mirror of
https://github.com/XRPLF/rippled.git
synced 2025-11-19 18:45:52 +00:00
first
This commit is contained in:
jed
241
key.h
Normal file
241
key.h
Normal file
@@ -0,0 +1,241 @@
|
||||
// Copyright (c) 2009-2010 Satoshi Nakamoto
|
||||
// Copyright (c) 2011 The Bitcoin developers
|
||||
// Distributed under the MIT/X11 software license, see the accompanying
|
||||
// file license.txt or http://www.opensource.org/licenses/mit-license.php.
|
||||
#ifndef BITCOIN_KEY_H
|
||||
#define BITCOIN_KEY_H
|
||||
|
||||
#include <stdexcept>
|
||||
#include <vector>
|
||||
|
||||
#include <openssl/ec.h>
|
||||
#include <openssl/ecdsa.h>
|
||||
#include <openssl/obj_mac.h>
|
||||
|
||||
#include "SecureAllocator.h"
|
||||
#include "NewcoinAddress.h"
|
||||
#include "uint256.h"
|
||||
#include "base58.h"
|
||||
|
||||
// secp160k1
|
||||
// const unsigned int PRIVATE_KEY_SIZE = 192;
|
||||
// const unsigned int PUBLIC_KEY_SIZE = 41;
|
||||
// const unsigned int SIGNATURE_SIZE = 48;
|
||||
//
|
||||
// secp192k1
|
||||
// const unsigned int PRIVATE_KEY_SIZE = 222;
|
||||
// const unsigned int PUBLIC_KEY_SIZE = 49;
|
||||
// const unsigned int SIGNATURE_SIZE = 57;
|
||||
//
|
||||
// secp224k1
|
||||
// const unsigned int PRIVATE_KEY_SIZE = 250;
|
||||
// const unsigned int PUBLIC_KEY_SIZE = 57;
|
||||
// const unsigned int SIGNATURE_SIZE = 66;
|
||||
//
|
||||
// secp256k1:
|
||||
// const unsigned int PRIVATE_KEY_SIZE = 279;
|
||||
// const unsigned int PUBLIC_KEY_SIZE = 65;
|
||||
// const unsigned int SIGNATURE_SIZE = 72;
|
||||
//
|
||||
// see www.keylength.com
|
||||
// script supports up to 75 for single byte push
|
||||
|
||||
int static inline EC_KEY_regenerate_key(EC_KEY *eckey, BIGNUM *priv_key)
|
||||
{
|
||||
int ok = 0;
|
||||
BN_CTX *ctx = NULL;
|
||||
EC_POINT *pub_key = NULL;
|
||||
|
||||
if (!eckey) return 0;
|
||||
|
||||
const EC_GROUP *group = EC_KEY_get0_group(eckey);
|
||||
|
||||
if ((ctx = BN_CTX_new()) == NULL)
|
||||
goto err;
|
||||
|
||||
pub_key = EC_POINT_new(group);
|
||||
|
||||
if (pub_key == NULL)
|
||||
goto err;
|
||||
|
||||
if (!EC_POINT_mul(group, pub_key, priv_key, NULL, NULL, ctx))
|
||||
goto err;
|
||||
|
||||
EC_KEY_set_private_key(eckey,priv_key);
|
||||
EC_KEY_set_public_key(eckey,pub_key);
|
||||
|
||||
ok = 1;
|
||||
|
||||
err:
|
||||
|
||||
if (pub_key)
|
||||
EC_POINT_free(pub_key);
|
||||
if (ctx != NULL)
|
||||
BN_CTX_free(ctx);
|
||||
|
||||
return(ok);
|
||||
}
|
||||
|
||||
|
||||
class key_error : public std::runtime_error
|
||||
{
|
||||
public:
|
||||
explicit key_error(const std::string& str) : std::runtime_error(str) {}
|
||||
};
|
||||
|
||||
|
||||
|
||||
//JED: typedef std::vector<unsigned char, secure_allocator<unsigned char> > CPrivKey;
|
||||
//typedef std::vector<unsigned char, secure_allocator<unsigned char> > CSecret;
|
||||
|
||||
typedef std::vector<unsigned char > CPrivKey;
|
||||
typedef std::vector<unsigned char > CSecret;
|
||||
class CKey
|
||||
{
|
||||
protected:
|
||||
EC_KEY* pkey;
|
||||
bool fSet;
|
||||
|
||||
public:
|
||||
CKey()
|
||||
{
|
||||
pkey = EC_KEY_new_by_curve_name(NID_secp256k1);
|
||||
if (pkey == NULL)
|
||||
throw key_error("CKey::CKey() : EC_KEY_new_by_curve_name failed");
|
||||
fSet = false;
|
||||
}
|
||||
|
||||
CKey(const CKey& b)
|
||||
{
|
||||
pkey = EC_KEY_dup(b.pkey);
|
||||
if (pkey == NULL)
|
||||
throw key_error("CKey::CKey(const CKey&) : EC_KEY_dup failed");
|
||||
fSet = b.fSet;
|
||||
}
|
||||
|
||||
CKey& operator=(const CKey& b)
|
||||
{
|
||||
if (!EC_KEY_copy(pkey, b.pkey))
|
||||
throw key_error("CKey::operator=(const CKey&) : EC_KEY_copy failed");
|
||||
fSet = b.fSet;
|
||||
return (*this);
|
||||
}
|
||||
|
||||
~CKey()
|
||||
{
|
||||
EC_KEY_free(pkey);
|
