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
|
/*
* (C) 2016 Jack Lloyd
*
* Botan is released under the Simplified BSD License (see license.txt)
*/
#define BOTAN_NO_DEPRECATED_WARNINGS
#include "tests.h"
#if defined(BOTAN_HAS_DL_GROUP)
#include <botan/dl_group.h>
#include <botan/workfactor.h>
#endif
namespace Botan_Tests {
#if defined(BOTAN_HAS_DL_GROUP)
namespace {
class DL_Group_Tests final : public Test
{
public:
std::vector<Test::Result> run() override
{
std::vector<Test::Result> results;
Botan::RandomNumberGenerator& rng = Test::rng();
results.push_back(test_dl_encoding());
results.push_back(test_dl_named(rng));
results.push_back(test_dl_generate(rng));
results.push_back(test_dl_errors());
return results;
}
private:
Test::Result test_dl_errors()
{
Test::Result result("DL_Group errors");
result.test_throws("Uninitialized",
"DL_Group uninitialized",
[]() { Botan::DL_Group dl; dl.get_p(); });
if(Test::options().undefined_behavior_allowed())
{
result.test_throws("Bad generator param",
"DL_Group unknown PrimeType",
[]() {
auto invalid_type = static_cast<Botan::DL_Group::PrimeType>(9);
Botan::DL_Group dl(Test::rng(), invalid_type, 1024);
});
}
return result;
}
Test::Result test_dl_encoding()
{
Test::Result result("DL_Group encoding");
const Botan::DL_Group orig("modp/ietf/1024");
const std::string pem1 = orig.PEM_encode(Botan::DL_Group::ANSI_X9_42);
const std::string pem2 = orig.PEM_encode(Botan::DL_Group::ANSI_X9_57);
const std::string pem3 = orig.PEM_encode(Botan::DL_Group::PKCS_3);
Botan::DL_Group group1(pem1);
result.test_eq("Same p in X9.42 decoding", group1.get_p(), orig.get_p());
result.test_eq("Same q in X9.42 decoding", group1.get_q(), orig.get_q());
result.test_eq("Same g in X9.42 decoding", group1.get_g(), orig.get_g());
result.test_eq("PEM encodings match",
group1.PEM_encode(Botan::DL_Group::ANSI_X9_42),
Botan::DL_Group::PEM_for_named_group("modp/ietf/1024"));
Botan::DL_Group group2(pem2);
result.test_eq("Same p in X9.57 decoding", group2.get_p(), orig.get_p());
result.test_eq("Same q in X9.57 decoding", group2.get_q(), orig.get_q());
result.test_eq("Same g in X9.57 decoding", group2.get_g(), orig.get_g());
Botan::DL_Group group3(pem3);
result.test_eq("Same p in X9.57 decoding", group3.get_p(), orig.get_p());
// no q in PKCS #3 format
result.test_eq("Same g in X9.57 decoding", group3.get_g(), orig.get_g());
return result;
}
Test::Result test_dl_generate(Botan::RandomNumberGenerator& rng)
{
Test::Result result("DL_Group generate");
result.start_timer();
Botan::DL_Group dh1050(rng, Botan::DL_Group::Prime_Subgroup, 1050, 175);
result.test_eq("DH p size", dh1050.get_p().bits(), 1050);
result.test_eq("DH q size", dh1050.get_q().bits(), 175);
result.test_lte("DH g size", dh1050.get_g().bits(), 1050);
result.test_eq("DH group verifies", dh1050.verify_group(rng, true), true);
Botan::DL_Group dh_implicit_q(rng, Botan::DL_Group::Prime_Subgroup, 1040);
result.test_eq("DH p size", dh_implicit_q.get_p().bits(), 1040);
result.test_eq("DH q size", dh_implicit_q.get_q().bits(), Botan::dl_exponent_size(1040));
result.test_eq("DH group verifies", dh_implicit_q.verify_group(rng, true), true);
if(Test::run_long_tests())
{
Botan::DL_Group dh_strong(rng, Botan::DL_Group::Strong, 1025);
result.test_eq("DH p size", dh_strong.get_p().bits(), 1025);
