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authorPeter Jones <pjones@redhat.com>2017-08-31 13:57:30 -0400
committerPeter Jones <pjones@redhat.com>2017-08-31 15:13:58 -0400
commit1d39ada8cb336d9e7c156be7526b674851fbdd40 (patch)
treedc497e33b1d4830bf58d79dedc3026087f31f044 /Cryptlib/OpenSSL/crypto/modes/wrap128.c
parenteae64276ffe0361d2b4087c48390d12f157f65f0 (diff)
downloadefi-boot-shim-1d39ada8cb336d9e7c156be7526b674851fbdd40.tar.gz
efi-boot-shim-1d39ada8cb336d9e7c156be7526b674851fbdd40.zip
Revert lots of Cryptlib updates.
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 commit 513cbe2aea689bf968f171f894f3d4cdb43524d5. This reverts commit e9cc33d6f2b7f35c6f5e349fd83fb9ae0bc66226. This reverts commit 80d49f758ead0180bfe6161931838e0578248303. This reverts commit 9bc647e2b23bcfd69a0077c0717fbc454c919a57. This reverts commit ae75df6232ad30f3e8736e9449692d58a7439260. This reverts commit e883479f35644d17db7efed710657c8543cfcb68. This reverts commit 97469449fda5ba933a64280917e776487301a127. This reverts commit e39692647f78e13d757ddbfdd36f440d5f526050. This reverts commit 0f3dfc01e2d5e7df882c963dd8dc4a0dfbfc96ad. This reverts commit 4da6ac819510c7cc4ba21d7a735d69b45daa5873. This reverts commit d064bd7eef201f26cb926450a76260b5187ac689. This reverts commit 9bc86cfd6f9387f0da9d5c0102b6aa5627e91c91. This reverts commit ab9a05a10f16b33f7ee1e9da360c7801eebdb9d2. Signed-off-by: Peter Jones <pjones@redhat.com>
Diffstat (limited to 'Cryptlib/OpenSSL/crypto/modes/wrap128.c')
-rw-r--r--Cryptlib/OpenSSL/crypto/modes/wrap128.c311
1 files changed, 60 insertions, 251 deletions
diff --git a/Cryptlib/OpenSSL/crypto/modes/wrap128.c b/Cryptlib/OpenSSL/crypto/modes/wrap128.c
index 46809a0e..38497837 100644
--- a/Cryptlib/OpenSSL/crypto/modes/wrap128.c
+++ b/Cryptlib/OpenSSL/crypto/modes/wrap128.c
@@ -1,50 +1,70 @@
+/* crypto/modes/wrap128.c */
/*
- * Copyright 2013-2016 The OpenSSL Project Authors. All Rights Reserved.
- *
- * Licensed under the OpenSSL license (the "License"). You may not use
- * this file except in compliance with the License. You can obtain a copy
- * in the file LICENSE in the source distribution or at
- * https://www.openssl.org/source/license.html
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
+ * project.
*/
-
-/** Beware!
+/* ====================================================================
+ * Copyright (c) 2013 The OpenSSL Project. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ * software must display the following acknowledgment:
+ * "This product includes software developed by the OpenSSL Project
+ * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ * endorse or promote products derived from this software without
+ * prior written permission. For written permission, please contact
+ * licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ * nor may "OpenSSL" appear in their names without prior written
+ * permission of the OpenSSL Project.
*
- * Following wrapping modes were designed for AES but this implementation
- * allows you to use them for any 128 bit block cipher.
+ * 6. Redistributions of any form whatsoever must retain the following
+ * acknowledgment:
+ * "This product includes software developed by the OpenSSL Project
+ * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
*/
-#include "internal/cryptlib.h"
+#include "cryptlib.h"
#include <openssl/modes.h>
-/** RFC 3394 section 2.2.3.1 Default Initial Value */
static const unsigned char default_iv[] = {
0xA6, 0xA6, 0xA6, 0xA6, 0xA6, 0xA6, 0xA6, 0xA6,
};
-/** RFC 5649 section 3 Alternative Initial Value 32-bit constant */
-static const unsigned char default_aiv[] = {
- 0xA6, 0x59, 0x59, 0xA6
-};
-
-/** Input size limit: lower than maximum of standards but far larger than
- * anything that will be used in practice.
+/*
+ * Input size limit: lower than maximum of standards but far larger than
+ * anything that will be used in practice.
*/
#define CRYPTO128_WRAP_MAX (1UL << 31)
-/** Wrapping according to RFC 3394 section 2.2.1.
- *
- * @param[in] key Key value.
- * @param[in] iv IV value. Length = 8 bytes. NULL = use default_iv.
- * @param[in] in Plaintext as n 64-bit blocks, n >= 2.
- * @param[in] inlen Length of in.
- * @param[out] out Ciphertext. Minimal buffer length = (inlen + 8) bytes.
- * Input and output buffers can overlap if block function
- * supports that.
- * @param[in] block Block processing function.
- * @return 0 if inlen does not consist of n 64-bit blocks, n >= 2.
