/src/Botan-3.4.0/build/include/public/botan/ecdsa.h

Source (jump to first uncovered line)
/*
* ECDSA
* (C) 2007 Falko Strenzke, FlexSecure GmbH
*          Manuel Hartl, FlexSecure GmbH
* (C) 2008-2010 Jack Lloyd
*
* Botan is released under the Simplified BSD License (see license.txt)
*/

#ifndef BOTAN_ECDSA_KEY_H_
#define BOTAN_ECDSA_KEY_H_

#include <botan/ecc_key.h>

namespace Botan {

/**
* This class represents ECDSA Public Keys.
*/
class BOTAN_PUBLIC_API(2, 0) ECDSA_PublicKey : public virtual EC_PublicKey {
   public:
      /**
      * Create a public key from a given public point.
      * @param dom_par the domain parameters associated with this key
      * @param public_point the public point defining this key
      */
      ECDSA_PublicKey(const EC_Group& dom_par, const EC_Point& public_point) : EC_PublicKey(dom_par, public_point) {}

      /**
      * Load a public key.
      * @param alg_id the X.509 algorithm identifier
      * @param key_bits DER encoded public key bits
      */
      ECDSA_PublicKey(const AlgorithmIdentifier& alg_id, std::span<const uint8_t> key_bits) :
            EC_PublicKey(alg_id, key_bits) {}

      /**
      * Recover a public key from a signature/msg pair
      * See SEC section 4.6.1
      * @param group the elliptic curve group
      * @param msg the message
      * @param r the r paramter of the signature
      * @param s the s paramter of the signature
      * @param v the recovery ID
      */
      ECDSA_PublicKey(
         const EC_Group& group, const std::vector<uint8_t>& msg, const BigInt& r, const BigInt& s, uint8_t v);

      /**
      * Get this keys algorithm name.
      * @result this keys algorithm name ("ECDSA")
      */
      std::string algo_name() const override { return "ECDSA"; }

      size_t message_parts() const override { return 2; }

      size_t message_part_size() const override { return domain().get_order().bytes(); }

      bool supports_operation(PublicKeyOperation op) const override { return (op == PublicKeyOperation::Signature); }

      std::unique_ptr<Private_Key> generate_another(RandomNumberGenerator& rng) const override;

      uint8_t recovery_param(const std::vector<uint8_t>& msg, const BigInt& r, const BigInt& s) const;

      std::unique_ptr<PK_Ops::Verification> create_verification_op(std::string_view params,
                                                                   std::string_view provider) const override;

      std::unique_ptr<PK_Ops::Verification> create_x509_verification_op(const AlgorithmIdentifier& signature_algorithm,
                                                                        std::string_view provider) const override;

   protected:
      ECDSA_PublicKey() = default;
};

/**
* This class represents ECDSA Private Keys
*/

BOTAN_DIAGNOSTIC_PUSH
BOTAN_DIAGNOSTIC_IGNORE_INHERITED_VIA_DOMINANCE

class BOTAN_PUBLIC_API(2, 0) ECDSA_PrivateKey final : public ECDSA_PublicKey,
                                                      public EC_PrivateKey {
   public:
      /**
      * Load a private key
      * @param alg_id the X.509 algorithm identifier
      * @param key_bits ECPrivateKey bits
      */
      ECDSA_PrivateKey(const AlgorithmIdentifier& alg_id, std::span<const uint8_t> key_bits) :
            EC_PrivateKey(alg_id, key_bits) {}

      /**
      * Create a private key.
      * @param rng a random number generator
      * @param domain parameters to used for this key
      * @param x the private key (if zero, generate a new random key)
      */
      ECDSA_PrivateKey(RandomNumberGenerator& rng, const EC_Group& domain, const BigInt& x = BigInt::zero()) :
            EC_PrivateKey(rng, domain, x) {}

      bool check_key(RandomNumberGenerator& rng, bool) const override;

      std::unique_ptr<Public_Key> public_key() const override;

      std::unique_ptr<PK_Ops::Signature> create_signature_op(RandomNumberGenerator& rng,
                                                             std::string_view params,
                                                             std::string_view provider) const override;
};

