gradido/src/cpp/Crypto/KeyPairEd25519.h

51 lines
1.4 KiB
C++

#ifndef __GRADIDO_LOGIN_SERVER_CRYPTO_ED25519_H
#define __GRADIDO_LOGIN_SERVER_CRYPTO_ED25519_H
#include "IKeyPair.h"
/*!
* \author: Dario Rekowski
*
* \date: 2020-06-04
*
* \brief: Key Pairs class for ed25519 keys, used for default gradido transactions
*/
#include "../SingletonManager/MemoryManager.h"
#include "sodium.h"
#include "Passphrase.h"
class KeyPairEd25519 : public IKeyPair
{
public:
//! \param privateKey: take ownership, release after object destruction
//! \param publicKey: copy
KeyPairEd25519(MemoryBin* privateKey, const unsigned char* publicKey);
~KeyPairEd25519();
//! \param passphrase must contain word indices
//! \return create KeyPairEd25519, caller muss call delete at return after finish
static KeyPairEd25519* create(const Passphrase* passphrase);
//! \return caller take ownership of return value
MemoryBin* sign(const MemoryBin* message);
inline const unsigned char* getPublicKey() const { return mSodiumPublic; }
protected:
KeyPairEd25519();
private:
// 64 Byte
//! \brief ed25519 libsodium private key
//!
//! Why it is a pointer and the public is an array?
//! TODO: replace MemoryBin by a memory obfuscation class which make it hard to steal the private key from memory
MemoryBin* mSodiumSecret;
// 32 Byte
//! \brief ed25519 libsodium public key
unsigned char mSodiumPublic[crypto_sign_PUBLICKEYBYTES];
};
#endif //__GRADIDO_LOGIN_SERVER_CRYPTO_ED25519_H