13424504184

Committed 19 Feb 2025 11:37PM UTC coverage: 91.644% (+0.004%) from 91.64%

Build # 13424504184

Build Type

push

github

Committed by

web-flow

Commit Message

Merge pull request #4692 from randombit/jack/no-word4-unroll

Don't bother with loop blocking for carry chains with constant lengths

Run Details

95002 of 103664 relevant lines covered (91.64%)

11426910.46 hits per line

Source File
Press 'n' to go to next uncovered line, 'b' for previous

98.0

/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/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) + " 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::Modular_Reducer::for_secret_modulus(p); });
               barrett_setup_pub_timer->run([&]() { Botan::Modular_Reducer::for_public_modulus(p); });
            }

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

            auto mod_p = Botan::Modular_Reducer::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::Modular_Reducer::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/reducer.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)) {	9,101✔
42	Botan::BigInt x(config.rng(), bits);	9,092✔
43
44	sqr_timer->start();	9,092✔
45	x.square(ws);	9,092✔
46	sqr_timer->stop();	9,092✔
47
48	x.mask_bits(bits);	9,092✔
49
50	mul_timer->start();	9,092✔
51	x.mul(y, ws);	9,092✔
52	mul_timer->stop();	9,092✔
53	}	9,092✔
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, r1, q2, r2;	9✔
80
81	while(ct_div_timer->under(runtime_per_size)) {	9✔
82	x.randomize(config.rng(), n_bits);	68✔
83	y.randomize(config.rng(), q_bits);	68✔
84
85	div_timer->start();	68✔
86	Botan::vartime_divide(x, y, q1, r1);	68✔
87	div_timer->stop();	68✔
88
89	ct_div_timer->start();	68✔
90	Botan::ct_divide(x, y, q2, r2);	68✔
91	ct_div_timer->stop();	68✔
92
93	BOTAN_ASSERT_EQUAL(q1, q2, "Quotient ok");	68✔
94	BOTAN_ASSERT_EQUAL(r1, r2, "Remainder ok");	145✔
95	}
96
97	config.record_result(*div_timer);	9✔
98	config.record_result(*ct_div_timer);	9✔
99	}	18✔
100	}	1✔
101	};
102
103	BOTAN_REGISTER_PERF_TEST("mp_div", PerfTest_MpDiv);	1✔
104
105	class PerfTest_MpDiv10 final : public PerfTest {	1✔
106	public:
107	void go(const PerfConfig& config) override {	1✔
108	std::chrono::milliseconds runtime_per_size = config.runtime();	1✔
109
110	for(size_t n_bits : {256, 384, 512, 768, 1024, 1536, 2048, 3072, 4096}) {	10✔
111	const std::string bit_descr = std::to_string(n_bits) + "/10";	18✔
112
113	auto div_timer = config.make_timer("BigInt div " + bit_descr);	18✔
114	auto ct_div_timer = config.make_timer("BigInt ct_div " + bit_descr);	18✔
115
116	Botan::BigInt x;	9✔
117	Botan::secure_vector<Botan::word> ws;	9✔
118
119	const auto ten = Botan::BigInt::from_word(10);	9✔
120	Botan::BigInt q1, r1, q2;	9✔
121	Botan::word r2;	9✔
122
123	while(ct_div_timer->under(runtime_per_size)) {	9✔
124	x.randomize(config.rng(), n_bits);	703✔
125
126	div_timer->start();	703✔
127	Botan::vartime_divide(x, ten, q1, r1);	703✔
128	div_timer->stop();	703✔
129
130	ct_div_timer->start();	703✔
131	Botan::ct_divide_word(x, 10, q2, r2);	703✔
132	ct_div_timer->stop();	703✔
133
134	BOTAN_ASSERT_EQUAL(q1, q2, "Quotient ok");	703✔
135	BOTAN_ASSERT_EQUAL(r1, r2, "Remainder ok");	1,415✔
136	}
137
138	config.record_result(*div_timer);	9✔
139	config.record_result(*ct_div_timer);	9✔
140	}	18✔
141	}	1✔
142	};
143
144	BOTAN_REGISTER_PERF_TEST("mp_div10", PerfTest_MpDiv10);	1✔
145
146	#endif
147
148	#if defined(BOTAN_HAS_NUMBERTHEORY)
149
150	class PerfTest_BnRedc final : public PerfTest {	1✔
151	public:
152	void go(const PerfConfig& config) override {	1✔
153	const auto runtime = config.runtime();	1✔
154
155	for(size_t bitsize : {512, 1024, 2048, 4096}) {	5✔
156	Botan::BigInt p(config.rng(), bitsize);	4✔
