5111374265

Committed 29 May 2023 11:19AM UTC coverage: 92.227% (+0.5%) from 91.723%

Build # 5111374265

Build Type

push

github

Committed by

randombit

Commit Message

Next release will be 3.1.0. Update release notes

Run Details

75588 of 81959 relevant lines covered (92.23%)

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92.0

/src/lib/pubkey/keypair/keypair.cpp

/*
* Keypair Checks
* (C) 1999-2010 Jack Lloyd
*
* Botan is released under the Simplified BSD License (see license.txt)
*/

#include <botan/internal/keypair.h>

#include <botan/pubkey.h>
#include <botan/rng.h>

namespace Botan::KeyPair {

/*
* Check an encryption key pair for consistency
*/
bool encryption_consistency_check(RandomNumberGenerator& rng,
                                  const Private_Key& private_key,
                                  const Public_Key& public_key,
                                  std::string_view padding) {
   PK_Encryptor_EME encryptor(public_key, rng, padding);
   PK_Decryptor_EME decryptor(private_key, rng, padding);

   /*
   Weird corner case, if the key is too small to encrypt anything at
   all. This can happen with very small RSA keys with PSS
   */
   if(encryptor.maximum_input_size() == 0)
      return true;

   std::vector<uint8_t> plaintext;
   rng.random_vec(plaintext, encryptor.maximum_input_size() - 1);

   std::vector<uint8_t> ciphertext = encryptor.encrypt(plaintext, rng);
   if(ciphertext == plaintext)
      return false;

   std::vector<uint8_t> decrypted = unlock(decryptor.decrypt(ciphertext));

   return (plaintext == decrypted);
}

/*
* Check a signature key pair for consistency
*/
bool signature_consistency_check(RandomNumberGenerator& rng,
                                 const Private_Key& private_key,
                                 const Public_Key& public_key,
                                 std::string_view padding) {
   PK_Signer signer(private_key, rng, padding);
   PK_Verifier verifier(public_key, padding);

   std::vector<uint8_t> message(32);
   rng.randomize(message.data(), message.size());

   std::vector<uint8_t> signature;

   try {
      signature = signer.sign_message(message, rng);
   } catch(Encoding_Error&) { return false; }

   if(!verifier.verify_message(message, signature))
      return false;

   // Now try to check a corrupt signature, ensure it does not succeed
   ++signature[0];

   if(verifier.verify_message(message, signature))
      return false;

   return true;
}

}  // namespace Botan::KeyPair

1	/*
2	* Keypair Checks
3	* (C) 1999-2010 Jack Lloyd
4	*
5	* Botan is released under the Simplified BSD License (see license.txt)
6	*/
7
8	#include <botan/internal/keypair.h>
9
10	#include <botan/pubkey.h>
11	#include <botan/rng.h>
12
13	namespace Botan::KeyPair {
14
15	/*
16	* Check an encryption key pair for consistency
17	*/
18	bool encryption_consistency_check(RandomNumberGenerator& rng,	3✔
19	const Private_Key& private_key,
20	const Public_Key& public_key,
21	std::string_view padding) {
22	PK_Encryptor_EME encryptor(public_key, rng, padding);	3✔
23	PK_Decryptor_EME decryptor(private_key, rng, padding);	3✔
24
25	/*
26	Weird corner case, if the key is too small to encrypt anything at
27	all. This can happen with very small RSA keys with PSS
28	*/
29	if(encryptor.maximum_input_size() == 0)	3✔
30	return true;
31
32	std::vector<uint8_t> plaintext;	3✔
33	rng.random_vec(plaintext, encryptor.maximum_input_size() - 1);	3✔
34
35	std::vector<uint8_t> ciphertext = encryptor.encrypt(plaintext, rng);	3✔
36	if(ciphertext == plaintext)	3✔
37	return false;
38
39	std::vector<uint8_t> decrypted = unlock(decryptor.decrypt(ciphertext));	3✔
40
41	return (plaintext == decrypted);	3✔
42	}	9✔
43
44	/*
45	* Check a signature key pair for consistency
46	*/
47	bool signature_consistency_check(RandomNumberGenerator& rng,	28✔
48	const Private_Key& private_key,
49	const Public_Key& public_key,
50	std::string_view padding) {
51	PK_Signer signer(private_key, rng, padding);	28✔
52	PK_Verifier verifier(public_key, padding);	28✔
53
54	std::vector<uint8_t> message(32);	28✔
55	rng.randomize(message.data(), message.size());	28✔
56
57	std::vector<uint8_t> signature;	28✔
58
59	try {	28✔
60	signature = signer.sign_message(message, rng);	56✔
61	} catch(Encoding_Error&) { return false; }	×
62
63	if(!verifier.verify_message(message, signature))	28✔
64	return false;
65
66	// Now try to check a corrupt signature, ensure it does not succeed
67	++signature[0];	28✔
68
69	if(verifier.verify_message(message, signature))	28✔
70	return false;	×
71
72	return true;
73	}	56✔
74
75	} // namespace Botan::KeyPair

randombit / botan / 5111374265

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