Separation work between openssl and libgcrypt
Этот коммит содержится в:
Aris Adamantiadis
родитель
b23b3f1d99
Коммит
2234c115f2
74
include/libssh/libcrypto.h
Обычный файл
74
include/libssh/libcrypto.h
Обычный файл
@ -0,0 +1,74 @@
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/*
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* This file is part of the SSH Library
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*
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* Copyright (c) 2009 by Aris Adamantiadis
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*
|
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* 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
|
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* the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
|
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* MA 02111-1307, USA.
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*/
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#ifndef LIBCRYPTO_H_
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#define LIBCRYPTO_H_
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#include "config.h"
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#ifdef HAVE_LIBCRYPTO
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#include <openssl/dsa.h>
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#include <openssl/rsa.h>
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#include <openssl/sha.h>
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#include <openssl/md5.h>
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#include <openssl/hmac.h>
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typedef SHA_CTX* SHACTX;
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typedef MD5_CTX* MD5CTX;
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typedef HMAC_CTX* HMACCTX;
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#define SHA_DIGEST_LEN SHA_DIGEST_LENGTH
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#ifdef MD5_DIGEST_LEN
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#undef MD5_DIGEST_LEN
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#endif
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#define MD5_DIGEST_LEN MD5_DIGEST_LENGTH
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#include <openssl/bn.h>
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#include <openssl/opensslv.h>
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#define OPENSSL_0_9_7b 0x0090702fL
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#if (OPENSSL_VERSION_NUMBER <= OPENSSL_0_9_7b)
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#define BROKEN_AES_CTR
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#endif
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typedef BIGNUM* bignum;
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typedef BN_CTX* bignum_CTX;
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#define bignum_new() BN_new()
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#define bignum_free(num) BN_clear_free(num)
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#define bignum_set_word(bn,n) BN_set_word(bn,n)
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#define bignum_bin2bn(bn,datalen,data) BN_bin2bn(bn,datalen,data)
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#define bignum_bn2dec(num) BN_bn2dec(num)
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#define bignum_dec2bn(bn,data) BN_dec2bn(data,bn)
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#define bignum_bn2hex(num) BN_bn2hex(num)
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#define bignum_rand(rnd, bits, top, bottom) BN_rand(rnd,bits,top,bottom)
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#define bignum_ctx_new() BN_CTX_new()
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#define bignum_ctx_free(num) BN_CTX_free(num)
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#define bignum_mod_exp(dest,generator,exp,modulo,ctx) BN_mod_exp(dest,generator,exp,modulo,ctx)
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#define bignum_num_bytes(num) BN_num_bytes(num)
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#define bignum_num_bits(num) BN_num_bits(num)
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#define bignum_is_bit_set(num,bit) BN_is_bit_set(num,bit)
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#define bignum_bn2bin(num,ptr) BN_bn2bin(num,ptr)
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#define bignum_cmp(num1,num2) BN_cmp(num1,num2)
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struct crypto_struct *ssh_get_ciphertab(void);
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#endif /* HAVE_LIBCRYPTO */
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#endif /* LIBCRYPTO_H_ */
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60
include/libssh/libgcrypt.h
Обычный файл
60
include/libssh/libgcrypt.h
Обычный файл
@ -0,0 +1,60 @@
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/*
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* This file is part of the SSH Library
|
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*
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* Copyright (c) 2009 by Aris Adamantiadis
|
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*
|
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* 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,
|
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* MA 02111-1307, USA.
|
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*/
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#ifndef LIBGCRYPT_H_
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#define LIBGCRYPT_H_
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#include "config.h"
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#ifdef HAVE_LIBGCRYPT
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#include <gcrypt.h>
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typedef gcry_md_hd_t SHACTX;
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typedef gcry_md_hd_t MD5CTX;
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typedef gcry_md_hd_t HMACCTX;
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#define SHA_DIGEST_LEN 20
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#define MD5_DIGEST_LEN 16
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#define EVP_MAX_MD_SIZE 36
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typedef gcry_mpi_t bignum;
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#define bignum_new() gcry_mpi_new(0)
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#define bignum_free(num) gcry_mpi_release(num)
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#define bignum_set_word(bn,n) gcry_mpi_set_ui(bn,n)
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#define bignum_bin2bn(bn,datalen,data) gcry_mpi_scan(data,GCRYMPI_FMT_USG,bn,datalen,NULL)
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#define bignum_bn2dec(num) my_gcry_bn2dec(num)
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#define bignum_dec2bn(num, data) my_gcry_dec2bn(data, num)
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#define bignum_bn2hex(num,data) gcry_mpi_aprint(GCRYMPI_FMT_HEX,data,NULL,num)
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#define bignum_hex2bn(num,datalen,data) gcry_mpi_scan(num,GCRYMPI_FMT_HEX,data,datalen,NULL)
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#define bignum_rand(num,bits) gcry_mpi_randomize(num,bits,GCRY_STRONG_RANDOM),gcry_mpi_set_bit(num,bits-1),gcry_mpi_set_bit(num,0)
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#define bignum_mod_exp(dest,generator,exp,modulo) gcry_mpi_powm(dest,generator,exp,modulo)
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#define bignum_num_bits(num) gcry_mpi_get_nbits(num)
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#define bignum_num_bytes(num) ((gcry_mpi_get_nbits(num)+7)/8)
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#define bignum_is_bit_set(num,bit) gcry_mpi_test_bit(num,bit)
