5356326050

Committed 23 Jun 2023 01:05PM UTC coverage: 91.728% (-0.008%) from 91.736%

Build # 5356326050

Build Type

Pull #3595

github

Committed by

web-flow

Commit Message

Merge a5b917599 into 92171c524

Pull Request Pull Request #3595: Improve clang-tidy coverage

Run Details

78163 of 85212 relevant lines covered (91.73%)

12690161.35 hits per line

Source File
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95.0

/src/fuzzer/bn_cmp.cpp

/*
* (C) 2021 Jack Lloyd
*
* Botan is released under the Simplified BSD License (see license.txt)
*/

#include "fuzzers.h"

#include <botan/bigint.h>

void fuzz(const uint8_t in[], size_t len) {
   const size_t max_bits = 512;

   if(len < 3 || len > 1 + 2 * (max_bits / 8)) {
      return;
   }

   const uint8_t signs = in[0];
   const size_t x_len = (len - 1) / 2;

   Botan::BigInt x = Botan::BigInt::decode(in + 1, x_len);
   Botan::BigInt y = Botan::BigInt::decode(in + 1 + x_len, len - x_len - 1);

   if(signs & 1) {
      x.flip_sign();
   }
   if(signs & 2) {
      y.flip_sign();
   }

   const Botan::BigInt d1 = x - y;
   const Botan::BigInt d2 = y - x;

   FUZZER_ASSERT_TRUE(d1.cmp(d2, false) == 0);

   const bool is_eq = (x == y);
   const bool is_lt = (x < y);
   const bool is_gt = (x > y);
   const bool is_lte = (x <= y);
   const bool is_gte = (x >= y);

   if(is_eq) {
      FUZZER_ASSERT_TRUE(d1.is_zero());
      FUZZER_ASSERT_TRUE(d2.is_zero());
   }

   if(is_lte) {
      FUZZER_ASSERT_TRUE(is_lt || is_eq);
   }

   if(is_gte) {
      FUZZER_ASSERT_TRUE(is_gt || is_eq);
   }

   if(is_lt) {
      FUZZER_ASSERT_TRUE(!is_gt);
      FUZZER_ASSERT_TRUE(d1.is_nonzero());
      FUZZER_ASSERT_TRUE(d2.is_nonzero());
      FUZZER_ASSERT_TRUE(d1.is_negative());
      FUZZER_ASSERT_TRUE(d2.is_positive());
   }

   if(is_gt) {
      FUZZER_ASSERT_TRUE(!is_lt);
      FUZZER_ASSERT_TRUE(d1.is_nonzero());
      FUZZER_ASSERT_TRUE(d2.is_nonzero());
      FUZZER_ASSERT_TRUE(d1.is_positive());
      FUZZER_ASSERT_TRUE(d2.is_negative());
   }
}

1	/*
2	* (C) 2021 Jack Lloyd
3	*
4	* Botan is released under the Simplified BSD License (see license.txt)
5	*/
6
7	#include "fuzzers.h"
8
9	#include <botan/bigint.h>
10
11	void fuzz(const uint8_t in[], size_t len) {	1,000✔
12	const size_t max_bits = 512;	1,000✔
13
14	if(len < 3 \|\| len > 1 + 2 * (max_bits / 8)) {	1,000✔
15	return;	873✔
16	}
17
18	const uint8_t signs = in[0];	127✔
19	const size_t x_len = (len - 1) / 2;	127✔
20
21	Botan::BigInt x = Botan::BigInt::decode(in + 1, x_len);	127✔
22	Botan::BigInt y = Botan::BigInt::decode(in + 1 + x_len, len - x_len - 1);	127✔
23
24	if(signs & 1) {	127✔
25	x.flip_sign();	62✔
26	}
27	if(signs & 2) {	127✔
28	y.flip_sign();	64✔
29	}
30
31	const Botan::BigInt d1 = x - y;	127✔
32	const Botan::BigInt d2 = y - x;	127✔
33
34	FUZZER_ASSERT_TRUE(d1.cmp(d2, false) == 0);	127✔
35
36	const bool is_eq = (x == y);	127✔
37	const bool is_lt = (x < y);	127✔
38	const bool is_gt = (x > y);	127✔
39	const bool is_lte = (x <= y);	127✔
40	const bool is_gte = (x >= y);	127✔
41
42	if(is_eq) {	127✔
43	FUZZER_ASSERT_TRUE(d1.is_zero());	×
44	FUZZER_ASSERT_TRUE(d2.is_zero());	×
45	}
46
47	if(is_lte) {	127✔
48	FUZZER_ASSERT_TRUE(is_lt \|\| is_eq);	67✔
49	}
50
51	if(is_gte) {	127✔
52	FUZZER_ASSERT_TRUE(is_gt \|\| is_eq);	60✔
53	}
54
55	if(is_lt) {	127✔
56	FUZZER_ASSERT_TRUE(!is_gt);	67✔
57	FUZZER_ASSERT_TRUE(d1.is_nonzero());	67✔
58	FUZZER_ASSERT_TRUE(d2.is_nonzero());	134✔
59	FUZZER_ASSERT_TRUE(d1.is_negative());	67✔
60	FUZZER_ASSERT_TRUE(d2.is_positive());	67✔
61	}
62
63	if(is_gt) {	127✔
64	FUZZER_ASSERT_TRUE(!is_lt);	60✔
65	FUZZER_ASSERT_TRUE(d1.is_nonzero());	120✔
66	FUZZER_ASSERT_TRUE(d2.is_nonzero());	60✔
67	FUZZER_ASSERT_TRUE(d1.is_positive());	60✔
68	FUZZER_ASSERT_TRUE(d2.is_negative());	60✔
69	}
70	}	508✔

randombit / botan / 5356326050

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