23982215831

Committed 04 Apr 2026 03:48PM UTC coverage: 89.459% (+0.005%) from 89.454%

Build # 23982215831

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Pull #5521

github

Committed by

web-flow

Commit Message

Merge 68cd8aa36 into 417709dd7

Pull Request Pull Request #5521: Rollup of small fixes

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/src/tests/test_modes.cpp

/*
* (C) 2014,2015,2017 Jack Lloyd
* (C) 2016 Daniel Neus, Rohde & Schwarz Cybersecurity
* (C) 2018 Ribose Inc
*
* Botan is released under the Simplified BSD License (see license.txt)
*/

#include "tests.h"

#if defined(BOTAN_HAS_CIPHER_MODES)
   #include <botan/cipher_mode.h>
   #include <botan/exceptn.h>
   #include <botan/hex.h>
   #include <botan/rng.h>
#endif

namespace Botan_Tests {

namespace {

#if defined(BOTAN_HAS_CIPHER_MODES)

class Cipher_Mode_Tests final : public Text_Based_Test {
   public:
      Cipher_Mode_Tests() : Text_Based_Test("modes", "Key,Nonce,In,Out") {}

      std::vector<std::string> possible_providers(const std::string& algo) override {
         return provider_filter(Botan::Cipher_Mode::providers(algo));
      }

      Test::Result run_one_test(const std::string& algo, const VarMap& vars) override {
         const std::vector<uint8_t> key = vars.get_req_bin("Key");
         const std::vector<uint8_t> nonce = vars.get_req_bin("Nonce");
         const std::vector<uint8_t> input = vars.get_req_bin("In");
         const std::vector<uint8_t> expected = vars.get_req_bin("Out");

         Test::Result result(algo);

         const std::vector<std::string> providers = possible_providers(algo);

         if(providers.empty()) {
            result.note_missing("cipher mode " + algo);
            return result;
         }

         for(auto&& provider_ask : providers) {
            auto enc = Botan::Cipher_Mode::create(algo, Botan::Cipher_Dir::Encryption, provider_ask);

            auto dec = Botan::Cipher_Mode::create(algo, Botan::Cipher_Dir::Decryption, provider_ask);

            if(!enc || !dec) {
               if(enc) {
                  result.test_failure("Provider " + provider_ask + " has encrypt but not decrypt");
               }
               if(dec) {
                  result.test_failure("Provider " + provider_ask + " has decrypt but not encrypt");
               }
               result.note_missing(algo);
               return result;
            }

            result.test_sz_eq(
               "enc and dec granularity is the same", enc->update_granularity(), dec->update_granularity());

            result.test_sz_gt("update granularity is non-zero", enc->update_granularity(), 0);

            result.test_sz_eq(
               "enc and dec ideal granularity is the same", enc->ideal_granularity(), dec->ideal_granularity());

            result.test_sz_gt(
               "ideal granularity is at least update granularity", enc->ideal_granularity(), enc->update_granularity());

            result.test_is_true("ideal granularity is a multiple of update granularity",
                                enc->ideal_granularity() % enc->update_granularity() == 0);

            try {
               test_mode(result, algo, provider_ask, "encryption", *enc, key, nonce, input, expected, this->rng());
            } catch(Botan::Exception& e) {
               result.test_failure("Encryption tests failed", e.what());
            }

            try {
               // NOLINTNEXTLINE(*-suspicious-call-argument) intentionally swapping ptext and ctext arguments here
               test_mode(result, algo, provider_ask, "decryption", *dec, key, nonce, expected, input, this->rng());
            } catch(Botan::Exception& e) {
               result.test_failure("Decryption tests failed", e.what());
            }
         }

         return result;
      }

   private:
      static void test_mode(Test::Result& result,
                            const std::string& algo,
                            const std::string& provider,
                            const std::string& direction,
                            Botan::Cipher_Mode& mode,
                            const std::vector<uint8_t>& key,
                            const std::vector<uint8_t>& nonce,
                            const std::vector<uint8_t>& input,
                            const std::vector<uint8_t>& expected,
                            Botan::RandomNumberGenerator& rng) {
         const bool is_cbc = (algo.find("/CBC") != std::string::npos);
         const bool is_ctr = (algo.find("CTR") != std::string::npos);

         result.test_str_eq("name", mode.name(), algo);

         // Some modes report base even if got from another provider
         if(mode.provider() != "base") {
            result.test_str_eq("provider", mode.provider(), provider);
         }

         result.test_is_false("mode not authenticated", mode.authenticated());

         const size_t update_granularity = mode.update_granularity();
         const size_t min_final_bytes = mode.minimum_final_size();

