Remove tools again. Should have done it with svn merge --reintegrate

1 files changed, 0 insertions, 172 deletions

diff --git a/tools/plink/sshcrcda.c b/tools/plink/sshcrcda.c
deleted file mode 100644
index c2cf705b2..000000000
--- a/tools/plink/sshcrcda.c
+++ /dev/null
@@ -1,172 +0,0 @@
-/*	$OpenBSD: deattack.c,v 1.14 2001/06/23 15:12:18 itojun Exp $	*/

-

-/*

- * Cryptographic attack detector for ssh - source code

- *

- * Copyright (c) 1998 CORE SDI S.A., Buenos Aires, Argentina.

- *

- * All rights reserved. Redistribution and use in source and binary

- * forms, with or without modification, are permitted provided that

- * this copyright notice is retained.

- *

- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED

- * WARRANTIES ARE DISCLAIMED. IN NO EVENT SHALL CORE SDI S.A. BE

- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY OR

- * CONSEQUENTIAL DAMAGES RESULTING FROM THE USE OR MISUSE OF THIS

- * SOFTWARE.

- *

- * Ariel Futoransky <futo@core-sdi.com>

- * <http://www.core-sdi.com>

- * 

- * Modified for use in PuTTY by Simon Tatham

- */

-

-#include <assert.h>

-#include "misc.h"

-#include "ssh.h"

-

-typedef unsigned char uchar;

-typedef unsigned short uint16;

-

-/* SSH Constants */

-#define SSH_MAXBLOCKS	(32 * 1024)

-#define SSH_BLOCKSIZE	(8)

-

-/* Hashing constants */

-#define HASH_MINSIZE	(8 * 1024)

-#define HASH_ENTRYSIZE	(sizeof(uint16))

-#define HASH_FACTOR(x)	((x)*3/2)

-#define HASH_UNUSEDCHAR	(0xff)

-#define HASH_UNUSED	(0xffff)

-#define HASH_IV     	(0xfffe)

-

-#define HASH_MINBLOCKS	(7*SSH_BLOCKSIZE)

-

-/* Hash function (Input keys are cipher results) */

-#define HASH(x)		GET_32BIT_MSB_FIRST(x)

-

-#define CMP(a, b)	(memcmp(a, b, SSH_BLOCKSIZE))

-

-uchar ONE[4] = { 1, 0, 0, 0 };

-uchar ZERO[4] = { 0, 0, 0, 0 };

-

-struct crcda_ctx {

-    uint16 *h;

-    uint32 n;

-};

-

-void *crcda_make_context(void)

-{

-    struct crcda_ctx *ret = snew(struct crcda_ctx);

-    ret->h = NULL;

-    ret->n = HASH_MINSIZE / HASH_ENTRYSIZE;

-    return ret;

-}

-

-void crcda_free_context(void *handle)

-{

-    struct crcda_ctx *ctx = (struct crcda_ctx *)handle;

-    if (ctx) {

-	sfree(ctx->h);

-	ctx->h = NULL;

-	sfree(ctx);

-    }

-}

-

-static void crc_update(uint32 *a, void *b)

-{

-    *a = crc32_update(*a, b, 4);

-}

-

-/* detect if a block is used in a particular pattern */

-static int check_crc(uchar *S, uchar *buf, uint32 len, uchar *IV)

-{

-    uint32 crc;

-    uchar *c;

-

-    crc = 0;

-    if (IV && !CMP(S, IV)) {

-        crc_update(&crc, ONE);

-        crc_update(&crc, ZERO);

-    }

-    for (c = buf; c < buf + len; c += SSH_BLOCKSIZE) {

-        if (!CMP(S, c)) {

-            crc_update(&crc, ONE);

-            crc_update(&crc, ZERO);

-        } else {

-            crc_update(&crc, ZERO);

-            crc_update(&crc, ZERO);

-        }

-    }

-    return (crc == 0);

-}

-

-/* Detect a crc32 compensation attack on a packet */

-int detect_attack(void *handle, uchar *buf, uint32 len, uchar *IV)

-{

-    struct crcda_ctx *ctx = (struct crcda_ctx *)handle;

-    register uint32 i, j;

-    uint32 l;

-    register uchar *c;

-    uchar *d;

-

-    assert(!(len > (SSH_MAXBLOCKS * SSH_BLOCKSIZE) ||

-             len % SSH_BLOCKSIZE != 0));

-    for (l = ctx->n; l < HASH_FACTOR(len / SSH_BLOCKSIZE); l = l << 2)

-        ;

-

-    if (ctx->h == NULL) {

-        ctx->n = l;

-        ctx->h = snewn(ctx->n, uint16);

-    } else {

-        if (l > ctx->n) {

-            ctx->n = l;

-            ctx->h = sresize(ctx->h, ctx->n, uint16);

-        }

-    }

-

-    if (len <= HASH_MINBLOCKS) {

-        for (c = buf; c < buf + len; c += SSH_BLOCKSIZE) {

-            if (IV && (!CMP(c, IV))) {

-                if ((check_crc(c, buf, len, IV)))

-                    return 1;          /* attack detected */

-                else

-                    break;

-            }

-            for (d = buf; d < c; d += SSH_BLOCKSIZE) {

-                if (!CMP(c, d)) {

-                    if ((check_crc(c, buf, len, IV)))

-                        return 1;      /* attack detected */

-                    else

-                        break;

-                }

-            }

-        }

-        return 0;                      /* ok */

-    }

-    memset(ctx->h, HASH_UNUSEDCHAR, ctx->n * HASH_ENTRYSIZE);

-

-    if (IV)

-        ctx->h[HASH(IV) & (ctx->n - 1)] = HASH_IV;

-

-    for (c = buf, j = 0; c < (buf + len); c += SSH_BLOCKSIZE, j++) {

-        for (i = HASH(c) & (ctx->n - 1); ctx->h[i] != HASH_UNUSED;

-             i = (i + 1) & (ctx->n - 1)) {

-            if (ctx->h[i] == HASH_IV) {

-                if (!CMP(c, IV)) {

-                    if (check_crc(c, buf, len, IV))

-                        return 1;      /* attack detected */

-                    else

-                        break;

-                }

-            } else if (!CMP(c, buf + ctx->h[i] * SSH_BLOCKSIZE)) {

-                if (check_crc(c, buf, len, IV))

-                    return 1;          /* attack detected */

-                else

-                    break;

-            }

-        }

-        ctx->h[i] = j;

-    }

-    return 0;                          /* ok */

-}