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#define bignum_bn2bin(num,datalen,data) gcry_mpi_print(GCRYMPI_FMT_USG,data,datalen,NULL,num)
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#define bignum_cmp(num1,num2) gcry_mpi_cmp(num1,num2)
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#endif /* HAVE_LIBGCRYPT */
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struct crypto_struct *ssh_get_ciphertab(void);
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#endif /* LIBGCRYPT_H_ */
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@ -23,79 +23,8 @@
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#define WRAPPER_H_
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#include "config.h"
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#ifdef MD5_DIGEST_LEN
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#undef MD5_DIGEST_LEN
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#endif
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/* wrapper things */
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#ifdef HAVE_LIBGCRYPT
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#include <gcrypt.h>
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typedef gcry_md_hd_t SHACTX;
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typedef gcry_md_hd_t MD5CTX;
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typedef gcry_md_hd_t HMACCTX;
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#define SHA_DIGEST_LEN 20
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#define MD5_DIGEST_LEN 16
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#define EVP_MAX_MD_SIZE 36
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typedef gcry_mpi_t bignum;
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#define bignum_new() gcry_mpi_new(0)
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#define bignum_free(num) gcry_mpi_release(num)
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#define bignum_set_word(bn,n) gcry_mpi_set_ui(bn,n)
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#define bignum_bin2bn(bn,datalen,data) gcry_mpi_scan(data,GCRYMPI_FMT_USG,bn,datalen,NULL)
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#define bignum_bn2dec(num) my_gcry_bn2dec(num)
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#define bignum_dec2bn(num, data) my_gcry_dec2bn(data, num)
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#define bignum_bn2hex(num,data) gcry_mpi_aprint(GCRYMPI_FMT_HEX,data,NULL,num)
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#define bignum_hex2bn(num,datalen,data) gcry_mpi_scan(num,GCRYMPI_FMT_HEX,data,datalen,NULL)
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#define bignum_rand(num,bits) gcry_mpi_randomize(num,bits,GCRY_STRONG_RANDOM),gcry_mpi_set_bit(num,bits-1),gcry_mpi_set_bit(num,0)
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#define bignum_mod_exp(dest,generator,exp,modulo) gcry_mpi_powm(dest,generator,exp,modulo)
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#define bignum_num_bits(num) gcry_mpi_get_nbits(num)
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#define bignum_num_bytes(num) ((gcry_mpi_get_nbits(num)+7)/8)
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#define bignum_is_bit_set(num,bit) gcry_mpi_test_bit(num,bit)
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#define bignum_bn2bin(num,datalen,data) gcry_mpi_print(GCRYMPI_FMT_USG,data,datalen,NULL,num)
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#define bignum_cmp(num1,num2) gcry_mpi_cmp(num1,num2)
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#elif defined HAVE_LIBCRYPTO
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#include <openssl/dsa.h>
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#include <openssl/rsa.h>
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#include <openssl/sha.h>
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#include <openssl/md5.h>
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#include <openssl/hmac.h>
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typedef SHA_CTX* SHACTX;
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typedef MD5_CTX* MD5CTX;
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typedef HMAC_CTX* HMACCTX;
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#define SHA_DIGEST_LEN SHA_DIGEST_LENGTH
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#define MD5_DIGEST_LEN MD5_DIGEST_LENGTH
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#include <openssl/bn.h>
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#include <openssl/opensslv.h>
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#define OPENSSL_0_9_7b 0x0090702fL
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#if (OPENSSL_VERSION_NUMBER <= OPENSSL_0_9_7b)
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#define BROKEN_AES_CTR
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#endif
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typedef BIGNUM* bignum;
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typedef BN_CTX* bignum_CTX;
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#define bignum_new() BN_new()
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#define bignum_free(num) BN_clear_free(num)
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#define bignum_set_word(bn,n) BN_set_word(bn,n)
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#define bignum_bin2bn(bn,datalen,data) BN_bin2bn(bn,datalen,data)
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#define bignum_bn2dec(num) BN_bn2dec(num)
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#define bignum_dec2bn(bn,data) BN_dec2bn(data,bn)
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#define bignum_bn2hex(num) BN_bn2hex(num)
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#define bignum_rand(rnd, bits, top, bottom) BN_rand(rnd,bits,top,bottom)
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#define bignum_ctx_new() BN_CTX_new()
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#define bignum_ctx_free(num) BN_CTX_free(num)
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#define bignum_mod_exp(dest,generator,exp,modulo,ctx) BN_mod_exp(dest,generator,exp,modulo,ctx)
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#define bignum_num_bytes(num) BN_num_bytes(num)
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#define bignum_num_bits(num) BN_num_bits(num)
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#define bignum_is_bit_set(num,bit) BN_is_bit_set(num,bit)
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#define bignum_bn2bin(num,ptr) BN_bn2bin(num,ptr)
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#define bignum_cmp(num1,num2) BN_cmp(num1,num2)
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#endif /* OPENSSL_CRYPTO */
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#include "libssh/libcrypto.h"
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#include "libssh/libgcrypt.h"
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MD5CTX md5_init(void);
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void md5_update(MD5CTX c, const void *data, unsigned long len);
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@ -93,6 +93,8 @@ set(libssh_SRCS
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keyfiles.c
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keys.c
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legacy.c
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libcrypto.c
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libgcrypt.c
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log.c
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match.c
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messages.c
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|
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443
libssh/libcrypto.c
Обычный файл
443
libssh/libcrypto.c
Обычный файл
@ -0,0 +1,443 @@
|
||||
/*
|
||||
* 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.