157
158	std::string bit_str = std::to_string(bitsize) + " bit ";	8✔
159	auto barrett_setup_pub_timer = config.make_timer(bit_str + "Barrett setup public");	8✔
160	auto barrett_setup_sec_timer = config.make_timer(bit_str + "Barrett setup secret");	8✔
161
162	while(barrett_setup_sec_timer->under(runtime)) {	18✔
163	barrett_setup_sec_timer->run([&]() { Botan::Modular_Reducer::for_secret_modulus(p); });	28✔
164	barrett_setup_pub_timer->run([&]() { Botan::Modular_Reducer::for_public_modulus(p); });	28✔
165	}
166
167	config.record_result(*barrett_setup_pub_timer);	4✔
168	config.record_result(*barrett_setup_sec_timer);	4✔
169
170	auto mod_p = Botan::Modular_Reducer::for_public_modulus(p);	4✔
171
172	auto barrett_timer = config.make_timer(bit_str + "Barrett redc");	8✔
173	auto knuth_timer = config.make_timer(bit_str + "Knuth redc");	8✔
174	auto ct_modulo_timer = config.make_timer(bit_str + "ct_modulo");	8✔
175
176	while(ct_modulo_timer->under(runtime)) {	13✔
177	const Botan::BigInt x(config.rng(), p.bits() * 2 - 1);	9✔
178
179	const Botan::BigInt r1 = barrett_timer->run([&] { return mod_p.reduce(x); });	18✔
180	const Botan::BigInt r2 = knuth_timer->run([&] { return x % p; });	18✔
181	const Botan::BigInt r3 = ct_modulo_timer->run([&] { return Botan::ct_modulo(x, p); });	18✔
182
183	BOTAN_ASSERT(r1 == r2, "Computed different results");	9✔
184	BOTAN_ASSERT(r1 == r3, "Computed different results");	9✔
185	}	9✔
186
187	config.record_result(*barrett_timer);	4✔
188	config.record_result(*knuth_timer);	4✔
189	config.record_result(*ct_modulo_timer);	8✔
190	}	20✔
191	}	1✔
192	};
193
194	BOTAN_REGISTER_PERF_TEST("bn_redc", PerfTest_BnRedc);	1✔
195
196	class PerfTest_InvMod final : public PerfTest {	1✔
197	public:
198	void go(const PerfConfig& config) override {	1✔
199	const auto runtime = config.runtime();	1✔
200
201	for(size_t bits : {256, 384, 512, 1024, 2048}) {	6✔
202	const std::string bit_str = std::to_string(bits);	5✔
203
204	auto timer = config.make_timer("inverse_mod-" + bit_str);	10✔
205	auto gcd_timer = config.make_timer("gcd-" + bit_str);	10✔
206
207	while(timer->under(runtime) && gcd_timer->under(runtime)) {	13✔
208	const Botan::BigInt x(config.rng(), bits - 1);	8✔
209	Botan::BigInt mod(config.rng(), bits);	8✔
210
211	const Botan::BigInt x_inv = timer->run([&] { return Botan::inverse_mod(x, mod); });	16✔
212
213	const Botan::BigInt g = gcd_timer->run([&] { return gcd(x, mod); });	16✔
214
215	if(x_inv == 0) {	8✔
216	BOTAN_ASSERT(g != 1, "Inversion only fails if gcd(x, mod) > 1");	×
217	} else {
218	BOTAN_ASSERT(g == 1, "Inversion succeeds only if gcd != 1");	8✔
219	const Botan::BigInt check = (x_inv * x) % mod;	8✔
220	BOTAN_ASSERT_EQUAL(check, 1, "Const time inversion correct");	8✔
221	}	8✔
222	}	8✔
223
224	config.record_result(*timer);	5✔
225	config.record_result(*gcd_timer);	10✔
226	}	5✔
227	}	1✔
228	};
229
230	BOTAN_REGISTER_PERF_TEST("inverse_mod", PerfTest_InvMod);	1✔
231
232	class PerfTest_IsPrime final : public PerfTest {	1✔
233	public:
234	void go(const PerfConfig& config) override {	1✔
235	const auto runtime = config.runtime();	1✔
236
237	for(size_t bits : {256, 512, 1024}) {	4✔
238	auto mr_timer = config.make_timer("Miller-Rabin-" + std::to_string(bits));	6✔
239	auto bpsw_timer = config.make_timer("Bailie-PSW-" + std::to_string(bits));	6✔
240	auto lucas_timer = config.make_timer("Lucas-" + std::to_string(bits));	6✔
241
242	Botan::BigInt n = Botan::random_prime(config.rng(), bits);	3✔
243
244	while(lucas_timer->under(runtime)) {	6✔
245	auto mod_n = Botan::Modular_Reducer::for_public_modulus(n);	3✔
246
247	mr_timer->run([&]() { return Botan::is_miller_rabin_probable_prime(n, mod_n, config.rng(), 2); });	6✔
