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Diffstat (limited to 'comm/third_party/botan/src/lib/pubkey/ecdh/ecdh.h')
-rw-r--r-- | comm/third_party/botan/src/lib/pubkey/ecdh/ecdh.h | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/comm/third_party/botan/src/lib/pubkey/ecdh/ecdh.h b/comm/third_party/botan/src/lib/pubkey/ecdh/ecdh.h new file mode 100644 index 0000000000..f88955ac40 --- /dev/null +++ b/comm/third_party/botan/src/lib/pubkey/ecdh/ecdh.h @@ -0,0 +1,106 @@ +/* +* ECDH +* (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_ECDH_KEY_H_ +#define BOTAN_ECDH_KEY_H_ + +#include <botan/ecc_key.h> + +namespace Botan { + +/** +* This class represents ECDH Public Keys. +*/ +class BOTAN_PUBLIC_API(2,0) ECDH_PublicKey : public virtual EC_PublicKey + { + public: + /** + * Create an ECDH public key. + * @param alg_id algorithm identifier + * @param key_bits DER encoded public key bits + */ + ECDH_PublicKey(const AlgorithmIdentifier& alg_id, + const std::vector<uint8_t>& key_bits) : + EC_PublicKey(alg_id, key_bits) {} + + /** + * Construct 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 + */ + ECDH_PublicKey(const EC_Group& dom_par, + const PointGFp& public_point) : + EC_PublicKey(dom_par, public_point) {} + + /** + * Get this keys algorithm name. + * @return this keys algorithm name + */ + std::string algo_name() const override { return "ECDH"; } + + /** + * @return public point value + */ + std::vector<uint8_t> public_value() const + { return public_point().encode(PointGFp::UNCOMPRESSED); } + + /** + * @return public point value + */ + std::vector<uint8_t> public_value(PointGFp::Compression_Type format) const + { return public_point().encode(format); } + + protected: + ECDH_PublicKey() = default; + }; + +/** +* This class represents ECDH Private Keys. +*/ +class BOTAN_PUBLIC_API(2,0) ECDH_PrivateKey final : public ECDH_PublicKey, + public EC_PrivateKey, + public PK_Key_Agreement_Key + { + public: + + /** + * Load a private key. + * @param alg_id the X.509 algorithm identifier + * @param key_bits ECPrivateKey bits + */ + ECDH_PrivateKey(const AlgorithmIdentifier& alg_id, + const secure_vector<uint8_t>& key_bits) : + EC_PrivateKey(alg_id, key_bits) {} + + /** + * Generate a new private key + * @param rng a random number generator + * @param domain parameters to used for this key + * @param x the private key; if zero, a new random key is generated + */ + ECDH_PrivateKey(RandomNumberGenerator& rng, + const EC_Group& domain, + const BigInt& x = 0) : + EC_PrivateKey(rng, domain, x) {} + + std::vector<uint8_t> public_value() const override + { return ECDH_PublicKey::public_value(PointGFp::UNCOMPRESSED); } + + std::vector<uint8_t> public_value(PointGFp::Compression_Type type) const + { return ECDH_PublicKey::public_value(type); } + + std::unique_ptr<PK_Ops::Key_Agreement> + create_key_agreement_op(RandomNumberGenerator& rng, + const std::string& params, + const std::string& provider) const override; + }; + +} + +#endif |