|
||||
*/
|
||||
|
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|
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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|
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#include "libssh/priv.h"
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#include "libssh/session.h"
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#include "libssh/crypto.h"
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#include "libssh/wrapper.h"
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#include "libssh/libcrypto.h"
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|
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#ifdef HAVE_LIBCRYPTO
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|
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#include <openssl/sha.h>
|
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#include <openssl/md5.h>
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#include <openssl/dsa.h>
|
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#include <openssl/rsa.h>
|
||||
#include <openssl/hmac.h>
|
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#include <openssl/opensslv.h>
|
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#ifdef HAVE_OPENSSL_AES_H
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#define HAS_AES
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#include <openssl/aes.h>
|
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#endif
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#ifdef HAVE_OPENSSL_BLOWFISH_H
|
||||
#define HAS_BLOWFISH
|
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#include <openssl/blowfish.h>
|
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#endif
|
||||
#ifdef HAVE_OPENSSL_DES_H
|
||||
#define HAS_DES
|
||||
#include <openssl/des.h>
|
||||
#endif
|
||||
|
||||
#if (OPENSSL_VERSION_NUMBER<0x00907000L)
|
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#define OLD_CRYPTO
|
||||
#endif
|
||||
|
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#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;
|
||||
}
|
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|
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SHACTX sha1_init(void) {
|
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SHACTX c = malloc(sizeof(*c));
|
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if (c == NULL) {
|
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return NULL;
|
||||
}
|
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SHA1_Init(c);
|
||||
|
||||
return c;
|
||||
}
|
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|
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void sha1_update(SHACTX c, const void *data, unsigned long len) {
|
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SHA1_Update(c,data,len);
|
||||
}
|
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|
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void sha1_final(unsigned char *md, SHACTX c) {
|
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SHA1_Final(md, c);
|
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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 */
|
||||
|
||||
423
libssh/libgcrypt.c
Обычный файл
423
libssh/libgcrypt.c
Обычный файл
@ -0,0 +1,423 @@
|
||||
/*
|
||||
* 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"
|
||||
|
||||
#ifdef HAVE_LIBGCRYPT
|
||||
#include <gcrypt.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 ctx = NULL;
|
||||
gcry_md_open(&ctx, GCRY_MD_SHA1, 0);
|
||||
|
||||
return ctx;
|
||||
}
|
||||
|
||||
void sha1_update(SHACTX c, const void *data, unsigned long len) {
|
||||
gcry_md_write(c, data, len);
|
||||
}
|
||||
|
||||
void sha1_final(unsigned char *md, SHACTX c) {
|
||||
gcry_md_final(c);
|
||||
memcpy(md, gcry_md_read(c, 0), SHA_DIGEST_LEN);
|
||||
gcry_md_close(c);
|
||||
}
|
||||
|
||||
void sha1(unsigned char *digest, int len, unsigned char *hash) {
|
||||
gcry_md_hash_buffer(GCRY_MD_SHA1, hash, digest, len);
|
||||
}
|
||||
|
||||
MD5CTX md5_init(void) {
|
||||
MD5CTX c = NULL;
|
||||
gcry_md_open(&c, GCRY_MD_MD5, 0);
|
||||
|
||||
return c;
|
||||
}
|
||||
|
||||
void md5_update(MD5CTX c, const void *data, unsigned long len) {
|
||||
gcry_md_write(c,data,len);
|
||||
}
|
||||
|
||||
void md5_final(unsigned char *md, MD5CTX c) {
|
||||
gcry_md_final(c);
|
||||
memcpy(md, gcry_md_read(c, 0), MD5_DIGEST_LEN);
|
||||
gcry_md_close(c);
|
||||
}
|
||||
|
||||
HMACCTX hmac_init(const void *key, int len, int type) {
|
