forked from I2P_Developers/i2p.i2p
57 lines
2.2 KiB
C++
57 lines
2.2 KiB
C++
/*
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* Copyright (c) 2004, Matthew P. Cashdollar <mpc@innographx.com>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of the author nor the names of any contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
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* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
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* OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "platform.hpp"
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#include "chk.hpp"
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Chk::Chk(const uchar_t* plaintext, size_t size, const string& mime_type)
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: data_size(size), mime_type(mime_type)
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{
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encrypt(plaintext);
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}
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void Chk::encrypt(const uchar_t *pt)
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{
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int rc = register_cipher(&twofish_desc);
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assert(rc != -1);
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uchar_t key[CRYPT_KEY_SIZE], iv[CRYPT_BLOCK_SIZE];
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prng->get_bytes(key, CRYPT_KEY_SIZE);
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prng->get_bytes(iv, CRYPT_BLOCK_SIZE);
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symmetric_CTR ctr;
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rc = ctr_start(find_cipher("twofish"), iv, key, CRYPT_KEY_SIZE, 0, &ctr);
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assert(rc == CRYPT_OK);
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ct = new uchar_t[data_size];
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rc = ctr_encrypt(pt, ct, data_size, &ctr);
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assert(rc == CRYPT_OK);
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}
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