5134090420

Committed 31 May 2023 03:12PM UTC coverage: 91.721% (-0.3%) from 91.995%

Build # 5134090420

Build Type

push

github

Committed by

randombit

Commit Message

Merge GH #3565 Disable noisy/pointless pylint warnings

Run Details

76048 of 82912 relevant lines covered (91.72%)

11755290.1 hits per line

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91.43

/src/fuzzer/pkcs1.cpp

/*
* (C) 2015,2016 Jack Lloyd
*
* Botan is released under the Simplified BSD License (see license.txt)
*/

#include "fuzzers.h"

#include <botan/hex.h>
#include <botan/internal/eme_pkcs.h>

namespace {

std::vector<uint8_t> simple_pkcs1_unpad(const uint8_t in[], size_t len) {
   if(len < 10)
      throw Botan::Decoding_Error("bad len");

   if(in[0] != 0 || in[1] != 2)
      throw Botan::Decoding_Error("bad header field");

   for(size_t i = 2; i < len; ++i) {
      if(in[i] == 0) {
         if(i < 10)  // at least 8 padding bytes required
            throw Botan::Decoding_Error("insufficient padding bytes");
         return std::vector<uint8_t>(in + i + 1, in + len);
      }
   }

   throw Botan::Decoding_Error("delim not found");
}

}  // namespace

void fuzz(const uint8_t in[], size_t len) {
   static Botan::EME_PKCS1v15 pkcs1;

   Botan::secure_vector<uint8_t> lib_result;
   std::vector<uint8_t> ref_result;
   bool lib_rejected = false, ref_rejected = false;

   try {
      uint8_t valid_mask = 0;
      Botan::secure_vector<uint8_t> decoded = (static_cast<Botan::EME*>(&pkcs1))->unpad(valid_mask, in, len);

      if(valid_mask == 0)
         lib_rejected = true;
      else if(valid_mask == 0xFF)
         lib_rejected = false;
      else
         FUZZER_WRITE_AND_CRASH("Invalid valid_mask from unpad");
   } catch(Botan::Decoding_Error&) {
      lib_rejected = true;
   }

   try {
      ref_result = simple_pkcs1_unpad(in, len);
   } catch(Botan::Decoding_Error& e) {
      ref_rejected = true;
   }

   if(lib_rejected == true && ref_rejected == false) {
      FUZZER_WRITE_AND_CRASH("Library rejected input accepted by ref " << Botan::hex_encode(ref_result));
   } else if(ref_rejected == true && lib_rejected == false) {
      FUZZER_WRITE_AND_CRASH("Library accepted input rejected by ref " << Botan::hex_encode(lib_result));
   }
   // otherwise the two implementations agree
}

1	/*
2	* (C) 2015,2016 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/hex.h>
10	#include <botan/internal/eme_pkcs.h>
11
12	namespace {
13
14	std::vector<uint8_t> simple_pkcs1_unpad(const uint8_t in[], size_t len) {	48✔
15	if(len < 10)	48✔
16	throw Botan::Decoding_Error("bad len");	9✔
17
18	if(in[0] != 0 \|\| in[1] != 2)	39✔
19	throw Botan::Decoding_Error("bad header field");	16✔
20
21	for(size_t i = 2; i < len; ++i) {	1,128✔
22	if(in[i] == 0) {	1,124✔
23	if(i < 10) // at least 8 padding bytes required	19✔
24	throw Botan::Decoding_Error("insufficient padding bytes");	5✔
25	return std::vector<uint8_t>(in + i + 1, in + len);	14✔
26	}
27	}
28
29	throw Botan::Decoding_Error("delim not found");	4✔
30	}
31
32	} // namespace
33
34	void fuzz(const uint8_t in[], size_t len) {	48✔
35	static Botan::EME_PKCS1v15 pkcs1;	48✔
36
37	Botan::secure_vector<uint8_t> lib_result;	48✔
38	std::vector<uint8_t> ref_result;	48✔
39	bool lib_rejected = false, ref_rejected = false;	48✔
40
41	try {	48✔
42	uint8_t valid_mask = 0;	48✔
43	Botan::secure_vector<uint8_t> decoded = (static_cast<Botan::EME*>(&pkcs1))->unpad(valid_mask, in, len);	48✔
44
45	if(valid_mask == 0)	48✔
46	lib_rejected = true;
47	else if(valid_mask == 0xFF)	14✔
48	lib_rejected = false;
49	else
50	FUZZER_WRITE_AND_CRASH("Invalid valid_mask from unpad");	48✔
51	} catch(Botan::Decoding_Error&) {	48✔
52	lib_rejected = true;	×
53	}	×
54
55	try {	48✔
56	ref_result = simple_pkcs1_unpad(in, len);	62✔
57	} catch(Botan::Decoding_Error& e) {	34✔
58	ref_rejected = true;	34✔
59	}	34✔
60
61	if(lib_rejected == true && ref_rejected == false) {	48✔
62	FUZZER_WRITE_AND_CRASH("Library rejected input accepted by ref " << Botan::hex_encode(ref_result));	×
63	} else if(ref_rejected == true && lib_rejected == false) {	48✔
64	FUZZER_WRITE_AND_CRASH("Library accepted input rejected by ref " << Botan::hex_encode(lib_result));	48✔
65	}
66	// otherwise the two implementations agree
67	}	48✔

randombit / botan / 5134090420

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