||||
HMACCTX c = NULL;
|
||||
|
||||
switch(type) {
|
||||
case HMAC_SHA1:
|
||||
gcry_md_open(&c, GCRY_MD_SHA1, GCRY_MD_FLAG_HMAC);
|
||||
break;
|
||||
case HMAC_MD5:
|
||||
gcry_md_open(&c, GCRY_MD_MD5, GCRY_MD_FLAG_HMAC);
|
||||
break;
|
||||
default:
|
||||
c = NULL;
|
||||
}
|
||||
|
||||
gcry_md_setkey(c, key, len);
|
||||
|
||||
return c;
|
||||
}
|
||||
|
||||
void hmac_update(HMACCTX c, const void *data, unsigned long len) {
|
||||
gcry_md_write(c, data, len);
|
||||
}
|
||||
|
||||
void hmac_final(HMACCTX c, unsigned char *hashmacbuf, unsigned int *len) {
|
||||
*len = gcry_md_get_algo_dlen(gcry_md_get_algo(c));
|
||||
memcpy(hashmacbuf, gcry_md_read(c, 0), *len);
|
||||
gcry_md_close(c);
|
||||
}
|
||||
|
||||
/* the wrapper functions for blowfish */
|
||||
static int blowfish_set_key(struct crypto_struct *cipher, void *key, void *IV){
|
||||
if (cipher->key == NULL) {
|
||||
if (alloc_key(cipher) < 0) {
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (gcry_cipher_open(&cipher->key[0], GCRY_CIPHER_BLOWFISH,
|
||||
GCRY_CIPHER_MODE_CBC, 0)) {
|
||||
SAFE_FREE(cipher->key);
|
||||
return -1;
|
||||
}
|
||||
if (gcry_cipher_setkey(cipher->key[0], key, 16)) {
|
||||
SAFE_FREE(cipher->key);
|
||||
return -1;
|
||||
}
|
||||
if (gcry_cipher_setiv(cipher->key[0], IV, 8)) {
|
||||
SAFE_FREE(cipher->key);
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void blowfish_encrypt(struct crypto_struct *cipher, void *in,
|
||||
void *out, unsigned long len) {
|
||||
gcry_cipher_encrypt(cipher->key[0], out, len, in, len);
|
||||
}
|
||||
|
||||
static void blowfish_decrypt(struct crypto_struct *cipher, void *in,
|
||||
void *out, unsigned long len) {
|
||||
gcry_cipher_decrypt(cipher->key[0], out, len, in, len);
|
||||
}
|
||||
|
||||
static int aes_set_key(struct crypto_struct *cipher, void *key, void *IV) {
|
||||
int mode=GCRY_CIPHER_MODE_CBC;
|
||||
if (cipher->key == NULL) {
|
||||
if (alloc_key(cipher) < 0) {
|
||||
return -1;
|
||||
}
|
||||
if(strstr(cipher->name,"-ctr"))
|
||||
mode=GCRY_CIPHER_MODE_CTR;
|
||||
switch (cipher->keysize) {
|
||||
case 128:
|
||||
if (gcry_cipher_open(&cipher->key[0], GCRY_CIPHER_AES128,
|
||||
mode, 0)) {
|
||||
SAFE_FREE(cipher->key);
|
||||
return -1;
|
||||
}
|
||||
break;
|
||||
case 192:
|
||||
if (gcry_cipher_open(&cipher->key[0], GCRY_CIPHER_AES192,
|
||||
mode, 0)) {
|
||||
SAFE_FREE(cipher->key);
|
||||
return -1;
|
||||
}
|
||||
break;
|
||||
case 256:
|
||||
if (gcry_cipher_open(&cipher->key[0], GCRY_CIPHER_AES256,
|
||||
mode, 0)) {
|
||||
SAFE_FREE(cipher->key);
|
||||
return -1;
|
||||
}
|
||||
break;
|
||||
}
|
||||
if (gcry_cipher_setkey(cipher->key[0], key, cipher->keysize / 8)) {
|
||||
SAFE_FREE(cipher->key);
|
||||
return -1;
|
||||
}
|
||||
if(mode == GCRY_CIPHER_MODE_CBC){
|
||||
if (gcry_cipher_setiv(cipher->key[0], IV, 16)) {
|
||||
|
||||
SAFE_FREE(cipher->key);
|
||||
return -1;
|
||||
}
|
||||
} else {
|
||||
if(gcry_cipher_setctr(cipher->key[0],IV,16)){
|
||||
SAFE_FREE(cipher->key);
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void aes_encrypt(struct crypto_struct *cipher, void *in, void *out,
|
||||
unsigned long len) {
|
||||
gcry_cipher_encrypt(cipher->key[0], out, len, in, len);
|
||||
}
|
||||
|
||||
static void aes_decrypt(struct crypto_struct *cipher, void *in, void *out,
|
||||
unsigned long len) {
|
||||
gcry_cipher_decrypt(cipher->key[0], out, len, in, len);
|
||||
}
|
||||
|
||||
static int des3_set_key(struct crypto_struct *cipher, void *key, void *IV) {
|
||||
if (cipher->key == NULL) {
|
||||
if (alloc_key(cipher) < 0) {
|
||||
return -1;
|
||||
}
|
||||
if (gcry_cipher_open(&cipher->key[0], GCRY_CIPHER_3DES,
|
||||
GCRY_CIPHER_MODE_CBC, 0)) {
|
||||
SAFE_FREE(cipher->key);
|
||||
return -1;
|
||||
}
|
||||
if (gcry_cipher_setkey(cipher->key[0], key, 24)) {
|
||||
SAFE_FREE(cipher->key);
|
||||
return -1;
|
||||
}
|
||||
if (gcry_cipher_setiv(cipher->key[0], IV, 8)) {
|
||||
SAFE_FREE(cipher->key);
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void des3_encrypt(struct crypto_struct *cipher, void *in,
|
||||
void *out, unsigned long len) {
|
||||
gcry_cipher_encrypt(cipher->key[0], out, len, in, len);
|
||||
}
|
||||
|
||||
static void des3_decrypt(struct crypto_struct *cipher, void *in,
|
||||
void *out, unsigned long len) {
|
||||
gcry_cipher_decrypt(cipher->key[0], out, len, in, len);
|
||||
}
|
||||
|
||||
static int des3_1_set_key(struct crypto_struct *cipher, void *key, void *IV) {
|
||||
if (cipher->key == NULL) {
|
||||
if (alloc_key(cipher) < 0) {
|
