5123321399

Committed 30 May 2023 04:06PM UTC coverage: 92.213% (+0.004%) from 92.209%

Build # 5123321399

Build Type

Pull #3558

github

Committed by

web-flow

Commit Message

Merge dd72f7389 into 057bcbc35

Pull Request Pull Request #3558: Add braces around all if/else statements

Run Details

75602 of 81986 relevant lines covered (92.21%)

11859779.3 hits per line

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

98.51

/src/lib/modes/cipher_mode.cpp

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

#include <botan/cipher_mode.h>

#include <botan/internal/parsing.h>
#include <botan/internal/scan_name.h>
#include <botan/internal/stream_mode.h>
#include <sstream>

#if defined(BOTAN_HAS_BLOCK_CIPHER)
   #include <botan/block_cipher.h>
#endif

#if defined(BOTAN_HAS_AEAD_MODES)
   #include <botan/aead.h>
#endif

#if defined(BOTAN_HAS_MODE_CBC)
   #include <botan/internal/cbc.h>
#endif

#if defined(BOTAN_HAS_MODE_CFB)
   #include <botan/internal/cfb.h>
#endif

#if defined(BOTAN_HAS_MODE_XTS)
   #include <botan/internal/xts.h>
#endif

#if defined(BOTAN_HAS_COMMONCRYPTO)
   #include <botan/internal/commoncrypto.h>
#endif

namespace Botan {

std::unique_ptr<Cipher_Mode> Cipher_Mode::create_or_throw(std::string_view algo,
                                                          Cipher_Dir direction,
                                                          std::string_view provider) {
   if(auto mode = Cipher_Mode::create(algo, direction, provider)) {
      return mode;
   }

   throw Lookup_Error("Cipher mode", algo, provider);
}

std::unique_ptr<Cipher_Mode> Cipher_Mode::create(std::string_view algo,
                                                 Cipher_Dir direction,
                                                 std::string_view provider) {
#if defined(BOTAN_HAS_COMMONCRYPTO)
   if(provider.empty() || provider == "commoncrypto") {
      auto commoncrypto_cipher = make_commoncrypto_cipher_mode(algo, direction);

      if(commoncrypto_cipher)
         return commoncrypto_cipher;

      if(!provider.empty())
         return std::unique_ptr<Cipher_Mode>();
   }
#endif

#if defined(BOTAN_HAS_STREAM_CIPHER)
   if(auto sc = StreamCipher::create(algo)) {
      return std::make_unique<Stream_Cipher_Mode>(std::move(sc));
   }
#endif

#if defined(BOTAN_HAS_AEAD_MODES)
   if(auto aead = AEAD_Mode::create(algo, direction)) {
      return aead;
   }
#endif

   if(algo.find('/') != std::string::npos) {
      const std::vector<std::string> algo_parts = split_on(algo, '/');
      std::string_view cipher_name = algo_parts[0];
      const std::vector<std::string> mode_info = parse_algorithm_name(algo_parts[1]);

      if(mode_info.empty()) {
         return std::unique_ptr<Cipher_Mode>();
      }

      std::ostringstream mode_name;

      mode_name << mode_info[0] << '(' << cipher_name;
      for(size_t i = 1; i < mode_info.size(); ++i) {
         mode_name << ',' << mode_info[i];
      }
      for(size_t i = 2; i < algo_parts.size(); ++i) {
         mode_name << ',' << algo_parts[i];
      }
      mode_name << ')';

      return Cipher_Mode::create(mode_name.str(), direction, provider);
   }

#if defined(BOTAN_HAS_BLOCK_CIPHER)

