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74 lines
2.2 KiB
C++
74 lines
2.2 KiB
C++
// Roblox: Moved here from RakNet 3.x
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/// \file DataBlockEncryptor.h
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/// \internal
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/// \brief Encrypts and decrypts data blocks. Used as part of secure connections.
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///
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/// This file is part of RakNet Copyright 2003 Jenkins Software LLC
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///
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/// Usage of RakNet is subject to the appropriate license agreement.
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#ifndef __DATA_BLOCK_ENCRYPTOR_H
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#define __DATA_BLOCK_ENCRYPTOR_H
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#include "Rijndael.h"
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#include "RakMemoryOverride.h"
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namespace RakNet
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{
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class RakNetRandom;
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}
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/// Encrypts and decrypts data blocks.
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class DataBlockEncryptor
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{
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public:
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// Constructor
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DataBlockEncryptor();
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// Destructor
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~DataBlockEncryptor();
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/// \return true if SetKey has been called previously
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bool IsKeySet( void ) const;
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/// \brief Set the encryption key
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/// \param[in] key The new encryption key
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void SetKey( const unsigned char key[ 16 ] );
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/// \brief Unset the encryption key
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void UnsetKey( void );
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/// \brief Encryption adds 6 data bytes and then pads the number of bytes to be a multiple of 16.
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/// \details Output should be large enough to hold this.
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/// Output can be the same memory block as input
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/// \param[in] input the input buffer to encrypt
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/// \param[in] inputLength the size of the @em input buffer
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/// \param[in] output the output buffer to store encrypted data
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/// \param[in] outputLength the size of the output buffer
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void Encrypt( unsigned char *input, unsigned int inputLength, unsigned char *output, unsigned int *outputLength, RakNet::RakNetRandom *rnr );
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/// \brief Decryption removes bytes, as few as 6.
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/// \details Output should be large enough to hold this.
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/// Output can be the same memory block as input
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/// \param[in] input the input buffer to decrypt
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/// \param[in] inputLength the size of the @em input buffer
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/// \param[in] output the output buffer to store decrypted data
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/// \param[in] outputLength the size of the @em output buffer
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/// \return False on bad checksum or input, true on success
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bool Decrypt( unsigned char *input, unsigned int inputLength, unsigned char *output, unsigned int *outputLength );
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protected:
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keyInstance keyEncrypt;
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keyInstance keyDecrypt;
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cipherInstance cipherInst;
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bool keySet;
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};
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#endif
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