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i bet a lot of people didn't know what ssh 1.2.16 had a nice license.
well, except for the patent issues.  someone in sweden (forget their
name at the moment) cleaned out most of the patented code, and now
this code removes rsa code.  when this is done, it will link against
libssl, but the work isn't completely done yet.  then we need to bring
this up to modern days, featurewise.

/*

bufaux.h

Author: Tatu Ylonen <ylo@cs.hut.fi>

Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
                   All rights reserved

Created: Wed Mar 29 02:18:23 1995 ylo

*/

/* RCSID("$Id: bufaux.h,v 1.1 1999/09/26 20:53:34 deraadt Exp $"); */

#ifndef BUFAUX_H
#define BUFAUX_H

#include "buffer.h"

/* Stores an MP_INT in the buffer with a 2-byte msb first bit count, followed
   by (bits+7)/8 bytes of binary data, msb first. */
void buffer_put_mp_int(Buffer *buffer, MP_INT *value);

/* Retrieves an MP_INT from the buffer. */
int buffer_get_mp_int(Buffer *buffer, MP_INT *value);

/* Returns an integer from the buffer (4 bytes, msb first). */
unsigned int buffer_get_int(Buffer *buffer);

/* Stores an integer in the buffer in 4 bytes, msb first. */
void buffer_put_int(Buffer *buffer, unsigned int value);

/* Returns a character from the buffer (0 - 255). */
int buffer_get_char(Buffer *buffer);

/* Stores a character in the buffer. */
void buffer_put_char(Buffer *buffer, int value);

/* Returns an arbitrary binary string from the buffer.  The string cannot
   be longer than 256k.  The returned value points to memory allocated
   with xmalloc; it is the responsibility of the calling function to free
   the data.  If length_ptr is non-NULL, the length of the returned data
   will be stored there.  A null character will be automatically appended
   to the returned string, and is not counted in length. */
char *buffer_get_string(Buffer *buffer, unsigned int *length_ptr);

/* Stores and arbitrary binary string in the buffer. */
void buffer_put_string(Buffer *buffer, const void *buf, unsigned int len);

#endif /* BUFAUX_H */