   SCAN_Name spec(algo);

   if(spec.arg_count() == 0) {
      return std::unique_ptr<Cipher_Mode>();
   }

   auto bc = BlockCipher::create(spec.arg(0), provider);

   if(!bc) {
      return std::unique_ptr<Cipher_Mode>();
   }

   #if defined(BOTAN_HAS_MODE_CBC)
   if(spec.algo_name() == "CBC") {
      const std::string padding = spec.arg(1, "PKCS7");

      if(padding == "CTS") {
         if(direction == Cipher_Dir::Encryption) {
            return std::make_unique<CTS_Encryption>(std::move(bc));
         } else {
            return std::make_unique<CTS_Decryption>(std::move(bc));
         }
      } else {
         auto pad = BlockCipherModePaddingMethod::create(padding);

         if(pad) {
            if(direction == Cipher_Dir::Encryption) {
               return std::make_unique<CBC_Encryption>(std::move(bc), std::move(pad));
            } else {
               return std::make_unique<CBC_Decryption>(std::move(bc), std::move(pad));
            }
         }
      }
   }
   #endif

   #if defined(BOTAN_HAS_MODE_XTS)
   if(spec.algo_name() == "XTS") {
      if(direction == Cipher_Dir::Encryption) {
         return std::make_unique<XTS_Encryption>(std::move(bc));
      } else {
         return std::make_unique<XTS_Decryption>(std::move(bc));
      }
   }
   #endif

   #if defined(BOTAN_HAS_MODE_CFB)
   if(spec.algo_name() == "CFB") {
      const size_t feedback_bits = spec.arg_as_integer(1, 8 * bc->block_size());
      if(direction == Cipher_Dir::Encryption) {
         return std::make_unique<CFB_Encryption>(std::move(bc), feedback_bits);
      } else {
         return std::make_unique<CFB_Decryption>(std::move(bc), feedback_bits);
      }
   }
   #endif

#endif

   return std::unique_ptr<Cipher_Mode>();
}

//static
std::vector<std::string> Cipher_Mode::providers(std::string_view algo_spec) {
   const std::vector<std::string>& possible = {"base", "commoncrypto"};
   std::vector<std::string> providers;
   for(auto&& prov : possible) {
      auto mode = Cipher_Mode::create(algo_spec, Cipher_Dir::Encryption, prov);
      if(mode) {
         providers.push_back(prov);  // available
      }
   }
   return providers;
}

