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
|
/*
* This file is part of the TrinityCore Project. See AUTHORS file for Copyright information
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along
* with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "ARC4.h"
#include "Errors.h"
#if OPENSSL_VERSION_NUMBER >= 0x30000000L
#include <openssl/provider.h>
#endif
Trinity::Crypto::ARC4::ARC4() : _ctx(EVP_CIPHER_CTX_new())
{
EVP_CIPHER const* cipher;
#if OPENSSL_VERSION_NUMBER >= 0x30000000L
_libCtx = OSSL_LIB_CTX_new();
_legacyProvider = OSSL_PROVIDER_load(_libCtx, "legacy");
cipher = EVP_CIPHER_fetch(_libCtx, "RC4", "");
#else
cipher = EVP_rc4();
#endif
EVP_CIPHER_CTX_init(_ctx);
int result = EVP_EncryptInit_ex(_ctx, cipher, nullptr, nullptr, nullptr);
ASSERT(result == 1);
}
Trinity::Crypto::ARC4::~ARC4()
{
EVP_CIPHER_CTX_free(_ctx);
#if OPENSSL_VERSION_NUMBER >= 0x30000000L
OSSL_PROVIDER_unload(_legacyProvider);
OSSL_LIB_CTX_free(_libCtx);
#endif
}
void Trinity::Crypto::ARC4::Init(uint8 const* seed, size_t len)
{
int result1 = EVP_CIPHER_CTX_set_key_length(_ctx, len);
ASSERT(result1 == 1);
int result2 = EVP_EncryptInit_ex(_ctx, nullptr, nullptr, seed, nullptr);
ASSERT(result2 == 1);
}
void Trinity::Crypto::ARC4::UpdateData(uint8* data, size_t len)
{
int outlen = 0;
int result1 = EVP_EncryptUpdate(_ctx, data, &outlen, data, len);
ASSERT(result1 == 1);
int result2 = EVP_EncryptFinal_ex(_ctx, data, &outlen);
ASSERT(result2 == 1);
}
|
