mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-12-03 22:13:09 +02:00
85f89d5d09
which can provide remote access to your device, even if the ip and firewall settings are broken git-svn-id: svn://svn.openwrt.org/openwrt/trunk@13738 3c298f89-4303-0410-b956-a3cf2f4a3e73
383 lines
8.5 KiB
C
383 lines
8.5 KiB
C
/* crypto/bn/bn_asm.c */
|
|
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
|
|
* All rights reserved.
|
|
*
|
|
* This package is an SSL implementation written
|
|
* by Eric Young (eay@cryptsoft.com).
|
|
* The implementation was written so as to conform with Netscapes SSL.
|
|
*
|
|
* This library is free for commercial and non-commercial use as long as
|
|
* the following conditions are aheared to. The following conditions
|
|
* apply to all code found in this distribution, be it the RC4, RSA,
|
|
* lhash, DES, etc., code; not just the SSL code. The SSL documentation
|
|
* included with this distribution is covered by the same copyright terms
|
|
* except that the holder is Tim Hudson (tjh@cryptsoft.com).
|
|
*
|
|
* Copyright remains Eric Young's, and as such any Copyright notices in
|
|
* the code are not to be removed.
|
|
* If this package is used in a product, Eric Young should be given attribution
|
|
* as the author of the parts of the library used.
|
|
* This can be in the form of a textual message at program startup or
|
|
* in documentation (online or textual) provided with the package.
|
|
*
|
|
* 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 copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 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. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* "This product includes cryptographic software written by
|
|
* Eric Young (eay@cryptsoft.com)"
|
|
* The word 'cryptographic' can be left out if the rouines from the library
|
|
* being used are not cryptographic related :-).
|
|
* 4. If you include any Windows specific code (or a derivative thereof) from
|
|
* the apps directory (application code) you must include an acknowledgement:
|
|
* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``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 OR CONTRIBUTORS 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.
|
|
*
|
|
* The licence and distribution terms for any publically available version or
|
|
* derivative of this code cannot be changed. i.e. this code cannot simply be
|
|
* copied and put under another distribution licence
|
|
* [including the GNU Public Licence.]
|
|
*/
|
|
|
|
#ifndef BN_DEBUG
|
|
# undef NDEBUG /* avoid conflicting definitions */
|
|
# define NDEBUG
|
|
#endif
|
|
|
|
#include <stdio.h>
|
|
#include <assert.h>
|
|
#include "bn_lcl.h"
|
|
|
|
#if defined(BN_LLONG) || defined(BN_UMULT_HIGH)
|
|
|
|
BN_ULONG bn_mul_add_words(BN_ULONG *rp, BN_ULONG *ap, int num, BN_ULONG w)
|
|
{
|
|
BN_ULONG c1=0;
|
|
|
|
assert(num >= 0);
|
|
if (num <= 0) return(c1);
|
|
|
|
