12890812993

Committed 21 Jan 2025 11:51AM UTC coverage: 91.215% (-0.001%) from 91.216%

Build # 12890812993

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Commit Message

Merge pull request #4579 from randombit/jack/dl-group-depr

Deprecate a couple of functions in DL_Group

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98.4

/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/bigint.h>
   #include <botan/internal/divide.h>
#endif

#if defined(BOTAN_HAS_NUMBERTHEORY)
   #include <botan/numthry.h>
   #include <botan/reducer.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, r1, q2, 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, r1, q2;
            Botan::word r2;

            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);
            auto barrett_timer = config.make_timer("Barrett-" + bit_str);
            auto schoolbook_timer = config.make_timer("Schoolbook-" + bit_str);

            Botan::Modular_Reducer mod_p(p);

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

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

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

            config.record_result(*barrett_timer);
            config.record_result(*schoolbook_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)) {
               Botan::Modular_Reducer mod_n(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);
            const Botan::DL_Group group(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/bigint.h>
11	#include <botan/internal/divide.h>
12	#endif
13
14	#if defined(BOTAN_HAS_NUMBERTHEORY)
15	#include <botan/numthry.h>
16	#include <botan/reducer.h>
17	#include <botan/internal/primality.h>
18	#endif
19
20	#if defined(BOTAN_HAS_DL_GROUP)
21	#include <botan/dl_group.h>
22	#endif
23
24	namespace Botan_CLI {
25
26	#if defined(BOTAN_HAS_BIGINT)
27
28	class PerfTest_MpMul final : public PerfTest {	1✔
29	public:
30	void go(const PerfConfig& config) override {	1✔
31	std::chrono::milliseconds runtime_per_size = config.runtime();	1✔
32
33	for(size_t bits : {256, 384, 512, 768, 1024, 1536, 2048, 3072, 4096}) {	10✔
34	auto mul_timer = config.make_timer("BigInt mul " + std::to_string(bits));	18✔
35	auto sqr_timer = config.make_timer("BigInt sqr " + std::to_string(bits));	18✔
36
37	const Botan::BigInt y(config.rng(), bits);	9✔
38	Botan::secure_vector<Botan::word> ws;	9✔
39
40	while(mul_timer->under(runtime_per_size)) {	9,391✔
41	Botan::BigInt x(config.rng(), bits);	9,382✔
42
43	sqr_timer->start();	9,382✔
44	x.square(ws);	9,382✔
45	sqr_timer->stop();	9,382✔
46
47	x.mask_bits(bits);	9,382✔
48
49	mul_timer->start();	9,382✔
50	x.mul(y, ws);	9,382✔
51	mul_timer->stop();	9,382✔
52	}	9,382✔
53
54	config.record_result(*mul_timer);	9✔
55	config.record_result(*sqr_timer);	18✔
56	}	27✔
57	}	1✔
58	};
59
60	BOTAN_REGISTER_PERF_TEST("mp_mul", PerfTest_MpMul);	1✔
61
62	class PerfTest_MpDiv final : public PerfTest {	1✔
63	public:
64	void go(const PerfConfig& config) override {	1✔
65	std::chrono::milliseconds runtime_per_size = config.runtime();	1✔
66
