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fix bug in pskdemod return value if no samples...
[proxmark3-svn] / client / cmdhfepa.c
1 //-----------------------------------------------------------------------------
2 // Copyright (C) 2012 Frederik Möllers
3 //
4 // This code is licensed to you under the terms of the GNU GPL, version 2 or,
5 // at your option, any later version. See the LICENSE.txt file for the text of
6 // the license.
7 //-----------------------------------------------------------------------------
8 // Commands related to the German electronic Identification Card
9 //-----------------------------------------------------------------------------
10
11 #include "util.h"
12 //#include "proxusb.h"
13 #include "proxmark3.h"
14 #include "ui.h"
15 #include "cmdparser.h"
16 #include "common.h"
17 #include "cmdmain.h"
18 #include "sleep.h"
19 #include "cmdhfepa.h"
20
21 static int CmdHelp(const char *Cmd);
22
23 // Perform (part of) the PACE protocol
24 int CmdHFEPACollectPACENonces(const char *Cmd)
25 {
26 // requested nonce size
27 unsigned int m = 0;
28 // requested number of Nonces
29 unsigned int n = 0;
30 // delay between requests
31 unsigned int d = 0;
32
33 sscanf(Cmd, "%u %u %u", &m, &n, &d);
34
35 // values are expected to be > 0
36 m = m > 0 ? m : 1;
37 n = n > 0 ? n : 1;
38
39 PrintAndLog("Collecting %u %"hhu"-byte nonces", n, m);
40 PrintAndLog("Start: %u", time(NULL));
41 // repeat n times
42 for (unsigned int i = 0; i < n; i++) {
43 // execute PACE
44 UsbCommand c = {CMD_EPA_PACE_COLLECT_NONCE, {(int)m, 0, 0}};
45 SendCommand(&c);
46 UsbCommand resp;
47
48 WaitForResponse(CMD_ACK,&resp);
49
50 // check if command failed
51 if (resp.arg[0] != 0) {
52 PrintAndLog("Error in step %d, Return code: %d",resp.arg[0],(int)resp.arg[1]);
53 } else {
54 size_t nonce_length = resp.arg[1];
55 char *nonce = (char *) malloc(2 * nonce_length + 1);
56 for(int j = 0; j < nonce_length; j++) {
57 sprintf(nonce + (2 * j), "%02X", resp.d.asBytes[j]);
58 }
59 // print nonce
60 PrintAndLog("Length: %d, Nonce: %s", nonce_length, nonce);
61 }
62 if (i < n - 1) {
63 sleep(d);
64 }
65 }
66 PrintAndLog("End: %u", time(NULL));
67
68 return 1;
69 }
70
71 // UI-related stuff
72
73 static const command_t CommandTable[] =
74 {
75 {"help", CmdHelp, 1, "This help"},
76 {"cnonces", CmdHFEPACollectPACENonces, 0,
77 "<m> <n> <d> Acquire n>0 encrypted PACE nonces of size m>0 with d sec pauses"},
78 {NULL, NULL, 0, NULL}
79 };
80
81 int CmdHelp(const char *Cmd)
82 {
83 CmdsHelp(CommandTable);
84 return 0;
85 }
86
87 int CmdHFEPA(const char *Cmd)
88 {
89 // flush
90 WaitForResponseTimeout(CMD_ACK,NULL,100);
91
92 // parse
93 CmdsParse(CommandTable, Cmd);
94 return 0;
95 }
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