16395825001

Committed 19 Jul 2025 11:30PM UTC coverage: 90.635% (-0.07%) from 90.708%

Build # 16395825001

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web-flow

Commit Message

Merge pull request #4998 from randombit/jack/fix-clang-tidy-readability-isolate-declaration

Enable and fix clang-tidy warning readability-isolate-declaration

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98.54

/src/cli/perf_math.cpp

/*
* (C) 2024 Jack Lloyd
*
* Botan is released under the Simplified BSD License (see license.txt)
*/

#include "perf.h"

#if defined(BOTAN_HAS_BIGINT)
   #include <botan/assert.h>
   #include <botan/bigint.h>
   #include <botan/internal/divide.h>
#endif

#if defined(BOTAN_HAS_NUMBERTHEORY)
   #include <botan/numthry.h>
   #include <botan/internal/barrett.h>
   #include <botan/internal/primality.h>
#endif

#if defined(BOTAN_HAS_DL_GROUP)
   #include <botan/dl_group.h>
#endif

namespace Botan_CLI {

#if defined(BOTAN_HAS_BIGINT)

class PerfTest_MpMul final : public PerfTest {
   public:
      void go(const PerfConfig& config) override {
         std::chrono::milliseconds runtime_per_size = config.runtime();

         for(size_t bits : {256, 384, 512, 768, 1024, 1536, 2048, 3072, 4096}) {
            auto mul_timer = config.make_timer("BigInt mul " + std::to_string(bits));
            auto sqr_timer = config.make_timer("BigInt sqr " + std::to_string(bits));

            const Botan::BigInt y(config.rng(), bits);
            Botan::secure_vector<Botan::word> ws;

            while(mul_timer->under(runtime_per_size)) {
               Botan::BigInt x(config.rng(), bits);

               sqr_timer->start();
               x.square(ws);
               sqr_timer->stop();

               x.mask_bits(bits);

               mul_timer->start();
               x.mul(y, ws);
               mul_timer->stop();
            }

            config.record_result(*mul_timer);
            config.record_result(*sqr_timer);
         }
      }
};

BOTAN_REGISTER_PERF_TEST("mp_mul", PerfTest_MpMul);

class PerfTest_MpDiv final : public PerfTest {
   public:
      void go(const PerfConfig& config) override {
         std::chrono::milliseconds runtime_per_size = config.runtime();

         for(size_t n_bits : {256, 384, 512, 768, 1024, 1536, 2048, 3072, 4096}) {
            const size_t q_bits = n_bits / 2;
            const std::string bit_descr = std::to_string(n_bits) + "/" + std::to_string(q_bits);

            auto div_timer = config.make_timer("BigInt div " + bit_descr);
            auto ct_div_timer = config.make_timer("BigInt ct_div " + bit_descr);

            Botan::BigInt y;
            Botan::BigInt x;
            Botan::secure_vector<Botan::word> ws;

            Botan::BigInt q1;
            Botan::BigInt r1;
            Botan::BigInt q2;
            Botan::BigInt r2;

            while(ct_div_timer->under(runtime_per_size)) {
               x.randomize(config.rng(), n_bits);
               y.randomize(config.rng(), q_bits);

               div_timer->start();
               Botan::vartime_divide(x, y, q1, r1);
               div_timer->stop();

               ct_div_timer->start();
               Botan::ct_divide(x, y, q2, r2);
               ct_div_timer->stop();

               BOTAN_ASSERT_EQUAL(q1, q2, "Quotient ok");
               BOTAN_ASSERT_EQUAL(r1, r2, "Remainder ok");
            }

            config.record_result(*div_timer);
            config.record_result(*ct_div_timer);
         }
      }
};

BOTAN_REGISTER_PERF_TEST("mp_div", PerfTest_MpDiv);

class PerfTest_MpDiv10 final : public PerfTest {
   public:
      void go(const PerfConfig& config) override {
         std::chrono::milliseconds runtime_per_size = config.runtime();

         for(size_t n_bits : {256, 384, 512, 768, 1024, 1536, 2048, 3072, 4096}) {
            const std::string bit_descr = std::to_string(n_bits) + "/10";

            auto div_timer = config.make_timer("BigInt div " + bit_descr);
            auto ct_div_timer = config.make_timer("BigInt ct_div " + bit_descr);

