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%)

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Source File
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77.78

/src/cli/cli_rng.cpp

/*
* (C) 2015,2017 Jack Lloyd
*
* Botan is released under the Simplified BSD License (see license.txt)
*/

#include "cli.h"
#include <botan/entropy_src.h>
#include <botan/hex.h>
#include <botan/rng.h>
#include <botan/internal/parsing.h>

#if defined(BOTAN_HAS_AUTO_SEEDING_RNG)
   #include <botan/auto_rng.h>
#endif

#if defined(BOTAN_HAS_SYSTEM_RNG)
   #include <botan/system_rng.h>
#endif

#if defined(BOTAN_HAS_PROCESSOR_RNG)
   #include <botan/processor_rng.h>
#endif

#if defined(BOTAN_HAS_HMAC_DRBG)
   #include <botan/hmac_drbg.h>
#endif

namespace Botan_CLI {

std::shared_ptr<Botan::RandomNumberGenerator> cli_make_rng(const std::string& rng_type,
                                                           const std::string& hex_drbg_seed) {
#if defined(BOTAN_HAS_SYSTEM_RNG)
   if(rng_type == "system" || rng_type.empty()) {
      return std::make_shared<Botan::System_RNG>();
   }
#endif

   const std::vector<uint8_t> drbg_seed = Botan::hex_decode(hex_drbg_seed);

#if defined(BOTAN_HAS_AUTO_SEEDING_RNG)
   if(rng_type == "auto" || rng_type == "entropy" || rng_type.empty()) {
      std::shared_ptr<Botan::RandomNumberGenerator> rng;

      if(rng_type == "entropy") {
         rng = std::make_shared<Botan::AutoSeeded_RNG>(Botan::Entropy_Sources::global_sources());
      } else {
         rng = std::make_shared<Botan::AutoSeeded_RNG>();
      }

      if(!drbg_seed.empty()) {
         rng->add_entropy(drbg_seed.data(), drbg_seed.size());
      }
      return rng;
   }
#endif

#if defined(BOTAN_HAS_HMAC_DRBG) && defined(BOTAN_HAS_SHA2_32)
   if(rng_type == "drbg" || (rng_type.empty() && drbg_seed.empty() == false)) {
      auto mac = Botan::MessageAuthenticationCode::create_or_throw("HMAC(SHA-256)");
      auto rng = std::make_shared<Botan::HMAC_DRBG>(std::move(mac));
      rng->add_entropy(drbg_seed.data(), drbg_seed.size());

      if(rng->is_seeded() == false) {
         throw CLI_Error("For " + rng->name() + " a seed of at least " + std::to_string(rng->security_level() / 8) +
                         " bytes must be provided");
      }

      return rng;
   }
#endif

#if defined(BOTAN_HAS_PROCESSOR_RNG)
   if(rng_type == "rdrand" || rng_type == "cpu" || rng_type.empty()) {
      if(Botan::Processor_RNG::available()) {
         return std::make_shared<Botan::Processor_RNG>();
      } else if(rng_type.empty() == false) {
         throw CLI_Error("RNG instruction not supported on this processor");
      }
   }
#endif

   if(rng_type.empty()) {
      throw CLI_Error_Unsupported("No random number generator seems to be available in the current build");
   } else {
      throw CLI_Error_Unsupported("RNG", rng_type);
   }
}

class RNG final : public Command {
   public:
      RNG() : Command("rng --format=hex --system --rdrand --auto --entropy --drbg --drbg-seed= *bytes") {}

      std::string group() const override { return "misc"; }

      std::string description() const override { return "Sample random bytes from the specified rng"; }

      void go() override {
         const std::string format = get_arg("format");
         std::string type = get_arg("rng-type");

         if(type.empty()) {
            for(std::string flag : {"system", "rdrand", "auto", "entropy", "drbg"}) {
               if(flag_set(flag)) {
                  type = flag;
                  break;
               }
            }
         }

         const std::string drbg_seed = get_arg("drbg-seed");
         auto rng = cli_make_rng(type, drbg_seed);

         for(const std::string& req : get_arg_list("bytes")) {
            const size_t req_len = Botan::to_u32bit(req);
            const auto blob = rng->random_vec(req_len);

            if(format == "binary" || format == "raw") {
               output().write(reinterpret_cast<const char*>(blob.data()), blob.size());
            } else {
               output() << format_blob(format, blob) << "\n";
            }
         }
      }
};

BOTAN_REGISTER_COMMAND("rng", RNG);

