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CreateCell.cpp
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CreateCell.cpp
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/*-
* Copyright (c) 2009, Moxie Marlinspike
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 4. Neither the name of this program nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include "CreateCell.h"
#include "HybridEncryption.h"
#include <iostream>
#include "../util/Util.h"
CreateCell::CreateCell(uint16_t circuitId, DH *dh, RSA *onionKey) :
Cell(circuitId, (unsigned char)0x01)
{
int plaintextPayloadLength = BN_num_bytes(dh->pub_key);
unsigned char* plaintextPayload = (unsigned char*)malloc(plaintextPayloadLength);
int encryptedPayloadLength;
unsigned char* encryptedPayload;
BN_bn2bin(dh->pub_key, plaintextPayload);
HybridEncryption::encrypt(plaintextPayload, plaintextPayloadLength,
&encryptedPayload, &encryptedPayloadLength,
onionKey);
// std::cerr << "Create Cell Encrypted Payload Length: " << encryptedPayloadLength << std::endl;
append(encryptedPayload, encryptedPayloadLength);
// std::cerr << "Sending Create Cell: " << std::endl;
// Util::hexDump(getPayload(), getPayloadSize());
free(plaintextPayload);
free(encryptedPayload);
}