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
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
|
/*
* InspIRCd -- Internet Relay Chat Daemon
*
* Copyright (C) 2025 Sadie Powell <sadie@witchery.services>
*
* This file is part of InspIRCd. InspIRCd 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, version 2.
*
* 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/>.
*/
/// $CompilerFlags: find_compiler_flags("gnutls")
/// $LinkerFlags: find_linker_flags("gnutls")
/// $PackageInfo: require_system("arch") gnutls pkgconf
/// $PackageInfo: require_system("darwin") gnutls pkg-config
/// $PackageInfo: require_system("debian~") libgnutls28-dev pkg-config
/// $PackageInfo: require_system("rhel~") gnutls-devel pkgconfig
#include <gnutls/gnutls.h>
#include <gnutls/crypto.h>
#include "inspircd.h"
#include "modules/hash.h"
namespace
{
template<typename Enum>
std::string GetAlgoName(Enum algo)
{
std::string name = gnutls_mac_get_name(static_cast<gnutls_mac_algorithm_t>(algo));
std::transform(name.begin(), name.end(), name.begin(), ::tolower);
return name;
}
}
class GnuTLSHMACContext final
: public Hash::Context
{
private:
gnutls_mac_algorithm_t algorithm;
gnutls_hmac_hd_t context;
std::vector<char> salt;
public:
GnuTLSHMACContext(gnutls_mac_algorithm_t algo)
: algorithm(algo)
, salt(gnutls_hmac_get_len(algo))
{
ServerInstance->GenRandom(salt.data(), salt.size());
gnutls_hmac_init(&context, algorithm, salt.data(), salt.size());
}
~GnuTLSHMACContext()
{
gnutls_hmac_deinit(context, nullptr);
}
void Update(const unsigned char *data, size_t len) override
{
gnutls_hmac(context, data, len);
}
std::string Finalize() override
{
std::vector<unsigned char> digest(gnutls_hmac_get_len(algorithm));
gnutls_hmac_output(context, digest.data());
return FMT::format("{}${}", Base64::Encode(salt.data(), salt.size()), Base64::Encode(digest.data(), digest.size()));
}
};
class GnuTLSHMACProvider final
: public Hash::Provider
{
private:
gnutls_mac_algorithm_t algorithm;
public:
GnuTLSHMACProvider(Module* mod, gnutls_mac_algorithm_t algo)
: Hash::Provider(mod, FMT::format("hmac-{}", GetAlgoName(algo)))
, algorithm(algo)
{
}
bool Compare(const std::string& hash, const std::string& plain) override
{
auto sep = hash.find('$');
if (sep == std::string::npos)
return false; // Malformed hash.
auto rawkey = Base64::Decode(hash.substr(0, sep));
auto rawhash = Base64::Decode(hash.substr(sep + 1));
std::vector<unsigned char> expectedbuf(gnutls_hmac_get_len(algorithm));
if (gnutls_hmac_fast(algorithm, rawkey.data(), rawkey.length(), plain.data(), plain.length(), expectedbuf.data()) < 0)
return false; // Hashing error.
const std::string expected(reinterpret_cast<const char *>(expectedbuf.data()), expectedbuf.size());
return InspIRCd::TimingSafeCompare(rawhash, expected);
}
std::unique_ptr<Hash::Context> CreateContext() override
{
return std::make_unique<GnuTLSHMACContext>(algorithm);
}
std::string ToPrintable(const std::string &hash) override
{
// We have no way to make this printable without the creating context
// so we always return the printed form.
return hash;
}
};
class GnuTLSContext final
: public Hash::Context
{
private:
gnutls_digest_algorithm_t algorithm;
gnutls_hash_hd_t context;
public:
GnuTLSContext(gnutls_digest_algorithm_t algo)
: algorithm(algo)
{
gnutls_hash_init(&context, algorithm);
}
~GnuTLSContext()
{
gnutls_hash_deinit(context, nullptr);
}
void Update(const unsigned char *data, size_t len) override
{
gnutls_hash(context, data, len);
}
std::string Finalize() override
{
std::vector<unsigned char> digest(gnutls_hash_get_len(algorithm));
gnutls_hash_output(context, digest.data());
return std::string(reinterpret_cast<const char *>(digest.data()), digest.size());
}
};
class GnuTLSProvider final
: public Hash::Provider
{
private:
gnutls_digest_algorithm_t algorithm;
GnuTLSHMACProvider hmacalgo;
public:
GnuTLSProvider(Module* mod, gnutls_digest_algorithm_t algo, size_t bs)
: Hash::Provider(mod, GetAlgoName(algo), gnutls_hash_get_len(algo), bs)
, algorithm(algo)
, hmacalgo(mod, static_cast<gnutls_mac_algorithm_t>(algo))
{
}
std::unique_ptr<Hash::Context> CreateContext() override
{
return std::make_unique<GnuTLSContext>(algorithm);
}
bool IsPasswordSafe() const override
{
// Plain hashes are not safe for password use as they can be decoded via
// the use of a rainbow table. You should use a HMAC hash instead as
// they are not vulnerable to this attack.
