mirror of
https://git.proxmox.com/git/efi-boot-shim
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1d39ada8cb
OpenSSL changes quite a bit of the key validation, and most of the keys I can find in the wild aren't marked as trusted by the new checker. Intel noticed this too: https://github.com/vathpela/edk2/commit/f536d7c3ed but instead of fixing the compatibility error, they switched their test data to match the bug. So that's pretty broken. For now, I'm reverting OpenSSL 1.1.0e, because we need those certs in the wild to work. This reverts commit513cbe2aea. This reverts commite9cc33d6f2. This reverts commit80d49f758e. This reverts commit9bc647e2b2. This reverts commitae75df6232. This reverts commite883479f35. This reverts commit97469449fd. This reverts commite39692647f. This reverts commit0f3dfc01e2. This reverts commit4da6ac8195. This reverts commitd064bd7eef. This reverts commit9bc86cfd6f. This reverts commitab9a05a10f. Signed-off-by: Peter Jones <pjones@redhat.com>
313 lines
10 KiB
C
313 lines
10 KiB
C
/* ====================================================================
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* Copyright (c) 2011 The OpenSSL Project. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. All advertising materials mentioning features or use of this
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* software must display the following acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
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*
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* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
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* endorse or promote products derived from this software without
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* prior written permission. For written permission, please contact
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* licensing@OpenSSL.org.
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*
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* 5. Products derived from this software may not be called "OpenSSL"
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* nor may "OpenSSL" appear in their names without prior written
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* permission of the OpenSSL Project.
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*
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* 6. Redistributions of any form whatsoever must retain the following
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* acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
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*
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* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
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* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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* ====================================================================
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*/
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#include <openssl/opensslconf.h>
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#include <stdio.h>
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#include <string.h>
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#if !defined(OPENSSL_NO_RC4) && !defined(OPENSSL_NO_MD5)
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# include <openssl/crypto.h>
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# include <openssl/evp.h>
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# include <openssl/objects.h>
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# include <openssl/rc4.h>
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# include <openssl/md5.h>
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# ifndef EVP_CIPH_FLAG_AEAD_CIPHER
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# define EVP_CIPH_FLAG_AEAD_CIPHER 0x200000
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# define EVP_CTRL_AEAD_TLS1_AAD 0x16
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# define EVP_CTRL_AEAD_SET_MAC_KEY 0x17
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# endif
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/* FIXME: surely this is available elsewhere? */
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# define EVP_RC4_KEY_SIZE 16
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typedef struct {
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RC4_KEY ks;
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MD5_CTX head, tail, md;
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size_t payload_length;
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} EVP_RC4_HMAC_MD5;
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# define NO_PAYLOAD_LENGTH ((size_t)-1)
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void rc4_md5_enc(RC4_KEY *key, const void *in0, void *out,
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MD5_CTX *ctx, const void *inp, size_t blocks);
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# define data(ctx) ((EVP_RC4_HMAC_MD5 *)(ctx)->cipher_data)
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static int rc4_hmac_md5_init_key(EVP_CIPHER_CTX *ctx,
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const unsigned char *inkey,
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const unsigned char *iv, int enc)
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{
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EVP_RC4_HMAC_MD5 *key = data(ctx);
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RC4_set_key(&key->ks, EVP_CIPHER_CTX_key_length(ctx), inkey);
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MD5_Init(&key->head); /* handy when benchmarking */
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key->tail = key->head;
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key->md = key->head;
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key->payload_length = NO_PAYLOAD_LENGTH;
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return 1;
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}
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# if defined(RC4_ASM) && defined(MD5_ASM) && ( \
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defined(__x86_64) || defined(__x86_64__) || \
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defined(_M_AMD64) || defined(_M_X64) || \
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defined(__INTEL__) ) && \
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!(defined(__APPLE__) && defined(__MACH__))
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# define STITCHED_CALL
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# endif
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# if !defined(STITCHED_CALL)
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# define rc4_off 0
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# define md5_off 0
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# endif
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static int rc4_hmac_md5_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
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const unsigned char *in, size_t len)
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{
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EVP_RC4_HMAC_MD5 *key = data(ctx);
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# if defined(STITCHED_CALL)
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size_t rc4_off = 32 - 1 - (key->ks.x & (32 - 1)), /* 32 is $MOD from
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* rc4_md5-x86_64.pl */
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md5_off = MD5_CBLOCK - key->md.num, blocks;
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unsigned int l;
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extern unsigned int OPENSSL_ia32cap_P[];
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# endif
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size_t plen = key->payload_length;
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if (plen != NO_PAYLOAD_LENGTH && len != (plen + MD5_DIGEST_LENGTH))
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return 0;
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if (ctx->encrypt) {
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if (plen == NO_PAYLOAD_LENGTH)
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plen = len;
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# if defined(STITCHED_CALL)
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/* cipher has to "fall behind" */
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if (rc4_off > md5_off)
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md5_off += MD5_CBLOCK;
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if (plen > md5_off && (blocks = (plen - md5_off) / MD5_CBLOCK) &&
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(OPENSSL_ia32cap_P[0] & (1 << 20)) == 0) {
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MD5_Update(&key->md, in, md5_off);
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RC4(&key->ks, rc4_off, in, out);
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rc4_md5_enc(&key->ks, in + rc4_off, out + rc4_off,
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&key->md, in + md5_off, blocks);
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blocks *= MD5_CBLOCK;
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rc4_off += blocks;
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md5_off += blocks;
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key->md.Nh += blocks >> 29;
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key->md.Nl += blocks <<= 3;
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if (key->md.Nl < (unsigned int)blocks)
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key->md.Nh++;
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} else {
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rc4_off = 0;
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md5_off = 0;
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}
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# endif
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MD5_Update(&key->md, in + md5_off, plen - md5_off);