67	for(size_t n_bits : {256, 384, 512, 768, 1024, 1536, 2048, 3072, 4096}) {	10✔
68	const size_t q_bits = n_bits / 2;	9✔
69	const std::string bit_descr = std::to_string(n_bits) + "/" + std::to_string(q_bits);	27✔
70
71	auto div_timer = config.make_timer("BigInt div " + bit_descr);	18✔
72	auto ct_div_timer = config.make_timer("BigInt ct_div " + bit_descr);	18✔
73
74	Botan::BigInt y;	9✔
75	Botan::BigInt x;	9✔
76	Botan::secure_vector<Botan::word> ws;	9✔
77
78	Botan::BigInt q1, r1, q2, r2;	9✔
79
80	while(ct_div_timer->under(runtime_per_size)) {	9✔
81	x.randomize(config.rng(), n_bits);	94✔
82	y.randomize(config.rng(), q_bits);	94✔
83
84	div_timer->start();	94✔
85	Botan::vartime_divide(x, y, q1, r1);	94✔
86	div_timer->stop();	94✔
87
88	ct_div_timer->start();	94✔
89	Botan::ct_divide(x, y, q2, r2);	94✔
90	ct_div_timer->stop();	94✔
91
92	BOTAN_ASSERT_EQUAL(q1, q2, "Quotient ok");	94✔
93	BOTAN_ASSERT_EQUAL(r1, r2, "Remainder ok");	197✔
94	}
95
96	config.record_result(*div_timer);	9✔
97	config.record_result(*ct_div_timer);	18✔
98	}	63✔
99	}	1✔
100	};
101
102	BOTAN_REGISTER_PERF_TEST("mp_div", PerfTest_MpDiv);	1✔
103
104	class PerfTest_MpDiv10 final : public PerfTest {	1✔
105	public:
106	void go(const PerfConfig& config) override {	1✔
107	std::chrono::milliseconds runtime_per_size = config.runtime();	1✔
108
109	for(size_t n_bits : {256, 384, 512, 768, 1024, 1536, 2048, 3072, 4096}) {	10✔
110	const std::string bit_descr = std::to_string(n_bits) + "/10";	18✔
111
112	auto div_timer = config.make_timer("BigInt div " + bit_descr);	18✔
113	auto ct_div_timer = config.make_timer("BigInt ct_div " + bit_descr);	18✔
114
115	Botan::BigInt x;	9✔
116	Botan::secure_vector<Botan::word> ws;	9✔
117
118	const auto ten = Botan::BigInt::from_word(10);	9✔
119	Botan::BigInt q1, r1, q2;	9✔
120	Botan::word r2;	9✔
121
122	while(ct_div_timer->under(runtime_per_size)) {	9✔
123	x.randomize(config.rng(), n_bits);	723✔
124
125	div_timer->start();	723✔
126	Botan::vartime_divide(x, ten, q1, r1);	723✔
127	div_timer->stop();	723✔
128
129	ct_div_timer->start();	723✔
130	Botan::ct_divide_word(x, 10, q2, r2);	723✔
131	ct_div_timer->stop();	723✔
132
133	BOTAN_ASSERT_EQUAL(q1, q2, "Quotient ok");	723✔
134	BOTAN_ASSERT_EQUAL(r1, r2, "Remainder ok");	1,455✔
135	}
136
137	config.record_result(*div_timer);	9✔
138	config.record_result(*ct_div_timer);	18✔
139	}	54✔
140	}	1✔
141	};
142
143	BOTAN_REGISTER_PERF_TEST("mp_div10", PerfTest_MpDiv10);	1✔
144
145	#endif
146
147	#if defined(BOTAN_HAS_NUMBERTHEORY)
148
149	class PerfTest_BnRedc final : public PerfTest {	1✔
150	public:
151	void go(const PerfConfig& config) override {	1✔
152	const auto runtime = config.runtime();	1✔
153
154	for(size_t bitsize : {512, 1024, 2048, 4096}) {	5✔
155	Botan::BigInt p(config.rng(), bitsize);	4✔
156
157	std::string bit_str = std::to_string(bitsize);	4✔
158	auto barrett_timer = config.make_timer("Barrett-" + bit_str);	8✔
159	auto schoolbook_timer = config.make_timer("Schoolbook-" + bit_str);	8✔
160
161	Botan::Modular_Reducer mod_p(p);	4✔
162
163	while(schoolbook_timer->under(runtime)) {	84✔
