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-rw-r--r--libssh/libcrypto.c443
1 files changed, 0 insertions, 443 deletions
diff --git a/libssh/libcrypto.c b/libssh/libcrypto.c
deleted file mode 100644
index f43a91eb..00000000
--- a/libssh/libcrypto.c
+++ /dev/null
@@ -1,443 +0,0 @@
-/*
- * This file is part of the SSH Library
- *
- * Copyright (c) 2009 by Aris Adamantiadis
- *
- * The SSH Library is free software; you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License as published by
- * the Free Software Foundation; either version 2.1 of the License, or (at your
- * option) any later version.
- *
- * The SSH Library is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
- * License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public License
- * along with the SSH Library; see the file COPYING. If not, write to
- * the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
- * MA 02111-1307, USA.
- */
-
-
-#include <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-
-#include "libssh/priv.h"
-#include "libssh/session.h"
-#include "libssh/crypto.h"
-#include "libssh/wrapper.h"
-#include "libssh/libcrypto.h"
-
-#ifdef HAVE_LIBCRYPTO
-
-#include <openssl/sha.h>
-#include <openssl/md5.h>
-#include <openssl/dsa.h>
-#include <openssl/rsa.h>
-#include <openssl/hmac.h>
-#include <openssl/opensslv.h>
-#ifdef HAVE_OPENSSL_AES_H
-#define HAS_AES
-#include <openssl/aes.h>
-#endif
-#ifdef HAVE_OPENSSL_BLOWFISH_H
-#define HAS_BLOWFISH
-#include <openssl/blowfish.h>
-#endif
-#ifdef HAVE_OPENSSL_DES_H
-#define HAS_DES
-#include <openssl/des.h>
-#endif
-
-#if (OPENSSL_VERSION_NUMBER<0x00907000L)
-#define OLD_CRYPTO
-#endif
-
-#include "libssh/crypto.h"
-
-static int alloc_key(struct crypto_struct *cipher) {
- cipher->key = malloc(cipher->keylen);
- if (cipher->key == NULL) {
- return -1;
- }
-
- return 0;
-}
-
-SHACTX sha1_init(void) {
- SHACTX c = malloc(sizeof(*c));
- if (c == NULL) {
- return NULL;
- }
- SHA1_Init(c);
-
- return c;
-}
-
-void sha1_update(SHACTX c, const void *data, unsigned long len) {
- SHA1_Update(c,data,len);
-}
-
-void sha1_final(unsigned char *md, SHACTX c) {
- SHA1_Final(md, c);
- SAFE_FREE(c);
-}
-
-void sha1(unsigned char *digest, int len, unsigned char *hash) {
- SHA1(digest, len, hash);
-}
-
-MD5CTX md5_init(void) {
- MD5CTX c = malloc(sizeof(*c));
- if (c == NULL) {
- return NULL;
- }
-
- MD5_Init(c);
-
- return c;
-}
-
-void md5_update(MD5CTX c, const void *data, unsigned long len) {
- MD5_Update(c, data, len);
-}
-
-void md5_final(unsigned char *md, MD5CTX c) {
- MD5_Final(md,c);
- SAFE_FREE(c);
-}
-
-HMACCTX hmac_init(const void *key, int len, int type) {
- HMACCTX ctx = NULL;
-
- ctx = malloc(sizeof(*ctx));
- if (ctx == NULL) {
- return NULL;
- }
-
-#ifndef OLD_CRYPTO
- HMAC_CTX_init(ctx); // openssl 0.9.7 requires it.
