39 lines
1.1 KiB
C++
39 lines
1.1 KiB
C++
/**
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* @file llcipher.h
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* @brief Abstract base class for encryption ciphers.
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*
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* Copyright (c) 2003-$CurrentYear$, Linden Research, Inc.
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* $License$
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*/
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#ifndef LLCIPHER_H
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#define LLCIPHER_H
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// Class LLCipher
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//
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// Abstract base class for a cipher object.
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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class LLCipher
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{
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public:
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virtual ~LLCipher() {}
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// encrypt src and place result into dst. returns TRUE if
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// Returns number of bytes written into dst, or 0 on error.
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virtual U32 encrypt(const U8* src, U32 src_len, U8* dst, U32 dst_len) = 0;
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// decrypt src and place result into dst.
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// Returns number of bytes written into dst, or 0 on error.
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virtual U32 decrypt(const U8* src, U32 src_len, U8* dst, U32 dst_len) = 0;
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// returns the minimum amount of space required to encrypt for a
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// unencrypted source buffer of length len.
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// *NOTE: This is estimated space and you should check the return value
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// of the encrypt function.
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virtual U32 requiredEncryptionSpace(U32 src_len) const = 0 ;
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};
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#endif
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