diff options
author | Steve Langasek <steve.langasek@canonical.com> | 2019-02-09 21:28:06 -0800 |
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committer | Steve Langasek <steve.langasek@canonical.com> | 2019-02-09 21:32:44 -0800 |
commit | ab4c731c1dd379acd3e95971af57401fb0a650a1 (patch) | |
tree | 6a26fb8d0746cbbaa6c2d4b242c73442bcc1df06 /Cryptlib/OpenSSL/crypto/cmac/cmac.c | |
parent | 0d63079c7da8e86104ce4bbdae2f6cb8d2ea40c6 (diff) | |
parent | 9c12130f9cd2ae11a9336813dd1f1669c0b64ad0 (diff) | |
download | efi-boot-shim-debian/15+1533136590.3beb971-1.tar.gz efi-boot-shim-debian/15+1533136590.3beb971-1.zip |
* New upstream release.debian/15+1533136590.3beb971-1
- debian/patches/second-stage-path: dropped; the default loader path now
includes an arch suffix.
- debian/patches/sbsigntool-no-pesign: dropped; no longer needed.
* Drop remaining patches that were not being applied.
* Sync packaging from Ubuntu:
- debian/copyright: Update upstream source location.
- debian/control: add a Build-Depends on libelf-dev.
- Enable arm64 build.
- debian/patches/fixup_git.patch: don't run git in clean; we're not
really in a git tree.
- debian/rules, debian/shim.install: use the upstream install target as
intended, and move files to the target directory using dh_install.
- define RELEASE and COMMIT_ID for the snapshot.
- Set ENABLE_HTTPBOOT to enable the HTTP Boot feature.
- Update dh_auto_build/dh_auto_clean/dh_auto_install for new upstream
options: set MAKELEVEL.
- Define an EFI_ARCH variable, and use that for paths to shim. This
makes it possible to build a shim for other architectures than amd64.
- Set EFIDIR=$distro for dh_auto_install; that will let files be installed
in the "right" final directories, and makes boot.csv for us.
- Set ENABLE_SHIM_CERT, to keep using ephemeral self-signed certs built
at compile-time for MokManager and fallback.
- Set ENABLE_SBSIGN, to use sbsign instead of pesign for signing fallback
and MokManager.
Diffstat (limited to 'Cryptlib/OpenSSL/crypto/cmac/cmac.c')
-rw-r--r-- | Cryptlib/OpenSSL/crypto/cmac/cmac.c | 173 |
1 files changed, 45 insertions, 128 deletions
diff --git a/Cryptlib/OpenSSL/crypto/cmac/cmac.c b/Cryptlib/OpenSSL/crypto/cmac/cmac.c index 2954b6eb..c4f13a06 100644 --- a/Cryptlib/OpenSSL/crypto/cmac/cmac.c +++ b/Cryptlib/OpenSSL/crypto/cmac/cmac.c @@ -1,70 +1,21 @@ -/* crypto/cmac/cmac.c */ /* - * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL - * project. - */ -/* ==================================================================== - * Copyright (c) 2010 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. + * Copyright 2010-2016 The OpenSSL Project Authors. All Rights Reserved. * - * 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. - * - * 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. - * ==================================================================== + * 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 */ #include <stdio.h> #include <stdlib.h> #include <string.h> -#include "cryptlib.h" +#include "internal/cryptlib.h" #include <openssl/cmac.h> -#ifdef OPENSSL_FIPS -# include <openssl/fips.h> -#endif - struct CMAC_CTX_st { /* Cipher context to use */ - EVP_CIPHER_CTX cctx; + EVP_CIPHER_CTX *cctx; /* Keys k1 and k2 */ unsigned char k1[EVP_MAX_BLOCK_LENGTH]; unsigned char k2[EVP_MAX_BLOCK_LENGTH]; @@ -78,40 +29,38 @@ struct CMAC_CTX_st { /* Make temporary keys K1 and K2 */ -static void make_kn(unsigned char *k1, unsigned char *l, int bl) +static void make_kn(unsigned char *k1, const unsigned char *l, int bl) { int i; + unsigned char c = l[0], carry = c >> 7, cnext; + /* Shift block to left, including carry */ - for (i = 0; i < bl; i++) { - k1[i] = l[i] << 1; - if (i < bl - 1 && l[i + 1] & 0x80) - k1[i] |= 1; - } + for (i = 0; i < bl - 1; i++, c = cnext) + k1[i] = (c << 1) | ((cnext = l[i + 1]) >> 7); + /* If MSB set fixup with R */ - if (l[0] & 0x80) - k1[bl - 1] ^= bl == 16 ? 