         // FFI currently requires this, so assure it is true for all modes
         result.test_sz_gt("buffer sizes ok", mode.ideal_granularity(), min_final_bytes);

         result.test_is_false("key not set", mode.has_keying_material());

         result.test_throws<Botan::Invalid_State>("Unkeyed object throws", [&]() {
            Botan::secure_vector<uint8_t> bad(min_final_bytes);
            mode.finish(bad);
         });

         if(is_cbc) {
            // can't test equal due to CBC padding

            if(direction == "encryption") {
               result.test_sz_lte("output_length", mode.output_length(input.size()), expected.size());
            } else {
               result.test_sz_gte("output_length", mode.output_length(input.size()), expected.size());
            }
         } else {
            // assume all other modes are not expanding (currently true)
            result.test_sz_eq("output_length", mode.output_length(input.size()), expected.size());
         }

         result.test_is_true("default nonce size is allowed", mode.valid_nonce_length(mode.default_nonce_length()));

         // Test that disallowed nonce sizes result in an exception
         static constexpr size_t large_nonce_size = 65000;
         result.test_is_false("Large nonce not allowed", mode.valid_nonce_length(large_nonce_size));
         result.test_throws<Botan::Invalid_Argument>("Large nonce causes exception",
                                                     [&mode]() { mode.start(nullptr, large_nonce_size); });

         Botan::secure_vector<uint8_t> garbage = rng.random_vec(update_granularity);
         Botan::secure_vector<uint8_t> ultimate_garbage = rng.random_vec(min_final_bytes);

         // Test to make sure reset() resets what we need it to
         result.test_throws<Botan::Invalid_State>("Cannot process data (update) until key is set",
                                                  [&]() { mode.update(garbage); });
         result.test_throws<Botan::Invalid_State>("Cannot process data (finish) until key is set",
                                                  [&]() { mode.finish(ultimate_garbage); });

         mode.set_key(mutate_vec(key, rng));

         if(!is_ctr) {
            result.test_throws<Botan::Invalid_State>("Cannot process data until nonce is set",
                                                     [&]() { mode.update(garbage); });
         }

         mode.start(mutate_vec(nonce, rng));
         mode.reset();

         if(!is_ctr) {
            result.test_throws<Botan::Invalid_State>("Cannot process data until nonce is set (after start/reset)",
                                                     [&]() { mode.update(garbage); });
         }

         mode.start(mutate_vec(nonce, rng));
         mode.update(garbage);

         mode.reset();

         mode.set_key(key);
         result.test_is_true("key is set", mode.has_keying_material());
         mode.start(nonce);

         Botan::secure_vector<uint8_t> buf;

         buf.assign(input.begin(), input.end());
         mode.finish(buf);
         result.test_bin_eq(direction + " all-in-one", buf, expected);

         // Test finish() with non-zero offset
         {
            const size_t test_offset = 1 + rng.next_byte() % 32;
            buf.assign(test_offset, 0xAB);
            buf.insert(buf.end(), input.begin(), input.end());

            mode.start(nonce);
            mode.finish(buf, test_offset);

            for(size_t i = 0; i < test_offset; ++i) {
               result.test_u8_eq(direction + " prefix byte", buf[i], 0xAB);
            }
            result.test_bin_eq(direction + " finish with offset", std::span{buf}.subspan(test_offset), expected);
         }

         // Test update() + finish() with non-zero offset
         if(input.size() >= update_granularity + min_final_bytes) {
            const size_t test_offset = 1 + rng.next_byte() % 32;
            const size_t max_blocks = (input.size() - min_final_bytes) / update_granularity;
            const size_t bytes_to_update = max_blocks * update_granularity;

            buf.assign(test_offset, 0xAB);
            buf.insert(buf.end(), input.begin(), input.begin() + bytes_to_update);

            Botan::secure_vector<uint8_t> final_buf(test_offset, 0xAB);
            final_buf.insert(final_buf.end(), input.begin() + bytes_to_update, input.end());

            mode.start(nonce);
            mode.update(buf, test_offset);
            mode.finish(final_buf, test_offset);

            for(size_t i = 0; i < test_offset; ++i) {
               result.test_u8_eq(direction + " update offset prefix byte", buf[i], 0xAB);
               result.test_u8_eq(direction + " finish offset prefix byte", final_buf[i], 0xAB);
            }

            Botan::secure_vector<uint8_t> combined;
            combined.insert(combined.end(), buf.begin() + test_offset, buf.end());
            combined.insert(combined.end(), final_buf.begin() + test_offset, final_buf.end());
            result.test_bin_eq(direction + " update+finish with offset", combined, expected);
         }

         // additionally test update() and process() if possible
         if(input.size() >= update_granularity + min_final_bytes) {
            const size_t max_blocks_to_process = (input.size() - min_final_bytes) / update_granularity;
            const size_t bytes_to_process = max_blocks_to_process * update_granularity;