||||
return -1;
|
||||
}
|
||||
if (gcry_cipher_open(&cipher->key[0], GCRY_CIPHER_DES,
|
||||
GCRY_CIPHER_MODE_CBC, 0)) {
|
||||
SAFE_FREE(cipher->key);
|
||||
return -1;
|
||||
}
|
||||
if (gcry_cipher_setkey(cipher->key[0], key, 8)) {
|
||||
SAFE_FREE(cipher->key);
|
||||
return -1;
|
||||
}
|
||||
if (gcry_cipher_setiv(cipher->key[0], IV, 8)) {
|
||||
SAFE_FREE(cipher->key);
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (gcry_cipher_open(&cipher->key[1], GCRY_CIPHER_DES,
|
||||
GCRY_CIPHER_MODE_CBC, 0)) {
|
||||
SAFE_FREE(cipher->key);
|
||||
return -1;
|
||||
}
|
||||
if (gcry_cipher_setkey(cipher->key[1], (unsigned char *)key + 8, 8)) {
|
||||
SAFE_FREE(cipher->key);
|
||||
return -1;
|
||||
}
|
||||
if (gcry_cipher_setiv(cipher->key[1], (unsigned char *)IV + 8, 8)) {
|
||||
SAFE_FREE(cipher->key);
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (gcry_cipher_open(&cipher->key[2], GCRY_CIPHER_DES,
|
||||
GCRY_CIPHER_MODE_CBC, 0)) {
|
||||
SAFE_FREE(cipher->key);
|
||||
return -1;
|
||||
}
|
||||
if (gcry_cipher_setkey(cipher->key[2], (unsigned char *)key + 16, 8)) {
|
||||
SAFE_FREE(cipher->key);
|
||||
return -1;
|
||||
}
|
||||
if (gcry_cipher_setiv(cipher->key[2], (unsigned char *)IV + 16, 8)) {
|
||||
SAFE_FREE(cipher->key);
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void des3_1_encrypt(struct crypto_struct *cipher, void *in,
|
||||
void *out, unsigned long len) {
|
||||
gcry_cipher_encrypt(cipher->key[0], out, len, in, len);
|
||||
gcry_cipher_decrypt(cipher->key[1], in, len, out, len);
|
||||
gcry_cipher_encrypt(cipher->key[2], out, len, in, len);
|
||||
}
|
||||
|
||||
static void des3_1_decrypt(struct crypto_struct *cipher, void *in,
|
||||
void *out, unsigned long len) {
|
||||
gcry_cipher_decrypt(cipher->key[2], out, len, in, len);
|
||||
gcry_cipher_encrypt(cipher->key[1], in, len, out, len);
|
||||
gcry_cipher_decrypt(cipher->key[0], out, len, in, len);
|
||||
}
|
||||
|
||||
/* the table of supported ciphers */
|
||||
static struct crypto_struct ssh_ciphertab[] = {
|
||||
{
|
||||
.name = "blowfish-cbc",
|
||||
.blocksize = 8,
|
||||
.keylen = sizeof(gcry_cipher_hd_t),
|
||||
.key = NULL,
|
||||
.keysize = 128,
|
||||
.set_encrypt_key = blowfish_set_key,
|
||||
.set_decrypt_key = blowfish_set_key,
|
||||
.cbc_encrypt = blowfish_encrypt,
|
||||
.cbc_decrypt = blowfish_decrypt
|
||||
},
|
||||
{
|
||||
.name = "aes128-ctr",
|
||||
.blocksize = 16,
|
||||
.keylen = sizeof(gcry_cipher_hd_t),
|
||||
.key = NULL,
|
||||
.keysize = 128,
|
||||
.set_encrypt_key = aes_set_key,
|
||||
.set_decrypt_key = aes_set_key,
|
||||
.cbc_encrypt = aes_encrypt,
|
||||
.cbc_decrypt = aes_encrypt
|
||||
},
|
||||
{
|
||||
.name = "aes192-ctr",
|
||||
.blocksize = 16,
|
||||
.keylen = sizeof(gcry_cipher_hd_t),
|
||||
.key = NULL,
|
||||
.keysize = 192,
|
||||
.set_encrypt_key = aes_set_key,
|
||||
.set_decrypt_key = aes_set_key,
|
||||
.cbc_encrypt = aes_encrypt,
|
||||
.cbc_decrypt = aes_encrypt
|
||||
},
|
||||
{
|
||||
.name = "aes256-ctr",
|
||||
.blocksize = 16,
|
||||
.keylen = sizeof(gcry_cipher_hd_t),
|
||||
.key = NULL,
|
||||
.keysize = 256,
|
||||
.set_encrypt_key = aes_set_key,
|
||||
.set_decrypt_key = aes_set_key,
|
||||
.cbc_encrypt = aes_encrypt,
|
||||
.cbc_decrypt = aes_encrypt
|
||||
},
|
||||
{
|
||||
.name = "aes128-cbc",
|
||||
.blocksize = 16,
|
||||
.keylen = sizeof(gcry_cipher_hd_t),
|
||||
.key = NULL,
|
||||
.keysize = 128,
|
||||
.set_encrypt_key = aes_set_key,
|
||||
.set_decrypt_key = aes_set_key,
|
||||
.cbc_encrypt = aes_encrypt,
|
||||
.cbc_decrypt = aes_decrypt
|
||||
},
|
||||
{
|
||||
.name = "aes192-cbc",
|
||||
.blocksize = 16,
|
||||
.keylen = sizeof(gcry_cipher_hd_t),
|
||||
.key = NULL,
|
||||
.keysize = 192,
|
||||
.set_encrypt_key = aes_set_key,
|
||||
.set_decrypt_key = aes_set_key,
|
||||
.cbc_encrypt = aes_encrypt,
|
||||
.cbc_decrypt = aes_decrypt
|
||||
},
|
||||
{
|
||||
.name = "aes256-cbc",
|
||||
.blocksize = 16,
|
||||
.keylen = sizeof(gcry_cipher_hd_t),
|
||||
.key = NULL,
|
||||
.keysize = 256,
|
||||
.set_encrypt_key = aes_set_key,
|
||||
.set_decrypt_key = aes_set_key,
|
||||
.cbc_encrypt = aes_encrypt,
|
||||
.cbc_decrypt = aes_decrypt
|
||||
},
|
||||
{
|
||||
.name = "3des-cbc",
|
||||
.blocksize = 8,
|
||||
.keylen = sizeof(gcry_cipher_hd_t),
|
||||
.key = NULL,
|
||||
.keysize = 192,
|
||||
.set_encrypt_key = des3_set_key,
|
||||
.set_decrypt_key = des3_set_key,
|
||||
.cbc_encrypt = des3_encrypt,
|
||||
.cbc_decrypt = des3_decrypt
|
||||
},
|
||||
{
|
||||
.name = "3des-cbc-ssh1",
|
