FreeCalypso > hg > freecalypso-tools

comparison rvinterf/etmsync/pirimei.c @ 0:e7502631a0f9

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initial import from freecalypso-sw rev 1033:5ab737ac3ad7
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 11 Jun 2016 00:13:35 +0000
parents
children 3d148edb87c2
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-1:000000000000 0:e7502631a0f9
1 /*
2 * Reading and decryption of Pirelli's factory IMEI record
3 */
4
5 #include <sys/types.h>
6 #include <openssl/des.h>
7 #include <stdio.h>
8 #include <stdlib.h>
9 #include <string.h>
10 #include <strings.h>
11 #include "exitcodes.h"
12
13 u_char pirelli_imeisv[8];
14
15 get_pirelli_imei()
16 {
17 DES_cblock ciphertext[2], dieid_key, decrypted[2];
18 DES_key_schedule keysched;
19 int rc;
20 static char failmsg[] =
21 "decryption failed: no valid IMEI record or incompatible firmware\n";
22
23 printf("Requesting Calypso die ID\n");
24 rc = do_dieid_read(dieid_key);
25 if (rc)
26 return(rc);
27 printf("Reading IMEI record in Pirelli's factory data block\n");
28 rc = do_memory_read(0x027F0504, ciphertext, 16);
29 if (rc)
30 return(rc);
31 DES_set_key_unchecked(&dieid_key, &keysched);
32 DES_ecb_encrypt(&ciphertext[0], &decrypted[0], &keysched, DES_DECRYPT);
33 DES_ecb_encrypt(&ciphertext[1], &decrypted[1], &keysched, DES_DECRYPT);
34 if (bcmp(decrypted[1], dieid_key, 8)) {
35 printf(failmsg);
36 return(ERROR_TARGET);
37 }
38 bcopy(decrypted[0], pirelli_imeisv, 8);
39 printf("Factory IMEISV is %02X%02X%02X%02X-%02X%02X%02X-%02X\n",
40 pirelli_imeisv[0], pirelli_imeisv[1], pirelli_imeisv[2],
41 pirelli_imeisv[3], pirelli_imeisv[4], pirelli_imeisv[5],
42 pirelli_imeisv[6], pirelli_imeisv[7]);
43 return(0);
44 }