debian/libwvstreams-dev/usr/include/wvstreams/wvrsa.h

/* -*- Mode: C++ -*-
 * Worldvisions Tunnel Vision Software:
 *   Copyright (C) 1997-2002 Net Integration Technologies, Inc.
 *
 * RSA cryptography abstractions.
 */
#ifndef __WVRSA_H
#define __WVRSA_H
 
#include "wverror.h"
#include "wvencoder.h"
#include "wvencoderstream.h"
#include "wvlog.h"
 
struct rsa_st;

class WvRSAKey
{
public:
    enum DumpMode { RsaPEM, RsaPubPEM, RsaHex, RsaPubHex };
 
    struct rsa_st *rsa;
    
    WvRSAKey();
    WvRSAKey(const WvRSAKey &k);
    WvRSAKey(WvStringParm keystr, bool priv);
    WvRSAKey(struct rsa_st *_rsa, bool priv); // note: takes ownership

    WvRSAKey(int bits);
    
    virtual ~WvRSAKey();
    
    virtual bool isok() const;
    
    virtual WvString encode(const DumpMode mode) const;
    virtual void encode(const DumpMode mode, WvBuf &buf) const;

    virtual void decode(const DumpMode mode, WvStringParm encoded);
    virtual void decode(const DumpMode mode, WvBuf &encoded);
 
private:
    bool priv;
    mutable WvLog debug;
};
 

class WvRSAEncoder : public WvEncoder
{
public:
    enum Mode {
        Encrypt,     
        Decrypt,     
        SignEncrypt, 
        SignDecrypt  
    };

    WvRSAEncoder(Mode mode, const WvRSAKey &key);
    virtual ~WvRSAEncoder();
 
protected:
    virtual bool _encode(WvBuf &in, WvBuf &out, bool flush);
    virtual bool _reset(); // supported
 
private:
    Mode mode;
    WvRSAKey key;
    size_t rsasize;
};
 

class WvRSAStream : public WvEncoderStream
{
public:
    WvRSAStream(WvStream *_cloned,
        const WvRSAKey &_my_key, const WvRSAKey &_their_key, 
        WvRSAEncoder::Mode readmode = WvRSAEncoder::Decrypt,
        WvRSAEncoder::Mode writemode = WvRSAEncoder::Encrypt);
    virtual ~WvRSAStream() { }
};
 
 
#endif // __WVRSA_H