            Botan::BigInt x;
            Botan::secure_vector<Botan::word> ws;

            const auto ten = Botan::BigInt::from_word(10);
            Botan::BigInt q1;
            Botan::BigInt r1;
            Botan::BigInt q2;
            Botan::word r2 = 0;

            while(ct_div_timer->under(runtime_per_size)) {
               x.randomize(config.rng(), n_bits);

               div_timer->start();
               Botan::vartime_divide(x, ten, q1, r1);
               div_timer->stop();

               ct_div_timer->start();
               Botan::ct_divide_word(x, 10, q2, r2);
               ct_div_timer->stop();

               BOTAN_ASSERT_EQUAL(q1, q2, "Quotient ok");
               BOTAN_ASSERT_EQUAL(r1, r2, "Remainder ok");
            }

            config.record_result(*div_timer);
            config.record_result(*ct_div_timer);
         }
      }
};

BOTAN_REGISTER_PERF_TEST("mp_div10", PerfTest_MpDiv10);

#endif

#if defined(BOTAN_HAS_NUMBERTHEORY)

class PerfTest_BnRedc final : public PerfTest {
   public:
      void go(const PerfConfig& config) override {
         const auto runtime = config.runtime();

         for(size_t bitsize : {512, 1024, 2048, 4096}) {
            Botan::BigInt p(config.rng(), bitsize);

            std::string bit_str = std::to_string(bitsize) + " bit ";
            auto barrett_setup_pub_timer = config.make_timer(bit_str + "Barrett setup public");
            auto barrett_setup_sec_timer = config.make_timer(bit_str + "Barrett setup secret");

            while(barrett_setup_sec_timer->under(runtime)) {
               barrett_setup_sec_timer->run([&]() { Botan::Barrett_Reduction::for_secret_modulus(p); });
               barrett_setup_pub_timer->run([&]() { Botan::Barrett_Reduction::for_public_modulus(p); });
            }

            config.record_result(*barrett_setup_pub_timer);
            config.record_result(*barrett_setup_sec_timer);

            auto mod_p = Botan::Barrett_Reduction::for_public_modulus(p);

            auto barrett_timer = config.make_timer(bit_str + "Barrett redc");
            auto knuth_timer = config.make_timer(bit_str + "Knuth redc");
            auto ct_modulo_timer = config.make_timer(bit_str + "ct_modulo");

            while(ct_modulo_timer->under(runtime)) {
               const Botan::BigInt x(config.rng(), p.bits() * 2 - 1);

               const Botan::BigInt r1 = barrett_timer->run([&] { return mod_p.reduce(x); });
               const Botan::BigInt r2 = knuth_timer->run([&] { return x % p; });
               const Botan::BigInt r3 = ct_modulo_timer->run([&] { return Botan::ct_modulo(x, p); });

               BOTAN_ASSERT(r1 == r2, "Computed different results");
               BOTAN_ASSERT(r1 == r3, "Computed different results");
            }

            config.record_result(*barrett_timer);
            config.record_result(*knuth_timer);
            config.record_result(*ct_modulo_timer);
         }
      }
};

BOTAN_REGISTER_PERF_TEST("bn_redc", PerfTest_BnRedc);

class PerfTest_InvMod final : public PerfTest {
   public:
      void go(const PerfConfig& config) override {
         const auto runtime = config.runtime();

         for(size_t bits : {256, 384, 512, 1024, 2048}) {
            const std::string bit_str = std::to_string(bits);

            auto timer = config.make_timer("inverse_mod-" + bit_str);
            auto gcd_timer = config.make_timer("gcd-" + bit_str);

            while(timer->under(runtime) && gcd_timer->under(runtime)) {
               const Botan::BigInt x(config.rng(), bits - 1);
               Botan::BigInt mod(config.rng(), bits);

               const Botan::BigInt x_inv = timer->run([&] { return Botan::inverse_mod(x, mod); });

               const Botan::BigInt g = gcd_timer->run([&] { return gcd(x, mod); });

               if(x_inv == 0) {
                  BOTAN_ASSERT(g != 1, "Inversion only fails if gcd(x, mod) > 1");
               } else {
                  BOTAN_ASSERT(g == 1, "Inversion succeeds only if gcd != 1");
                  const Botan::BigInt check = (x_inv * x) % mod;
                  BOTAN_ASSERT_EQUAL(check, 1, "Const time inversion correct");
               }
            }

            config.record_result(*timer);
            config.record_result(*gcd_timer);
         }
      }
};

