15166935530

Committed 21 May 2025 01:49PM UTC coverage: 91.087% (-0.01%) from 91.099%

Build # 15166935530

Build Type

push

github

Committed by

web-flow

Commit Message

Merge pull request #4873 from reneme/feature/span_in_mode_padding

Use std::span for block cipher padding schemes

Run Details

96462 of 105901 relevant lines covered (91.09%)

12870063.96 hits per line

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85.37

/src/tests/test_pad.cpp

/*
* (C) 2016 René Korthaus, Rohde & Schwarz Cybersecurity
*
* Botan is released under the Simplified BSD License (see license.txt)
*/

#include "tests.h"

#if defined(BOTAN_HAS_CIPHER_MODE_PADDING)
   #include <botan/internal/mode_pad.h>
#endif

namespace Botan_Tests {

#if defined(BOTAN_HAS_CIPHER_MODE_PADDING)

class Cipher_Mode_Padding_Tests final : public Text_Based_Test {
   public:
      Cipher_Mode_Padding_Tests() : Text_Based_Test("pad.vec", "In,Blocksize", "Out") {}

      Test::Result run_one_test(const std::string& header, const VarMap& vars) override {
         const std::vector<uint8_t> input = vars.get_req_bin("In");
         const std::vector<uint8_t> expected = vars.get_opt_bin("Out");
         const size_t block_size = vars.get_req_sz("Blocksize");

         std::string algo = header;

         auto underscore = algo.find('_');
         if(underscore != std::string::npos) {
            if(algo.substr(underscore + 1, std::string::npos) != "Invalid") {
               throw Test_Error("Unexpected padding header " + header);
            }
            algo = algo.substr(0, underscore);
         }

         Test::Result result(algo);

         auto pad = Botan::BlockCipherModePaddingMethod::create(algo);

         if(!pad) {
            result.test_failure("Invalid padding method: " + algo);
            return result;
         }

         if(expected.empty()) {
            // This is an unpad an invalid input and ensure we reject
            if(pad->unpad(std::span{input}.last(block_size)) != block_size) {
               result.test_failure("Did not reject invalid padding", Botan::hex_encode(input));
            } else {
               result.test_success("Rejected invalid padding");
            }
         } else {
            // This is a pad plaintext and unpad valid padding round trip test
            Botan::secure_vector<uint8_t> buf(input.begin(), input.end());
            const size_t outlen = pad->output_length(buf.size(), block_size);
            if(!result.test_eq("output length", outlen, expected.size())) {
               return result;
            }
            buf.resize(outlen);
            pad->add_padding(buf, input.size() % block_size, block_size);
            result.test_eq("pad", buf, expected);

            buf.assign(expected.begin(), expected.end());

            const auto pad_bytes = [&] {
               if(algo == "NoPadding") {
                  const size_t maybe_partial = (buf.size() < block_size) ? buf.size() : block_size;
                  const auto no_padding = maybe_partial - pad->unpad(std::span{buf}.last(maybe_partial));
                  result.test_eq("no padding", no_padding, 0);
                  return no_padding;
               } else {
                  return block_size - pad->unpad(std::span{buf}.last(block_size));
               }
            }();

            buf.resize(buf.size() - pad_bytes);  // remove padding
            result.test_eq("unpad", buf, input);
         }

         return result;
      }
};

BOTAN_REGISTER_TEST("modes", "bc_pad", Cipher_Mode_Padding_Tests);

#endif

}  // namespace Botan_Tests

1	/*
2	* (C) 2016 René Korthaus, Rohde & Schwarz Cybersecurity
3	*
4	* Botan is released under the Simplified BSD License (see license.txt)
5	*/
6
7	#include "tests.h"
8
9	#if defined(BOTAN_HAS_CIPHER_MODE_PADDING)
10	#include <botan/internal/mode_pad.h>
11	#endif
12
13	namespace Botan_Tests {
14
15	#if defined(BOTAN_HAS_CIPHER_MODE_PADDING)
16
17	class Cipher_Mode_Padding_Tests final : public Text_Based_Test {	×
18	public:
19	Cipher_Mode_Padding_Tests() : Text_Based_Test("pad.vec", "In,Blocksize", "Out") {}	2✔
20
21	Test::Result run_one_test(const std::string& header, const VarMap& vars) override {	66✔
22	const std::vector<uint8_t> input = vars.get_req_bin("In");	66✔
23	const std::vector<uint8_t> expected = vars.get_opt_bin("Out");	66✔
24	const size_t block_size = vars.get_req_sz("Blocksize");	66✔
25
26	std::string algo = header;	66✔
27
28	auto underscore = algo.find('_');	66✔
29	if(underscore != std::string::npos) {	66✔
30	if(algo.substr(underscore + 1, std::string::npos) != "Invalid") {	28✔
31	throw Test_Error("Unexpected padding header " + header);	×
32	}
33	algo = algo.substr(0, underscore);	28✔
34	}
35
36	Test::Result result(algo);	132✔
37
38	auto pad = Botan::BlockCipherModePaddingMethod::create(algo);	66✔
39
40	if(!pad) {	66✔
41	result.test_failure("Invalid padding method: " + algo);	×
42	return result;	×
43	}
44
45	if(expected.empty()) {	66✔
46	// This is an unpad an invalid input and ensure we reject
47	if(pad->unpad(std::span{input}.last(block_size)) != block_size) {	28✔
48	result.test_failure("Did not reject invalid padding", Botan::hex_encode(input));	×
49	} else {
50	result.test_success("Rejected invalid padding");	56✔
51	}
52	} else {
53	// This is a pad plaintext and unpad valid padding round trip test
54	Botan::secure_vector<uint8_t> buf(input.begin(), input.end());	38✔
55	const size_t outlen = pad->output_length(buf.size(), block_size);	38✔
56	if(!result.test_eq("output length", outlen, expected.size())) {	38✔
57	return result;	×
58	}
59	buf.resize(outlen);	38✔
60	pad->add_padding(buf, input.size() % block_size, block_size);	38✔
61	result.test_eq("pad", buf, expected);	76✔
62
63	buf.assign(expected.begin(), expected.end());	38✔
64
65	const auto pad_bytes = [&] {	114✔
66	if(algo == "NoPadding") {	38✔
67	const size_t maybe_partial = (buf.size() < block_size) ? buf.size() : block_size;	5✔
68	const auto no_padding = maybe_partial - pad->unpad(std::span{buf}.last(maybe_partial));	5✔
69	result.test_eq("no padding", no_padding, 0);	5✔
70	return no_padding;	5✔
71	} else {
72	return block_size - pad->unpad(std::span{buf}.last(block_size));	33✔
73	}
74	}();	38✔
75
76	buf.resize(buf.size() - pad_bytes); // remove padding	38✔
77	result.test_eq("unpad", buf, input);	76✔
78	}	38✔
79
80	return result;
81	}	198✔
82	};
83
84	BOTAN_REGISTER_TEST("modes", "bc_pad", Cipher_Mode_Padding_Tests);
85
86	#endif
87
88	} // namespace Botan_Tests

randombit / botan / 15166935530

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