91 lines
3.2 KiB
C
91 lines
3.2 KiB
C
/*
|
|
* random.h -- A strong random number generator
|
|
*
|
|
* $Id: random.h,v 1.8 1996/09/21 14:58:20 bde Exp $
|
|
*
|
|
* Version 0.95, last modified 18-Oct-95
|
|
*
|
|
* Copyright Theodore Ts'o, 1994, 1995. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, and the entire permission notice in its entirety,
|
|
* including the disclaimer of warranties.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. The name of the author may not be used to endorse or promote
|
|
* products derived from this software without specific prior
|
|
* written permission.
|
|
*
|
|
* ALTERNATIVELY, this product may be distributed under the terms of
|
|
* the GNU Public License, in which case the provisions of the GPL are
|
|
* required INSTEAD OF the above restrictions. (This clause is
|
|
* necessary due to a potential bad interaction between the GPL and
|
|
* the restrictions contained in a BSD-style copyright.)
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
|
|
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
|
|
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
|
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
|
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
|
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
|
|
* OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
*/
|
|
|
|
/*
|
|
* Many kernel routines will have a use for good random numbers,
|
|
* for example, for truely random TCP sequence numbers, which prevent
|
|
* certain forms of TCP spoofing attacks.
|
|
*
|
|
*/
|
|
|
|
#ifndef _MACHINE_RANDOM_H_
|
|
#define _MACHINE_RANDOM_H_
|
|
|
|
#include <sys/ioccom.h>
|
|
|
|
#define MEM_SETIRQ _IOW('r', 1, u_int16_t) /* set interrupt */
|
|
#define MEM_CLEARIRQ _IOW('r', 2, u_int16_t) /* clear interrupt */
|
|
#define MEM_RETURNIRQ _IOR('r', 3, u_int16_t) /* return interrupt */
|
|
|
|
#ifdef KERNEL
|
|
|
|
/* XXX include from the wrong place(s) for inthand2_t. */
|
|
#include <i386/isa/isa_device.h>
|
|
|
|
/* Interrupts to be used in the randomizing process */
|
|
|
|
extern inthand2_t *sec_intr_handler[];
|
|
extern int sec_intr_unit[];
|
|
|
|
/* Exported functions */
|
|
|
|
void rand_initialize(void);
|
|
void add_keyboard_randomness(u_char scancode);
|
|
void add_interrupt_randomness(int irq);
|
|
#ifdef notused
|
|
void add_blkdev_randomness(int major);
|
|
#endif
|
|
|
|
#ifdef notused
|
|
void get_random_bytes(void *buf, u_int nbytes);
|
|
#endif
|
|
u_int read_random(char *buf, u_int size);
|
|
u_int read_random_unlimited(char *buf, u_int size);
|
|
#ifdef notused
|
|
u_int write_random(const char *buf, u_int nbytes);
|
|
#endif
|
|
int random_select(dev_t dev, int rw, struct proc *p);
|
|
|
|
#endif /* KERNEL */
|
|
|
|
#endif /* !_MACHINE_RANDOM_H_ */
|