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Diffstat (limited to 'src/pubkey/gost_3410/gost_3410.h')
-rw-r--r-- | src/pubkey/gost_3410/gost_3410.h | 164 |
1 files changed, 164 insertions, 0 deletions
diff --git a/src/pubkey/gost_3410/gost_3410.h b/src/pubkey/gost_3410/gost_3410.h new file mode 100644 index 000000000..460aca9bf --- /dev/null +++ b/src/pubkey/gost_3410/gost_3410.h @@ -0,0 +1,164 @@ +/* +* GOST 34.10-2001 +* (C) 2007 Falko Strenzke, FlexSecure GmbH +* Manuel Hartl, FlexSecure GmbH +* (C) 2008-2009 Jack Lloyd +* +* Distributed under the terms of the Botan license +*/ + +#ifndef BOTAN_GOST_3410_KEY_H__ +#define BOTAN_GOST_3410_KEY_H__ + +#include <botan/ecc_key.h> + +namespace Botan { + +/** +* This class represents GOST_3410 Public Keys. +*/ +class BOTAN_DLL GOST_3410_PublicKey : public virtual EC_PublicKey, + public PK_Verifying_wo_MR_Key + { + public: + + /** + * Get this keys algorithm name. + * @result this keys algorithm name + */ + std::string algo_name() const { return "GOST-34.10"; } + + /** + * Get the maximum number of bits allowed to be fed to this key. + * This is the bitlength of the order of the base point. + + * @result the maximum number of input bits + */ + u32bit max_input_bits() const; + + u32bit message_parts() const { return 2; } + + u32bit message_part_size() const + { return mp_dom_pars->get_order().bytes(); } + + /** + * Verify a message with this key. + * @param message the byte array containing the message + * @param mess_len the number of bytes in the message byte array + * @param signature the byte array containing the signature + * @param sig_len the number of bytes in the signature byte array + */ + bool verify(const byte message[], u32bit mess_len, + const byte signature[], u32bit sig_len) const; + + /** + * Default constructor. Use this one if you want to later fill + * this object with data from an encoded key. + */ + GOST_3410_PublicKey() {} + + /** + * 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 + */ + GOST_3410_PublicKey(const EC_Domain_Params& dom_par, + const PointGFp& public_point); // sets core + + GOST_3410_PublicKey const& operator=(const GOST_3410_PublicKey& rhs); + + GOST_3410_PublicKey(const GOST_3410_PublicKey& other); + + /** + * Set the domain parameters of this key. This function has to be + * used when a key encoded without domain parameters was decoded into + * this key. Otherwise it will not be able to verify a signature. + * @param dom_pars the domain_parameters associated with this key + * @throw Invalid_Argument if the point was found not to be satisfying the + * curve equation of the provided domain parameters + * or if this key already has domain parameters set + * and these are differing from those given as the parameter + */ + void set_domain_parameters(const EC_Domain_Params& dom_pars); + + /** + * Ensure that the public point and domain parameters of this key are set. + * @throw Invalid_State if either of the two data members is not set + */ + virtual void affirm_init() const; + + /** + * Get an x509_encoder that can be used to encode this key. + * @result an x509_encoder for this key + */ + X509_Encoder* x509_encoder() const; + + /** + * Get an x509_decoder that can be used to decode a stored key into + * this key. + * @result an x509_decoder for this key + */ + X509_Decoder* x509_decoder(); + + protected: + void X509_load_hook(); + void set_all_values(const GOST_3410_PublicKey& other); + }; + +/** +* This class represents GOST_3410 Private Keys +*/ +class BOTAN_DLL GOST_3410_PrivateKey : public GOST_3410_PublicKey, + public EC_PrivateKey, + public PK_Signing_Key + { + public: + /** + * Default constructor. Use this one if you want to later fill + * this object with data from an encoded key. + */ + GOST_3410_PrivateKey() {} + + /** + * Generate a new private key + * @param the domain parameters to used for this key + */ + GOST_3410_PrivateKey(RandomNumberGenerator& rng, + const EC_Domain_Params& domain); + + /** + * Load a private key + * @param domain parameters + * @param x the private key + */ + GOST_3410_PrivateKey(const EC_Domain_Params& domain, const BigInt& x); + + GOST_3410_PrivateKey(const GOST_3410_PrivateKey& other); + GOST_3410_PrivateKey const& operator=(const GOST_3410_PrivateKey& rhs); + + /** + * Sign a message with this key. + * @param message the byte array representing the message to be signed + * @param mess_len the length of the message byte array + * @result the signature + */ + + SecureVector<byte> sign(const byte message[], u32bit mess_len, + RandomNumberGenerator& rng) const; + + /** + * Make sure that the public key parts of this object are set + * (calls EC_PublicKey::affirm_init()) as well as the private key + * value. + * @throw Invalid_State if the above conditions are not satisfied + */ + virtual void affirm_init() const; + + private: + void set_all_values(const GOST_3410_PrivateKey& other); + void PKCS8_load_hook(bool = false); + }; + +} + +#endif |