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3744. [experimental] SIT: send and process Source Identity Tokens

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(which are similar to DNS Cookies by Donald Eastlake)
                        and are designed to help clients detect off path
                        spoofed responses and for servers to detect legitimate
                        clients.

                        SIT use a experimental EDNS option code (65001).

                        SIT can be enabled via --enable-developer or
                        --enable-sit.  It is on by default in Windows.

                        RRL processing as been updated to know about SIT with
                        legitimate clients not being rate limited. [RT #35389]
This commit is contained in:
Mark Andrews
2014-02-19 12:53:42 +11:00
parent 43c1433ef2
commit b5f6271f4d
49 changed files with 1910 additions and 109 deletions
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118
lib/isc/aes.c Normal file
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/*
* Copyright (C) 2013 Internet Systems Consortium, Inc. ("ISC")
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
* OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
/* $Id$ */
/*! \file isc/aes.c */
#include "config.h"
#include <isc/assertions.h>
#include <isc/aes.h>
#include <isc/platform.h>
#include <isc/string.h>
#include <isc/types.h>
#include <isc/util.h>
#ifdef ISC_PLATFORM_OPENSSLAES
#ifndef EVP_AES
#include <openssl/aes.h>
void
isc_aes128_crypt(const unsigned char *key, const unsigned char *in,
unsigned char *out)
{
AES_KEY k;
RUNTIME_CHECK(AES_set_encrypt_key(key, 128, &k) == 0);
AES_encrypt(in, out, &k);
}
void
isc_aes192_crypt(const unsigned char *key, const unsigned char *in,
unsigned char *out)
{
AES_KEY k;
RUNTIME_CHECK(AES_set_encrypt_key(key, 192, &k) == 0);
AES_encrypt(in, out, &k);
}
void
isc_aes256_crypt(const unsigned char *key, const unsigned char *in,
unsigned char *out)
{
AES_KEY k;
RUNTIME_CHECK(AES_set_encrypt_key(key, 256, &k) == 0);
AES_encrypt(in, out, &k);
}
#else
#include <openssl/evp.h>
void
isc_aes128_crypt(const unsigned char *key, const unsigned char *in,
unsigned char *out)
{
EVP_CIPHER_CTX c;
int len;
EVP_CIPHER_CTX_init(&c);
RUNTIME_CHECK(EVP_EncryptInit(&c, EVP_aes_128_ecb(), key, NULL) == 1);
EVP_CIPHER_CTX_set_padding(&c, 0);
RUNTIME_CHECK(EVP_EncryptUpdate(&c, out, &len, in,
ISC_AES_BLOCK_LENGTH) == 1);
RUNTIME_CHECK(len == ISC_AES_BLOCK_LENGTH);
RUNTIME_CHECK(EVP_CIPHER_CTX_cleanup(&c) == 1);
}
void
isc_aes192_crypt(const unsigned char *key, const unsigned char *in,
unsigned char *out)
{
EVP_CIPHER_CTX c;
int len;
EVP_CIPHER_CTX_init(&c);
RUNTIME_CHECK(EVP_EncryptInit(&c, EVP_aes_192_ecb(), key, NULL) == 1);
EVP_CIPHER_CTX_set_padding(&c, 0);
RUNTIME_CHECK(EVP_EncryptUpdate(&c, out, &len, in,
ISC_AES_BLOCK_LENGTH) == 1);
RUNTIME_CHECK(len == ISC_AES_BLOCK_LENGTH);
RUNTIME_CHECK(EVP_CIPHER_CTX_cleanup(&c) == 1);
}
void
isc_aes256_crypt(const unsigned char *key, const unsigned char *in,
unsigned char *out)
{
EVP_CIPHER_CTX c;
int len;
EVP_CIPHER_CTX_init(&c);
RUNTIME_CHECK(EVP_EncryptInit(&c, EVP_aes_256_ecb(), key, NULL) == 1);
EVP_CIPHER_CTX_set_padding(&c, 0);
RUNTIME_CHECK(EVP_EncryptUpdate(&c, out, &len, in,
ISC_AES_BLOCK_LENGTH) == 1);
RUNTIME_CHECK(len == ISC_AES_BLOCK_LENGTH);
RUNTIME_CHECK(EVP_CIPHER_CTX_cleanup(&c) == 1);
}
#endif
#endif