            // test update, 1 block at a time
            if(max_blocks_to_process > 1) {
               Botan::secure_vector<uint8_t> block(update_granularity);
               buf.clear();

               mode.start(nonce);
               for(size_t i = 0; i != max_blocks_to_process; ++i) {
                  block.assign(input.data() + i * update_granularity, input.data() + (i + 1) * update_granularity);

                  mode.update(block);
                  buf += block;
               }

               Botan::secure_vector<uint8_t> last_bits(input.data() + bytes_to_process, input.data() + input.size());
               mode.finish(last_bits);
               buf += last_bits;

               result.test_bin_eq(direction + " update-1", buf, expected);
            }

            // test update with maximum length input
            buf.assign(input.data(), input.data() + bytes_to_process);
            Botan::secure_vector<uint8_t> last_bits(input.data() + bytes_to_process, input.data() + input.size());

            mode.start(nonce);
            mode.update(buf);
            mode.finish(last_bits);

            buf += last_bits;

            result.test_bin_eq(direction + " update-all", buf, expected);

            // test process with maximum length input
            mode.start(nonce);
            buf.assign(input.begin(), input.end());

            const size_t bytes_written = mode.process(buf.data(), bytes_to_process);

            result.test_sz_eq("correct number of bytes processed", bytes_written, bytes_to_process);

            mode.finish(buf, bytes_to_process);
            result.test_bin_eq(direction + " process", buf, expected);
         }

         mode.clear();
         result.test_is_false("key is not set", mode.has_keying_material());

         result.test_throws<Botan::Invalid_State>("Unkeyed object throws after clear", [&]() {
            Botan::secure_vector<uint8_t> bad(min_final_bytes);
            mode.finish(bad);
         });
      }
};

BOTAN_REGISTER_SMOKE_TEST("modes", "cipher_modes", Cipher_Mode_Tests);

class Cipher_Mode_IV_Carry_Tests final : public Test {
   public:
      std::vector<Test::Result> run() override {
         std::vector<Test::Result> results;
         results.push_back(test_cbc_iv_carry());
         results.push_back(test_cfb_iv_carry());
         results.push_back(test_ctr_iv_carry());
         return results;
      }

   private:
      static Test::Result test_cbc_iv_carry() {
         Test::Result result("CBC IV carry");

   #if defined(BOTAN_HAS_MODE_CBC) && defined(BOTAN_HAS_AES)
         std::unique_ptr<Botan::Cipher_Mode> enc(
            Botan::Cipher_Mode::create("AES-128/CBC/PKCS7", Botan::Cipher_Dir::Encryption));
         std::unique_ptr<Botan::Cipher_Mode> dec(
            Botan::Cipher_Mode::create("AES-128/CBC/PKCS7", Botan::Cipher_Dir::Decryption));

         const std::vector<uint8_t> key(16, 0xAA);
         const std::vector<uint8_t> iv(16, 0xAA);

         Botan::secure_vector<uint8_t> msg1 =
            Botan::hex_decode_locked("446F6E27742075736520706C61696E20434243206D6F6465");
         Botan::secure_vector<uint8_t> msg2 = Botan::hex_decode_locked("49562063617272796F766572");
         Botan::secure_vector<uint8_t> msg3 = Botan::hex_decode_locked("49562063617272796F76657232");

         enc->set_key(key);
         dec->set_key(key);

         enc->start(iv);
         enc->finish(msg1);
         result.test_bin_eq(
            "First ciphertext", msg1, "9BDD7300E0CB61CA71FFF957A71605DB6836159C36781246A1ADF50982757F4B");

         enc->start();
         enc->finish(msg2);

         result.test_bin_eq("Second ciphertext", msg2, "AA8D682958A4A044735DAC502B274DB2");

         enc->start();
         enc->finish(msg3);

         result.test_bin_eq("Third ciphertext", msg3, "1241B9976F73051BCF809525D6E86C25");

         dec->start(iv);
         dec->finish(msg1);

         dec->start();
         dec->finish(msg2);

         dec->start();
         dec->finish(msg3);
         result.test_bin_eq("Third plaintext", msg3, "49562063617272796F76657232");

   #endif
         return result;
      }

      static Test::Result test_cfb_iv_carry() {
         Test::Result result("CFB IV carry");
   #if defined(BOTAN_HAS_MODE_CFB) && defined(BOTAN_HAS_AES)
         std::unique_ptr<Botan::Cipher_Mode> enc(
            Botan::Cipher_Mode::create("AES-128/CFB(8)", Botan::Cipher_Dir::Encryption));
         std::unique_ptr<Botan::Cipher_Mode> dec(
            Botan::Cipher_Mode::create("AES-128/CFB(8)", Botan::Cipher_Dir::Decryption));

         const std::vector<uint8_t> key(16, 0xAA);
         const std::vector<uint8_t> iv(16, 0xAB);