return false;
}
};
class ModuleHashGnuTLS final
: public Module
{
private:
GnuTLSProvider sha1algo;
GnuTLSProvider sha224algo;
GnuTLSProvider sha256algo;
GnuTLSProvider sha384algo;
GnuTLSProvider sha512algo;
GnuTLSProvider sha3224algo;
GnuTLSProvider sha3256algo;
GnuTLSProvider sha3384algo;
GnuTLSProvider sha3512algo;
public:
ModuleHashGnuTLS()
: Module(VF_VENDOR, "Allows other modules to generate hashes using GnuTLS.")
, sha1algo(this, GNUTLS_DIG_SHA1, 64)
, sha224algo(this, GNUTLS_DIG_SHA224, 64)
, sha256algo(this, GNUTLS_DIG_SHA256, 64)
, sha384algo(this, GNUTLS_DIG_SHA384, 128)
, sha512algo(this, GNUTLS_DIG_SHA512, 128)
, sha3224algo(this, GNUTLS_DIG_SHA3_224, 144)
, sha3256algo(this, GNUTLS_DIG_SHA3_256, 136)
, sha3384algo(this, GNUTLS_DIG_SHA3_384, 104)
, sha3512algo(this, GNUTLS_DIG_SHA3_512, 72)
{
gnutls_global_init();
}
~ModuleHashGnuTLS()
{
gnutls_global_deinit();
}
void init() override
{
sha1algo.Check({
{ "da39a3ee5e6b4b0d3255bfef95601890afd80709", "" },
{ "2fd4e1c67a2d28fced849ee1bb76e7391b93eb12", "The quick brown fox jumps over the lazy dog" },
});
sha224algo.Check({
{ "d14a028c2a3a2bc9476102bb288234c415a2b01f828ea62ac5b3e42f", "" },
{ "730e109bd7a8a32b1cb9d9a09aa2325d2430587ddbc0c38bad911525", "The quick brown fox jumps over the lazy dog" },
});
sha256algo.Check({
{ "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855", "" },
{ "d7a8fbb307d7809469ca9abcb0082e4f8d5651e46d3cdb762d02d0bf37c9e592", "The quick brown fox jumps over the lazy dog" },
});
sha384algo.Check({
{ "38b060a751ac96384cd9327eb1b1e36a21fdb71114be07434c0cc7bf63f6e1da274edebfe76f65fbd51ad2f14898b95b", "" },
{ "ca737f1014a48f4c0b6dd43cb177b0afd9e5169367544c494011e3317dbf9a509cb1e5dc1e85a941bbee3d7f2afbc9b1", "The quick brown fox jumps over the lazy dog" },
});
sha512algo.Check({
{ "cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e", "" },
{ "07e547d9586f6a73f73fbac0435ed76951218fb7d0c8d788a309d785436bbb642e93a252a954f23912547d1e8a3b5ed6e1bfd7097821233fa0538f3db854fee6", "The quick brown fox jumps over the lazy dog" },
});
sha3224algo.Check({
{ "6b4e03423667dbb73b6e15454f0eb1abd4597f9a1b078e3f5b5a6bc7", "" },
{ "d15dadceaa4d5d7bb3b48f446421d542e08ad8887305e28d58335795", "The quick brown fox jumps over the lazy dog" },
});
sha3256algo.Check({
{ "a7ffc6f8bf1ed76651c14756a061d662f580ff4de43b49fa82d80a4b80f8434a", "" },
{ "69070dda01975c8c120c3aada1b282394e7f032fa9cf32f4cb2259a0897dfc04", "The quick brown fox jumps over the lazy dog" },
});
sha3384algo.Check({
{ "0c63a75b845e4f7d01107d852e4c2485c51a50aaaa94fc61995e71bbee983a2ac3713831264adb47fb6bd1e058d5f004", "" },
{ "7063465e08a93bce31cd89d2e3ca8f602498696e253592ed26f07bf7e703cf328581e1471a7ba7ab119b1a9ebdf8be41", "The quick brown fox jumps over the lazy dog" },
});
sha3512algo.Check({
{ "a69f73cca23a9ac5c8b567dc185a756e97c982164fe25859e0d1dcc1475c80a615b2123af1f5f94c11e3e9402c3ac558f500199d95b6d3e301758586281dcd26", "" },
{ "01dedd5de4ef14642445ba5f5b97c15e47b9ad931326e4b0727cd94cefc44fff23f07bf543139939b49128caf436dc1bdee54fcb24023a08d9403f9b4bf0d450", "The quick brown fox jumps over the lazy dog" },
});
}
};
MODULE_INIT(ModuleHashGnuTLS)
|
