diff options
Diffstat (limited to 'crypto/openssh/cipher-bf1.c')
| -rw-r--r-- | crypto/openssh/cipher-bf1.c | 108 |
1 files changed, 0 insertions, 108 deletions
diff --git a/crypto/openssh/cipher-bf1.c b/crypto/openssh/cipher-bf1.c deleted file mode 100644 index 292488c..0000000 --- a/crypto/openssh/cipher-bf1.c +++ /dev/null @@ -1,108 +0,0 @@ -/* $OpenBSD: cipher-bf1.c,v 1.5 2006/08/03 03:34:42 deraadt Exp $ */ -/* - * Copyright (c) 2003 Markus Friedl. 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, 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. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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. - */ - -#include "includes.h" - -#include <sys/types.h> - -#include <openssl/evp.h> - -#include <stdarg.h> -#include <string.h> - -#include "xmalloc.h" -#include "log.h" - -#if OPENSSL_VERSION_NUMBER < 0x00906000L -#define SSH_OLD_EVP -#endif - -/* - * SSH1 uses a variation on Blowfish, all bytes must be swapped before - * and after encryption/decryption. Thus the swap_bytes stuff (yuk). - */ - -const EVP_CIPHER * evp_ssh1_bf(void); - -static void -swap_bytes(const u_char *src, u_char *dst, int n) -{ - u_char c[4]; - - /* Process 4 bytes every lap. */ - for (n = n / 4; n > 0; n--) { - c[3] = *src++; - c[2] = *src++; - c[1] = *src++; - c[0] = *src++; - - *dst++ = c[0]; - *dst++ = c[1]; - *dst++ = c[2]; - *dst++ = c[3]; - } -} - -#ifdef SSH_OLD_EVP -static void bf_ssh1_init (EVP_CIPHER_CTX * ctx, const unsigned char *key, - const unsigned char *iv, int enc) -{ - if (iv != NULL) - memcpy (&(ctx->oiv[0]), iv, 8); - memcpy (&(ctx->iv[0]), &(ctx->oiv[0]), 8); - if (key != NULL) - BF_set_key (&(ctx->c.bf_ks), EVP_CIPHER_CTX_key_length (ctx), - key); -} -#endif - -static int (*orig_bf)(EVP_CIPHER_CTX *, u_char *, const u_char *, u_int) = NULL; - -static int -bf_ssh1_cipher(EVP_CIPHER_CTX *ctx, u_char *out, const u_char *in, u_int len) -{ - int ret; - - swap_bytes(in, out, len); - ret = (*orig_bf)(ctx, out, out, len); - swap_bytes(out, out, len); - return (ret); -} - -const EVP_CIPHER * -evp_ssh1_bf(void) -{ - static EVP_CIPHER ssh1_bf; - - memcpy(&ssh1_bf, EVP_bf_cbc(), sizeof(EVP_CIPHER)); - orig_bf = ssh1_bf.do_cipher; - ssh1_bf.nid = NID_undef; -#ifdef SSH_OLD_EVP - ssh1_bf.init = bf_ssh1_init; -#endif - ssh1_bf.do_cipher = bf_ssh1_cipher; - ssh1_bf.key_len = 32; - return (&ssh1_bf); -} |