BOTAN_REGISTER_PERF_TEST("inverse_mod", PerfTest_InvMod);

class PerfTest_IsPrime final : public PerfTest {
   public:
      void go(const PerfConfig& config) override {
         const auto runtime = config.runtime();

         for(size_t bits : {256, 512, 1024}) {
            auto mr_timer = config.make_timer("Miller-Rabin-" + std::to_string(bits));
            auto bpsw_timer = config.make_timer("Bailie-PSW-" + std::to_string(bits));
            auto lucas_timer = config.make_timer("Lucas-" + std::to_string(bits));

            Botan::BigInt n = Botan::random_prime(config.rng(), bits);

            while(lucas_timer->under(runtime)) {
               auto mod_n = Botan::Barrett_Reduction::for_public_modulus(n);

               mr_timer->run([&]() { return Botan::is_miller_rabin_probable_prime(n, mod_n, config.rng(), 2); });

               bpsw_timer->run([&]() { return Botan::is_bailie_psw_probable_prime(n, mod_n); });

               lucas_timer->run([&]() { return Botan::is_lucas_probable_prime(n, mod_n); });

               n += 2;
            }

            config.record_result(*mr_timer);
            config.record_result(*bpsw_timer);
            config.record_result(*lucas_timer);
         }
      }
};

BOTAN_REGISTER_PERF_TEST("primality_test", PerfTest_IsPrime);

class PerfTest_RandomPrime final : public PerfTest {
   public:
      void go(const PerfConfig& config) override {
         const auto coprime = Botan::BigInt::from_word(0x10001);
         const auto runtime = config.runtime();

         auto& rng = config.rng();

         for(size_t bits : {256, 384, 512, 768, 1024, 1536}) {
            auto genprime_timer = config.make_timer("random_prime " + std::to_string(bits));
            auto gensafe_timer = config.make_timer("random_safe_prime " + std::to_string(bits));
            auto is_prime_timer = config.make_timer("is_prime " + std::to_string(bits));

            while(gensafe_timer->under(runtime)) {
               const Botan::BigInt p = genprime_timer->run([&] { return Botan::random_prime(rng, bits, coprime); });

               if(!is_prime_timer->run([&] { return Botan::is_prime(p, rng, 64, true); })) {
                  config.error_output() << "Generated prime " << p << " which failed a primality test";
               }

               const Botan::BigInt sg = gensafe_timer->run([&] { return Botan::random_safe_prime(rng, bits); });

               if(!is_prime_timer->run([&] { return Botan::is_prime(sg, rng, 64, true); })) {
                  config.error_output() << "Generated safe prime " << sg << " which failed a primality test";
               }

               if(!is_prime_timer->run([&] { return Botan::is_prime(sg / 2, rng, 64, true); })) {
                  config.error_output() << "Generated prime " << sg / 2 << " which failed a primality test";
               }

               // Now test p+2, p+4, ... which may or may not be prime
               for(size_t i = 2; i <= 64; i += 2) {
                  is_prime_timer->run([&]() { Botan::is_prime(p + i, rng, 64, true); });
               }
            }

            config.record_result(*genprime_timer);
            config.record_result(*gensafe_timer);
            config.record_result(*is_prime_timer);
         }
      }
};

BOTAN_REGISTER_PERF_TEST("random_prime", PerfTest_RandomPrime);

#endif

#if defined(BOTAN_HAS_DL_GROUP)

class PerfTest_ModExp final : public PerfTest {
   public:
      void go(const PerfConfig& config) override {
         for(size_t group_bits : {1024, 1536, 2048, 3072, 4096, 6144, 8192}) {
            const std::string group_name = "modp/ietf/" + std::to_string(group_bits);
            auto group = Botan::DL_Group::from_name(group_name);

            const size_t e_bits = group.exponent_bits();
            const size_t f_bits = group_bits - 1;

            const Botan::BigInt random_e(config.rng(), e_bits);
            const Botan::BigInt random_f(config.rng(), f_bits);

            auto e_timer = config.make_timer(group_name + " short exp");
            auto f_timer = config.make_timer(group_name + "  full exp");

            while(f_timer->under(config.runtime())) {
               e_timer->run([&]() { group.power_g_p(random_e, e_bits); });
               f_timer->run([&]() { group.power_g_p(random_f, f_bits); });
            }

            config.record_result(*e_timer);
            config.record_result(*f_timer);
         }
      }
};

