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Diffstat (limited to 'src/lib/pubkey/ecc_key/ecc_key.h')
-rw-r--r-- | src/lib/pubkey/ecc_key/ecc_key.h | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/src/lib/pubkey/ecc_key/ecc_key.h b/src/lib/pubkey/ecc_key/ecc_key.h new file mode 100644 index 000000000..de980608a --- /dev/null +++ b/src/lib/pubkey/ecc_key/ecc_key.h @@ -0,0 +1,121 @@ +/* +* ECDSA +* (C) 2007 Falko Strenzke, FlexSecure GmbH +* Manuel Hartl, FlexSecure GmbH +* (C) 2008-2010 Jack Lloyd +* +* Distributed under the terms of the Botan license +*/ + +#ifndef BOTAN_ECC_PUBLIC_KEY_BASE_H__ +#define BOTAN_ECC_PUBLIC_KEY_BASE_H__ + +#include <botan/ec_group.h> +#include <botan/pk_keys.h> +#include <botan/x509_key.h> +#include <botan/pkcs8.h> + +namespace Botan { + +/** +* This class represents abstract ECC public keys. When encoding a key +* via an encoder that can be accessed via the corresponding member +* functions, the key will decide upon its internally stored encoding +* information whether to encode itself with or without domain +* parameters, or using the domain parameter oid. Furthermore, a public +* key without domain parameters can be decoded. In that case, it +* cannot be used for verification until its domain parameters are set +* by calling the corresponding member function. +*/ +class BOTAN_DLL EC_PublicKey : public virtual Public_Key + { + public: + EC_PublicKey(const EC_Group& dom_par, + const PointGFp& pub_point); + + EC_PublicKey(const AlgorithmIdentifier& alg_id, + const secure_vector<byte>& key_bits); + + /** + * Get the public point of this key. + * @throw Invalid_State is thrown if the + * domain parameters of this point are not set + * @result the public point of this key + */ + const PointGFp& public_point() const { return public_key; } + + AlgorithmIdentifier algorithm_identifier() const; + + std::vector<byte> x509_subject_public_key() const; + + bool check_key(RandomNumberGenerator& rng, + bool strong) const; + + /** + * Get the domain parameters of this key. + * @throw Invalid_State is thrown if the + * domain parameters of this point are not set + * @result the domain parameters of this key + */ + const EC_Group& domain() const { return domain_params; } + + /** + * Set the domain parameter encoding to be used when encoding this key. + * @param enc the encoding to use + */ + void set_parameter_encoding(EC_Group_Encoding enc); + + /** + * Return the DER encoding of this keys domain in whatever format + * is preset for this particular key + */ + std::vector<byte> DER_domain() const + { return domain().DER_encode(domain_format()); } + + /** + * Get the domain parameter encoding to be used when encoding this key. + * @result the encoding to use + */ + EC_Group_Encoding domain_format() const + { return domain_encoding; } + + size_t estimated_strength() const override; + + protected: + EC_PublicKey() : domain_encoding(EC_DOMPAR_ENC_EXPLICIT) {} + + EC_Group domain_params; + PointGFp public_key; + EC_Group_Encoding domain_encoding; + }; + +/** +* This abstract class represents ECC private keys +*/ +class BOTAN_DLL EC_PrivateKey : public virtual EC_PublicKey, + public virtual Private_Key + { + public: + EC_PrivateKey(RandomNumberGenerator& rng, + const EC_Group& domain, + const BigInt& private_key); + + EC_PrivateKey(const AlgorithmIdentifier& alg_id, + const secure_vector<byte>& key_bits); + + secure_vector<byte> pkcs8_private_key() const; + + /** + * Get the private key value of this key object. + * @result the private key value of this key object + */ + const BigInt& private_value() const; + protected: + EC_PrivateKey() {} + + BigInt private_key; + }; + +} + +#endif |