- * or if inlen > CRYPTO128_WRAP_MAX.
- * Output length if wrapping succeeded.
- */
size_t CRYPTO_128_wrap(void *key, const unsigned char *iv,
unsigned char *out,
const unsigned char *in, size_t inlen,
@@ -52,7 +72,7 @@ size_t CRYPTO_128_wrap(void *key, const unsigned char *iv,
{
unsigned char *A, B[16], *R;
size_t i, j, t;
- if ((inlen & 0x7) || (inlen < 16) || (inlen > CRYPTO128_WRAP_MAX))
+ if ((inlen & 0x7) || (inlen < 8) || (inlen > CRYPTO128_WRAP_MAX))
return 0;
A = B;
t = 1;
@@ -80,26 +100,10 @@ size_t CRYPTO_128_wrap(void *key, const unsigned char *iv,
return inlen + 8;
}
-/** Unwrapping according to RFC 3394 section 2.2.2 steps 1-2.
- * The IV check (step 3) is responsibility of the caller.
- *
- * @param[in] key Key value.
- * @param[out] iv Unchecked IV value. Minimal buffer length = 8 bytes.
- * @param[out] out Plaintext without IV.
- * Minimal buffer length = (inlen - 8) bytes.
- * Input and output buffers can overlap if block function
- * supports that.
- * @param[in] in Ciphertext as n 64-bit blocks.
- * @param[in] inlen Length of in.
- * @param[in] block Block processing function.
- * @return 0 if inlen is out of range [24, CRYPTO128_WRAP_MAX]
- * or if inlen is not a multiple of 8.
- * Output length otherwise.
- */
-static size_t crypto_128_unwrap_raw(void *key, unsigned char *iv,
- unsigned char *out,
- const unsigned char *in, size_t inlen,
- block128_f block)
+size_t CRYPTO_128_unwrap(void *key, const unsigned char *iv,
+ unsigned char *out,
+ const unsigned char *in, size_t inlen,
+ block128_f block)
{
unsigned char *A, B[16], *R;
size_t i, j, t;
@@ -124,206 +128,11 @@ static size_t crypto_128_unwrap_raw(void *key, unsigned char *iv,
memcpy(R, B + 8, 8);
}
}
- memcpy(iv, A, 8);
- return inlen;
-}
-
-/** Unwrapping according to RFC 3394 section 2.2.2, including the IV check.
- * The first block of plaintext has to match the supplied IV, otherwise an
- * error is returned.
- *
- * @param[in] key Key value.
- * @param[out] iv IV value to match against. Length = 8 bytes.
- * NULL = use default_iv.
- * @param[out] out Plaintext without IV.
- * Minimal buffer length = (inlen - 8) bytes.
- * Input and output buffers can overlap if block function
- * supports that.
- * @param[in] in Ciphertext as n 64-bit blocks.
- * @param[in] inlen Length of in.
- * @param[in] block Block processing function.
- * @return 0 if inlen is out of range [24, CRYPTO128_WRAP_MAX]
- * or if inlen is not a multiple of 8
- * or if IV doesn't match expected value.
- * Output length otherwise.
- */
-size_t CRYPTO_128_unwrap(void *key, const unsigned char *iv,
- unsigned char *out, const unsigned char *in,
- size_t inlen, block128_f block)
-{
- size_t ret;
- unsigned char got_iv[8];
-
- ret = crypto_128_unwrap_raw(key, got_iv, out, in, inlen, block);
- if (ret == 0)
- return 0;
-
if (!iv)
iv = default_iv;
- if (CRYPTO_memcmp(got_iv, iv, 8)) {
- OPENSSL_cleanse(out, ret);
- return 0;
- }
- return ret;
-}
-
-/** Wrapping according to RFC 5649 section 4.1.
- *
- * @param[in] key Key value.
- * @param[in] icv (Non-standard) IV, 4 bytes. NULL = use default_aiv.
- * @param[out] out Ciphertext. Minimal buffer length = (inlen + 15) bytes.
- * Input and output buffers can overlap if block function
- * supports that.
- * @param[in] in Plaintext as n 64-bit blocks, n >= 2.
- * @param[in] inlen Length of in.
- * @param[in] block Block processing function.
- * @return 0 if inlen is out of range [1, CRYPTO128_WRAP_MAX].
- * Output length if wrapping succeeded.
- */
-size_t CRYPTO_128_wrap_pad(void *key, const unsigned char *icv,
- unsigned char *out,
- const unsigned char *in, size_t inlen,
- block128_f block)
-{
- /* n: number of 64-bit blocks in the padded key data
- *
- * If length of plain text is not a multiple of 8, pad the plain text octet
- * string on the right with octets of zeros, where final length is the
- * smallest multiple of 8 that is greater than length of plain text.
