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Diffstat (limited to 'botan/src/pubkey/eckaeg/eckaeg.h')
-rw-r--r-- | botan/src/pubkey/eckaeg/eckaeg.h | 137 |
1 files changed, 137 insertions, 0 deletions
diff --git a/botan/src/pubkey/eckaeg/eckaeg.h b/botan/src/pubkey/eckaeg/eckaeg.h new file mode 100644 index 0000000..31b6574 --- /dev/null +++ b/botan/src/pubkey/eckaeg/eckaeg.h @@ -0,0 +1,137 @@ +/* +* ECKAEG +* (C) 2007 Falko Strenzke, FlexSecure GmbH +* Manuel Hartl, FlexSecure GmbH +* (C) 2008 Jack Lloyd +* +* Distributed under the terms of the Botan license +*/ + +#ifndef BOTAN_ECKAEG_KEY_H__ +#define BOTAN_ECKAEG_KEY_H__ + +#include <botan/ecc_key.h> +#include <botan/eckaeg_core.h> + +namespace Botan { + +/** +* This class represents ECKAEG Public Keys. +*/ +class BOTAN_DLL ECKAEG_PublicKey : public virtual EC_PublicKey + { + public: + + /** + * Default constructor. Use this one if you want to later fill + * this object with data from an encoded key. + */ + ECKAEG_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 + */ + ECKAEG_PublicKey(const EC_Domain_Params& dom_par, + const PointGFp& public_point); + + /** + * Get this keys algorithm name. + * @result this keys algorithm name + */ + std::string algo_name() const { return "ECKAEG"; } + + /** + * 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 + { + if(!mp_dom_pars.get()) + throw Invalid_State("ECKAEG_PublicKey::max_input_bits(): domain parameters not set"); + + return mp_dom_pars->get_order().bits(); + } + + ECKAEG_PublicKey(ECKAEG_PublicKey const& other); + ECKAEG_PublicKey const& operator= (ECKAEG_PublicKey const& rhs); + + /** + * Make sure 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; + + protected: + void X509_load_hook(); + virtual void set_all_values(const ECKAEG_PublicKey& other); + + ECKAEG_Core m_eckaeg_core; + }; + +/** +* This class represents ECKAEG Private Keys. +*/ +class BOTAN_DLL ECKAEG_PrivateKey : public ECKAEG_PublicKey, + public EC_PrivateKey, + public PK_Key_Agreement_Key + { + public: + + /** + * Generate a new private key + * @param the domain parameters to used for this key + */ + ECKAEG_PrivateKey(RandomNumberGenerator& rng, + const EC_Domain_Params& dom_pars) + { + mp_dom_pars = std::auto_ptr<EC_Domain_Params>(new EC_Domain_Params(dom_pars)); + generate_private_key(rng); + mp_public_point->check_invariants(); + m_eckaeg_core = ECKAEG_Core(*mp_dom_pars, m_private_value, *mp_public_point); + } + + /** + * Default constructor. Use this one if you want to later fill this object with data + * from an encoded key. + */ + ECKAEG_PrivateKey() {} + ECKAEG_PrivateKey(ECKAEG_PrivateKey const& other); + ECKAEG_PrivateKey const& operator=(ECKAEG_PrivateKey const& rhs); + + MemoryVector<byte> public_value() const; + + void PKCS8_load_hook(bool = false); + + /** + * Derive a shared key with the other partys public key. + * @param key the other partys public key + * @param key_len the other partys public key + */ + SecureVector<byte> derive_key(const byte key[], u32bit key_len) const; + + /** + * Derive a shared key with the other partys public key. + * @param other the other partys public key + */ + SecureVector<byte> derive_key(const ECKAEG_PublicKey& other) 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; + + protected: + virtual void set_all_values(const ECKAEG_PrivateKey& other); + }; + +} + +#endif |