164	const Botan::BigInt x(config.rng(), p.bits() * 2 - 2);	80✔
165
166	const Botan::BigInt r1 = barrett_timer->run([&] { return mod_p.reduce(x); });	160✔
167	const Botan::BigInt r2 = schoolbook_timer->run([&] { return x % p; });	160✔
168
169	BOTAN_ASSERT(r1 == r2, "Computed different results");	80✔
170	}
171
172	config.record_result(*barrett_timer);	4✔
173	config.record_result(*schoolbook_timer);	4✔
174	}	12✔
175	}	1✔
176	};
177
178	BOTAN_REGISTER_PERF_TEST("bn_redc", PerfTest_BnRedc);	1✔
179
180	class PerfTest_InvMod final : public PerfTest {	1✔
181	public:
182	void go(const PerfConfig& config) override {	1✔
183	const auto runtime = config.runtime();	1✔
184
185	for(size_t bits : {256, 384, 512, 1024, 2048}) {	6✔
186	const std::string bit_str = std::to_string(bits);	5✔
187
188	auto timer = config.make_timer("inverse_mod-" + bit_str);	10✔
189	auto gcd_timer = config.make_timer("gcd-" + bit_str);	10✔
190
191	while(timer->under(runtime) && gcd_timer->under(runtime)) {	11✔
192	const Botan::BigInt x(config.rng(), bits - 1);	6✔
193	Botan::BigInt mod(config.rng(), bits);	6✔
194
195	const Botan::BigInt x_inv = timer->run([&] { return Botan::inverse_mod(x, mod); });	12✔
196
197	const Botan::BigInt g = gcd_timer->run([&] { return gcd(x, mod); });	12✔
198
199	if(x_inv == 0) {	6✔
200	BOTAN_ASSERT(g != 1, "Inversion only fails if gcd(x, mod) > 1");	1✔
201	} else {
202	BOTAN_ASSERT(g == 1, "Inversion succeeds only if gcd != 1");	5✔
203	const Botan::BigInt check = (x_inv * x) % mod;	5✔
204	BOTAN_ASSERT_EQUAL(check, 1, "Const time inversion correct");	5✔
205	}	5✔
206	}	23✔
207
208	config.record_result(*timer);	5✔
209	config.record_result(*gcd_timer);	10✔
210	}	5✔
211	}	1✔
212	};
213
214	BOTAN_REGISTER_PERF_TEST("inverse_mod", PerfTest_InvMod);	1✔
215
216	class PerfTest_IsPrime final : public PerfTest {	1✔
217	public:
218	void go(const PerfConfig& config) override {	1✔
219	const auto runtime = config.runtime();	1✔
220
221	for(size_t bits : {256, 512, 1024}) {	4✔
222	auto mr_timer = config.make_timer("Miller-Rabin-" + std::to_string(bits));	6✔
223	auto bpsw_timer = config.make_timer("Bailie-PSW-" + std::to_string(bits));	6✔
224	auto lucas_timer = config.make_timer("Lucas-" + std::to_string(bits));	6✔
225
226	Botan::BigInt n = Botan::random_prime(config.rng(), bits);	3✔
227
228	while(lucas_timer->under(runtime)) {	6✔
229	Botan::Modular_Reducer mod_n(n);	3✔
230
231	mr_timer->run([&]() { return Botan::is_miller_rabin_probable_prime(n, mod_n, config.rng(), 2); });	6✔
232
233	bpsw_timer->run([&]() { return Botan::is_bailie_psw_probable_prime(n, mod_n); });	6✔
234
235	lucas_timer->run([&]() { return Botan::is_lucas_probable_prime(n, mod_n); });	6✔
236
237	n += 2;	3✔
238	}	3✔
239
240	config.record_result(*mr_timer);	3✔
241	config.record_result(*bpsw_timer);	3✔
242	config.record_result(*lucas_timer);	6✔
243	}	9✔
244	}	1✔
245	};
246
247	BOTAN_REGISTER_PERF_TEST("primality_test", PerfTest_IsPrime);	1✔
248
249	class PerfTest_RandomPrime final : public PerfTest {	1✔
250	public:
251	void go(const PerfConfig& config) override {	1✔