-#endif
-
- switch(type) {
- case HMAC_SHA1:
- HMAC_Init(ctx, key, len, EVP_sha1());
- break;
- case HMAC_MD5:
- HMAC_Init(ctx, key, len, EVP_md5());
- break;
- default:
- SAFE_FREE(ctx);
- ctx = NULL;
- }
-
- return ctx;
-}
-
-void hmac_update(HMACCTX ctx, const void *data, unsigned long len) {
- HMAC_Update(ctx, data, len);
-}
-
-void hmac_final(HMACCTX ctx, unsigned char *hashmacbuf, unsigned int *len) {
- HMAC_Final(ctx,hashmacbuf,len);
-
-#ifndef OLD_CRYPTO
- HMAC_CTX_cleanup(ctx);
-#else
- HMAC_cleanup(ctx);
-#endif
-
- SAFE_FREE(ctx);
-}
-
-#ifdef HAS_BLOWFISH
-/* the wrapper functions for blowfish */
-static int blowfish_set_key(struct crypto_struct *cipher, void *key){
- if (cipher->key == NULL) {
- if (alloc_key(cipher) < 0) {
- return -1;
- }
- BF_set_key(cipher->key, 16, key);
- }
-
- return 0;
-}
-
-static void blowfish_encrypt(struct crypto_struct *cipher, void *in,
- void *out, unsigned long len, void *IV) {
- BF_cbc_encrypt(in, out, len, cipher->key, IV, BF_ENCRYPT);
-}
-
-static void blowfish_decrypt(struct crypto_struct *cipher, void *in,
- void *out, unsigned long len, void *IV) {
- BF_cbc_encrypt(in, out, len, cipher->key, IV, BF_DECRYPT);
-}
-#endif /* HAS_BLOWFISH */
-
-#ifdef HAS_AES
-static int aes_set_encrypt_key(struct crypto_struct *cipher, void *key) {
- if (cipher->key == NULL) {
- if (alloc_key(cipher) < 0) {
- return -1;
- }
- if (AES_set_encrypt_key(key,cipher->keysize,cipher->key) < 0) {
- SAFE_FREE(cipher->key);
- return -1;
- }
- }
-
- return 0;
-}
-static int aes_set_decrypt_key(struct crypto_struct *cipher, void *key) {
- if (cipher->key == NULL) {
- if (alloc_key(cipher) < 0) {
- return -1;
- }
- if (AES_set_decrypt_key(key,cipher->keysize,cipher->key) < 0) {
- SAFE_FREE(cipher->key);
- return -1;
- }
- }
-
- return 0;
-}
-
-static void aes_encrypt(struct crypto_struct *cipher, void *in, void *out,
- unsigned long len, void *IV) {
- AES_cbc_encrypt(in, out, len, cipher->key, IV, AES_ENCRYPT);
-}
-
-static void aes_decrypt(struct crypto_struct *cipher, void *in, void *out,
- unsigned long len, void *IV) {
- AES_cbc_encrypt(in, out, len, cipher->key, IV, AES_DECRYPT);
-}
-
-#ifndef BROKEN_AES_CTR
-/* OpenSSL until 0.9.7c has a broken AES_ctr128_encrypt implementation which
- * increments the counter from 2^64 instead of 1. It's better not to use it
- */
-
-/** @internal
- * @brief encrypts/decrypts data with stream cipher AES_ctr128. 128 bits is actually
- * the size of the CTR counter and incidentally the blocksize, but not the keysize.
- * @param len[in] must be a multiple of AES128 block size.
- */
-static void aes_ctr128_encrypt(struct crypto_struct *cipher, void *in, void *out,
- unsigned long len, void *IV) {
- unsigned char tmp_buffer[128/8];
- unsigned int num=0;
- /* Some things are special with ctr128 :
- * In this case, tmp_buffer is not being used, because it is used to store temporary data
- * when an encryption is made on lengths that are not multiple of blocksize.
- * Same for num, which is being used to store the current offset in blocksize in CTR
- * function.
- */
- AES_ctr128_encrypt(in, out, len, cipher->key, IV, tmp_buffer, &num);
-}
-#endif /* BROKEN_AES_CTR */
-#endif /* HAS_AES */
-
-#ifdef HAS_DES
-static int des3_set_key(struct crypto_struct *cipher, void *key) {
- if (cipher->key == NULL) {
- if (alloc_key(cipher) < 0) {
- return -1;
- }
-
- DES_set_odd_parity(key);
- DES_set_odd_parity((void*)((uint8_t*)key + 8));
- DES_set_odd_parity((void*)((uint8_t*)key + 16));
- DES_set_key_unchecked(key, cipher->key);
- DES_set_key_unchecked((void*)((uint8_t*)key + 8), (void*)((uint8_t*)cipher->key + sizeof(DES_key_schedule)));
- DES_set_key_unchecked((void*)((uint8_t*)key + 16), (void*)((uint8_t*)cipher->key + 2 * sizeof(DES_key_schedule)));
