b3aaa0cc21
The function pow() in libmp(3) clashes with pow(3) in libm. We could rename this single function, but we can just take the same approach as the Solaris folks did, which is to prefix all function names with mp_. libmp(3) isn't really popular nowadays. I suspect not a single application in ports depends on it. There's still a chance, so I've increased the SHLIB_MAJOR and __FreeBSD_version. Reviewed by: deischen, rdivacky
133 lines
3.1 KiB
C
133 lines
3.1 KiB
C
/*
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* Sun RPC is a product of Sun Microsystems, Inc. and is provided for
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* unrestricted use provided that this legend is included on all tape
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* media and as a part of the software program in whole or part. Users
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* may copy or modify Sun RPC without charge, but are not authorized
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* to license or distribute it to anyone else except as part of a product or
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* program developed by the user or with the express written consent of
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* Sun Microsystems, Inc.
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*
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* SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
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* WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
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*
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* Sun RPC is provided with no support and without any obligation on the
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* part of Sun Microsystems, Inc. to assist in its use, correction,
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* modification or enhancement.
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*
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* SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
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* INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
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* OR ANY PART THEREOF.
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*
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* In no event will Sun Microsystems, Inc. be liable for any lost revenue
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* or profits or other special, indirect and consequential damages, even if
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* Sun has been advised of the possibility of such damages.
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*
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* Sun Microsystems, Inc.
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* 2550 Garcia Avenue
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* Mountain View, California 94043
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*/
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#if !defined(lint) && defined(SCCSIDS)
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#if 0
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static char sccsid[] = "@(#)generic.c 1.2 91/03/11 Copyr 1986 Sun Micro";
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#endif
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#endif
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/*
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* Copyright (C) 1986, Sun Microsystems, Inc.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/file.h>
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#include <rpc/rpc.h>
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#include <rpc/key_prot.h>
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#include <mp.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include "extern.h"
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static void adjust(char[], char *);
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static void getseed(char *, int, unsigned char *);
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/*
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* Generate a seed
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*/
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static void
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getseed(char *seed, int seedsize, unsigned char *pass)
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{
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int i;
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for (i = 0; i < seedsize; i++) {
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seed[i] = (arc4random() & 0xff) ^ pass[i % 8];
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}
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}
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/*
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* Generate a random public/secret key pair
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*/
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void
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genkeys(char *public, char *secret, char *pass)
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{
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unsigned int i;
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# define BASEBITS (8*sizeof (short) - 1)
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# define BASE (1 << BASEBITS)
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MINT *pk = mp_itom(0);
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MINT *sk = mp_itom(0);
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MINT *tmp;
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MINT *base = mp_itom(BASE);
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MINT *root = mp_itom(PROOT);
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MINT *modulus = mp_xtom(HEXMODULUS);
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short r;
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unsigned short seed[KEYSIZE/BASEBITS + 1];
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char *xkey;
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getseed((char *)seed, sizeof (seed), (u_char *)pass);
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for (i = 0; i < KEYSIZE/BASEBITS + 1; i++) {
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r = seed[i] % BASE;
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tmp = mp_itom(r);
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mp_mult(sk, base, sk);
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mp_madd(sk, tmp, sk);
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mp_mfree(tmp);
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}
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tmp = mp_itom(0);
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mp_mdiv(sk, modulus, tmp, sk);
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mp_mfree(tmp);
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mp_pow(root, sk, modulus, pk);
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xkey = mp_mtox(sk);
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adjust(secret, xkey);
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xkey = mp_mtox(pk);
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adjust(public, xkey);
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mp_mfree(sk);
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mp_mfree(base);
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mp_mfree(pk);
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mp_mfree(root);
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mp_mfree(modulus);
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}
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/*
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* Adjust the input key so that it is 0-filled on the left
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*/
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static void
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adjust(char keyout[HEXKEYBYTES+1], char *keyin)
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{
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char *p;
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char *s;
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for (p = keyin; *p; p++)
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;
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for (s = keyout + HEXKEYBYTES; p >= keyin; p--, s--) {
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*s = *p;
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}
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while (s >= keyout) {
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*s-- = '0';
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}
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}
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