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
|
/*
* (C) 2014,2015,2016 Jack Lloyd
*
* Botan is released under the Simplified BSD License (see license.txt)
*/
#include "tests.h"
#if defined(BOTAN_HAS_STREAM_CIPHER)
#include <botan/stream_cipher.h>
#endif
namespace Botan_Tests {
#if defined(BOTAN_HAS_STREAM_CIPHER)
class Stream_Cipher_Tests final : public Text_Based_Test
{
public:
Stream_Cipher_Tests(): Text_Based_Test("stream", "Key,Out", "In,Nonce,Seek") {}
Test::Result run_one_test(const std::string& algo, const VarMap& vars) override
{
const std::vector<uint8_t> key = vars.get_req_bin("Key");
const std::vector<uint8_t> expected = vars.get_req_bin("Out");
const std::vector<uint8_t> nonce = vars.get_opt_bin("Nonce");
const uint64_t seek = vars.get_opt_u64("Seek", 0);
std::vector<uint8_t> input = vars.get_opt_bin("In");
if(input.empty())
{
input.resize(expected.size());
}
Test::Result result(algo);
const std::vector<std::string> providers =
provider_filter(Botan::StreamCipher::providers(algo));
if(providers.empty())
{
result.note_missing("stream cipher " + algo);
return result;
}
for(auto const& provider_ask : providers)
{
std::unique_ptr<Botan::StreamCipher> cipher(Botan::StreamCipher::create(algo, provider_ask));
if(!cipher)
{
result.test_failure("Stream " + algo + " supported by " + provider_ask + " but not found");
continue;
}
const std::string provider(cipher->provider());
result.test_is_nonempty("provider", provider);
result.test_eq(provider, cipher->name(), algo);
result.confirm("default iv length is valid", cipher->valid_iv_length(cipher->default_iv_length()));
if(cipher->default_iv_length() == 0)
{
result.confirm("if default iv length is zero, no iv supported", nonce.size() == 0);
// This should still succeed
cipher->set_iv(nullptr, 0);
}
try
{
std::vector<uint8_t> buf(128);
cipher->cipher1(buf.data(), buf.size());
result.test_failure("Was able to encrypt without a key being set");
}
catch(Botan::Invalid_State&)
{
result.test_success("Trying to encrypt with no key set fails");
}
try
{
cipher->seek(0);
result.test_failure("Was able to seek without a key being set");
}
catch(Botan::Invalid_State&)
{
result.test_success("Trying to seek with no key set fails");
}
catch(Botan::Not_Implemented&)
{
result.test_success("Trying to seek failed because not implemented");
}
if(!cipher->valid_iv_length(nonce.size()))
{
throw Test_Error("Invalid nonce for " + algo);
}
bool accepted_nonce_early = false;
if(nonce.size() > 0)
{
try
{
cipher->set_iv(nonce.data(), nonce.size());
accepted_nonce_early = true;
}
catch(Botan::Invalid_State&) {}
}
/*
* Different providers may have additional restrictions on key sizes.
* Avoid testing the cipher with a key size that it does not natively support.
*/
if(!cipher->valid_keylength(key.size()))
{
result.test_note("Skipping test with provider " + provider +
" as it does not support key length " + std::to_string(key.size()));
continue;
}
cipher->set_key(key);
/*
Test invalid nonce sizes. this assumes no implemented cipher supports a nonce of 65000
*/
const size_t large_nonce_size = 65000;
result.confirm("Stream cipher does not support very large nonce", cipher->valid_iv_length(large_nonce_size) == false);
result.test_throws("Throws if invalid nonce size given",
[&]() { cipher->set_iv(nullptr, large_nonce_size); });
/*
If the set_nonce call earlier succeded, then we require that it also
worked (ie saved the nonce for later use) even though the key was
not set. So, don't set the nonce now, to ensure the previous call
had an effect.
*/
if(nonce.size() > 0 && accepted_nonce_early == false)
{
cipher->set_iv(nonce.data(), nonce.size());
}
if(seek != 0)
{
cipher->seek(seek);
}
// Test that clone works and does not affect parent object
std::unique_ptr<Botan::StreamCipher> clone(cipher->clone());
result.confirm("Clone has different pointer", cipher.get() != clone.get());
result.test_eq("Clone has same name", cipher->name(), clone->name());
clone->set_key(Test::rng().random_vec(cipher->maximum_keylength()));
{
std::vector<uint8_t> buf = input;
cipher->encrypt(buf);
result.test_eq(provider, "encrypt", buf, expected);
}
if(nonce.size() > 0)
{
std::vector<uint8_t> buf = input;
cipher->set_iv(nonce.data(), nonce.size());
if(seek != 0)
cipher->seek(seek);
cipher->encrypt(buf);
result.test_eq(provider, "second encrypt", buf, expected);
}
cipher->clear();
try
{
std::vector<uint8_t> buf(128);
cipher->cipher1(buf.data(), buf.size());
result.test_failure("Was able to encrypt without a key being set (after clear)");
}
catch(Botan::Invalid_State&)
{
result.test_success("Trying to encrypt with no key set (after clear) fails");
}
}
return result;
}
};
BOTAN_REGISTER_TEST("stream", "stream", Stream_Cipher_Tests);
#endif
}
|
