keys.hpp

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// Copyright (c) 2021 MIT Digital Currency Initiative,
//                    Federal Reserve Bank of Boston
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
#ifndef OPENCBDC_TX_SRC_COMMON_KEYS_H_
#define OPENCBDC_TX_SRC_COMMON_KEYS_H_
 
#include <array>
#include <cstring>
#include <vector>
 
struct secp256k1_context_struct;
using secp256k1_context = struct secp256k1_context_struct;
 
namespace cbdc {
    static constexpr size_t pubkey_len = 32;
    static constexpr size_t sig_len = 64;
 
    using privkey_t = std::array<unsigned char, pubkey_len>;
    using pubkey_t = std::array<unsigned char, pubkey_len>;
    using witness_t = std::vector<std::byte>;
    using signature_t = std::array<unsigned char, sig_len>;
 
    auto pubkey_from_privkey(const privkey_t& privkey, secp256k1_context* ctx)
        -> pubkey_t;
 
    template<size_t S>
    auto to_vector(const std::array<unsigned char, S>& arr)
        -> std::vector<std::byte> {
        std::vector<std::byte> ret(S);
        memcpy(ret.data(), arr.data(), S);
        return ret;
    }
}
 
#endif // OPENCBDC_TX_SRC_COMMON_KEYS_H_