}  // namespace Botan_CLI

1	/*
2	* (C) 2015,2017 Jack Lloyd
3	*
4	* Botan is released under the Simplified BSD License (see license.txt)
5	*/
6
7	#include "cli.h"
8	#include <botan/entropy_src.h>
9	#include <botan/hex.h>
10	#include <botan/rng.h>
11	#include <botan/internal/parsing.h>
12
13	#if defined(BOTAN_HAS_AUTO_SEEDING_RNG)
14	#include <botan/auto_rng.h>
15	#endif
16
17	#if defined(BOTAN_HAS_SYSTEM_RNG)
18	#include <botan/system_rng.h>
19	#endif
20
21	#if defined(BOTAN_HAS_PROCESSOR_RNG)
22	#include <botan/processor_rng.h>
23	#endif
24
25	#if defined(BOTAN_HAS_HMAC_DRBG)
26	#include <botan/hmac_drbg.h>
27	#endif
28
29	namespace Botan_CLI {
30
31	std::shared_ptr<Botan::RandomNumberGenerator> cli_make_rng(const std::string& rng_type,	146✔
32	const std::string& hex_drbg_seed) {
33	#if defined(BOTAN_HAS_SYSTEM_RNG)
34	if(rng_type == "system" \|\| rng_type.empty()) {	146✔
35	return std::make_shared<Botan::System_RNG>();	26✔
36	}
37	#endif
38
39	const std::vector<uint8_t> drbg_seed = Botan::hex_decode(hex_drbg_seed);	120✔
40
41	#if defined(BOTAN_HAS_AUTO_SEEDING_RNG)
42	if(rng_type == "auto" \|\| rng_type == "entropy" \|\| rng_type.empty()) {	120✔
43	std::shared_ptr<Botan::RandomNumberGenerator> rng;	2✔
44
45	if(rng_type == "entropy") {	2✔
46	rng = std::make_shared<Botan::AutoSeeded_RNG>(Botan::Entropy_Sources::global_sources());	1✔
47	} else {
48	rng = std::make_shared<Botan::AutoSeeded_RNG>();	1✔
49	}
50
51	if(!drbg_seed.empty()) {	2✔
52	rng->add_entropy(drbg_seed.data(), drbg_seed.size());	×
53	}
54	return rng;	2✔
55	}	2✔
56	#endif
57
58	#if defined(BOTAN_HAS_HMAC_DRBG) && defined(BOTAN_HAS_SHA2_32)
59	if(rng_type == "drbg" \|\| (rng_type.empty() && drbg_seed.empty() == false)) {	118✔
60	auto mac = Botan::MessageAuthenticationCode::create_or_throw("HMAC(SHA-256)");	118✔
61	auto rng = std::make_shared<Botan::HMAC_DRBG>(std::move(mac));	118✔
62	rng->add_entropy(drbg_seed.data(), drbg_seed.size());	118✔
63
64	if(rng->is_seeded() == false) {	118✔
65	throw CLI_Error("For " + rng->name() + " a seed of at least " + std::to_string(rng->security_level() / 8) +	×
66	" bytes must be provided");	×
67	}
68
69	return rng;	118✔
70	}	118✔
71	#endif
72
73	#if defined(BOTAN_HAS_PROCESSOR_RNG)
74	if(rng_type == "rdrand" \|\| rng_type == "cpu" \|\| rng_type.empty()) {	×
75	if(Botan::Processor_RNG::available()) {	×
76	return std::make_shared<Botan::Processor_RNG>();	×
77	} else if(rng_type.empty() == false) {	×
78	throw CLI_Error("RNG instruction not supported on this processor");	×
79	}
80	}
81	#endif
82
83	if(rng_type.empty()) {	×
84	throw CLI_Error_Unsupported("No random number generator seems to be available in the current build");	×
85	} else {
86	throw CLI_Error_Unsupported("RNG", rng_type);	×
87	}
88	}	146✔
89
90	class RNG final : public Command {
91	public:
92	RNG() : Command("rng --format=hex --system --rdrand --auto --entropy --drbg --drbg-seed= *bytes") {}	30✔
93
94	std::string group() const override { return "misc"; }	1✔
95
96	std::string description() const override { return "Sample random bytes from the specified rng"; }	1✔
97
98	void go() override {	14✔
99	const std::string format = get_arg("format");	14✔
100	std::string type = get_arg("rng-type");	14✔
101
102	if(type.empty()) {	14✔
103	for(std::string flag : {"system", "rdrand", "auto", "entropy", "drbg"}) {	8✔
104	if(flag_set(flag)) {	8✔
105	type = flag;	3✔
106	break;	3✔
107	}
108	}	8✔
109	}
110
111	const std::string drbg_seed = get_arg("drbg-seed");	14✔
112	auto rng = cli_make_rng(type, drbg_seed);	14✔
113
114	for(const std::string& req : get_arg_list("bytes")) {	30✔
115	const size_t req_len = Botan::to_u32bit(req);	16✔
116	const auto blob = rng->random_vec(req_len);	16✔
117
118	if(format == "binary" \|\| format == "raw") {	16✔
119	output().write(reinterpret_cast<const char*>(blob.data()), blob.size());	×
120	} else {
121	output() << format_blob(format, blob) << "\n";	32✔
122	}
123	}	30✔
124	}	25✔
125	};
126
127	BOTAN_REGISTER_COMMAND("rng", RNG);	15✔
128
129	} // namespace Botan_CLI

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