||||
.blocksize = 8,
|
||||
.keylen = sizeof(gcry_cipher_hd_t) * 3,
|
||||
.key = NULL,
|
||||
.keysize = 192,
|
||||
.set_encrypt_key = des3_1_set_key,
|
||||
.set_decrypt_key = des3_1_set_key,
|
||||
.cbc_encrypt = des3_1_encrypt,
|
||||
.cbc_decrypt = des3_1_decrypt
|
||||
},
|
||||
{
|
||||
.name = NULL,
|
||||
.blocksize = 0,
|
||||
.keylen = 0,
|
||||
.key = NULL,
|
||||
.keysize = 0,
|
||||
.set_encrypt_key = NULL,
|
||||
.set_decrypt_key = NULL,
|
||||
.cbc_encrypt = NULL,
|
||||
.cbc_decrypt = NULL
|
||||
}
|
||||
};
|
||||
|
||||
struct crypto_struct *ssh_get_ciphertab(){
|
||||
return ssh_ciphertab;
|
||||
}
|
||||
#endif
|
||||
802
libssh/wrapper.c
802
libssh/wrapper.c
@ -32,6 +32,8 @@
|
||||
*/
|
||||
|
||||
#include "config.h"
|
||||
|
||||
|
||||
#include <stdlib.h>
|
||||
#include <stdio.h>
|
||||
#include <string.h>
|
||||
@ -41,800 +43,6 @@
|
||||
#include "libssh/crypto.h"
|
||||
#include "libssh/wrapper.h"
|
||||
|
||||
#ifdef HAVE_LIBGCRYPT
|
||||
#include <gcrypt.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 ctx = NULL;
|
||||
gcry_md_open(&ctx, GCRY_MD_SHA1, 0);
|
||||
|
||||
return ctx;
|
||||
}
|
||||
|
||||
void sha1_update(SHACTX c, const void *data, unsigned long len) {
|
||||
gcry_md_write(c, data, len);
|
||||
}
|
||||
|
||||
void sha1_final(unsigned char *md, SHACTX c) {
|
||||
gcry_md_final(c);
|
||||
memcpy(md, gcry_md_read(c, 0), SHA_DIGEST_LEN);
|
||||
gcry_md_close(c);
|
||||
}
|
||||
|
||||
void sha1(unsigned char *digest, int len, unsigned char *hash) {
|
||||
gcry_md_hash_buffer(GCRY_MD_SHA1, hash, digest, len);
|
||||
}
|
||||
|
||||
MD5CTX md5_init(void) {
|
||||
MD5CTX c = NULL;
|
||||
gcry_md_open(&c, GCRY_MD_MD5, 0);
|
||||
|
||||
return c;
|
||||
}
|
||||
|
||||
void md5_update(MD5CTX c, const void *data, unsigned long len) {
|
||||
gcry_md_write(c,data,len);
|
||||
}
|
||||
|
||||
void md5_final(unsigned char *md, MD5CTX c) {
|
||||
gcry_md_final(c);
|
||||
memcpy(md, gcry_md_read(c, 0), MD5_DIGEST_LEN);
|
||||
gcry_md_close(c);
|
||||
}
|
||||
|
||||
HMACCTX hmac_init(const void *key, int len, int type) {
|
||||
HMACCTX c = NULL;
|
||||
|
||||
switch(type) {
|
||||
case HMAC_SHA1:
|
||||
gcry_md_open(&c, GCRY_MD_SHA1, GCRY_MD_FLAG_HMAC);
|
||||
break;
|
||||
case HMAC_MD5:
|
||||
gcry_md_open(&c, GCRY_MD_MD5, GCRY_MD_FLAG_HMAC);
|
||||
break;
|
||||
default:
|
||||
c = NULL;
|
||||
}
|
||||
|
||||
gcry_md_setkey(c, key, len);
|
||||
|
||||
return c;
|
||||
}
|
||||
|
||||
void hmac_update(HMACCTX c, const void *data, unsigned long len) {
|
||||
gcry_md_write(c, data, len);
|
||||
}
|
||||
|
||||
void hmac_final(HMACCTX c, unsigned char *hashmacbuf, unsigned int *len) {
|
||||
*len = gcry_md_get_algo_dlen(gcry_md_get_algo(c));
|
||||
memcpy(hashmacbuf, gcry_md_read(c, 0), *len);
|
||||
gcry_md_close(c);
|
||||
}
|
||||
|
||||
/* the wrapper functions for blowfish */
|
||||
static int blowfish_set_key(struct crypto_struct *cipher, void *key, void *IV){
|
||||
if (cipher->key == NULL) {
|
||||
if (alloc_key(cipher) < 0) {
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (gcry_cipher_open(&cipher->key[0], GCRY_CIPHER_BLOWFISH,
|
||||
GCRY_CIPHER_MODE_CBC, 0)) {
|
||||
SAFE_FREE(cipher->key);
|
||||
return -1;
|
||||
}
|
||||
if (gcry_cipher_setkey(cipher->key[0], key, 16)) {
|
||||
SAFE_FREE(cipher->key);
|
||||
return -1;
|
||||
}
|
||||
if (gcry_cipher_setiv(cipher->key[0], IV, 8)) {
|
||||
SAFE_FREE(cipher->key);
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void blowfish_encrypt(struct crypto_struct *cipher, void *in,
|
||||
void *out, unsigned long len) {
|
||||
gcry_cipher_encrypt(cipher->key[0], out, len, in, len);
|
||||
}
|
||||
|
||||
static void blowfish_decrypt(struct crypto_struct *cipher, void *in,
|
||||
void *out, unsigned long len) {
|
||||
gcry_cipher_decrypt(cipher->key[0], out, len, in, len);
|
||||
}
|
||||
|
||||
static int aes_set_key(struct crypto_struct *cipher, void *key, void *IV) {
|
||||
int mode=GCRY_CIPHER_MODE_CBC;
|
||||
if (cipher->key == NULL) {
|
||||
if (alloc_key(cipher) < 0) {
|
||||
return -1;
|
||||
}
|
||||
if(strstr(cipher->name,"-ctr"))
|
||||
mode=GCRY_CIPHER_MODE_CTR;
|
||||
switch (cipher->keysize) {
|
||||
case 128:
|
||||
if (gcry_cipher_open(&cipher->key[0], GCRY_CIPHER_AES128,
|
||||
mode, 0)) {
|
||||
SAFE_FREE(cipher->key);
|
||||
return -1;
|
||||
}
|
||||
break;
|
||||
case 192:
|
||||
if (gcry_cipher_open(&cipher->key[0], GCRY_CIPHER_AES192,
|
||||
mode, 0)) {
|
||||
SAFE_FREE(cipher->key);
|
||||
return -1;
|
||||
}
|
||||
break;
|
||||
