87 lines
2.5 KiB
C
87 lines
2.5 KiB
C
/*
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* This file Copyright (C) 2007-2014 Mnemosyne LLC
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*
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* It may be used under the GNU GPL versions 2 or 3
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* or any future license endorsed by Mnemosyne LLC.
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*
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* $Id$
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*/
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#ifndef __TRANSMISSION__
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#error only libtransmission should #include this header.
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#endif
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#pragma once
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#include <inttypes.h>
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#include "crypto-utils.h"
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#include "utils.h" /* TR_GNUC_NULL_TERMINATED */
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/**
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*** @addtogroup peers
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*** @{
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**/
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enum
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{
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KEY_LEN = 96
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};
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/** @brief Holds state information for encrypted peer communications */
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typedef struct
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{
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tr_rc4_ctx_t dec_key;
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tr_rc4_ctx_t enc_key;
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tr_dh_ctx_t dh;
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uint8_t myPublicKey[KEY_LEN];
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tr_dh_secret_t mySecret;
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uint8_t torrentHash[SHA_DIGEST_LENGTH];
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bool isIncoming;
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bool torrentHashIsSet;
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}
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tr_crypto;
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/** @brief construct a new tr_crypto object */
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void tr_cryptoConstruct (tr_crypto * crypto, const uint8_t * torrentHash, bool isIncoming);
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/** @brief destruct an existing tr_crypto object */
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void tr_cryptoDestruct (tr_crypto * crypto);
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void tr_cryptoSetTorrentHash (tr_crypto * crypto, const uint8_t * torrentHash);
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const uint8_t* tr_cryptoGetTorrentHash (const tr_crypto * crypto);
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bool tr_cryptoHasTorrentHash (const tr_crypto * crypto);
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bool tr_cryptoComputeSecret (tr_crypto * crypto,
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const uint8_t * peerPublicKey);
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const uint8_t* tr_cryptoGetMyPublicKey (const tr_crypto * crypto,
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int * setme_len);
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void tr_cryptoDecryptInit (tr_crypto * crypto);
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void tr_cryptoDecrypt (tr_crypto * crypto,
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size_t buflen,
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const void * buf_in,
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void * buf_out);
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void tr_cryptoEncryptInit (tr_crypto * crypto);
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void tr_cryptoEncrypt (tr_crypto * crypto,
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size_t buflen,
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const void * buf_in,
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void * buf_out);
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bool tr_cryptoSecretKeySha1 (const tr_crypto * crypto,
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const void * prepend_data,
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size_t prepend_data_size,
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const void * append_data,
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size_t append_data_size,
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uint8_t * hash);
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/* @} */
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