result.test_eq("DH q size", dh_strong.get_q().bits(), 1024);
result.test_eq("DH group verifies", dh_strong.verify_group(rng, true), true);
}
#if defined(BOTAN_HAS_SHA1)
Botan::DL_Group dsa1024(rng, Botan::DL_Group::DSA_Kosherizer, 1024);
result.test_eq("DSA p size", dsa1024.get_p().bits(), 1024);
result.test_eq("DSA q size", dsa1024.get_q().bits(), 160);
result.test_lte("DSA g size", dsa1024.get_g().bits(), 1024);
result.test_eq("DSA group verifies", dsa1024.verify_group(rng, true), true);
const std::vector<uint8_t> short_seed(16);
const std::vector<uint8_t> invalid_seed(20);
const std::vector<uint8_t> working_seed = Botan::hex_decode("0000000000000000000000000000000000000021");
result.test_throws("DSA seed does not generate group",
"DL_Group: The seed given does not generate a DSA group",
[&rng,&invalid_seed]() { Botan::DL_Group dsa(rng, invalid_seed, 1024, 160); });
result.test_throws("DSA seed is too short",
"Generating a DSA parameter set with a 160 bit long q requires a seed at least as many bits long",
[&rng,&short_seed]() { Botan::DL_Group dsa(rng, short_seed, 1024, 160); });
// From FIPS 186-3 test data
const std::vector<uint8_t> seed = Botan::hex_decode("1F5DA0AF598EEADEE6E6665BF880E63D8B609BA2");
result.test_throws("invalid params", [&]() { Botan::DL_Group invalid(rng, seed, 1024, 224); });
result.test_throws("invalid params", [&]() { Botan::DL_Group invalid(rng, seed, 3072, 224); });
result.test_throws("invalid params", [&]() { Botan::DL_Group invalid(rng, seed, 2048, 256); });
Botan::DL_Group dsa_from_seed(rng, seed, 1024, 160);
result.test_eq("DSA q from seed", dsa_from_seed.get_q(),
Botan::BigInt("0xAB1A788BCE3C557A965A5BFA6908FAA665FDEB7D"));
// Modulo just to avoid embedding entire 1024-bit P in src file
result.test_eq("DSA p from seed", static_cast<size_t>(dsa_from_seed.get_p() % 4294967291), size_t(2513712339));
result.test_eq("DSA group from seed verifies", dsa_from_seed.verify_group(rng, true), true);
#endif
result.end_timer();
return result;
}
Test::Result test_dl_named(Botan::RandomNumberGenerator& rng)
{
const std::vector<std::string> dl_named =
{
"modp/ietf/1024",
"modp/ietf/1536",
"modp/ietf/2048",
"modp/ietf/3072",
"modp/ietf/4096",
"modp/ietf/6144",
"modp/ietf/8192",
"modp/srp/1024",
"modp/srp/1536",
"modp/srp/2048",
"modp/srp/3072",
"modp/srp/4096",
"modp/srp/6144",
"modp/srp/8192",
"dsa/jce/1024",
"dsa/botan/2048",
"dsa/botan/3072",
"ffdhe/ietf/2048",
"ffdhe/ietf/3072",
"ffdhe/ietf/4096",
"ffdhe/ietf/6144",
"ffdhe/ietf/8192",
};
Test::Result result("DL_Group named");
result.start_timer();
for(std::string name : dl_named)
{
// Confirm we can load every group we expect
Botan::DL_Group group(name);
result.test_ne("DL_Group p is set", group.get_p(), 0);
result.test_ne("DL_Group g is set", group.get_g(), 0);
const size_t strength = group.estimated_strength();
// 8192 bit ~~ 2**202 strength
result.confirm("Plausible strength", strength >= 80 && strength < 210);
if(name.find("modp/srp/") == std::string::npos)
{
result.test_ne("DL_Group q is set", group.get_q(), 0);
}
else
{
result.test_eq("DL_Group q is not set for SRP groups", group.get_q(), 0);
}
if(group.p_bits() < 2048 || Test::run_long_tests())
{
result.test_eq(name + " verifies", group.verify_group(rng, false), true);
}
}
result.end_timer();
return result;
}
};
BOTAN_REGISTER_TEST("dl_group", DL_Group_Tests);
}
#endif
}
|