         Botan::secure_vector<uint8_t> msg1 = Botan::hex_decode_locked("ABCDEF01234567");
         Botan::secure_vector<uint8_t> msg2 = Botan::hex_decode_locked("0000123456ABCDEF");
         Botan::secure_vector<uint8_t> msg3 = Botan::hex_decode_locked("012345");

         enc->set_key(key);
         dec->set_key(key);

         enc->start(iv);
         enc->finish(msg1);
         result.test_bin_eq("First ciphertext", msg1, "a51522387c4c9b");

         enc->start();
         enc->finish(msg2);

         result.test_bin_eq("Second ciphertext", msg2, "105457dc2e0649d4");

         enc->start();
         enc->finish(msg3);

         result.test_bin_eq("Third ciphertext", msg3, "53bd65");

         dec->start(iv);
         dec->finish(msg1);
         result.test_bin_eq("First plaintext", msg1, "ABCDEF01234567");

         dec->start();
         dec->finish(msg2);
         result.test_bin_eq("Second plaintext", msg2, "0000123456ABCDEF");

         dec->start();
         dec->finish(msg3);
         result.test_bin_eq("Third plaintext", msg3, "012345");
   #endif
         return result;
      }

      static Test::Result test_ctr_iv_carry() {
         Test::Result result("CTR IV carry");
   #if defined(BOTAN_HAS_CTR_BE) && defined(BOTAN_HAS_AES)

         std::unique_ptr<Botan::Cipher_Mode> enc(
            Botan::Cipher_Mode::create("AES-128/CTR-BE", Botan::Cipher_Dir::Encryption));
         std::unique_ptr<Botan::Cipher_Mode> dec(
            Botan::Cipher_Mode::create("AES-128/CTR-BE", Botan::Cipher_Dir::Decryption));

         const std::vector<uint8_t> key = Botan::hex_decode("2B7E151628AED2A6ABF7158809CF4F3C");
         const std::vector<uint8_t> iv = Botan::hex_decode("F0F1F2F3F4F5F6F7F8F9FAFBFCFDFEFF");

         enc->set_key(key);
         dec->set_key(key);

         const std::vector<std::string> exp_ciphertext = {
            "EC",
            "8CDF",
            "739860",
            "7CB0F2D2",
            "1675EA9EA1",
            "E4362B7C3C67",
            "73516318A077D7",
            "FC5073AE6A2CC378",
            "7889374FBEB4C81B17",
            "BA6C44E89C399FF0F198C",
         };

         for(size_t i = 1; i != 10; ++i) {
            if(i == 1) {
               enc->start(iv);
               dec->start(iv);
            } else {
               enc->start();
               dec->start();
            }

            Botan::secure_vector<uint8_t> msg(i, 0);
            enc->finish(msg);

            result.test_bin_eq("Ciphertext", msg, exp_ciphertext[i - 1]);

            dec->finish(msg);

            for(const uint8_t b : msg) {
               result.test_u8_eq("Plaintext zeros", b, 0);
            }
         }
   #endif
         return result;
      }
};

BOTAN_REGISTER_TEST("modes", "iv_carryover", Cipher_Mode_IV_Carry_Tests);

