libcryfs/utils/Key.h
2015-02-17 00:23:33 +01:00

40 lines
887 B
C++

#pragma once
#ifndef BLOCKSTORE_UTILS_KEY_H_
#define BLOCKSTORE_UTILS_KEY_H_
#include <string>
namespace blockstore {
// A key here is NOT a key for encryption, but a key as used in key->value mappings ("access handle for a block").
class Key {
public:
//Non-virtual destructor because we want Key objects to be small
~Key();
static constexpr unsigned int KEYLENGTH_BINARY = 16;
static constexpr unsigned int KEYLENGTH_STRING = 2 * KEYLENGTH_BINARY; // Hex encoding
static Key CreateRandomKey();
static Key FromString(const std::string &key);
std::string ToString() const;
static Key FromBinary(const void *source);
void ToBinary(void *target) const;
const unsigned char *data() const;
private:
Key();
unsigned char _key[KEYLENGTH_BINARY];
};
bool operator==(const Key &lhs, const Key &rhs);
bool operator!=(const Key &lhs, const Key &rhs);
}
#endif