||||
}
|
||||
|
||||
bool IsNull() const
|
||||
{
|
||||
return !fSet;
|
||||
}
|
||||
|
||||
void MakeNewKey()
|
||||
{
|
||||
if (!EC_KEY_generate_key(pkey))
|
||||
throw key_error("CKey::MakeNewKey() : EC_KEY_generate_key failed");
|
||||
fSet = true;
|
||||
}
|
||||
|
||||
bool SetPrivKey(const CPrivKey& vchPrivKey)
|
||||
{
|
||||
const unsigned char* pbegin = &vchPrivKey[0];
|
||||
if (!d2i_ECPrivateKey(&pkey, &pbegin, vchPrivKey.size()))
|
||||
return false;
|
||||
fSet = true;
|
||||
return true;
|
||||
}
|
||||
|
||||
bool SetSecret(const CSecret& vchSecret)
|
||||
{
|
||||
EC_KEY_free(pkey);
|
||||
pkey = EC_KEY_new_by_curve_name(NID_secp256k1);
|
||||
if (pkey == NULL)
|
||||
throw key_error("CKey::SetSecret() : EC_KEY_new_by_curve_name failed");
|
||||
if (vchSecret.size() != 32)
|
||||
throw key_error("CKey::SetSecret() : secret must be 32 bytes");
|
||||
BIGNUM *bn = BN_bin2bn(&vchSecret[0],32,BN_new());
|
||||
if (bn == NULL)
|
||||
throw key_error("CKey::SetSecret() : BN_bin2bn failed");
|
||||
if (!EC_KEY_regenerate_key(pkey,bn))
|
||||
throw key_error("CKey::SetSecret() : EC_KEY_regenerate_key failed");
|
||||
BN_clear_free(bn);
|
||||
fSet = true;
|
||||
return true;
|
||||
}
|
||||
|
||||
CSecret GetSecret() const
|
||||
{
|
||||
CSecret vchRet;
|
||||
vchRet.resize(32);
|
||||
const BIGNUM *bn = EC_KEY_get0_private_key(pkey);
|
||||
int nBytes = BN_num_bytes(bn);
|
||||
if (bn == NULL)
|
||||
throw key_error("CKey::GetSecret() : EC_KEY_get0_private_key failed");
|
||||
int n=BN_bn2bin(bn,&vchRet[32 - nBytes]);
|
||||
if (n != nBytes)
|
||||
throw key_error("CKey::GetSecret(): BN_bn2bin failed");
|
||||
return vchRet;
|
||||
}
|
||||
|
||||
CPrivKey GetPrivKey() const
|
||||
{
|
||||
unsigned int nSize = i2d_ECPrivateKey(pkey, NULL);
|
||||
if (!nSize)
|
||||
throw key_error("CKey::GetPrivKey() : i2d_ECPrivateKey failed");
|
||||
CPrivKey vchPrivKey(nSize, 0);
|
||||
unsigned char* pbegin = &vchPrivKey[0];
|
||||
if (i2d_ECPrivateKey(pkey, &pbegin) != nSize)
|
||||
throw key_error("CKey::GetPrivKey() : i2d_ECPrivateKey returned unexpected size");
|
||||
return vchPrivKey;
|
||||
}
|
||||
|
||||
bool SetPubKey(const std::vector<unsigned char>& vchPubKey)
|
||||
{
|
||||
const unsigned char* pbegin = &vchPubKey[0];
|
||||
if (!o2i_ECPublicKey(&pkey, &pbegin, vchPubKey.size()))
|
||||
return false;
|
||||
fSet = true;
|
||||
return true;
|
||||
}
|
||||
|
||||
std::vector<unsigned char> GetPubKey() const
|
||||
{
|
||||
unsigned int nSize = i2o_ECPublicKey(pkey, NULL);
|
||||
if (!nSize)
|
||||
throw key_error("CKey::GetPubKey() : i2o_ECPublicKey failed");
|
||||
std::vector<unsigned char> vchPubKey(nSize, 0);
|
||||
unsigned char* pbegin = &vchPubKey[0];
|
||||
if (i2o_ECPublicKey(pkey, &pbegin) != nSize)
|
||||
throw key_error("CKey::GetPubKey() : i2o_ECPublicKey returned unexpected size");
|
||||
return vchPubKey;
|
||||
}
|
||||
|
||||
bool Sign(uint256 hash, std::vector<unsigned char>& vchSig)
|
||||
{
|
||||
vchSig.clear();
|
||||
unsigned char pchSig[10000];
|
||||
unsigned int nSize = 0;
|
||||
if (!ECDSA_sign(0, (unsigned char*)&hash, sizeof(hash), pchSig, &nSize, pkey))
|
||||
return false;
|
||||
vchSig.resize(nSize);
|
||||
memcpy(&vchSig[0], pchSig, nSize);
|
||||
return true;
|
||||
}
|
||||
|
||||
bool Verify(uint256 hash, const std::vector<unsigned char>& vchSig)
|
||||
{
|
||||
// -1 = error, 0 = bad sig, 1 = good
|
||||
if (ECDSA_verify(0, (unsigned char*)&hash, sizeof(hash), &vchSig[0], vchSig.size(), pkey) != 1)
|
||||
return false;
|
||||
return true;
|
||||
}
|
||||
|
||||
NewcoinAddress GetAddress() const
|
||||
{
|
||||
return NewcoinAddress(GetPubKey());
|
||||
}
|
||||
};
|
||||
|
||||
#endif
|
||||
Reference in New Issue
Block a user