#endif

}  // namespace

}  // namespace Botan_Tests

1	/*
2	* (C) 2014,2015,2017 Jack Lloyd
3	* (C) 2016 Daniel Neus, Rohde & Schwarz Cybersecurity
4	* (C) 2018 Ribose Inc
5	*
6	* Botan is released under the Simplified BSD License (see license.txt)
7	*/
8
9	#include "tests.h"
10
11	#if defined(BOTAN_HAS_CIPHER_MODES)
12	#include <botan/cipher_mode.h>
13	#include <botan/exceptn.h>
14	#include <botan/hex.h>
15	#include <botan/rng.h>
16	#endif
17
18	namespace Botan_Tests {
19
20	namespace {
21
22	#if defined(BOTAN_HAS_CIPHER_MODES)
23
24	class Cipher_Mode_Tests final : public Text_Based_Test {	×
25	public:
26	Cipher_Mode_Tests() : Text_Based_Test("modes", "Key,Nonce,In,Out") {}	2✔
27
28	std::vector<std::string> possible_providers(const std::string& algo) override {	1,246✔
29	return provider_filter(Botan::Cipher_Mode::providers(algo));	1,246✔
30	}
31
32	Test::Result run_one_test(const std::string& algo, const VarMap& vars) override {	1,246✔
33	const std::vector<uint8_t> key = vars.get_req_bin("Key");	1,246✔
34	const std::vector<uint8_t> nonce = vars.get_req_bin("Nonce");	1,246✔
35	const std::vector<uint8_t> input = vars.get_req_bin("In");	1,246✔
36	const std::vector<uint8_t> expected = vars.get_req_bin("Out");	1,246✔
37
38	Test::Result result(algo);	1,246✔
39
40	const std::vector<std::string> providers = possible_providers(algo);	1,246✔
41
42	if(providers.empty()) {	1,246✔
43	result.note_missing("cipher mode " + algo);	×
44	return result;	×
45	}
46
47	for(auto&& provider_ask : providers) {	2,492✔
48	auto enc = Botan::Cipher_Mode::create(algo, Botan::Cipher_Dir::Encryption, provider_ask);	1,246✔
49
50	auto dec = Botan::Cipher_Mode::create(algo, Botan::Cipher_Dir::Decryption, provider_ask);	1,246✔
51
52	if(!enc \|\| !dec) {	1,246✔
53	if(enc) {	×
54	result.test_failure("Provider " + provider_ask + " has encrypt but not decrypt");	×
55	}
56	if(dec) {	×
57	result.test_failure("Provider " + provider_ask + " has decrypt but not encrypt");	×
58	}
59	result.note_missing(algo);	×
60	return result;	×
61	}
62
63	result.test_sz_eq(	1,246✔
64	"enc and dec granularity is the same", enc->update_granularity(), dec->update_granularity());	1,246✔
65
66	result.test_sz_gt("update granularity is non-zero", enc->update_granularity(), 0);	1,246✔
67
68	result.test_sz_eq(	1,246✔
69	"enc and dec ideal granularity is the same", enc->ideal_granularity(), dec->ideal_granularity());	1,246✔
70
71	result.test_sz_gt(	1,246✔
72	"ideal granularity is at least update granularity", enc->ideal_granularity(), enc->update_granularity());	1,246✔
73
74	result.test_is_true("ideal granularity is a multiple of update granularity",	1,246✔
75	enc->ideal_granularity() % enc->update_granularity() == 0);	1,246✔
76
77	try {	1,246✔
78	test_mode(result, algo, provider_ask, "encryption", *enc, key, nonce, input, expected, this->rng());	2,492✔
79	} catch(Botan::Exception& e) {	×
80	result.test_failure("Encryption tests failed", e.what());	×
81	}	×
82
83	try {	1,246✔
84	// NOLINTNEXTLINE(*-suspicious-call-argument) intentionally swapping ptext and ctext arguments here
85	test_mode(result, algo, provider_ask, "decryption", *dec, key, nonce, expected, input, this->rng());	2,492✔
86	} catch(Botan::Exception& e) {	×
87	result.test_failure("Decryption tests failed", e.what());	×
88	}	×
89	}	2,492✔
90
91	return result;
92	}	6,230✔
93
94	private:
95	static void test_mode(Test::Result& result,	2,492✔
96	const std::string& algo,
97	const std::string& provider,
98	const std::string& direction,
99	Botan::Cipher_Mode& mode,
100	const std::vector<uint8_t>& key,
101	const std::vector<uint8_t>& nonce,
102	const std::vector<uint8_t>& input,
103	const std::vector<uint8_t>& expected,
104	Botan::RandomNumberGenerator& rng) {
105	const bool is_cbc = (algo.find("/CBC") != std::string::npos);	2,492✔
106	const bool is_ctr = (algo.find("CTR") != std::string::npos);	2,492✔
107
108	result.test_str_eq("name", mode.name(), algo);	2,492✔
109
110	// Some modes report base even if got from another provider
111	if(mode.provider() != "base") {	2,492✔
112	result.test_str_eq("provider", mode.provider(), provider);	×
113	}
114
115	result.test_is_false("mode not authenticated", mode.authenticated());	2,492✔
116