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if (plen != len) { /* "TLS" mode of operation */
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if (in != out)
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memcpy(out + rc4_off, in + rc4_off, plen - rc4_off);
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/* calculate HMAC and append it to payload */
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MD5_Final(out + plen, &key->md);
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key->md = key->tail;
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MD5_Update(&key->md, out + plen, MD5_DIGEST_LENGTH);
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MD5_Final(out + plen, &key->md);
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/* encrypt HMAC at once */
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RC4(&key->ks, len - rc4_off, out + rc4_off, out + rc4_off);
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} else {
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RC4(&key->ks, len - rc4_off, in + rc4_off, out + rc4_off);
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}
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} else {
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unsigned char mac[MD5_DIGEST_LENGTH];
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# if defined(STITCHED_CALL)
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/* digest has to "fall behind" */
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if (md5_off > rc4_off)
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rc4_off += 2 * MD5_CBLOCK;
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else
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rc4_off += MD5_CBLOCK;
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if (len > rc4_off && (blocks = (len - rc4_off) / MD5_CBLOCK) &&
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(OPENSSL_ia32cap_P[0] & (1 << 20)) == 0) {
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RC4(&key->ks, rc4_off, in, out);
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MD5_Update(&key->md, out, md5_off);
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rc4_md5_enc(&key->ks, in + rc4_off, out + rc4_off,
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&key->md, out + md5_off, blocks);
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blocks *= MD5_CBLOCK;
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rc4_off += blocks;
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md5_off += blocks;
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l = (key->md.Nl + (blocks << 3)) & 0xffffffffU;
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if (l < key->md.Nl)
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key->md.Nh++;
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key->md.Nl = l;
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key->md.Nh += blocks >> 29;
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} else {
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md5_off = 0;
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rc4_off = 0;
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}
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# endif
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/* decrypt HMAC at once */
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RC4(&key->ks, len - rc4_off, in + rc4_off, out + rc4_off);
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if (plen != NO_PAYLOAD_LENGTH) { /* "TLS" mode of operation */
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MD5_Update(&key->md, out + md5_off, plen - md5_off);
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/* calculate HMAC and verify it */
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MD5_Final(mac, &key->md);
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key->md = key->tail;
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MD5_Update(&key->md, mac, MD5_DIGEST_LENGTH);
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MD5_Final(mac, &key->md);
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if (CRYPTO_memcmp(out + plen, mac, MD5_DIGEST_LENGTH))
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return 0;
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} else {
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MD5_Update(&key->md, out + md5_off, len - md5_off);
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}
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}
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key->payload_length = NO_PAYLOAD_LENGTH;
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return 1;
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}
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static int rc4_hmac_md5_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg,
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void *ptr)
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{
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EVP_RC4_HMAC_MD5 *key = data(ctx);
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switch (type) {
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case EVP_CTRL_AEAD_SET_MAC_KEY:
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{
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unsigned int i;
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unsigned char hmac_key[64];
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memset(hmac_key, 0, sizeof(hmac_key));
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if (arg > (int)sizeof(hmac_key)) {
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MD5_Init(&key->head);
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MD5_Update(&key->head, ptr, arg);
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MD5_Final(hmac_key, &key->head);
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} else {
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memcpy(hmac_key, ptr, arg);
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}
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for (i = 0; i < sizeof(hmac_key); i++)
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hmac_key[i] ^= 0x36; /* ipad */
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MD5_Init(&key->head);
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MD5_Update(&key->head, hmac_key, sizeof(hmac_key));
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for (i = 0; i < sizeof(hmac_key); i++)
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hmac_key[i] ^= 0x36 ^ 0x5c; /* opad */
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MD5_Init(&key->tail);
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MD5_Update(&key->tail, hmac_key, sizeof(hmac_key));
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OPENSSL_cleanse(hmac_key, sizeof(hmac_key));
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return 1;
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}
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case EVP_CTRL_AEAD_TLS1_AAD:
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{
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unsigned char *p = ptr;
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unsigned int len;
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if (arg != EVP_AEAD_TLS1_AAD_LEN)
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return -1;
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len = p[arg - 2] << 8 | p[arg - 1];
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if (!ctx->encrypt) {
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if (len < MD5_DIGEST_LENGTH)
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return -1;
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len -= MD5_DIGEST_LENGTH;
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p[arg - 2] = len >> 8;
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p[arg - 1] = len;
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}
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key->payload_length = len;
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key->md = key->head;
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MD5_Update(&key->md, p, arg);
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return MD5_DIGEST_LENGTH;
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}
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default:
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return -1;
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}
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}
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static EVP_CIPHER r4_hmac_md5_cipher = {
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# ifdef NID_rc4_hmac_md5
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NID_rc4_hmac_md5,
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# else
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NID_undef,
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# endif
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1, EVP_RC4_KEY_SIZE, 0,
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EVP_CIPH_STREAM_CIPHER | EVP_CIPH_VARIABLE_LENGTH |
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EVP_CIPH_FLAG_AEAD_CIPHER,
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rc4_hmac_md5_init_key,
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rc4_hmac_md5_cipher,
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NULL,
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sizeof(EVP_RC4_HMAC_MD5),
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NULL,
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NULL,
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rc4_hmac_md5_ctrl,
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NULL
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};
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const EVP_CIPHER *EVP_rc4_hmac_md5(void)
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{
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return (&r4_hmac_md5_cipher);
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}
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#endif
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