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/**
* @file llblowfishcipher.h
* @brief A symmetric block cipher, designed in 1993 by Bruce Schneier.
* We use it because it has an 8 byte block size, allowing encryption of
* two UUIDs and a timestamp (16x2 + 4 = 36 bytes) with only 40 bytes of
* output. AES has a block size of 32 bytes, so this would require 64 bytes.
*
* Copyright (c) 2007-$CurrentYear$, Linden Research, Inc.
* $License$
*/
#ifndef LLBLOWFISHCIPHER_H
#define LLBLOWFISHCIPHER_H
#include "llcipher.h"
class LLBlowfishCipher : public LLCipher
{
public:
// Secret may be up to 56 bytes in length per Blowfish spec.
LLBlowfishCipher(const U8* secret, size_t secret_size);
virtual ~LLBlowfishCipher();
// See llcipher.h for documentation.
/*virtual*/ U32 encrypt(const U8* src, U32 src_len, U8* dst, U32 dst_len);
/*virtual*/ U32 decrypt(const U8* src, U32 src_len, U8* dst, U32 dst_len);
/*virtual*/ U32 requiredEncryptionSpace(U32 src_len) const;
#ifdef _DEBUG
static BOOL testHarness();
#endif
private:
U8* mSecret;
size_t mSecretSize;
};
#endif // LL_LLCRYPTO_H
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