mirror of
https://github.com/zerotier/ZeroTierOne.git
synced 2024-12-19 21:17:52 +00:00
131 lines
3.8 KiB
C++
131 lines
3.8 KiB
C++
/*
|
|
* ZeroTier One - Global Peer to Peer Ethernet
|
|
* Copyright (C) 2012-2013 ZeroTier Networks LLC
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
* --
|
|
*
|
|
* ZeroTier may be used and distributed under the terms of the GPLv3, which
|
|
* are available at: http://www.gnu.org/licenses/gpl-3.0.html
|
|
*
|
|
* If you would like to embed ZeroTier into a commercial application or
|
|
* redistribute it in a modified binary form, please contact ZeroTier Networks
|
|
* LLC. Start here: http://www.zerotier.com/
|
|
*/
|
|
|
|
#ifndef _ZT_ELLIPTICCURVEKEYPAIR_HPP
|
|
#define _ZT_ELLIPTICCURVEKEYPAIR_HPP
|
|
|
|
#include <string>
|
|
#include "EllipticCurveKey.hpp"
|
|
|
|
namespace ZeroTier {
|
|
|
|
/**
|
|
* An elliptic curve key pair supporting generation and key agreement
|
|
*
|
|
* This is basically OpenSSL libcrypto glue.
|
|
*/
|
|
class EllipticCurveKeyPair
|
|
{
|
|
public:
|
|
EllipticCurveKeyPair();
|
|
EllipticCurveKeyPair(const EllipticCurveKeyPair &pair);
|
|
EllipticCurveKeyPair(const EllipticCurveKey &pubk,const EllipticCurveKey &privk);
|
|
~EllipticCurveKeyPair();
|
|
|
|
const EllipticCurveKeyPair &operator=(const EllipticCurveKeyPair &pair);
|
|
|
|
/**
|
|
* Fill this structure with a newly generated public/private key pair
|
|
*
|
|
* @return True if key generation is successful
|
|
*/
|
|
bool generate();
|
|
|
|
/**
|
|
* Perform elliptic curve key agreement
|
|
*
|
|
* @param theirPublicKey Remote side's public key
|
|
* @param agreedUponKey Buffer to fill with agreed-upon symmetric key
|
|
* @param agreedUponKeyLength Number of bytes to generate
|
|
* @return True if key agreement is successful
|
|
*/
|
|
bool agree(const EllipticCurveKey &theirPublicKey,unsigned char *agreedUponKey,unsigned int agreedUponKeyLength) const;
|
|
|
|
/**
|
|
* Sign a SHA256 hash
|
|
*
|
|
* @param sha256 Pointer to 256-bit / 32-byte SHA hash to sign
|
|
* @return ECDSA signature (r and s in binary format, each prefixed by an 8-bit size)
|
|
*/
|
|
std::string sign(const void *sha256) const;
|
|
|
|
/**
|
|
* Sign something with this pair's private key, computing its hash first
|
|
*
|
|
* @param data Data to hash and sign
|
|
* @param len Length of data
|
|
* @return Signature bytes
|
|
*/
|
|
std::string sign(const void *data,unsigned int len) const;
|
|
|
|
/**
|
|
* Verify a signature
|
|
*
|
|
* @param sha256 Pointer to 256-bit / 32-byte SHA hash to verify
|
|
* @param pk Public key to verify against
|
|
* @param sigbytes Signature bytes
|
|
* @param siglen Length of signature
|
|
*/
|
|
static bool verify(const void *sha256,const EllipticCurveKey &pk,const void *sigbytes,unsigned int siglen);
|
|
|
|
/**
|
|
* Verify a signature
|
|
*
|
|
* @param data Data to verify
|
|
* @param len Length of data
|
|
* @param pk Public key to verify against
|
|
* @param sigbytes Signature bytes
|
|
* @param siglen Length of signature
|
|
*/
|
|
static bool verify(const void *data,unsigned int len,const EllipticCurveKey &pk,const void *sigbytes,unsigned int siglen);
|
|
|
|
inline bool operator==(const EllipticCurveKeyPair &kp) const
|
|
throw()
|
|
{
|
|
return ((_pub == kp._pub)&&(_priv == kp._priv));
|
|
}
|
|
inline bool operator!=(const EllipticCurveKeyPair &kp) const
|
|
throw()
|
|
{
|
|
return ((_pub != kp._pub)||(_priv != kp._priv));
|
|
}
|
|
|
|
inline const EllipticCurveKey &pub() const throw() { return _pub; }
|
|
inline const EllipticCurveKey &priv() const throw() { return _priv; }
|
|
|
|
private:
|
|
bool initInternalKey();
|
|
|
|
EllipticCurveKey _pub;
|
|
EllipticCurveKey _priv;
|
|
void *_internal_key;
|
|
};
|
|
|
|
} // namespace ZeroTier
|
|
|
|
#endif
|