Coverage Report

Created: 2021-02-21 07:20

/src/botan/build/include/botan/curve25519.h
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/*
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* Curve25519
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* (C) 2014 Jack Lloyd
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*
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* Botan is released under the Simplified BSD License (see license.txt)
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*/
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#ifndef BOTAN_CURVE_25519_H_
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#define BOTAN_CURVE_25519_H_
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#include <botan/pk_keys.h>
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namespace Botan {
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class BOTAN_PUBLIC_API(2,0) Curve25519_PublicKey : public virtual Public_Key
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   {
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   public:
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      std::string algo_name() const override { return "Curve25519"; }
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      size_t estimated_strength() const override { return 128; }
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      size_t key_length() const override { return 255; }
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      bool check_key(RandomNumberGenerator& rng, bool strong) const override;
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      AlgorithmIdentifier algorithm_identifier() const override;
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      std::vector<uint8_t> public_key_bits() const override;
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      std::vector<uint8_t> public_value() const { return m_public; }
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      /**
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      * Create a Curve25519 Public Key.
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      * @param alg_id the X.509 algorithm identifier
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      * @param key_bits DER encoded public key bits
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      */
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      Curve25519_PublicKey(const AlgorithmIdentifier& alg_id,
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                           const std::vector<uint8_t>& key_bits);
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      /**
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      * Create a Curve25519 Public Key.
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      * @param pub 32-byte raw public key
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      */
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      explicit Curve25519_PublicKey(const std::vector<uint8_t>& pub) : m_public(pub) {}
Unexecuted instantiation: Botan::Curve25519_PublicKey::Curve25519_PublicKey(std::__1::vector<unsigned char, std::__1::allocator<unsigned char> > const&)
Botan::Curve25519_PublicKey::Curve25519_PublicKey(std::__1::vector<unsigned char, std::__1::allocator<unsigned char> > const&)
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      explicit Curve25519_PublicKey(const std::vector<uint8_t>& pub) : m_public(pub) {}
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      /**
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      * Create a Curve25519 Public Key.
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      * @param pub 32-byte raw public key
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      */
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      explicit Curve25519_PublicKey(const secure_vector<uint8_t>& pub) :
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         m_public(pub.begin(), pub.end()) {}
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   protected:
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      Curve25519_PublicKey() = default;
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      std::vector<uint8_t> m_public;
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   };
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class BOTAN_PUBLIC_API(2,0) Curve25519_PrivateKey final : public Curve25519_PublicKey,
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                                        public virtual Private_Key,
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                                        public virtual PK_Key_Agreement_Key
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   {
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   public:
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      /**
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      * Construct a private key from the specified parameters.
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      * @param alg_id the X.509 algorithm identifier
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      * @param key_bits PKCS #8 structure
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      */
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      Curve25519_PrivateKey(const AlgorithmIdentifier& alg_id,
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                            const secure_vector<uint8_t>& key_bits);
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      /**
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      * Generate a private key.
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      * @param rng the RNG to use
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      */
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      explicit Curve25519_PrivateKey(RandomNumberGenerator& rng);
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      /**
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      * Construct a private key from the specified parameters.
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      * @param secret_key the private key
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      */
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      explicit Curve25519_PrivateKey(const secure_vector<uint8_t>& secret_key);
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      std::vector<uint8_t> public_value() const override { return Curve25519_PublicKey::public_value(); }
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      secure_vector<uint8_t> agree(const uint8_t w[], size_t w_len) const;
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      const secure_vector<uint8_t>& get_x() const { return m_private; }
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      secure_vector<uint8_t> private_key_bits() const override;
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      std::unique_ptr<Public_Key> public_key() const override;
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      bool check_key(RandomNumberGenerator& rng, bool strong) const override;
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      std::unique_ptr<PK_Ops::Key_Agreement>
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         create_key_agreement_op(RandomNumberGenerator& rng,
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                                 const std::string& params,
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                                 const std::string& provider) const override;
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   private:
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      secure_vector<uint8_t> m_private;
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   };
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typedef Curve25519_PublicKey X25519_PublicKey;
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typedef Curve25519_PrivateKey X25519_PrivateKey;
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/*
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* The types above are just wrappers for curve25519_donna, plus defining
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* encodings for public and private keys.
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*/
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void BOTAN_PUBLIC_API(2,0) curve25519_donna(uint8_t mypublic[32],
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                                const uint8_t secret[32],
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                                const uint8_t basepoint[32]);
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/**
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* Exponentiate by the x25519 base point
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* @param mypublic output value
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* @param secret random scalar
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*/
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void BOTAN_PUBLIC_API(2,0) curve25519_basepoint(uint8_t mypublic[32],
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                                    const uint8_t secret[32]);
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}
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#endif