1. small bugfix in hf 14a mifare
[proxmark3-svn] / client / util.c
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1//-----------------------------------------------------------------------------
2// Copyright (C) 2010 iZsh <izsh at fail0verflow.com>
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// utilities
9//-----------------------------------------------------------------------------
10
11#include "util.h"
534983d7 12
13void print_hex(const uint8_t * data, const size_t len)
14{
15 size_t i;
16
17 for (i=0; i < len; i++)
18 printf("%02x ", data[i]);
19
20 printf("\n");
21}
22
23char * sprint_hex(const uint8_t * data, const size_t len) {
24 static char buf[1024];
25 char * tmp = buf;
26 size_t i;
27
28 for (i=0; i < len && i < 1024/3; i++, tmp += 3)
29 sprintf(tmp, "%02x ", data[i]);
30
31 return buf;
32}
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33
34void num_to_bytes(uint64_t n, size_t len, uint8_t* dest)
35{
36 while (len--) {
37 dest[len] = (uint8_t) n;
38 n >>= 8;
39 }
40}
41
42uint64_t bytes_to_num(uint8_t* src, size_t len)
43{
44 uint64_t num = 0;
45 while (len--)
46 {
47 num = (num << 8) | (*src);
48 src++;
49 }
50 return num;
51}
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