93 lines
2.5 KiB
C
93 lines
2.5 KiB
C
/*
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* This file Copyright (C) 2007-2008 Charles Kerr <charles@rebelbase.com>
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*
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* This file is licensed by the GPL version 2. Works owned by the
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* Transmission project are granted a special exemption to clause 2(b)
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* so that the bulk of its code can remain under the MIT license.
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* This exemption does not extend to derived works not owned by
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* the Transmission project.
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*
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* $Id$
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*/
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#ifndef TR_ENCRYPTION_H
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#define TR_ENCRYPTION_H
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#include <inttypes.h>
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/**
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***
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**/
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struct evbuffer;
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typedef struct tr_crypto tr_crypto;
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/**
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***
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**/
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tr_crypto* tr_cryptoNew( const uint8_t * torrentHash,
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int isIncoming );
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void tr_cryptoFree( tr_crypto * crypto );
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/**
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***
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**/
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void tr_cryptoSetTorrentHash( tr_crypto * crypto,
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const uint8_t * torrentHash );
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const uint8_t* tr_cryptoGetTorrentHash( const tr_crypto * crypto );
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int tr_cryptoHasTorrentHash( const tr_crypto * crypto );
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/**
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***
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**/
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const uint8_t* 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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/**
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***
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**/
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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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void tr_sha1( uint8_t * setme,
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const void * content1,
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int content1_len,
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... );
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/** Returns a random number in the range of [0...n) */
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int tr_cryptoRandInt( int n );
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/** Returns a vaguely random number in the range of [0...n).
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This is faster -- BUT WEAKER -- than tr_cryptoRandInt()
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and should only be used when tr_cryptoRandInt() is too
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slow, and NEVER in sensitive cases */
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int tr_cryptoWeakRandInt( int n );
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/** Fills a buffer with random bytes */
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void tr_cryptoRandBuf( unsigned char *buf,
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size_t len );
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#endif
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