- }
-
- return 0;
-}
-
-static void des3_encrypt(struct crypto_struct *cipher, void *in,
- void *out, unsigned long len, void *IV) {
- DES_ede3_cbc_encrypt(in, out, len, cipher->key,
- (void*)((uint8_t*)cipher->key + sizeof(DES_key_schedule)),
- (void*)((uint8_t*)cipher->key + 2 * sizeof(DES_key_schedule)),
- IV, 1);
-}
-
-static void des3_decrypt(struct crypto_struct *cipher, void *in,
- void *out, unsigned long len, void *IV) {
- DES_ede3_cbc_encrypt(in, out, len, cipher->key,
- (void*)((uint8_t*)cipher->key + sizeof(DES_key_schedule)),
- (void*)((uint8_t*)cipher->key + 2 * sizeof(DES_key_schedule)),
- IV, 0);
-}
-
-static void des3_1_encrypt(struct crypto_struct *cipher, void *in,
- void *out, unsigned long len, void *IV) {
-#ifdef DEBUG_CRYPTO
- ssh_print_hexa("Encrypt IV before", IV, 24);
-#endif
- DES_ncbc_encrypt(in, out, len, cipher->key, IV, 1);
- DES_ncbc_encrypt(out, in, len, (void*)((uint8_t*)cipher->key + sizeof(DES_key_schedule)),
- (void*)((uint8_t*)IV + 8), 0);
- DES_ncbc_encrypt(in, out, len, (void*)((uint8_t*)cipher->key + 2 * sizeof(DES_key_schedule)),
- (void*)((uint8_t*)IV + 16), 1);
-#ifdef DEBUG_CRYPTO
- ssh_print_hexa("Encrypt IV after", IV, 24);
-#endif
-}
-
-static void des3_1_decrypt(struct crypto_struct *cipher, void *in,
- void *out, unsigned long len, void *IV) {
-#ifdef DEBUG_CRYPTO
- ssh_print_hexa("Decrypt IV before", IV, 24);
-#endif
-
- DES_ncbc_encrypt(in, out, len, (void*)((uint8_t*)cipher->key + 2 * sizeof(DES_key_schedule)),
- IV, 0);
- DES_ncbc_encrypt(out, in, len, (void*)((uint8_t*)cipher->key + sizeof(DES_key_schedule)),
- (void*)((uint8_t*)IV + 8), 1);
- DES_ncbc_encrypt(in, out, len, cipher->key, (void*)((uint8_t*)IV + 16), 0);
-
-#ifdef DEBUG_CRYPTO
- ssh_print_hexa("Decrypt IV after", IV, 24);
-#endif
-}
-
-#endif /* HAS_DES */
-
-/*
- * The table of supported ciphers
- *
- * WARNING: If you modify crypto_struct, you must make sure the order is
- * correct!
- */
-static struct crypto_struct ssh_ciphertab[] = {
-#ifdef HAS_BLOWFISH
- {
- "blowfish-cbc",
- 8,
- sizeof (BF_KEY),
- NULL,
- 128,
- blowfish_set_key,
- blowfish_set_key,
- blowfish_encrypt,
- blowfish_decrypt
- },
-#endif /* HAS_BLOWFISH */
-#ifdef HAS_AES
-#ifndef BROKEN_AES_CTR
- {
- "aes128-ctr",
- 16,
- sizeof(AES_KEY),
- NULL,
- 128,
- aes_set_encrypt_key,
- aes_set_encrypt_key,
- aes_ctr128_encrypt,
- aes_ctr128_encrypt
- },
- {
- "aes192-ctr",
- 16,
- sizeof(AES_KEY),
- NULL,
- 192,
- aes_set_encrypt_key,
- aes_set_encrypt_key,
- aes_ctr128_encrypt,
- aes_ctr128_encrypt
- },
- {
- "aes256-ctr",
- 16,
- sizeof(AES_KEY),
- NULL,
- 256,
- aes_set_encrypt_key,
- aes_set_encrypt_key,
- aes_ctr128_encrypt,
- aes_ctr128_encrypt
- },
-#endif /* BROKEN_AES_CTR */
- {
- "aes128-cbc",
- 16,
- sizeof(AES_KEY),
- NULL,
- 128,
- aes_set_encrypt_key,
- aes_set_decrypt_key,
- aes_encrypt,
- aes_decrypt
- },
- {
- "aes192-cbc",
- 16,
- sizeof(AES_KEY),
- NULL,
- 192,
- aes_set_encrypt_key,
- aes_set_decrypt_key,
- aes_encrypt,
- aes_decrypt
- },
- {
- "aes256-cbc",
- 16,
- sizeof(AES_KEY),
- NULL,
- 256,
- aes_set_encrypt_key,
- aes_set_decrypt_key,
- aes_encrypt,
- aes_decrypt
- },
-#endif /* HAS_AES */
-#ifdef HAS_DES
- {
- "3des-cbc",
- 8,
- sizeof(DES_key_schedule) * 3,
- NULL,
- 192,
- des3_set_key,
- des3_set_key,
- des3_encrypt,
- des3_decrypt
- },
- {
- "3des-cbc-ssh1",
- 8,
- sizeof(DES_key_schedule) * 3,
- NULL,
- 192,
- des3_set_key,
- des3_set_key,
- des3_1_encrypt,
- des3_1_decrypt
- },
-#endif /* HAS_DES */
- {
- NULL,
- 0,
- 0,
- NULL,
- 0,
- NULL,
- NULL,
- NULL,
- NULL
- }
-};
-
-
-struct crypto_struct *ssh_get_ciphertab(){
- return ssh_ciphertab;
-}
-
-#endif /* LIBCRYPTO */
-
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