while (num&~3)
|
|
{
|
|
mul_add(rp[0],ap[0],w,c1);
|
|
mul_add(rp[1],ap[1],w,c1);
|
|
mul_add(rp[2],ap[2],w,c1);
|
|
mul_add(rp[3],ap[3],w,c1);
|
|
ap+=4; rp+=4; num-=4;
|
|
}
|
|
if (num)
|
|
{
|
|
mul_add(rp[0],ap[0],w,c1); if (--num==0) return c1;
|
|
mul_add(rp[1],ap[1],w,c1); if (--num==0) return c1;
|
|
mul_add(rp[2],ap[2],w,c1); return c1;
|
|
}
|
|
|
|
return(c1);
|
|
}
|
|
|
|
BN_ULONG bn_mul_words(BN_ULONG *rp, BN_ULONG *ap, int num, BN_ULONG w)
|
|
{
|
|
BN_ULONG c1=0;
|
|
|
|
assert(num >= 0);
|
|
if (num <= 0) return(c1);
|
|
|
|
while (num&~3)
|
|
{
|
|
mul(rp[0],ap[0],w,c1);
|
|
mul(rp[1],ap[1],w,c1);
|
|
mul(rp[2],ap[2],w,c1);
|
|
mul(rp[3],ap[3],w,c1);
|
|
ap+=4; rp+=4; num-=4;
|
|
}
|
|
if (num)
|
|
{
|
|
mul(rp[0],ap[0],w,c1); if (--num == 0) return c1;
|
|
mul(rp[1],ap[1],w,c1); if (--num == 0) return c1;
|
|
mul(rp[2],ap[2],w,c1);
|
|
}
|
|
return(c1);
|
|
}
|
|
|
|
void bn_sqr_words(BN_ULONG *r, BN_ULONG *a, int n)
|
|
{
|
|
assert(n >= 0);
|
|
if (n <= 0) return;
|
|
while (n&~3)
|
|
{
|
|
sqr(r[0],r[1],a[0]);
|
|
sqr(r[2],r[3],a[1]);
|
|
sqr(r[4],r[5],a[2]);
|
|
sqr(r[6],r[7],a[3]);
|
|
a+=4; r+=8; n-=4;
|
|
}
|
|
if (n)
|
|
{
|
|
sqr(r[0],r[1],a[0]); if (--n == 0) return;
|
|
sqr(r[2],r[3],a[1]); if (--n == 0) return;
|
|
sqr(r[4],r[5],a[2]);
|
|
}
|
|
}
|
|
|
|
#else /* !(defined(BN_LLONG) || defined(BN_UMULT_HIGH)) */
|
|
|
|
BN_ULONG bn_mul_add_words(BN_ULONG *rp, BN_ULONG *ap, int num, BN_ULONG w)
|
|
{
|
|
BN_ULONG c=0;
|
|
BN_ULONG bl,bh;
|
|
|
|
assert(num >= 0);
|
|
if (num <= 0) return((BN_ULONG)0);
|
|
|
|
bl=LBITS(w);
|
|
bh=HBITS(w);
|
|
|
|
for (;;)
|
|
{
|
|
mul_add(rp[0],ap[0],bl,bh,c);
|
|
if (--num == 0) break;
|
|
mul_add(rp[1],ap[1],bl,bh,c);
|
|
if (--num == 0) break;
|
|
mul_add(rp[2],ap[2],bl,bh,c);
|
|
if (--num == 0) break;
|
|
mul_add(rp[3],ap[3],bl,bh,c);
|
|
if (--num == 0) break;
|
|
ap+=4;
|
|
rp+=4;
|
|
}
|
|
return(c);
|
|
}
|
|
|
|
BN_ULONG bn_mul_words(BN_ULONG *rp, BN_ULONG *ap, int num, BN_ULONG w)
|
|
{
|
|
BN_ULONG carry=0;
|
|
BN_ULONG bl,bh;
|
|
|
|
assert(num >= 0);
|
|
if (num <= 0) return((BN_ULONG)0);
|
|
|
|
bl=LBITS(w);
|
|
bh=HBITS(w);
|
|
|
|
for (;;)
|
|
{
|
|
mul(rp[0],ap[0],bl,bh,carry);
|
|
if (--num == 0) break;
|
|
mul(rp[1],ap[1],bl,bh,carry);
|
|
if (--num == 0) break;
|
|
mul(rp[2],ap[2],bl,bh,carry);
|
|
if (--num == 0) break;
|
|
mul(rp[3],ap[3],bl,bh,carry);
|
|
if (--num == 0) break;
|
|
ap+=4;
|
|
rp+=4;
|
|
}
|
|
return(carry);
|
|
}
|
|
|
|
void bn_sqr_words(BN_ULONG *r, BN_ULONG *a, int n)
|
|
{
|
|
assert(n >= 0);
|
|
if (n <= 0) return;
|
|
for (;;)
|
|
{
|
|
sqr64(r[0],r[1],a[0]);
|
|
if (--n == 0) break;
|
|
|
|
sqr64(r[2],r[3],a[1]);
|
|
if (--n == 0) break;
|
|
|
|
sqr64(r[4],r[5],a[2]);
|
|
if (--n == 0) break;
|
|
|
|
sqr64(r[6],r[7],a[3]);
|
|
if (--n == 0) break;
|
|
|
|
a+=4;
|
|
r+=8;
|
|
}
|
|
}
|
|
|
|
#endif /* !(defined(BN_LLONG) || defined(BN_UMULT_HIGH)) */
|
|
|
|