BOTAN_DIAGNOSTIC_POP

}  // namespace Botan

#endif

Line	Count	Source (jump to first uncovered line)
1		/*
2		* ECDSA
3		* (C) 2007 Falko Strenzke, FlexSecure GmbH
4		* Manuel Hartl, FlexSecure GmbH
5		* (C) 2008-2010 Jack Lloyd
6		*
7		* Botan is released under the Simplified BSD License (see license.txt)
8		*/
9
10		#ifndef BOTAN_ECDSA_KEY_H_
11		#define BOTAN_ECDSA_KEY_H_
12
13		#include <botan/ecc_key.h>
14
15		namespace Botan {
16
17		/**
18		* This class represents ECDSA Public Keys.
19		*/
20		class BOTAN_PUBLIC_API(2, 0) ECDSA_PublicKey : public virtual EC_PublicKey {
21		public:
22		/**
23		* Create a public key from a given public point.
24		* @param dom_par the domain parameters associated with this key
25		* @param public_point the public point defining this key
26		*/
27	58.2k	ECDSA_PublicKey(const EC_Group& dom_par, const EC_Point& public_point) : EC_PublicKey(dom_par, public_point) {}
28
29		/**
30		* Load a public key.
31		* @param alg_id the X.509 algorithm identifier
32		* @param key_bits DER encoded public key bits
33		*/
34		ECDSA_PublicKey(const AlgorithmIdentifier& alg_id, std::span<const uint8_t> key_bits) :
35	0	EC_PublicKey(alg_id, key_bits) {}
36
37		/**
38		* Recover a public key from a signature/msg pair
39		* See SEC section 4.6.1
40		* @param group the elliptic curve group
41		* @param msg the message
42		* @param r the r paramter of the signature
43		* @param s the s paramter of the signature
44		* @param v the recovery ID
45		*/
46		ECDSA_PublicKey(
47		const EC_Group& group, const std::vector<uint8_t>& msg, const BigInt& r, const BigInt& s, uint8_t v);
48
49		/**
50		* Get this keys algorithm name.
51		* @result this keys algorithm name ("ECDSA")
52		*/
53	0	std::string algo_name() const override { return "ECDSA"; }
54
55	58.2k	size_t message_parts() const override { return 2; }
56
57	58.2k	size_t message_part_size() const override { return domain().get_order().bytes(); }
58
59	0	bool supports_operation(PublicKeyOperation op) const override { return (op == PublicKeyOperation::Signature); }
60
61		std::unique_ptr<Private_Key> generate_another(RandomNumberGenerator& rng) const override;
62
63		uint8_t recovery_param(const std::vector<uint8_t>& msg, const BigInt& r, const BigInt& s) const;
64
65		std::unique_ptr<PK_Ops::Verification> create_verification_op(std::string_view params,
66		std::string_view provider) const override;
67
68		std::unique_ptr<PK_Ops::Verification> create_x509_verification_op(const AlgorithmIdentifier& signature_algorithm,
69		std::string_view provider) const override;
70
71		protected:
72	0	ECDSA_PublicKey() = default;
73		};
74
75		/**
76		* This class represents ECDSA Private Keys
77		*/
78
79		BOTAN_DIAGNOSTIC_PUSH
80		BOTAN_DIAGNOSTIC_IGNORE_INHERITED_VIA_DOMINANCE
81
82		class BOTAN_PUBLIC_API(2, 0) ECDSA_PrivateKey final : public ECDSA_PublicKey,
83		public EC_PrivateKey {
84		public:
85		/**
86		* Load a private key
87		* @param alg_id the X.509 algorithm identifier
88		* @param key_bits ECPrivateKey bits
89		*/
90		ECDSA_PrivateKey(const AlgorithmIdentifier& alg_id, std::span<const uint8_t> key_bits) :
91	0	EC_PrivateKey(alg_id, key_bits) {}
92
93		/**
94		* Create a private key.
95		* @param rng a random number generator
96		* @param domain parameters to used for this key
97		* @param x the private key (if zero, generate a new random key)
98		*/
99		ECDSA_PrivateKey(RandomNumberGenerator& rng, const EC_Group& domain, const BigInt& x = BigInt::zero()) :
100	0	EC_PrivateKey(rng, domain, x) {}
101
102		bool check_key(RandomNumberGenerator& rng, bool) const override;
103
104		std::unique_ptr<Public_Key> public_key() const override;
105
106		std::unique_ptr<PK_Ops::Signature> create_signature_op(RandomNumberGenerator& rng,
107		std::string_view params,
108		std::string_view provider) const override;
109		};
110
111		BOTAN_DIAGNOSTIC_POP
112
113		} // namespace Botan
114
115		#endif

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Created: 2025-07-11 06:15