MoneroOcean
94 lines
2.0 KiB
C++
94 lines
2.0 KiB
C++
// Copyright (c) 2012-2013 The Cryptonote developers
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// Distributed under the MIT/X11 software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#pragma once
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#include <cstddef>
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#include <mutex>
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#include <vector>
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#include "common/pod-class.h"
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#include "generic-ops.h"
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#include "hash.h"
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namespace crypto {
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extern "C" {
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#include "random.h"
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}
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extern std::mutex random_lock;
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#pragma pack(push, 1)
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POD_CLASS ec_point {
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char data[32];
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};
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POD_CLASS ec_scalar {
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char data[32];
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};
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POD_CLASS public_key: ec_point {
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friend class crypto_ops;
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};
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POD_CLASS secret_key: ec_scalar {
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friend class crypto_ops;
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};
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POD_CLASS key_derivation: ec_point {
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friend class crypto_ops;
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};
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POD_CLASS key_image: ec_point {
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friend class crypto_ops;
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};
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POD_CLASS signature {
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ec_scalar c, r;
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friend class crypto_ops;
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};
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POD_CLASS view_tag {
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char data;
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};
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#pragma pack(pop)
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static_assert(sizeof(ec_point) == 32 && sizeof(ec_scalar) == 32 &&
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sizeof(public_key) == 32 && sizeof(secret_key) == 32 &&
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sizeof(key_derivation) == 32 && sizeof(key_image) == 32 &&
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sizeof(signature) == 64 && sizeof(view_tag) == 1, "Invalid structure size");
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class crypto_ops {
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crypto_ops();
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crypto_ops(const crypto_ops &);
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void operator=(const crypto_ops &);
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~crypto_ops();
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static bool check_key(const public_key &);
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friend bool check_key(const public_key &);
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};
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/* Generate a value filled with random bytes.
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*/
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template<typename T>
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typename std::enable_if<std::is_pod<T>::value, T>::type rand() {
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typename std::remove_cv<T>::type res;
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std::lock_guard<std::mutex> lock(random_lock);
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generate_random_bytes(sizeof(T), &res);
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return res;
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}
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/* Check a public key. Returns true if it is valid, false otherwise.
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*/
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inline bool check_key(const public_key &key) {
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return crypto_ops::check_key(key);
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}
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}
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CRYPTO_MAKE_COMPARABLE(public_key)
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CRYPTO_MAKE_HASHABLE(key_image)
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CRYPTO_MAKE_COMPARABLE(signature)
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CRYPTO_MAKE_COMPARABLE(view_tag)
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