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/*
* (C) 2023 Jack Lloyd
*
* Botan is released under the Simplified BSD License (see license.txt)
*/
#ifndef BOTAN_DL_SCHEME_H_
#define BOTAN_DL_SCHEME_H_
#include <botan/bigint.h>
#include <botan/dl_group.h>
#include <memory>
#include <span>
#include <string_view>
namespace Botan {
class AlgorithmIdentifier;
class RandomNumberGenerator;
class DL_PublicKey final {
public:
DL_PublicKey(const DL_Group& group, const BigInt& public_key);
DL_PublicKey(const AlgorithmIdentifier& alg_id, std::span<const uint8_t> key_bits, DL_Group_Format format);
bool check_key(RandomNumberGenerator& rng, bool strong) const;
const DL_Group& group() const { return m_group; }
const BigInt& public_key() const { return m_public_key; }
// Return the binary representation of the integer public key
std::vector<uint8_t> public_key_as_bytes() const;
const BigInt& get_int_field(std::string_view algo_name, std::string_view field) const;
std::vector<uint8_t> DER_encode() const;
size_t estimated_strength() const;
size_t p_bits() const;
private:
const DL_Group m_group;
const BigInt m_public_key;
};
class DL_PrivateKey final {
public:
DL_PrivateKey(const DL_Group& group, const BigInt& private_key);
DL_PrivateKey(const DL_Group& group, RandomNumberGenerator& rng);
DL_PrivateKey(const AlgorithmIdentifier& alg_id, std::span<const uint8_t> key_bits, DL_Group_Format format);
bool check_key(RandomNumberGenerator& rng, bool strong) const;
/**
* Return a new shared_ptr of the associated public key
*/
std::shared_ptr<DL_PublicKey> public_key() const;
/**
* Return the group this key operates in
*/
const DL_Group& group() const { return m_group; }
/**
* Return the integer value of the private key
*/
const BigInt& private_key() const { return m_private_key; }
/**
* DER encode the private key
*/
secure_vector<uint8_t> DER_encode() const;
/**
* Return the raw serialization of the private key
*/
secure_vector<uint8_t> raw_private_key_bits() const;
const BigInt& get_int_field(std::string_view algo_name, std::string_view field) const;
private:
const DL_Group m_group;
const BigInt m_private_key;
const BigInt m_public_key;
};
} // namespace Botan
#endif