1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
|
#include <string>
#include <vector>
#include <string.h>
#include "encrypt_stream.h"
#include "encrypt_stream_3des.h"
#include "utils.h"
encrypt_stream_3des::encrypt_stream_3des()
{
enc = NULL;
dec = NULL;
}
encrypt_stream_3des::~encrypt_stream_3des()
{
delete enc;
delete dec;
}
int encrypt_stream_3des::get_ivec_size()
{
return CryptoPP::DES_EDE3::BLOCKSIZE;
}
int encrypt_stream_3des::get_key_size()
{
return CryptoPP::DES_EDE3::DEFAULT_KEYLENGTH;
}
bool encrypt_stream_3des::init(unsigned char *key_in, int key_len, unsigned char *ivec_in, bool force)
{
my_assert(key_len > 0);
#ifdef CRYPTO_DEBUG
printf("KEY: "); hexdump(key_in, key_len);
printf("IVEC STRT: "); hexdump(ivec_in, 8);
#endif
if (enc)
delete enc;
if (dec)
delete dec;
unsigned char dummy[24] = { 0 };
memcpy(dummy, key_in, std::min(int(sizeof dummy), key_len));
enc = new CryptoPP::CFB_Mode<CryptoPP::DES_EDE3>::Encryption(dummy, sizeof dummy, ivec_in);
dec = new CryptoPP::CFB_Mode<CryptoPP::DES_EDE3>::Decryption(dummy, sizeof dummy, ivec_in);
return true;
}
std::string encrypt_stream_3des::get_name()
{
return "3des";
}
void encrypt_stream_3des::encrypt(unsigned char *p, int len, unsigned char *p_out)
{
my_assert(len > 0);
#ifdef CRYPTO_DEBUG
printf("ORG: "); hexdump(p, len);
printf("EIV %d before: ", ivec_offset); hexdump(ivec, 8);
#endif
enc -> ProcessData(p_out, p, len);
#ifdef CRYPTO_DEBUG
printf("EIV %d after: ", ivec_offset); hexdump(ivec, 8);
printf("ENC: "); hexdump(p_out, len);
#endif
}
void encrypt_stream_3des::decrypt(unsigned char *p, int len, unsigned char *p_out)
{
my_assert(len > 0);
#ifdef CRYPTO_DEBUG
printf("DEC: "); hexdump(p, len);
printf("EIV %d before: ", ivec_offset); hexdump(ivec, 8);
#endif
dec -> ProcessData(p_out, p, len);
#ifdef CRYPTO_DEBUG
printf("EIV %d after: ", ivec_offset); hexdump(ivec, 8);
printf("ORG: "); hexdump(p_out, len);
#endif
}
|