BOTAN_REGISTER_PERF_TEST("modexp", PerfTest_ModExp);

#endif

}  // namespace Botan_CLI

1	/*
2	* (C) 2024 Jack Lloyd
3	*
4	* Botan is released under the Simplified BSD License (see license.txt)
5	*/
6
7	#include "perf.h"
8
9	#if defined(BOTAN_HAS_BIGINT)
10	#include <botan/assert.h>
11	#include <botan/bigint.h>
12	#include <botan/internal/divide.h>
13	#endif
14
15	#if defined(BOTAN_HAS_NUMBERTHEORY)
16	#include <botan/numthry.h>
17	#include <botan/internal/barrett.h>
18	#include <botan/internal/primality.h>
19	#endif
20
21	#if defined(BOTAN_HAS_DL_GROUP)
22	#include <botan/dl_group.h>
23	#endif
24
25	namespace Botan_CLI {
26
27	#if defined(BOTAN_HAS_BIGINT)
28
29	class PerfTest_MpMul final : public PerfTest {	1✔
30	public:
31	void go(const PerfConfig& config) override {	1✔
32	std::chrono::milliseconds runtime_per_size = config.runtime();	1✔
33
34	for(size_t bits : {256, 384, 512, 768, 1024, 1536, 2048, 3072, 4096}) {	10✔
35	auto mul_timer = config.make_timer("BigInt mul " + std::to_string(bits));	18✔
36	auto sqr_timer = config.make_timer("BigInt sqr " + std::to_string(bits));	18✔
37
38	const Botan::BigInt y(config.rng(), bits);	9✔
39	Botan::secure_vector<Botan::word> ws;	9✔
40
41	while(mul_timer->under(runtime_per_size)) {	9,662✔
42	Botan::BigInt x(config.rng(), bits);	9,653✔
43
44	sqr_timer->start();	9,653✔
45	x.square(ws);	9,653✔
46	sqr_timer->stop();	9,653✔
47
48	x.mask_bits(bits);	9,653✔
49
50	mul_timer->start();	9,653✔
51	x.mul(y, ws);	9,653✔
52	mul_timer->stop();	9,653✔
53	}	9,653✔
54
55	config.record_result(*mul_timer);	9✔
56	config.record_result(*sqr_timer);	18✔
57	}	18✔
58	}	1✔
59	};
60
61	BOTAN_REGISTER_PERF_TEST("mp_mul", PerfTest_MpMul);	1✔
62
63	class PerfTest_MpDiv final : public PerfTest {	1✔
64	public:
65	void go(const PerfConfig& config) override {	1✔
66	std::chrono::milliseconds runtime_per_size = config.runtime();	1✔
67
68	for(size_t n_bits : {256, 384, 512, 768, 1024, 1536, 2048, 3072, 4096}) {	10✔
69	const size_t q_bits = n_bits / 2;	9✔
70	const std::string bit_descr = std::to_string(n_bits) + "/" + std::to_string(q_bits);	27✔
71
72	auto div_timer = config.make_timer("BigInt div " + bit_descr);	18✔
73	auto ct_div_timer = config.make_timer("BigInt ct_div " + bit_descr);	18✔
74
75	Botan::BigInt y;	9✔
76	Botan::BigInt x;	9✔
77	Botan::secure_vector<Botan::word> ws;	9✔
78
79	Botan::BigInt q1;	9✔
80	Botan::BigInt r1;	9✔
81	Botan::BigInt q2;	9✔
82	Botan::BigInt r2;	9✔
83
84	while(ct_div_timer->under(runtime_per_size)) {	9✔
85	x.randomize(config.rng(), n_bits);	69✔
86	y.randomize(config.rng(), q_bits);	69✔
87
88	div_timer->start();	69✔
89	Botan::vartime_divide(x, y, q1, r1);	69✔
90	div_timer->stop();	69✔
91
92	ct_div_timer->start();	69✔
93	Botan::ct_divide(x, y, q2, r2);	69✔
94	ct_div_timer->stop();	69✔
95
96	BOTAN_ASSERT_EQUAL(q1, q2, "Quotient ok");	69✔
97	BOTAN_ASSERT_EQUAL(r1, r2, "Remainder ok");	147✔
98	}
99
100	config.record_result(*div_timer);	9✔
101	config.record_result(*ct_div_timer);	9✔
102	}	18✔
103	}	1✔
104	};
105