248
249	bpsw_timer->run([&]() { return Botan::is_bailie_psw_probable_prime(n, mod_n); });	6✔
250
251	lucas_timer->run([&]() { return Botan::is_lucas_probable_prime(n, mod_n); });	6✔
252
253	n += 2;	3✔
254	}	3✔
255
256	config.record_result(*mr_timer);	3✔
257	config.record_result(*bpsw_timer);	3✔
258	config.record_result(*lucas_timer);	3✔
259	}	9✔
260	}	1✔
261	};
262
263	BOTAN_REGISTER_PERF_TEST("primality_test", PerfTest_IsPrime);	1✔
264
265	class PerfTest_RandomPrime final : public PerfTest {	1✔
266	public:
267	void go(const PerfConfig& config) override {	1✔
268	const auto coprime = Botan::BigInt::from_word(0x10001);	1✔
269	const auto runtime = config.runtime();	1✔
270
271	auto& rng = config.rng();	1✔
272
273	for(size_t bits : {256, 384, 512, 768, 1024, 1536}) {	7✔
274	auto genprime_timer = config.make_timer("random_prime " + std::to_string(bits));	12✔
275	auto gensafe_timer = config.make_timer("random_safe_prime " + std::to_string(bits));	12✔
276	auto is_prime_timer = config.make_timer("is_prime " + std::to_string(bits));	12✔
277
278	while(gensafe_timer->under(runtime)) {	12✔
279	const Botan::BigInt p = genprime_timer->run([&] { return Botan::random_prime(rng, bits, coprime); });	12✔
280
281	if(!is_prime_timer->run([&] { return Botan::is_prime(p, rng, 64, true); })) {	12✔
282	config.error_output() << "Generated prime " << p << " which failed a primality test";	×
283	}
284
285	const Botan::BigInt sg = gensafe_timer->run([&] { return Botan::random_safe_prime(rng, bits); });	12✔
286
287	if(!is_prime_timer->run([&] { return Botan::is_prime(sg, rng, 64, true); })) {	12✔
288	config.error_output() << "Generated safe prime " << sg << " which failed a primality test";	×
289	}
290
291	if(!is_prime_timer->run([&] { return Botan::is_prime(sg / 2, rng, 64, true); })) {	12✔
292	config.error_output() << "Generated prime " << sg / 2 << " which failed a primality test";	×
293	}
294
295	// Now test p+2, p+4, ... which may or may not be prime
296	for(size_t i = 2; i <= 64; i += 2) {	198✔
297	is_prime_timer->run([&]() { Botan::is_prime(p + i, rng, 64, true); });	384✔
298	}
299	}	6✔
300
301	config.record_result(*genprime_timer);	6✔
302	config.record_result(*gensafe_timer);	6✔
303	config.record_result(*is_prime_timer);	12✔
304	}	12✔
305	}	1✔
306	};
307
308	BOTAN_REGISTER_PERF_TEST("random_prime", PerfTest_RandomPrime);	1✔
309
310	#endif
311
312	#if defined(BOTAN_HAS_DL_GROUP)
313
314	class PerfTest_ModExp final : public PerfTest {	1✔
315	public:
316	void go(const PerfConfig& config) override {	1✔
317	for(size_t group_bits : {1024, 1536, 2048, 3072, 4096, 6144, 8192}) {	8✔
318	const std::string group_name = "modp/ietf/" + std::to_string(group_bits);	14✔
319	auto group = Botan::DL_Group::from_name(group_name);	7✔
320
321	const size_t e_bits = group.exponent_bits();	7✔
322	const size_t f_bits = group_bits - 1;	7✔
323
324	const Botan::BigInt random_e(config.rng(), e_bits);	7✔
325	const Botan::BigInt random_f(config.rng(), f_bits);	7✔
326
327	auto e_timer = config.make_timer(group_name + " short exp");	14✔
328	auto f_timer = config.make_timer(group_name + " full exp");	14✔
329
330	while(f_timer->under(config.runtime())) {	14✔
331	e_timer->run([&]() { group.power_g_p(random_e, e_bits); });	14✔
332	f_timer->run([&]() { group.power_g_p(random_f, f_bits); });	14✔
333	}
334
335	config.record_result(*e_timer);	7✔
336	config.record_result(*f_timer);	14✔
337	}	21✔
338	}	1✔
339	};
340
341	BOTAN_REGISTER_PERF_TEST("modexp", PerfTest_ModExp);	1✔
342
343	#endif
344
345	} // namespace Botan_CLI

randombit / botan / 13424504184

Source File Press 'n' to go to next uncovered line, 'b' for previous

Source File
Press 'n' to go to next uncovered line, 'b' for previous