21031897445

Committed 15 Jan 2026 12:50PM UTC coverage: 90.037% (-0.4%) from 90.395%

Build # 21031897445

Build Type

Pull #5240

github

Committed by

web-flow

Commit Message

Merge 13ffffdd5 into 32478179d

Pull Request Pull Request #5240: Some changes to reduce time taken by the coverage build

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0.0

/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 {
         const std::chrono::milliseconds runtime_per_size = config.runtime();

         for(const 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 {
         const std::chrono::milliseconds runtime_per_size = config.runtime();

         for(const 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;
            const 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 {
         const std::chrono::milliseconds runtime_per_size = config.runtime();

         for(const 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;
            const 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(const size_t bitsize : {256, 512, 1024, 2048, 4096}) {
            Botan::BigInt p(config.rng(), bitsize);

            const 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(const 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(const 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 is_prime_timer = config.make_timer("is_prime " + std::to_string(bits));

            while(genprime_timer->under(runtime) && is_prime_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";
               }

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

randombit / botan / 21031897445

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