr2 & (((ulong) 1L << 31) -1L);
ninoderkinderen 0:8d87bc453349 94 }
ninoderkinderen 0:8d87bc453349 95
ninoderkinderen 0:8d87bc453349 96
ninoderkinderen 0:8d87bc453349 97
ninoderkinderen 0:8d87bc453349 98 /*
ninoderkinderen 0:8d87bc453349 99 Scramble string with password.
ninoderkinderen 0:8d87bc453349 100 Used in pre 4.1 authentication phase.
ninoderkinderen 0:8d87bc453349 101 SYNOPSIS
ninoderkinderen 0:8d87bc453349 102 scramble_323()
ninoderkinderen 0:8d87bc453349 103 to OUT Store scrambled message here. Buffer must be at least
ninoderkinderen 0:8d87bc453349 104 SCRAMBLE_LENGTH_323+1 bytes long
ninoderkinderen 0:8d87bc453349 105 message IN Message to scramble. Message must be at least
ninoderkinderen 0:8d87bc453349 106 SRAMBLE_LENGTH_323 bytes long.
ninoderkinderen 0:8d87bc453349 107 password IN Password to use while scrambling
ninoderkinderen 0:8d87bc453349 108 */
ninoderkinderen 0:8d87bc453349 109
ninoderkinderen 0:8d87bc453349 110 void scramble_323(char *to, const char *message, const char *password)
ninoderkinderen 0:8d87bc453349 111 {
ninoderkinderen 0:8d87bc453349 112 struct my_rnd_struct rand_st;
ninoderkinderen 0:8d87bc453349 113 ulong hash_pass[2], hash_message[2];
ninoderkinderen 0:8d87bc453349 114
ninoderkinderen 0:8d87bc453349 115 if (password && password[0])
ninoderkinderen 0:8d87bc453349 116 {
ninoderkinderen 0:8d87bc453349 117 char extra, *to_start=to;
ninoderkinderen 0:8d87bc453349 118 const char *message_end= message + SCRAMBLE_LENGTH_323;
ninoderkinderen 0:8d87bc453349 119 hash_password(hash_pass,password, (uint) strlen(password));
ninoderkinderen 0:8d87bc453349 120 hash_password(hash_message, message, SCRAMBLE_LENGTH_323);
ninoderkinderen 0:8d87bc453349 121 my_rnd_init(&rand_st,hash_pass[0] ^ hash_message[0],
ninoderkinderen 0:8d87bc453349 122 hash_pass[1] ^ hash_message[1]);
ninoderkinderen 0:8d87bc453349 123 for (; message < message_end; message++)
ninoderkinderen 0:8d87bc453349 124 *to++= (char) (floor(my_rnd(&rand_st)*31)+64);
ninoderkinderen 0:8d87bc453349 125 extra=(char) (floor(my_rnd(&rand_st)*31));
ninoderkinderen 0:8d87bc453349 126 while (to_start != to)
ninoderkinderen 0:8d87bc453349 127 *(to_start++)^=extra;
ninoderkinderen 0:8d87bc453349 128 }
ninoderkinderen 0:8d87bc453349 129 *to= 0;
ninoderkinderen 0:8d87bc453349 130 }
ninoderkinderen 0:8d87bc453349 131