}  // namespace Botan

1	/*
2	* Cipher Modes
3	* (C) 2015 Jack Lloyd
4	*
5	* Botan is released under the Simplified BSD License (see license.txt)
6	*/
7
8	#include <botan/cipher_mode.h>
9
10	#include <botan/internal/parsing.h>
11	#include <botan/internal/scan_name.h>
12	#include <botan/internal/stream_mode.h>
13	#include <sstream>
14
15	#if defined(BOTAN_HAS_BLOCK_CIPHER)
16	#include <botan/block_cipher.h>
17	#endif
18
19	#if defined(BOTAN_HAS_AEAD_MODES)
20	#include <botan/aead.h>
21	#endif
22
23	#if defined(BOTAN_HAS_MODE_CBC)
24	#include <botan/internal/cbc.h>
25	#endif
26
27	#if defined(BOTAN_HAS_MODE_CFB)
28	#include <botan/internal/cfb.h>
29	#endif
30
31	#if defined(BOTAN_HAS_MODE_XTS)
32	#include <botan/internal/xts.h>
33	#endif
34
35	#if defined(BOTAN_HAS_COMMONCRYPTO)
36	#include <botan/internal/commoncrypto.h>
37	#endif
38
39	namespace Botan {
40
41	std::unique_ptr<Cipher_Mode> Cipher_Mode::create_or_throw(std::string_view algo,
42	Cipher_Dir direction,
43	std::string_view provider) {
44	if(auto mode = Cipher_Mode::create(algo, direction, provider)) {
45	return mode;
46	}
47
48	throw Lookup_Error("Cipher mode", algo, provider);
49	}
50
51	std::unique_ptr<Cipher_Mode> Cipher_Mode::create(std::string_view algo,
52	Cipher_Dir direction,
53	std::string_view provider) {
54	#if defined(BOTAN_HAS_COMMONCRYPTO)
55	if(provider.empty() \|\| provider == "commoncrypto") {
56	auto commoncrypto_cipher = make_commoncrypto_cipher_mode(algo, direction);
57
58	if(commoncrypto_cipher)
59	return commoncrypto_cipher;
60
61	if(!provider.empty())
62	return std::unique_ptr<Cipher_Mode>();
63	}
64	#endif
65
66	#if defined(BOTAN_HAS_STREAM_CIPHER)
67	if(auto sc = StreamCipher::create(algo)) {
68	return std::make_unique<Stream_Cipher_Mode>(std::move(sc));
69	}
70	#endif
71
72	#if defined(BOTAN_HAS_AEAD_MODES)
73	if(auto aead = AEAD_Mode::create(algo, direction)) {
74	return aead;
75	}
76	#endif
77
78	if(algo.find('/') != std::string::npos) {
79	const std::vector<std::string> algo_parts = split_on(algo, '/');
80	std::string_view cipher_name = algo_parts[0];
81	const std::vector<std::string> mode_info = parse_algorithm_name(algo_parts[1]);
82
83	if(mode_info.empty()) {
84	return std::unique_ptr<Cipher_Mode>();
85	}
86
87	std::ostringstream mode_name;
88
89	mode_name << mode_info[0] << '(' << cipher_name;
90	for(size_t i = 1; i < mode_info.size(); ++i) {
91	mode_name << ',' << mode_info[i];
92	}
93	for(size_t i = 2; i < algo_parts.size(); ++i) {
94	mode_name << ',' << algo_parts[i];
95	}
96	mode_name << ')';
97
98	return Cipher_Mode::create(mode_name.str(), direction, provider);
99	}
100
101	#if defined(BOTAN_HAS_BLOCK_CIPHER)
102
103	SCAN_Name spec(algo);
104
105	if(spec.arg_count() == 0) {
106	return std::unique_ptr<Cipher_Mode>();
107	}
108
109	auto bc = BlockCipher::create(spec.arg(0), provider);
110
111	if(!bc) {
112	return std::unique_ptr<Cipher_Mode>();
113	}
114
115	#if defined(BOTAN_HAS_MODE_CBC)
116	if(spec.algo_name() == "CBC") {
117	const std::string padding = spec.arg(1, "PKCS7");
118
119	if(padding == "CTS") {
120	if(direction == Cipher_Dir::Encryption) {
121	return std::make_unique<CTS_Encryption>(std::move(bc));
122	} else {
123	return std::make_unique<CTS_Decryption>(std::move(bc));
124	}
125	} else {
126	auto pad = BlockCipherModePaddingMethod::create(padding);
127
128	if(pad) {
129	if(direction == Cipher_Dir::Encryption) {
130	return std::make_unique<CBC_Encryption>(std::move(bc), std::move(pad));
131	} else {
132	return std::make_unique<CBC_Decryption>(std::move(bc), std::move(pad));
133	}
134	}
135	}
136	}
137	#endif
138
139	#if defined(BOTAN_HAS_MODE_XTS)
140	if(spec.algo_name() == "XTS") {
141	if(direction == Cipher_Dir::Encryption) {
142	return std::make_unique<XTS_Encryption>(std::move(bc));
143	} else {
144	return std::make_unique<XTS_Decryption>(std::move(bc));
145	}
146	}
147	#endif
148
149	#if defined(BOTAN_HAS_MODE_CFB)
150	if(spec.algo_name() == "CFB") {
151	const size_t feedback_bits = spec.arg_as_integer(1, 8 * bc->block_size());
152	if(direction == Cipher_Dir::Encryption) {
153	return std::make_unique<CFB_Encryption>(std::move(bc), feedback_bits);
154	} else {
155	return std::make_unique<CFB_Decryption>(std::move(bc), feedback_bits);
156	}
157	}
158	#endif
159
160	#endif
161
162	return std::unique_ptr<Cipher_Mode>();
163	}
164
165	//static
166	std::vector<std::string> Cipher_Mode::providers(std::string_view algo_spec) {
167	const std::vector<std::string>& possible = {"base", "commoncrypto"};
168	std::vector<std::string> providers;
169	for(auto&& prov : possible) {
170	auto mode = Cipher_Mode::create(algo_spec, Cipher_Dir::Encryption, prov);
171	if(mode) {
172	providers.push_back(prov); // available
173	}
174	}
175	return providers;
176	}
177
178	} // namespace Botan

randombit / botan / 5123321399

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