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annotate rvinterf/etmsync/pirimei.c @ 1017:759b3cbf46aa

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doc/TCH-special-feature: document written
author Mychaela Falconia <falcon@ivan.Harhan.ORG>
date Mon, 21 Mar 2016 06:05:57 +0000
parents 9b4b0fcddc77
children
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1 /*
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2 * Reading and decryption of Pirelli's factory IMEI record
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3 */
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4
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5 #include <sys/types.h>
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6 #include <openssl/des.h>
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7 #include <stdio.h>
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8 #include <stdlib.h>
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9 #include <string.h>
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10 #include <strings.h>
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11 #include "exitcodes.h"
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12
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13 u_char pirelli_imeisv[8];
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14
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15 get_pirelli_imei()
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16 {
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17 DES_cblock ciphertext[2], dieid_key, decrypted[2];
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18 DES_key_schedule keysched;
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19 int rc;
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20 static char failmsg[] =
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21 "decryption failed: no valid IMEI record or incompatible firmware\n";
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22
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23 printf("Requesting Calypso die ID\n");
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24 rc = do_dieid_read(dieid_key);
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25 if (rc)
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26 return(rc);
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27 printf("Reading IMEI record in Pirelli's factory data block\n");
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28 rc = do_memory_read(0x027F0504, ciphertext, 16);
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29 if (rc)
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30 return(rc);
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31 DES_set_key_unchecked(&dieid_key, &keysched);
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32 DES_ecb_encrypt(&ciphertext[0], &decrypted[0], &keysched, DES_DECRYPT);
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33 DES_ecb_encrypt(&ciphertext[1], &decrypted[1], &keysched, DES_DECRYPT);
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34 if (bcmp(decrypted[1], dieid_key, 8)) {
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35 printf(failmsg);
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36 return(ERROR_TARGET);
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37 }
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38 bcopy(decrypted[0], pirelli_imeisv, 8);
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39 printf("Factory IMEISV is %02X%02X%02X%02X-%02X%02X%02X-%02X\n",
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40 pirelli_imeisv[0], pirelli_imeisv[1], pirelli_imeisv[2],
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41 pirelli_imeisv[3], pirelli_imeisv[4], pirelli_imeisv[5],
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42 pirelli_imeisv[6], pirelli_imeisv[7]);
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43 return(0);
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44 }