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Nuke crypto/arc4. Has not been used since 2003. Will not be missed.

This commit is contained in:
riastradh 2019-12-05 03:22:02 +00:00
parent aca9a2fd6e
commit 7ba101b07e
4 changed files with 1 additions and 176 deletions
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3
sys/conf/files
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@ -1,4 +1,4 @@
# $NetBSD: files,v 1.1244 2019/11/14 16:23:52 maxv Exp $
# $NetBSD: files,v 1.1245 2019/12/05 03:22:02 riastradh Exp $
# @(#)files.newconf 7.5 (Berkeley) 5/10/93
version 20171118
@ -191,7 +191,6 @@ defflag opt_machdep.h MACHDEP
# use it.
# Individual crypto transforms
include "crypto/arc4/files.arc4"
include "crypto/des/files.des"
include "crypto/blowfish/files.blowfish"
include "crypto/cast128/files.cast128"

120
sys/crypto/arc4/arc4.c
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@ -1,120 +0,0 @@
/* $NetBSD: arc4.c,v 1.7 2014/08/10 16:44:35 tls Exp $ */
/*
* ARC4 implementation
* A Stream Cipher Encryption Algorithm "Arcfour"
* <draft-kaukonen-cipher-arcfour-03.txt>
*/
/* This code illustrates a sample implementation
* of the Arcfour algorithm
* Copyright (c) April 29, 1997 Kalle Kaukonen.
* All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that this copyright
* notice and disclaimer are retained.
*
* THIS SOFTWARE IS PROVIDED BY KALLE KAUKONEN AND CONTRIBUTORS ``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 KALLE
* KAUKONEN 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.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: arc4.c,v 1.7 2014/08/10 16:44:35 tls Exp $");
#include <sys/types.h>
#include <crypto/arc4/arc4.h>
int
arc4_ctxlen(void)
{
return sizeof(struct arc4_ctx);
}
void
arc4_setkey(void *ctxp, const u_char *key, u_int keylen)
{
struct arc4_ctx *ctx = ctxp;
unsigned int i, t, u, ki, si;
unsigned int *state;
state = ctx->state;
ctx->x = 0;
ctx->y = 0;
for (i = 0; i < 256; i++)
state[i] = i;
ki = si = 0;
for (i = 0; i < 256; i++) {
t = state[i];
si = (si + key[ki] + t) & 0xff;
u = state[si];
state[si] = t;
state[i] = u;
if (++ki >= keylen)
ki = 0;
}
}
void
arc4_encrypt(void *ctxp, u_char *dst, const u_char *src, int len)
{
struct arc4_ctx *ctx = ctxp;
unsigned int x, y, sx, sy;
unsigned int *state;
const unsigned char *endsrc;
state = ctx->state;
x = ctx->x;
y = ctx->y;
for (endsrc = src + len; src != endsrc; src++, dst++) {
x = (x + 1) & 0xff;
sx = state[x];
y = (sx + y) & 0xff;
state[x] = sy = state[y];
state[y] = sx;
*dst = *src ^ state[(sx + sy) & 0xff];
}
ctx->x = x;
ctx->y = y;
}
void
arc4_stream(void *ctxp, u_char *dst, int len)
{
struct arc4_ctx *ctx = ctxp;
unsigned int x, y, sx, sy;
unsigned int *state;
const unsigned char *enddst;
state = ctx->state;
x = ctx->x;
y = ctx->y;
for (enddst = dst + len; dst != enddst; dst++) {
x = (x + 1) & 0xff;
sx = state[x];
y = (sx + y) & 0xff;
state[x] = sy = state[y];
state[y]= sx;
*dst = state[(sx + sy) & 0xff];
}
ctx->x = x;
ctx->y = y;
}
void
arc4_decrypt(void *ctxp, u_char *dst, const u_char *src, int len)
{
arc4_encrypt(ctxp, dst, src, len);
}

49
sys/crypto/arc4/arc4.h
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@ -1,49 +0,0 @@
/* $NetBSD: arc4.h,v 1.5 2014/08/10 16:44:35 tls Exp $ */
/*
* ARC4 implementation
* A Stream Cipher Encryption Algorithm "Arcfour"
* <draft-kaukonen-cipher-arcfour-03.txt>
*/
/* This code illustrates a sample implementation
* of the Arcfour algorithm
* Copyright (c) April 29, 1997 Kalle Kaukonen.
* All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that this copyright
* notice and disclaimer are retained.
*
* THIS SOFTWARE IS PROVIDED BY KALLE KAUKONEN AND CONTRIBUTORS ``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 KALLE
* KAUKONEN 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.
*/
#ifndef _CRYPTO_ARC4_H_
#define _CRYPTO_ARC4_H_
typedef struct arc4_ctx {
unsigned int x;
unsigned int y;
unsigned int state[256];
/* was unsigned char, changed to int for performance -- onoe */
} arc4_ctx_t;
int arc4_ctxlen(void);
void arc4_setkey(void *, const u_char *, unsigned int);
void arc4_encrypt(void *, u_char *, const u_char *, int);
void arc4_decrypt(void *, u_char *, const u_char *, int);
void arc4_stream(void *, u_char *, int);
#endif /* _CRYPTO_ARC4_H_ */

5
sys/crypto/arc4/files.arc4
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@ -1,5 +0,0 @@
# $NetBSD: files.arc4,v 1.2 2014/08/10 16:44:35 tls Exp $
define arc4
file crypto/arc4/arc4.c