117	const size_t update_granularity = mode.update_granularity();	2,492✔
118	const size_t min_final_bytes = mode.minimum_final_size();	2,492✔
119
120	// FFI currently requires this, so assure it is true for all modes
121	result.test_sz_gt("buffer sizes ok", mode.ideal_granularity(), min_final_bytes);	2,492✔
122
123	result.test_is_false("key not set", mode.has_keying_material());	2,492✔
124
125	result.test_throws<Botan::Invalid_State>("Unkeyed object throws", [&]() {	2,492✔
126	Botan::secure_vector<uint8_t> bad(min_final_bytes);	2,492✔
127	mode.finish(bad);	2,492✔
128	});	×
129
130	if(is_cbc) {	2,492✔
131	// can't test equal due to CBC padding
132
133	if(direction == "encryption") {	658✔
134	result.test_sz_lte("output_length", mode.output_length(input.size()), expected.size());	329✔
135	} else {
136	result.test_sz_gte("output_length", mode.output_length(input.size()), expected.size());	329✔
137	}
138	} else {
139	// assume all other modes are not expanding (currently true)
140	result.test_sz_eq("output_length", mode.output_length(input.size()), expected.size());	1,834✔
141	}
142
143	result.test_is_true("default nonce size is allowed", mode.valid_nonce_length(mode.default_nonce_length()));	2,492✔
144
145	// Test that disallowed nonce sizes result in an exception
146	static constexpr size_t large_nonce_size = 65000;	2,492✔
147	result.test_is_false("Large nonce not allowed", mode.valid_nonce_length(large_nonce_size));	2,492✔
148	result.test_throws<Botan::Invalid_Argument>("Large nonce causes exception",	2,492✔
149	[&mode]() { mode.start(nullptr, large_nonce_size); });	4,984✔
150
151	Botan::secure_vector<uint8_t> garbage = rng.random_vec(update_granularity);	2,492✔
152	Botan::secure_vector<uint8_t> ultimate_garbage = rng.random_vec(min_final_bytes);	2,492✔
153
154	// Test to make sure reset() resets what we need it to
155	result.test_throws<Botan::Invalid_State>("Cannot process data (update) until key is set",	2,492✔
156	[&]() { mode.update(garbage); });	4,984✔
157	result.test_throws<Botan::Invalid_State>("Cannot process data (finish) until key is set",	2,492✔
158	[&]() { mode.finish(ultimate_garbage); });	4,984✔
159
160	mode.set_key(mutate_vec(key, rng));	2,492✔
161
162	if(!is_ctr) {	2,492✔
163	result.test_throws<Botan::Invalid_State>("Cannot process data until nonce is set",	2,488✔
164	[&]() { mode.update(garbage); });	4,976✔
165	}
166
167	mode.start(mutate_vec(nonce, rng));	2,492✔
168	mode.reset();	2,492✔
169
170	if(!is_ctr) {	2,492✔
171	result.test_throws<Botan::Invalid_State>("Cannot process data until nonce is set (after start/reset)",	2,488✔
172	[&]() { mode.update(garbage); });	4,976✔
173	}
174
175	mode.start(mutate_vec(nonce, rng));	2,492✔
176	mode.update(garbage);	2,492✔
177
178	mode.reset();	2,492✔
179
180	mode.set_key(key);	2,492✔
181	result.test_is_true("key is set", mode.has_keying_material());	2,492✔
182	mode.start(nonce);	2,492✔
183
184	Botan::secure_vector<uint8_t> buf;	2,492✔
185
186	buf.assign(input.begin(), input.end());	2,492✔
187	mode.finish(buf);	2,492✔
188	result.test_bin_eq(direction + " all-in-one", buf, expected);	2,492✔
189
190	// Test finish() with non-zero offset
191	{	2,492✔
192	const size_t test_offset = 1 + rng.next_byte() % 32;	2,492✔
193	buf.assign(test_offset, 0xAB);	2,492✔
194	buf.insert(buf.end(), input.begin(), input.end());	2,492✔
195
196	mode.start(nonce);	2,492✔
197	mode.finish(buf, test_offset);	2,492✔
198
199	for(size_t i = 0; i < test_offset; ++i) {	43,761✔
200	result.test_u8_eq(direction + " prefix byte", buf[i], 0xAB);	82,538✔
201	}
202	result.test_bin_eq(direction + " finish with offset", std::span{buf}.subspan(test_offset), expected);	2,492✔
203	}
204
205	// Test update() + finish() with non-zero offset
206	if(input.size() >= update_granularity + min_final_bytes) {	2,492✔
207	const size_t test_offset = 1 + rng.next_byte() % 32;	2,167✔
208	const size_t max_blocks = (input.size() - min_final_bytes) / update_granularity;	2,167✔
209	const size_t bytes_to_update = max_blocks * update_granularity;	2,167✔
210
211	buf.assign(test_offset, 0xAB);	2,167✔
212	buf.insert(buf.end(), input.begin(), input.begin() + bytes_to_update);	2,167✔
213
214	Botan::secure_vector<uint8_t> final_buf(test_offset, 0xAB);	2,167✔