106	BOTAN_REGISTER_PERF_TEST("mp_div", PerfTest_MpDiv);	1✔
107
108	class PerfTest_MpDiv10 final : public PerfTest {	1✔
109	public:
110	void go(const PerfConfig& config) override {	1✔
111	std::chrono::milliseconds runtime_per_size = config.runtime();	1✔
112
113	for(size_t n_bits : {256, 384, 512, 768, 1024, 1536, 2048, 3072, 4096}) {	10✔
114	const std::string bit_descr = std::to_string(n_bits) + "/10";	18✔
115
116	auto div_timer = config.make_timer("BigInt div " + bit_descr);	18✔
117	auto ct_div_timer = config.make_timer("BigInt ct_div " + bit_descr);	18✔
118
119	Botan::BigInt x;	9✔
120	Botan::secure_vector<Botan::word> ws;	9✔
121
122	const auto ten = Botan::BigInt::from_word(10);	9✔
123	Botan::BigInt q1;	9✔
124	Botan::BigInt r1;	9✔
125	Botan::BigInt q2;	9✔
126	Botan::word r2 = 0;	9✔
127
128	while(ct_div_timer->under(runtime_per_size)) {	9✔
129	x.randomize(config.rng(), n_bits);	721✔
130
131	div_timer->start();	721✔
132	Botan::vartime_divide(x, ten, q1, r1);	721✔
133	div_timer->stop();	721✔
134
135	ct_div_timer->start();	721✔
136	Botan::ct_divide_word(x, 10, q2, r2);	721✔
137	ct_div_timer->stop();	721✔
138
139	BOTAN_ASSERT_EQUAL(q1, q2, "Quotient ok");	721✔
140	BOTAN_ASSERT_EQUAL(r1, r2, "Remainder ok");	1,451✔
141	}
142
143	config.record_result(*div_timer);	9✔
144	config.record_result(*ct_div_timer);	9✔
145	}	18✔
146	}	1✔
147	};
148
149	BOTAN_REGISTER_PERF_TEST("mp_div10", PerfTest_MpDiv10);	1✔
150
151	#endif
152
153	#if defined(BOTAN_HAS_NUMBERTHEORY)
154
155	class PerfTest_BnRedc final : public PerfTest {	1✔
156	public:
157	void go(const PerfConfig& config) override {	1✔
158	const auto runtime = config.runtime();	1✔
159
160	for(size_t bitsize : {512, 1024, 2048, 4096}) {	5✔
161	Botan::BigInt p(config.rng(), bitsize);	4✔
162
163	std::string bit_str = std::to_string(bitsize) + " bit ";	8✔
164	auto barrett_setup_pub_timer = config.make_timer(bit_str + "Barrett setup public");	8✔
165	auto barrett_setup_sec_timer = config.make_timer(bit_str + "Barrett setup secret");	8✔
166
167	while(barrett_setup_sec_timer->under(runtime)) {	15✔
168	barrett_setup_sec_timer->run([&]() { Botan::Barrett_Reduction::for_secret_modulus(p); });	22✔
169	barrett_setup_pub_timer->run([&]() { Botan::Barrett_Reduction::for_public_modulus(p); });	22✔
170	}
171
172	config.record_result(*barrett_setup_pub_timer);	4✔
173	config.record_result(*barrett_setup_sec_timer);	4✔
174
175	auto mod_p = Botan::Barrett_Reduction::for_public_modulus(p);	4✔
176
177	auto barrett_timer = config.make_timer(bit_str + "Barrett redc");	8✔
178	auto knuth_timer = config.make_timer(bit_str + "Knuth redc");	8✔
179	auto ct_modulo_timer = config.make_timer(bit_str + "ct_modulo");	8✔
180
181	while(ct_modulo_timer->under(runtime)) {	11✔
182	const Botan::BigInt x(config.rng(), p.bits() * 2 - 1);	7✔
183
184	const Botan::BigInt r1 = barrett_timer->run([&] { return mod_p.reduce(x); });	14✔
185	const Botan::BigInt r2 = knuth_timer->run([&] { return x % p; });	14✔
186	const Botan::BigInt r3 = ct_modulo_timer->run([&] { return Botan::ct_modulo(x, p); });	14✔