- * If length of plain text is a multiple of 8, then there is no padding. */
- const size_t blocks_padded = (inlen + 7) / 8; /* CEILING(m/8) */
- const size_t padded_len = blocks_padded * 8;
- const size_t padding_len = padded_len - inlen;
- /* RFC 5649 section 3: Alternative Initial Value */
- unsigned char aiv[8];
- int ret;
-
- /* Section 1: use 32-bit fixed field for plaintext octet length */
- if (inlen == 0 || inlen >= CRYPTO128_WRAP_MAX)
- return 0;
-
- /* Section 3: Alternative Initial Value */
- if (!icv)
- memcpy(aiv, default_aiv, 4);
- else
- memcpy(aiv, icv, 4); /* Standard doesn't mention this. */
-
- aiv[4] = (inlen >> 24) & 0xFF;
- aiv[5] = (inlen >> 16) & 0xFF;
- aiv[6] = (inlen >> 8) & 0xFF;
- aiv[7] = inlen & 0xFF;
-
- if (padded_len == 8) {
- /*
- * Section 4.1 - special case in step 2: If the padded plaintext
- * contains exactly eight octets, then prepend the AIV and encrypt
- * the resulting 128-bit block using AES in ECB mode.
- */
- memmove(out + 8, in, inlen);
- memcpy(out, aiv, 8);
- memset(out + 8 + inlen, 0, padding_len);
- block(out, out, key);
- ret = 16; /* AIV + padded input */
- } else {
- memmove(out, in, inlen);
- memset(out + inlen, 0, padding_len); /* Section 4.1 step 1 */
- ret = CRYPTO_128_wrap(key, aiv, out, out, padded_len, block);
- }
-
- return ret;
-}
-
-/** Unwrapping according to RFC 5649 section 4.2.
- *
- * @param[in] key Key value.
- * @param[in] icv (Non-standard) IV, 4 bytes. NULL = use default_aiv.
- * @param[out] out Plaintext. Minimal buffer length = inlen bytes.
- * Input and output buffers can overlap if block function
- * supports that.
- * @param[in] in Ciphertext as n 64-bit blocks.
- * @param[in] inlen Length of in.
- * @param[in] block Block processing function.
- * @return 0 if inlen is out of range [16, CRYPTO128_WRAP_MAX],
- * or if inlen is not a multiple of 8
- * or if IV and message length indicator doesn't match.
- * Output length if unwrapping succeeded and IV matches.
- */
-size_t CRYPTO_128_unwrap_pad(void *key, const unsigned char *icv,
- unsigned char *out,
- const unsigned char *in, size_t inlen,
- block128_f block)
-{
- /* n: number of 64-bit blocks in the padded key data */
- size_t n = inlen / 8 - 1;
- size_t padded_len;
- size_t padding_len;
- size_t ptext_len;
- /* RFC 5649 section 3: Alternative Initial Value */
- unsigned char aiv[8];
- static unsigned char zeros[8] = { 0x0 };
- size_t ret;
-
- /* Section 4.2: Ciphertext length has to be (n+1) 64-bit blocks. */
- if ((inlen & 0x7) != 0 || inlen < 16 || inlen >= CRYPTO128_WRAP_MAX)
- return 0;
-
- memmove(out, in, inlen);
- if (inlen == 16) {
- /*
- * Section 4.2 - special case in step 1: When n=1, the ciphertext
- * contains exactly two 64-bit blocks and they are decrypted as a
- * single AES block using AES in ECB mode: AIV | P[1] = DEC(K, C[0] |
- * C[1])
- */
- block(out, out, key);
- memcpy(aiv, out, 8);
- /* Remove AIV */
- memmove(out, out + 8, 8);
- padded_len = 8;
- } else {
- padded_len = inlen - 8;
- ret = crypto_128_unwrap_raw(key, aiv, out, out, inlen, block);
- if (padded_len != ret) {
- OPENSSL_cleanse(out, inlen);
- return 0;
- }
- }
-
- /*
- * Section 3: AIV checks: Check that MSB(32,A) = A65959A6. Optionally a
- * user-supplied value can be used (even if standard doesn't mention
- * this).
- */
- if ((!icv && CRYPTO_memcmp(aiv, default_aiv, 4))
- || (icv && CRYPTO_memcmp(aiv, icv, 4))) {
- OPENSSL_cleanse(out, inlen);
- return 0;
- }
-
- /*
- * Check that 8*(n-1) < LSB(32,AIV) <= 8*n. If so, let ptext_len =
- * LSB(32,AIV).
- */
-
- ptext_len = ((unsigned int)aiv[4] << 24)
- | ((unsigned int)aiv[5] << 16)
- | ((unsigned int)aiv[6] << 8)
- | (unsigned int)aiv[7];
- if (8 * (n - 1) >= ptext_len || ptext_len > 8 * n) {
- OPENSSL_cleanse(out, inlen);
- return 0;
- }
-
- /*
- * Check that the rightmost padding_len octets of the output data are
- * zero.
- */
- padding_len = padded_len - ptext_len;
- if (CRYPTO_memcmp(out + ptext_len, zeros, padding_len) != 0) {
+ if (memcmp(A, iv, 8)) {
OPENSSL_cleanse(out, inlen);
return 0;
}
-
- /* Section 4.2 step 3: Remove padding */
- return ptext_len;
+ return inlen;
}