215	final_buf.insert(final_buf.end(), input.begin() + bytes_to_update, input.end());	2,167✔
216
217	mode.start(nonce);	2,167✔
218	mode.update(buf, test_offset);	2,167✔
219	mode.finish(final_buf, test_offset);	2,167✔
220
221	for(size_t i = 0; i < test_offset; ++i) {	37,379✔
222	result.test_u8_eq(direction + " update offset prefix byte", buf[i], 0xAB);	35,212✔
223	result.test_u8_eq(direction + " finish offset prefix byte", final_buf[i], 0xAB);	70,424✔
224	}
225
226	Botan::secure_vector<uint8_t> combined;	2,167✔
227	combined.insert(combined.end(), buf.begin() + test_offset, buf.end());	2,167✔
228	combined.insert(combined.end(), final_buf.begin() + test_offset, final_buf.end());	2,167✔
229	result.test_bin_eq(direction + " update+finish with offset", combined, expected);	4,334✔
230	}	4,334✔
231
232	// additionally test update() and process() if possible
233	if(input.size() >= update_granularity + min_final_bytes) {	2,492✔
234	const size_t max_blocks_to_process = (input.size() - min_final_bytes) / update_granularity;	2,167✔
235	const size_t bytes_to_process = max_blocks_to_process * update_granularity;	2,167✔
236
237	// test update, 1 block at a time
238	if(max_blocks_to_process > 1) {	2,167✔
239	Botan::secure_vector<uint8_t> block(update_granularity);	1,787✔
240	buf.clear();	1,787✔
241
242	mode.start(nonce);	1,787✔
243	for(size_t i = 0; i != max_blocks_to_process; ++i) {	15,607✔
244	block.assign(input.data() + i * update_granularity, input.data() + (i + 1) * update_granularity);	13,820✔
245
246	mode.update(block);	13,820✔
247	buf += block;	13,820✔
248	}
249
250	Botan::secure_vector<uint8_t> last_bits(input.data() + bytes_to_process, input.data() + input.size());	1,787✔
251	mode.finish(last_bits);	1,787✔
252	buf += last_bits;	1,787✔
253
254	result.test_bin_eq(direction + " update-1", buf, expected);	3,574✔
255	}	3,574✔
256
257	// test update with maximum length input
258	buf.assign(input.data(), input.data() + bytes_to_process);	2,167✔
259	Botan::secure_vector<uint8_t> last_bits(input.data() + bytes_to_process, input.data() + input.size());	2,167✔
260
261	mode.start(nonce);	2,167✔
262	mode.update(buf);	2,167✔
263	mode.finish(last_bits);	2,167✔
264
265	buf += last_bits;	2,167✔
266
267	result.test_bin_eq(direction + " update-all", buf, expected);	2,167✔
268
269	// test process with maximum length input
270	mode.start(nonce);	2,167✔
271	buf.assign(input.begin(), input.end());	2,167✔
272
273	const size_t bytes_written = mode.process(buf.data(), bytes_to_process);	2,167✔
274
275	result.test_sz_eq("correct number of bytes processed", bytes_written, bytes_to_process);	2,167✔
276
277	mode.finish(buf, bytes_to_process);	2,167✔
278	result.test_bin_eq(direction + " process", buf, expected);	4,334✔
279	}	2,167✔
280
281	mode.clear();	2,492✔
282	result.test_is_false("key is not set", mode.has_keying_material());	2,492✔
283
284	result.test_throws<Botan::Invalid_State>("Unkeyed object throws after clear", [&]() {	2,492✔
285	Botan::secure_vector<uint8_t> bad(min_final_bytes);	2,492✔
286	mode.finish(bad);	2,492✔
287	});	×
288	}	9,525✔
289	};
290
291	BOTAN_REGISTER_SMOKE_TEST("modes", "cipher_modes", Cipher_Mode_Tests);
292
293	class Cipher_Mode_IV_Carry_Tests final : public Test {	1✔
294	public:
295	std::vector<Test::Result> run() override {	1✔
296	std::vector<Test::Result> results;	1✔
297	results.push_back(test_cbc_iv_carry());	2✔
298	results.push_back(test_cfb_iv_carry());	2✔
299	results.push_back(test_ctr_iv_carry());	2✔
300	return results;	1✔
301	}	×
302
303	private:
304	static Test::Result test_cbc_iv_carry() {	1✔
305	Test::Result result("CBC IV carry");	1✔
306
307	#if defined(BOTAN_HAS_MODE_CBC) && defined(BOTAN_HAS_AES)
308	std::unique_ptr<Botan::Cipher_Mode> enc(	1✔
309	Botan::Cipher_Mode::create("AES-128/CBC/PKCS7", Botan::Cipher_Dir::Encryption));	1✔
310	std::unique_ptr<Botan::Cipher_Mode> dec(	1✔
311	Botan::Cipher_Mode::create("AES-128/CBC/PKCS7", Botan::Cipher_Dir::Decryption));	1✔
312
313	const std::vector<uint8_t> key(16, 0xAA);	1✔
314	const std::vector<uint8_t> iv(16, 0xAA);	1✔
315
316	Botan::secure_vector<uint8_t> msg1 =	1✔
317	Botan::hex_decode_locked("446F6E27742075736520706C61696E20434243206D6F6465");	1✔
318	Botan::secure_vector<uint8_t> msg2 = Botan::hex_decode_locked("49562063617272796F766572");	1✔
