/* * This file is part of Codecrypt. * * Codecrypt is free software: you can redistribute it and/or modify it * under the terms of the GNU Lesser General Public License as published by * the Free Software Foundation, either version 3 of the License, or (at * your option) any later version. * * Codecrypt is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public * License for more details. * * You should have received a copy of the GNU Lesser General Public License * along with Codecrypt. If not, see . */ #ifndef _ccr_algorithm_h_ #define _ccr_algorithm_h_ #include "algo_suite.h" #include "bvector.h" #include "prng.h" #include "sencode.h" /* * virtual interface definition for all cryptographic algorithm instances. * * Note that the whole class could be defined static, but we really enjoy * having the tiny virtual pointers stored in some cool structure along with * the handy algorithm name. */ class algorithm { public: virtual bool provides_signatures() = 0; virtual bool provides_encryption() = 0; virtual std::string get_alg_id() = 0; void register_into_suite (algorithm_suite&s) { s[this->get_alg_id()] = this; } /* * note that these functions should be ready for different * plaintext/ciphertext/message lengths, usually padding them somehow. */ virtual int encrypt (const bvector&plain, bvector&cipher, sencode* pubkey, prng&rng) { return -1; } virtual int decrypt (const bvector&cipher, bvector&plain, sencode* privkey) { return -1; } virtual int sign (const bvector&msg, bvector&sig, sencode** privkey, bool&dirty, prng&rng) { return -1; } virtual int verify (const bvector&sig, const bvector&msg, sencode* pubkey) { return -1; } virtual int create_keypair (sencode**pub, sencode**priv, prng&rng) { return -1; } }; #endif