252	const auto coprime = Botan::BigInt::from_word(0x10001);	1✔
253	const auto runtime = config.runtime();	1✔
254
255	auto& rng = config.rng();	1✔
256
257	for(size_t bits : {256, 384, 512, 768, 1024, 1536}) {	7✔
258	auto genprime_timer = config.make_timer("random_prime " + std::to_string(bits));	12✔
259	auto gensafe_timer = config.make_timer("random_safe_prime " + std::to_string(bits));	12✔
260	auto is_prime_timer = config.make_timer("is_prime " + std::to_string(bits));	12✔
261
262	while(gensafe_timer->under(runtime)) {	12✔
263	const Botan::BigInt p = genprime_timer->run([&] { return Botan::random_prime(rng, bits, coprime); });	12✔
264
265	if(!is_prime_timer->run([&] { return Botan::is_prime(p, rng, 64, true); })) {	12✔
266	config.error_output() << "Generated prime " << p << " which failed a primality test";	×
267	}
268
269	const Botan::BigInt sg = gensafe_timer->run([&] { return Botan::random_safe_prime(rng, bits); });	12✔
270
271	if(!is_prime_timer->run([&] { return Botan::is_prime(sg, rng, 64, true); })) {	12✔
272	config.error_output() << "Generated safe prime " << sg << " which failed a primality test";	×
273	}
274
275	if(!is_prime_timer->run([&] { return Botan::is_prime(sg / 2, rng, 64, true); })) {	18✔
276	config.error_output() << "Generated prime " << sg / 2 << " which failed a primality test";	×
277	}
278
279	// Now test p+2, p+4, ... which may or may not be prime
280	for(size_t i = 2; i <= 64; i += 2) {	198✔
281	is_prime_timer->run([&]() { Botan::is_prime(p + i, rng, 64, true); });	576✔
282	}
283	}	12✔
284
285	config.record_result(*genprime_timer);	6✔
286	config.record_result(*gensafe_timer);	6✔
287	config.record_result(*is_prime_timer);	12✔
288	}	12✔
289	}	1✔
290	};
291
292	BOTAN_REGISTER_PERF_TEST("random_prime", PerfTest_RandomPrime);	1✔
293
294	#endif
295
296	#if defined(BOTAN_HAS_DL_GROUP)
297
298	class PerfTest_ModExp final : public PerfTest {	1✔
299	public:
300	void go(const PerfConfig& config) override {	1✔
301	for(size_t group_bits : {1024, 1536, 2048, 3072, 4096, 6144, 8192}) {	8✔
302	const std::string group_name = "modp/ietf/" + std::to_string(group_bits);	14✔
303	const Botan::DL_Group group(group_name);	7✔
304
305	const size_t e_bits = group.exponent_bits();	7✔
306	const size_t f_bits = group_bits - 1;	7✔
307
308	const Botan::BigInt random_e(config.rng(), e_bits);	7✔
309	const Botan::BigInt random_f(config.rng(), f_bits);	7✔
310
311	auto e_timer = config.make_timer(group_name + " short exp");	14✔
312	auto f_timer = config.make_timer(group_name + " full exp");	14✔
313
314	while(f_timer->under(config.runtime())) {	15✔
315	e_timer->run([&]() { group.power_g_p(random_e, e_bits); });	16✔
316	f_timer->run([&]() { group.power_g_p(random_f, f_bits); });	16✔
317	}
318
319	config.record_result(*e_timer);	7✔
320	config.record_result(*f_timer);	14✔
321	}	35✔
322	}	1✔
323	};
324
325	BOTAN_REGISTER_PERF_TEST("modexp", PerfTest_ModExp);	1✔
326
327	#endif
328
329	} // namespace Botan_CLI

randombit / botan / 12890812993

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