187
188	BOTAN_ASSERT(r1 == r2, "Computed different results");	7✔
189	BOTAN_ASSERT(r1 == r3, "Computed different results");	7✔
190	}	7✔
191
192	config.record_result(*barrett_timer);	4✔
193	config.record_result(*knuth_timer);	4✔
194	config.record_result(*ct_modulo_timer);	8✔
195	}	20✔
196	}	1✔
197	};
198
199	BOTAN_REGISTER_PERF_TEST("bn_redc", PerfTest_BnRedc);	1✔
200
201	class PerfTest_InvMod final : public PerfTest {	1✔
202	public:
203	void go(const PerfConfig& config) override {	1✔
204	const auto runtime = config.runtime();	1✔
205
206	for(size_t bits : {256, 384, 512, 1024, 2048}) {	6✔
207	const std::string bit_str = std::to_string(bits);	5✔
208
209	auto timer = config.make_timer("inverse_mod-" + bit_str);	10✔
210	auto gcd_timer = config.make_timer("gcd-" + bit_str);	10✔
211
212	while(timer->under(runtime) && gcd_timer->under(runtime)) {	26✔
213	const Botan::BigInt x(config.rng(), bits - 1);	9✔
214	Botan::BigInt mod(config.rng(), bits);	9✔
215
216	const Botan::BigInt x_inv = timer->run([&] { return Botan::inverse_mod(x, mod); });	18✔
217
218	const Botan::BigInt g = gcd_timer->run([&] { return gcd(x, mod); });	18✔
219
220	if(x_inv == 0) {	9✔
221	BOTAN_ASSERT(g != 1, "Inversion only fails if gcd(x, mod) > 1");	3✔
222	} else {
223	BOTAN_ASSERT(g == 1, "Inversion succeeds only if gcd != 1");	6✔
224	const Botan::BigInt check = (x_inv * x) % mod;	6✔
225	BOTAN_ASSERT_EQUAL(check, 1, "Const time inversion correct");	6✔
226	}	6✔
227	}	9✔
228
229	config.record_result(*timer);	5✔
230	config.record_result(*gcd_timer);	10✔
231	}	10✔
232	}	1✔
233	};
234
235	BOTAN_REGISTER_PERF_TEST("inverse_mod", PerfTest_InvMod);	1✔
236
237	class PerfTest_IsPrime final : public PerfTest {	1✔
238	public:
239	void go(const PerfConfig& config) override {	1✔
240	const auto runtime = config.runtime();	1✔
241
242	for(size_t bits : {256, 512, 1024}) {	4✔
243	auto mr_timer = config.make_timer("Miller-Rabin-" + std::to_string(bits));	6✔
244	auto bpsw_timer = config.make_timer("Bailie-PSW-" + std::to_string(bits));	6✔
245	auto lucas_timer = config.make_timer("Lucas-" + std::to_string(bits));	6✔
246
247	Botan::BigInt n = Botan::random_prime(config.rng(), bits);	3✔
248
249	while(lucas_timer->under(runtime)) {	6✔
250	auto mod_n = Botan::Barrett_Reduction::for_public_modulus(n);	3✔
251
252	mr_timer->run([&]() { return Botan::is_miller_rabin_probable_prime(n, mod_n, config.rng(), 2); });	6✔
253
254	bpsw_timer->run([&]() { return Botan::is_bailie_psw_probable_prime(n, mod_n); });	6✔
255
256	lucas_timer->run([&]() { return Botan::is_lucas_probable_prime(n, mod_n); });	6✔
257
258	n += 2;	3✔
259	}	3✔
260
261	config.record_result(*mr_timer);	3✔
262	config.record_result(*bpsw_timer);	3✔
263	config.record_result(*lucas_timer);	3✔
264	}	9✔
265	}	1✔
266	};
267
268	BOTAN_REGISTER_PERF_TEST("primality_test", PerfTest_IsPrime);	1✔
269
270	class PerfTest_RandomPrime final : public PerfTest {	1✔
271	public:
272	void go(const PerfConfig& config) override {	1✔
273	const auto coprime = Botan::BigInt::from_word(0x10001);	1✔