case 256:
|
||||
if (gcry_cipher_open(&cipher->key[0], GCRY_CIPHER_AES256,
|
||||
mode, 0)) {
|
||||
SAFE_FREE(cipher->key);
|
||||
return -1;
|
||||
}
|
||||
break;
|
||||
}
|
||||
if (gcry_cipher_setkey(cipher->key[0], key, cipher->keysize / 8)) {
|
||||
SAFE_FREE(cipher->key);
|
||||
return -1;
|
||||
}
|
||||
if(mode == GCRY_CIPHER_MODE_CBC){
|
||||
if (gcry_cipher_setiv(cipher->key[0], IV, 16)) {
|
||||
|
||||
SAFE_FREE(cipher->key);
|
||||
return -1;
|
||||
}
|
||||
} else {
|
||||
if(gcry_cipher_setctr(cipher->key[0],IV,16)){
|
||||
SAFE_FREE(cipher->key);
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void aes_encrypt(struct crypto_struct *cipher, void *in, void *out,
|
||||
unsigned long len) {
|
||||
gcry_cipher_encrypt(cipher->key[0], out, len, in, len);
|
||||
}
|
||||
|
||||
static void aes_decrypt(struct crypto_struct *cipher, void *in, void *out,
|
||||
unsigned long len) {
|
||||
gcry_cipher_decrypt(cipher->key[0], out, len, in, len);
|
||||
}
|
||||
|
||||
static int des3_set_key(struct crypto_struct *cipher, void *key, void *IV) {
|
||||
if (cipher->key == NULL) {
|
||||
if (alloc_key(cipher) < 0) {
|
||||
return -1;
|
||||
}
|
||||
if (gcry_cipher_open(&cipher->key[0], GCRY_CIPHER_3DES,
|
||||
GCRY_CIPHER_MODE_CBC, 0)) {
|
||||
SAFE_FREE(cipher->key);
|
||||
return -1;
|
||||
}
|
||||
if (gcry_cipher_setkey(cipher->key[0], key, 24)) {
|
||||
SAFE_FREE(cipher->key);
|
||||
return -1;
|
||||
}
|
||||
if (gcry_cipher_setiv(cipher->key[0], IV, 8)) {
|
||||
SAFE_FREE(cipher->key);
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void des3_encrypt(struct crypto_struct *cipher, void *in,
|
||||
void *out, unsigned long len) {
|
||||
gcry_cipher_encrypt(cipher->key[0], out, len, in, len);
|
||||
}
|
||||
|
||||
static void des3_decrypt(struct crypto_struct *cipher, void *in,
|
||||
void *out, unsigned long len) {
|
||||
gcry_cipher_decrypt(cipher->key[0], out, len, in, len);
|
||||
}
|
||||
|
||||
static int des3_1_set_key(struct crypto_struct *cipher, void *key, void *IV) {
|
||||
if (cipher->key == NULL) {
|
||||
if (alloc_key(cipher) < 0) {
|
||||
return -1;
|
||||
}
|
||||
if (gcry_cipher_open(&cipher->key[0], GCRY_CIPHER_DES,
|
||||
GCRY_CIPHER_MODE_CBC, 0)) {
|
||||
SAFE_FREE(cipher->key);
|
||||
return -1;
|
||||
}
|
||||
if (gcry_cipher_setkey(cipher->key[0], key, 8)) {
|
||||
SAFE_FREE(cipher->key);
|
||||
return -1;
|
||||
}
|
||||
if (gcry_cipher_setiv(cipher->key[0], IV, 8)) {
|
||||
SAFE_FREE(cipher->key);
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (gcry_cipher_open(&cipher->key[1], GCRY_CIPHER_DES,
|
||||
GCRY_CIPHER_MODE_CBC, 0)) {
|
||||
SAFE_FREE(cipher->key);
|
||||
return -1;
|
||||
}
|
||||
if (gcry_cipher_setkey(cipher->key[1], (unsigned char *)key + 8, 8)) {
|
||||
SAFE_FREE(cipher->key);
|
||||
return -1;
|
||||
}
|
||||
if (gcry_cipher_setiv(cipher->key[1], (unsigned char *)IV + 8, 8)) {
|
||||
SAFE_FREE(cipher->key);
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (gcry_cipher_open(&cipher->key[2], GCRY_CIPHER_DES,
|
||||
GCRY_CIPHER_MODE_CBC, 0)) {
|
||||
SAFE_FREE(cipher->key);
|
||||
return -1;
|
||||
}
|
||||
if (gcry_cipher_setkey(cipher->key[2], (unsigned char *)key + 16, 8)) {
|
||||
SAFE_FREE(cipher->key);
|
||||
return -1;
|
||||
}
|
||||
if (gcry_cipher_setiv(cipher->key[2], (unsigned char *)IV + 16, 8)) {
|
||||
SAFE_FREE(cipher->key);
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void des3_1_encrypt(struct crypto_struct *cipher, void *in,
|
||||
void *out, unsigned long len) {
|
||||
gcry_cipher_encrypt(cipher->key[0], out, len, in, len);
|
||||
gcry_cipher_decrypt(cipher->key[1], in, len, out, len);
|
||||
gcry_cipher_encrypt(cipher->key[2], out, len, in, len);
|
||||
}
|
||||
|
||||
static void des3_1_decrypt(struct crypto_struct *cipher, void *in,
|
||||
void *out, unsigned long len) {
|
||||
gcry_cipher_decrypt(cipher->key[2], out, len, in, len);
|
||||
gcry_cipher_encrypt(cipher->key[1], in, len, out, len);
|
||||
gcry_cipher_decrypt(cipher->key[0], out, len, in, len);
|
||||
}
|
||||
|
||||
/* the table of supported ciphers */
|
||||
static struct crypto_struct ssh_ciphertab[] = {
|
||||
{
|
||||
.name = "blowfish-cbc",
|
||||
.blocksize = 8,
|
||||
.keylen = sizeof(gcry_cipher_hd_t),
|
||||
.key = NULL,
|
||||
.keysize = 128,
|
||||
.set_encrypt_key = blowfish_set_key,
|
||||
.set_decrypt_key = blowfish_set_key,
|
||||
.cbc_encrypt = blowfish_encrypt,
|
||||
.cbc_decrypt = blowfish_decrypt
|
||||
},
|
||||
{
|
||||
.name = "aes128-ctr",
|
||||
.blocksize = 16,
|
||||