#if defined(BN_LLONG) && defined(BN_DIV2W)
|
|
|
|
BN_ULONG bn_div_words(BN_ULONG h, BN_ULONG l, BN_ULONG d)
|
|
{
|
|
return((BN_ULONG)(((((BN_ULLONG)h)<<BN_BITS2)|l)/(BN_ULLONG)d));
|
|
}
|
|
|
|
#else
|
|
|
|
/* Divide h,l by d and return the result. */
|
|
/* I need to test this some more :-( */
|
|
BN_ULONG bn_div_words(BN_ULONG h, BN_ULONG l, BN_ULONG d)
|
|
{
|
|
BN_ULONG dh,dl,q,ret=0,th,tl,t;
|
|
int i,count=2;
|
|
|
|
if (d == 0) return(BN_MASK2);
|
|
|
|
i=BN_num_bits_word(d);
|
|
assert((i == BN_BITS2) || (h > (BN_ULONG)1<<i));
|
|
|
|
i=BN_BITS2-i;
|
|
if (h >= d) h-=d;
|
|
|
|
if (i)
|
|
{
|
|
d<<=i;
|
|
h=(h<<i)|(l>>(BN_BITS2-i));
|
|
l<<=i;
|
|
}
|
|
dh=(d&BN_MASK2h)>>BN_BITS4;
|
|
dl=(d&BN_MASK2l);
|
|
for (;;)
|
|
{
|
|
if ((h>>BN_BITS4) == dh)
|
|
q=BN_MASK2l;
|
|
else
|
|
q=h/dh;
|
|
|
|
th=q*dh;
|
|
tl=dl*q;
|
|
for (;;)
|
|
{
|
|
t=h-th;
|
|
if ((t&BN_MASK2h) ||
|
|
((tl) <= (
|
|
(t<<BN_BITS4)|
|
|
((l&BN_MASK2h)>>BN_BITS4))))
|
|
break;
|
|
q--;
|
|
th-=dh;
|
|
tl-=dl;
|
|
}
|
|
t=(tl>>BN_BITS4);
|
|
tl=(tl<<BN_BITS4)&BN_MASK2h;
|
|
th+=t;
|
|
|
|
if (l < tl) th++;
|
|
l-=tl;
|
|
if (h < th)
|
|
{
|
|
h+=d;
|
|
q--;
|
|
}
|
|
h-=th;
|
|
|
|
if (--count == 0) break;
|
|
|
|
ret=q<<BN_BITS4;
|
|
h=((h<<BN_BITS4)|(l>>BN_BITS4))&BN_MASK2;
|
|
l=(l&BN_MASK2l)<<BN_BITS4;
|
|
}
|
|
ret|=q;
|
|
return(ret);
|
|
}
|
|
#endif /* !defined(BN_LLONG) && defined(BN_DIV2W) */
|
|
|
|
#ifdef BN_LLONG
|
|
BN_ULONG bn_add_words(BN_ULONG *r, BN_ULONG *a, BN_ULONG *b, int n)
|
|
{
|
|
BN_ULLONG ll=0;
|
|
|
|
assert(n >= 0);
|
|
if (n <= 0) return((BN_ULONG)0);
|
|
|
|
for (;;)
|
|
{
|
|
ll+=(BN_ULLONG)a[0]+b[0];
|
|
r[0]=(BN_ULONG)ll&BN_MASK2;
|
|
ll>>=BN_BITS2;
|
|
if (--n <= 0) break;
|
|
|
|
ll+=(BN_ULLONG)a[1]+b[1];
|
|
r[1]=(BN_ULONG)ll&BN_MASK2;
|
|
ll>>=BN_BITS2;
|
|
if (--n <= 0) break;
|
|
|
|
ll+=(BN_ULLONG)a[2]+b[2];
|
|
r[2]=(BN_ULONG)ll&BN_MASK2;
|
|
ll>>=BN_BITS2;
|
|
if (--n <= 0) break;
|
|
|
|
ll+=(BN_ULLONG)a[3]+b[3];
|
|
r[3]=(BN_ULONG)ll&BN_MASK2;
|
|
ll>>=BN_BITS2;
|
|
if (--n <= 0) break;
|
|
|
|
a+=4;
|
|
b+=4;
|
|
r+=4;
|
|
}
|
|
return((BN_ULONG)ll);
|
|
}
|
|
#else /* !BN_LLONG */
|
|
BN_ULONG bn_add_words(BN_ULONG *r, BN_ULONG *a, BN_ULONG *b, int n)
|
|
{
|
|
BN_ULONG c,l,t;
|
|
|
|
assert(n >= 0);
|
|
if (n <= 0) return((BN_ULONG)0);
|
|
|
|
c=0;
|
|
for (;;)
|
|
{
|
|
t=a[0];
|
|
t=(t+c)&BN_MASK2;
|
|
c=(t < c);
|
|
l=(t+b[0])&BN_MASK2;
|
|
c+=(l < t);
|
|
r[0]=l;
|
|
if (--n <= 0) break;
|
|
|
|
t=a[1];
|
|
t=(t+c)&BN_MASK2;
|
|
c=(t < c);
|
|
l=(t+b[1])&BN_MASK2;
|
|
c+=(l < t);
|
|
r[1]=l;
|
|
if (--n <= 0) break;
|
|
|
|
t=a[2];
|
|
t=(t+c)&BN_MASK2;
|
|
c=(t < c);
|
|
l=(t+b[2])&BN_MASK2;
|
|
c+=(l < t);
|
|
r[2]=l;
|
|
if (--n <= 0) break;
|
|
|
|
t=a[3];
|
|
t=(t+c)&BN_MASK2;
|
|
c=(t < c);
|
|
l=(t+b[3])&BN_MASK2;
|
|
c+=(l < t);
|
|
r[3]=l;
|
|
if (--n <= 0) break;
|
|
|
|
a+=4;
|
|
b+=4;
|
|
r+=4;
|
|
}
|
|
return((BN_ULONG)c);
|
|
}
|
|
#endif /* !BN_LLONG */
|