274	const auto runtime = config.runtime();	1✔
275
276	auto& rng = config.rng();	1✔
277
278	for(size_t bits : {256, 384, 512, 768, 1024, 1536}) {	7✔
279	auto genprime_timer = config.make_timer("random_prime " + std::to_string(bits));	12✔
280	auto gensafe_timer = config.make_timer("random_safe_prime " + std::to_string(bits));	12✔
281	auto is_prime_timer = config.make_timer("is_prime " + std::to_string(bits));	12✔
282
283	while(gensafe_timer->under(runtime)) {	12✔
284	const Botan::BigInt p = genprime_timer->run([&] { return Botan::random_prime(rng, bits, coprime); });	12✔
285
286	if(!is_prime_timer->run([&] { return Botan::is_prime(p, rng, 64, true); })) {	12✔
287	config.error_output() << "Generated prime " << p << " which failed a primality test";	×
288	}
289
290	const Botan::BigInt sg = gensafe_timer->run([&] { return Botan::random_safe_prime(rng, bits); });	12✔
291
292	if(!is_prime_timer->run([&] { return Botan::is_prime(sg, rng, 64, true); })) {	12✔
293	config.error_output() << "Generated safe prime " << sg << " which failed a primality test";	×
294	}
295
296	if(!is_prime_timer->run([&] { return Botan::is_prime(sg / 2, rng, 64, true); })) {	12✔
297	config.error_output() << "Generated prime " << sg / 2 << " which failed a primality test";	×
298	}
299
300	// Now test p+2, p+4, ... which may or may not be prime
301	for(size_t i = 2; i <= 64; i += 2) {	198✔
302	is_prime_timer->run([&]() { Botan::is_prime(p + i, rng, 64, true); });	384✔
303	}
304	}	6✔
305
306	config.record_result(*genprime_timer);	6✔
307	config.record_result(*gensafe_timer);	6✔
308	config.record_result(*is_prime_timer);	12✔
309	}	12✔
310	}	1✔
311	};
312
313	BOTAN_REGISTER_PERF_TEST("random_prime", PerfTest_RandomPrime);	1✔
314
315	#endif
316
317	#if defined(BOTAN_HAS_DL_GROUP)
318
319	class PerfTest_ModExp final : public PerfTest {	1✔
320	public:
321	void go(const PerfConfig& config) override {	1✔
322	for(size_t group_bits : {1024, 1536, 2048, 3072, 4096, 6144, 8192}) {	8✔
323	const std::string group_name = "modp/ietf/" + std::to_string(group_bits);	14✔
324	auto group = Botan::DL_Group::from_name(group_name);	7✔
325
326	const size_t e_bits = group.exponent_bits();	7✔
327	const size_t f_bits = group_bits - 1;	7✔
328
329	const Botan::BigInt random_e(config.rng(), e_bits);	7✔
330	const Botan::BigInt random_f(config.rng(), f_bits);	7✔
331
332	auto e_timer = config.make_timer(group_name + " short exp");	14✔
333	auto f_timer = config.make_timer(group_name + " full exp");	14✔
334
335	while(f_timer->under(config.runtime())) {	15✔
336	e_timer->run([&]() { group.power_g_p(random_e, e_bits); });	16✔
337	f_timer->run([&]() { group.power_g_p(random_f, f_bits); });	16✔
338	}
339
340	config.record_result(*e_timer);	7✔
341	config.record_result(*f_timer);	14✔
342	}	21✔
343	}	1✔
344	};
345
346	BOTAN_REGISTER_PERF_TEST("modexp", PerfTest_ModExp);	1✔
347
348	#endif
349
350	} // namespace Botan_CLI

randombit / botan / 16395825001

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