.keylen = sizeof(gcry_cipher_hd_t),
|
||||
.key = NULL,
|
||||
.keysize = 128,
|
||||
.set_encrypt_key = aes_set_key,
|
||||
.set_decrypt_key = aes_set_key,
|
||||
.cbc_encrypt = aes_encrypt,
|
||||
.cbc_decrypt = aes_encrypt
|
||||
},
|
||||
{
|
||||
.name = "aes192-ctr",
|
||||
.blocksize = 16,
|
||||
.keylen = sizeof(gcry_cipher_hd_t),
|
||||
.key = NULL,
|
||||
.keysize = 192,
|
||||
.set_encrypt_key = aes_set_key,
|
||||
.set_decrypt_key = aes_set_key,
|
||||
.cbc_encrypt = aes_encrypt,
|
||||
.cbc_decrypt = aes_encrypt
|
||||
},
|
||||
{
|
||||
.name = "aes256-ctr",
|
||||
.blocksize = 16,
|
||||
.keylen = sizeof(gcry_cipher_hd_t),
|
||||
.key = NULL,
|
||||
.keysize = 256,
|
||||
.set_encrypt_key = aes_set_key,
|
||||
.set_decrypt_key = aes_set_key,
|
||||
.cbc_encrypt = aes_encrypt,
|
||||
.cbc_decrypt = aes_encrypt
|
||||
},
|
||||
{
|
||||
.name = "aes128-cbc",
|
||||
.blocksize = 16,
|
||||
.keylen = sizeof(gcry_cipher_hd_t),
|
||||
.key = NULL,
|
||||
.keysize = 128,
|
||||
.set_encrypt_key = aes_set_key,
|
||||
.set_decrypt_key = aes_set_key,
|
||||
.cbc_encrypt = aes_encrypt,
|
||||
.cbc_decrypt = aes_decrypt
|
||||
},
|
||||
{
|
||||
.name = "aes192-cbc",
|
||||
.blocksize = 16,
|
||||
.keylen = sizeof(gcry_cipher_hd_t),
|
||||
.key = NULL,
|
||||
.keysize = 192,
|
||||
.set_encrypt_key = aes_set_key,
|
||||
.set_decrypt_key = aes_set_key,
|
||||
.cbc_encrypt = aes_encrypt,
|
||||
.cbc_decrypt = aes_decrypt
|
||||
},
|
||||
{
|
||||
.name = "aes256-cbc",
|
||||
.blocksize = 16,
|
||||
.keylen = sizeof(gcry_cipher_hd_t),
|
||||
.key = NULL,
|
||||
.keysize = 256,
|
||||
.set_encrypt_key = aes_set_key,
|
||||
.set_decrypt_key = aes_set_key,
|
||||
.cbc_encrypt = aes_encrypt,
|
||||
.cbc_decrypt = aes_decrypt
|
||||
},
|
||||
{
|
||||
.name = "3des-cbc",
|
||||
.blocksize = 8,
|
||||
.keylen = sizeof(gcry_cipher_hd_t),
|
||||
.key = NULL,
|
||||
.keysize = 192,
|
||||
.set_encrypt_key = des3_set_key,
|
||||
.set_decrypt_key = des3_set_key,
|
||||
.cbc_encrypt = des3_encrypt,
|
||||
.cbc_decrypt = des3_decrypt
|
||||
},
|
||||
{
|
||||
.name = "3des-cbc-ssh1",
|
||||
.blocksize = 8,
|
||||
.keylen = sizeof(gcry_cipher_hd_t) * 3,
|
||||
.key = NULL,
|
||||
.keysize = 192,
|
||||
.set_encrypt_key = des3_1_set_key,
|
||||
.set_decrypt_key = des3_1_set_key,
|
||||
.cbc_encrypt = des3_1_encrypt,
|
||||
.cbc_decrypt = des3_1_decrypt
|
||||
},
|
||||
{
|
||||
.name = NULL,
|
||||
.blocksize = 0,
|
||||
.keylen = 0,
|
||||
.key = NULL,
|
||||
.keysize = 0,
|
||||
.set_encrypt_key = NULL,
|
||||
.set_decrypt_key = NULL,
|
||||
.cbc_encrypt = NULL,
|
||||
.cbc_decrypt = NULL
|
||||
}
|
||||
};
|
||||
|
||||
#elif defined 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
|
||||
}
|
||||
};
|
||||
#endif /* OPENSSL_CRYPTO */
|
||||
|
||||
/* it allocates a new cipher structure based on its offset into the global table */
|
||||
static struct crypto_struct *cipher_new(int offset) {
|
||||
struct crypto_struct *cipher = NULL;
|
||||
@ -845,7 +53,7 @@ static struct crypto_struct *cipher_new(int offset) {
|
||||
}
|
||||
|
||||
/* note the memcpy will copy the pointers : so, you shouldn't free them */
|
||||
memcpy(cipher, &ssh_ciphertab[offset], sizeof(*cipher));
|
||||
memcpy(cipher, &ssh_get_ciphertab()[offset], sizeof(*cipher));
|
||||
|
||||
return cipher;
|
||||
}
|
||||
@ -909,7 +117,7 @@ void crypto_free(struct ssh_crypto_struct *crypto){
|
||||
static int crypt_set_algorithms2(ssh_session session){
|
||||
const char *wanted;
|
||||
int i = 0;
|
||||
|
||||
struct crypto_struct *ssh_ciphertab=ssh_get_ciphertab();
|
||||
/* we must scan the kex entries to find crypto algorithms and set their appropriate structure */
|
||||
/* out */
|
||||
wanted = session->client_kex.methods[SSH_CRYPT_C_S];
|
||||
@ -965,6 +173,7 @@ static int crypt_set_algorithms2(ssh_session session){
|
||||
|
||||
static int crypt_set_algorithms1(ssh_session session) {
|
||||
int i = 0;
|
||||
struct crypto_struct *ssh_ciphertab=ssh_get_ciphertab();
|
||||
|
||||
/* right now, we force 3des-cbc to be taken */
|
||||
while (ssh_ciphertab[i].name && strcmp(ssh_ciphertab[i].name,
|
||||
@ -1003,6 +212,7 @@ int crypt_set_algorithms_server(ssh_session session){
|
||||
char *client = NULL;
|
||||
char *match = NULL;
|
||||
int i = 0;
|
||||
struct crypto_struct *ssh_ciphertab=ssh_get_ciphertab();
|
||||
|
||||
/* we must scan the kex entries to find crypto algorithms and set their appropriate structure */
|
||||
enter_function();
|
||||
|
||||
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