319	Botan::secure_vector<uint8_t> msg3 = Botan::hex_decode_locked("49562063617272796F76657232");	1✔
320
321	enc->set_key(key);	1✔
322	dec->set_key(key);	1✔
323
324	enc->start(iv);	1✔
325	enc->finish(msg1);	1✔
326	result.test_bin_eq(	1✔
327	"First ciphertext", msg1, "9BDD7300E0CB61CA71FFF957A71605DB6836159C36781246A1ADF50982757F4B");
328
329	enc->start();	1✔
330	enc->finish(msg2);	1✔
331
332	result.test_bin_eq("Second ciphertext", msg2, "AA8D682958A4A044735DAC502B274DB2");	1✔
333
334	enc->start();	1✔
335	enc->finish(msg3);	1✔
336
337	result.test_bin_eq("Third ciphertext", msg3, "1241B9976F73051BCF809525D6E86C25");	1✔
338
339	dec->start(iv);	1✔
340	dec->finish(msg1);	1✔
341
342	dec->start();	1✔
343	dec->finish(msg2);	1✔
344
345	dec->start();	1✔
346	dec->finish(msg3);	1✔
347	result.test_bin_eq("Third plaintext", msg3, "49562063617272796F76657232");	1✔
348
349	#endif
350	return result;	1✔
351	}	7✔
352
353	static Test::Result test_cfb_iv_carry() {	1✔
354	Test::Result result("CFB IV carry");	1✔
355	#if defined(BOTAN_HAS_MODE_CFB) && defined(BOTAN_HAS_AES)
356	std::unique_ptr<Botan::Cipher_Mode> enc(	1✔
357	Botan::Cipher_Mode::create("AES-128/CFB(8)", Botan::Cipher_Dir::Encryption));	1✔
358	std::unique_ptr<Botan::Cipher_Mode> dec(	1✔
359	Botan::Cipher_Mode::create("AES-128/CFB(8)", Botan::Cipher_Dir::Decryption));	1✔
360
361	const std::vector<uint8_t> key(16, 0xAA);	1✔
362	const std::vector<uint8_t> iv(16, 0xAB);	1✔
363
364	Botan::secure_vector<uint8_t> msg1 = Botan::hex_decode_locked("ABCDEF01234567");	1✔
365	Botan::secure_vector<uint8_t> msg2 = Botan::hex_decode_locked("0000123456ABCDEF");	1✔
366	Botan::secure_vector<uint8_t> msg3 = Botan::hex_decode_locked("012345");	1✔
367
368	enc->set_key(key);	1✔
369	dec->set_key(key);	1✔
370
371	enc->start(iv);	1✔
372	enc->finish(msg1);	1✔
373	result.test_bin_eq("First ciphertext", msg1, "a51522387c4c9b");	1✔
374
375	enc->start();	1✔
376	enc->finish(msg2);	1✔
377
378	result.test_bin_eq("Second ciphertext", msg2, "105457dc2e0649d4");	1✔
379
380	enc->start();	1✔
381	enc->finish(msg3);	1✔
382
383	result.test_bin_eq("Third ciphertext", msg3, "53bd65");	1✔
384
385	dec->start(iv);	1✔
386	dec->finish(msg1);	1✔
387	result.test_bin_eq("First plaintext", msg1, "ABCDEF01234567");	1✔
388
389	dec->start();	1✔
390	dec->finish(msg2);	1✔
391	result.test_bin_eq("Second plaintext", msg2, "0000123456ABCDEF");	1✔
392
393	dec->start();	1✔
394	dec->finish(msg3);	1✔
395	result.test_bin_eq("Third plaintext", msg3, "012345");	1✔
396	#endif
397	return result;	1✔
398	}	7✔
399
400	static Test::Result test_ctr_iv_carry() {	1✔
401	Test::Result result("CTR IV carry");	1✔
402	#if defined(BOTAN_HAS_CTR_BE) && defined(BOTAN_HAS_AES)
403
404	std::unique_ptr<Botan::Cipher_Mode> enc(	1✔
405	Botan::Cipher_Mode::create("AES-128/CTR-BE", Botan::Cipher_Dir::Encryption));	1✔
406	std::unique_ptr<Botan::Cipher_Mode> dec(	1✔
407	Botan::Cipher_Mode::create("AES-128/CTR-BE", Botan::Cipher_Dir::Decryption));	1✔
408
409	const std::vector<uint8_t> key = Botan::hex_decode("2B7E151628AED2A6ABF7158809CF4F3C");	1✔
410	const std::vector<uint8_t> iv = Botan::hex_decode("F0F1F2F3F4F5F6F7F8F9FAFBFCFDFEFF");	1✔
411
412	enc->set_key(key);	1✔
413	dec->set_key(key);	1✔
414
415	const std::vector<std::string> exp_ciphertext = {	1✔
416	"EC",
417	"8CDF",
418	"739860",
419	"7CB0F2D2",
420	"1675EA9EA1",
421	"E4362B7C3C67",
422	"73516318A077D7",
423	"FC5073AE6A2CC378",
424	"7889374FBEB4C81B17",
425	"BA6C44E89C399FF0F198C",
426	};	1✔
427
428	for(size_t i = 1; i != 10; ++i) {	10✔
429	if(i == 1) {	9✔
430	enc->start(iv);	1✔
431	dec->start(iv);	1✔
432	} else {
433	enc->start();	8✔
434	dec->start();	8✔
435	}
436
437	Botan::secure_vector<uint8_t> msg(i, 0);	9✔
438	enc->finish(msg);	9✔
439
440	result.test_bin_eq("Ciphertext", msg, exp_ciphertext[i - 1]);	9✔
441
442	dec->finish(msg);	9✔
443
444	for(const uint8_t b : msg) {	54✔
445	result.test_u8_eq("Plaintext zeros", b, 0);	45✔
446	}
447	}	9✔
448	#endif
449	return result;	2✔
450	}	5✔
451	};
452
453	BOTAN_REGISTER_TEST("modes", "iv_carryover", Cipher_Mode_IV_Carry_Tests);
454
455	#endif
456
457	} // namespace
458
459	} // namespace Botan_Tests

randombit / botan / 23982215831

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