0x87 : 0x1b; + k1[i] = (c << 1) ^ ((0 - carry) & (bl == 16 ? 0x87 : 0x1b)); } CMAC_CTX *CMAC_CTX_new(void) { CMAC_CTX *ctx; - ctx = OPENSSL_malloc(sizeof(CMAC_CTX)); - if (!ctx) + + ctx = OPENSSL_malloc(sizeof(*ctx)); + if (ctx == NULL) return NULL; - EVP_CIPHER_CTX_init(&ctx->cctx); + ctx->cctx = EVP_CIPHER_CTX_new(); + if (ctx->cctx == NULL) { + OPENSSL_free(ctx); + return NULL; + } ctx->nlast_block = -1; return ctx; } void CMAC_CTX_cleanup(CMAC_CTX *ctx) { -#ifdef OPENSSL_FIPS - if (FIPS_mode() && !ctx->cctx.engine) { - FIPS_cmac_ctx_cleanup(ctx); - return; - } -#endif - EVP_CIPHER_CTX_cleanup(&ctx->cctx); + EVP_CIPHER_CTX_free(ctx->cctx); OPENSSL_cleanse(ctx->tbl, EVP_MAX_BLOCK_LENGTH); OPENSSL_cleanse(ctx->k1, EVP_MAX_BLOCK_LENGTH); OPENSSL_cleanse(ctx->k2, EVP_MAX_BLOCK_LENGTH); @@ -121,7 +70,7 @@ void CMAC_CTX_cleanup(CMAC_CTX *ctx) EVP_CIPHER_CTX *CMAC_CTX_get0_cipher_ctx(CMAC_CTX *ctx) { - return &ctx->cctx; + return ctx->cctx; } void CMAC_CTX_free(CMAC_CTX *ctx) @@ -137,9 +86,9 @@ int CMAC_CTX_copy(CMAC_CTX *out, const CMAC_CTX *in) int bl; if (in->nlast_block == -1) return 0; - if (!EVP_CIPHER_CTX_copy(&out->cctx, &in->cctx)) + if (!EVP_CIPHER_CTX_copy(out->cctx, in->cctx)) return 0; - bl = EVP_CIPHER_CTX_block_size(&in->cctx); + bl = EVP_CIPHER_CTX_block_size(in->cctx); memcpy(out->k1, in->k1, bl); memcpy(out->k2, in->k2, bl); memcpy(out->tbl, in->tbl, bl); @@ -151,62 +100,38 @@ int CMAC_CTX_copy(CMAC_CTX *out, const CMAC_CTX *in) int CMAC_Init(CMAC_CTX *ctx, const void *key, size_t keylen, const EVP_CIPHER *cipher, ENGINE *impl) { - static unsigned char zero_iv[EVP_MAX_BLOCK_LENGTH]; -#ifdef OPENSSL_FIPS - if (FIPS_mode()) { - /* If we have an ENGINE need to allow non FIPS */ - if ((impl || ctx->cctx.engine) - && !(ctx->cctx.flags & EVP_CIPH_FLAG_NON_FIPS_ALLOW)) { - EVPerr(EVP_F_CMAC_INIT, EVP_R_DISABLED_FOR_FIPS); - return 0; - } - - /* Switch to FIPS cipher implementation if possible */ - if (cipher != NULL) { - const EVP_CIPHER *fcipher; - fcipher = FIPS_get_cipherbynid(EVP_CIPHER_nid(cipher)); - if (fcipher != NULL) - cipher = fcipher; - } - /* - * Other algorithm blocking will be done in FIPS_cmac_init, via - * FIPS_cipherinit(). - */ - if (!impl && !ctx->cctx.engine) - return FIPS_cmac_init(ctx, key, keylen, cipher, NULL); - } -#endif + static const unsigned char zero_iv[EVP_MAX_BLOCK_LENGTH] = { 0 }; /* All zeros means restart */ if (!key && !cipher && !impl && keylen == 0) { /* Not initialised */ if (ctx->nlast_block == -1) return 0; - if (!EVP_EncryptInit_ex(&ctx->cctx, NULL, NULL, NULL, zero_iv)) + if (!EVP_EncryptInit_ex(ctx->cctx, NULL, NULL, NULL, zero_iv)) return 0; - memset(ctx->tbl, 0, EVP_CIPHER_CTX_block_size(&ctx->cctx)); + memset(ctx->tbl, 0, EVP_CIPHER_CTX_block_size(ctx->cctx)); ctx->nlast_block = 0; return 1; } - /* Initialiase context */ - if (cipher && !EVP_EncryptInit_ex(&ctx->cctx, cipher, impl, NULL, NULL)) + /* Initialise context */ + if (cipher && !EVP_EncryptInit_ex(ctx->cctx, cipher, impl, NULL, NULL)) return 0; /* Non-NULL key means initialisation complete */ if (key) { int bl; - if (!EVP_CIPHER_CTX_cipher(&ctx->cctx)) + if (!EVP_CIPHER_CTX_cipher(ctx->cctx)) return 0; - if (!EVP_CIPHER_CTX_set_key_length(&ctx->cctx, keylen)) + if (!EVP_CIPHER_CTX_set_key_length(ctx->cctx, keylen)) return 0; - if (!EVP_EncryptInit_ex(&ctx->cctx, NULL, NULL, key, zero_iv)) + if (!EVP_EncryptInit_ex(ctx->cctx, NULL, NULL, key, zero_iv)) return 0; - bl = EVP_CIPHER_CTX_block_size(&ctx->cctx); - if (!EVP_Cipher(&ctx->cctx, ctx->tbl, zero_iv, bl)) + bl = EVP_CIPHER_CTX_block_size(ctx->cctx); + if (!EVP_Cipher(ctx->cctx, ctx->tbl, zero_iv, bl)) return 0; make_kn(ctx->k1, ctx->tbl, bl); make_kn(ctx->k2, ctx->k1, bl); OPENSSL_cleanse(ctx->tbl, bl); /* Reset context again ready for first data block */ - if (!EVP_EncryptInit_ex(&ctx->cctx, NULL, NULL, NULL, zero_iv)) + if (!EVP_EncryptInit_ex(ctx->cctx, NULL, NULL, NULL, zero_iv)) return 0; /* Zero tbl so resume works */ memset(ctx->tbl, 0, bl); @@ -219,15 +144,11 @@ int CMAC_Update(CMAC_CTX *ctx, const void *in, size_t dlen) { const unsigned char *data = in; size_t bl; -#ifdef OPENSSL_FIPS - if (FIPS_mode() && !ctx->cctx.engine) - return FIPS_cmac_update(ctx, in, dlen); -#endif if (ctx->nlast_block == -1) return 0; if (dlen == 0) return 1; - bl = EVP_CIPHER_CTX_block_size(&ctx->cctx); + bl = EVP_CIPHER_CTX_block_size(ctx->cctx); /* Copy into partial block if we need to */ if (ctx->nlast_block > 0) { size_t nleft; @@ -242,12 +163,12 @@ int CMAC_Update(CMAC_CTX *ctx, const void *in, size_t dlen) return 1; data += nleft; /* Else not final block so encrypt it */ - if (!EVP_Cipher(&ctx->cctx, ctx->tbl, ctx->last_block, bl)) + if (!EVP_Cipher(ctx->cctx, ctx->tbl, ctx->last_block, bl)) return 0; } /* Encrypt all but one of the complete blocks left */ while (dlen > bl) { - if (!EVP_Cipher(&ctx->cctx, ctx->tbl, data, bl)) + if (!EVP_Cipher(ctx->cctx, ctx->tbl, data, bl)) return 0; dlen -= bl; data += bl; @@ -262,13 +183,9 @@ int CMAC_Update(CMAC_CTX *ctx, const void *in, size_t dlen) int CMAC_Final(CMAC_CTX *ctx, unsigned char *out, size_t *poutlen) { int i, bl, lb; -#ifdef OPENSSL_FIPS - if (FIPS_mode() && !ctx->cctx.engine) - return FIPS_cmac_final(ctx, out, poutlen); -#endif if (ctx->nlast_block == -1) return 0; - bl = EVP_CIPHER_CTX_block_size(&ctx->cctx); + bl = EVP_CIPHER_CTX_block_size(ctx->cctx); *poutlen = (size_t)bl; if (!out) return 1; @@ -284,7 +201,7 @@ int CMAC_Final(CMAC_CTX *ctx, unsigned char *out, size_t *poutlen) for (i = 0; i < bl; i++) out[i] = ctx->last_block[i] ^ ctx->k2[i]; } - if (!EVP_Cipher(&ctx->cctx, out, out, bl)) { + if (!EVP_Cipher(ctx->cctx, out, out, bl)) { OPENSSL_cleanse(out, bl); return 0; } @@ -296,11 +213,11 @@ int CMAC_resume(CMAC_CTX *ctx) if (ctx->nlast_block == -1) return 0; /* - * The buffer "tbl" containes the last fully encrypted block which is the + * The buffer "tbl" contains the last fully encrypted block which is the * last IV (or all zeroes if no last encrypted block). The last block has - * not been modified since CMAC_final(). So reinitliasing using the last + * not been modified since CMAC_final(). So reinitialising using the last * decrypted block will allow CMAC to continue after calling * CMAC_Final(). */ - return EVP_EncryptInit_ex(&ctx->cctx, NULL, NULL, NULL, ctx->tbl); + return EVP_EncryptInit_ex(ctx->cctx, NULL, NULL, NULL, ctx->tbl); } |