/usr/include/wvstreams/wvblowfish.h is in libwvstreams-dev 4.6.1-5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 | /* -*- Mode: C++ -*-
* Worldvisions Tunnel Vision Software:
* Copyright (C) 1997-2002 Net Integration Technologies, Inc.
*
* Blowfish cryptography abstractions.
*/
#ifndef __WVBLOWFISH_H
#define __WVBLOWFISH_H
#include "wvencoder.h"
#include "wvencoderstream.h"
struct bf_key_st;
/**
* An encoder implementing the Blowfish encryption method.
*
* Supports reset().
*
*/
class WvBlowfishEncoder : public WvEncoder
{
public:
enum Mode {
ECBEncrypt, /*!< Encrypt using ECB mode (avoid) */
ECBDecrypt, /*!< Decrypt using ECB mode (avoid) */
CFBEncrypt, /*!< Encrypt using CFB mode (simulates a stream) */
CFBDecrypt /*!< Decrypt using CFB mode (simulates a stream) */
};
/**
* Creates a new Blowfish cipher encoder.
*
* "mode" is the encryption mode
* "key" is the initial key
* "keysize" is the initial key size in bytes
*/
WvBlowfishEncoder(Mode mode, const void *key, size_t keysize);
virtual ~WvBlowfishEncoder();
/**
* Sets the current Blowfish key and resets the initialization
* vector to all nulls.
*
* "key" is the new key
* "keysize" is the key size in bytes
*/
void setkey(const void *key, size_t keysize);
/**
* Sets the current Blowfish initialization vector.
*
* "iv" is the new IV must be 8 bytes
*/
void setiv(const void *iv);
/** Return true if mode is encrypting or false if decrypting. */
bool is_encrypting() const {
return (mode == ECBEncrypt || mode == CFBEncrypt);
}
protected:
virtual bool _encode(WvBuf &in, WvBuf &out, bool flush);
virtual bool _reset(); // supported: restores most recently set
// key and initialization vector
Mode mode;
size_t keysize;
unsigned char *key;
struct bf_key_st *bfkey;
unsigned char ivec[8]; // initialization vector
int ivecoff; // current offset into initvec
void preparekey();
};
/**
* A crypto stream implementing Blowfish encryption.
*
* By default, written data is encrypted using
* WvBlowfishEncoder::CFBEncrypt, read data is decrypted using
* WvBlowfishEncoder::CFBDecrypt.
*
* @see WvBlowfishEncoder
*/
class WvBlowfishStream : public WvEncoderStream
{
public:
WvBlowfishStream(WvStream *_cloned,
const void *key, size_t _keysize,
WvBlowfishEncoder::Mode readmode = WvBlowfishEncoder::CFBDecrypt,
WvBlowfishEncoder::Mode writemode = WvBlowfishEncoder::CFBEncrypt);
virtual ~WvBlowfishStream() { }
};
#endif // __WVBLOWFISH_H
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