+++ /dev/null
-/* $OpenBSD: eng_aesni.c,v 1.14 2023/07/20 15:08:12 tb Exp $ */
-/*
- * Support for Intel AES-NI instruction set
- * Author: Huang Ying <ying.huang@intel.com>
- *
- * Intel AES-NI is a new set of Single Instruction Multiple Data
- * (SIMD) instructions that are going to be introduced in the next
- * generation of Intel processor, as of 2009. These instructions
- * enable fast and secure data encryption and decryption, using the
- * Advanced Encryption Standard (AES), defined by FIPS Publication
- * number 197. The architecture introduces six instructions that
- * offer full hardware support for AES. Four of them support high
- * performance data encryption and decryption, and the other two
- * instructions support the AES key expansion procedure.
- *
- * The white paper can be downloaded from:
- * http://softwarecommunity.intel.com/isn/downloads/intelavx/AES-Instructions-Set_WP.pdf
- *
- * This file is based on engines/e_padlock.c
- */
-
-/* ====================================================================
- * Copyright (c) 1999-2001 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.
- *
- * 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.
- * ====================================================================
- *
- * This product includes cryptographic software written by Eric Young
- * (eay@cryptsoft.com). This product includes software written by Tim
- * Hudson (tjh@cryptsoft.com).
- *
- */
-
-#include <stdio.h>
-
-#include <openssl/opensslconf.h>
-
-#if !defined(OPENSSL_NO_HW) && !defined(OPENSSL_NO_HW_AES_NI) && !defined(OPENSSL_NO_AES)
-
-#include <openssl/aes.h>
-#include <openssl/engine.h>
-#include <openssl/err.h>
-#include <openssl/evp.h>
-
-#include "evp_local.h"
-
-/* AES-NI is available *ONLY* on some x86 CPUs. Not only that it
- doesn't exist elsewhere, but it even can't be compiled on other
- platforms! */
-#undef COMPILE_HW_AESNI
-#if (defined(__x86_64) || defined(__x86_64__) || \
- defined(_M_AMD64) || defined(_M_X64) || \
- defined(OPENSSL_IA32_SSE2)) && !defined(OPENSSL_NO_ASM) && !defined(__i386__)
-#define COMPILE_HW_AESNI
-#include "x86_arch.h"
-#endif
-static ENGINE *ENGINE_aesni(void);
-
-void ENGINE_load_aesni(void)
-{
-/* On non-x86 CPUs it just returns. */
-#ifdef COMPILE_HW_AESNI
- ENGINE *toadd = ENGINE_aesni();
- if (toadd == NULL)
- return;
- ENGINE_add(toadd);
- ENGINE_register_complete(toadd);
- ENGINE_free(toadd);
- ERR_clear_error();
-#endif
-}
-
-#ifdef COMPILE_HW_AESNI
-int aesni_set_encrypt_key(const unsigned char *userKey, int bits,
- AES_KEY *key);
-int aesni_set_decrypt_key(const unsigned char *userKey, int bits,
- AES_KEY *key);
-
-void aesni_encrypt(const unsigned char *in, unsigned char *out,
- const AES_KEY *key);
-void aesni_decrypt(const unsigned char *in, unsigned char *out,
- const AES_KEY *key);
-
-void aesni_ecb_encrypt(const unsigned char *in, unsigned char *out,
- size_t length, const AES_KEY *key, int enc);
-void aesni_cbc_encrypt(const unsigned char *in, unsigned char *out,
- size_t length, const AES_KEY *key, unsigned char *ivec, int enc);
-
-/* Function for ENGINE detection and control */
-static int aesni_init(ENGINE *e);
-
-/* Cipher Stuff */
-static int aesni_ciphers(ENGINE *e, const EVP_CIPHER **cipher,
- const int **nids, int nid);
-
-#define AESNI_MIN_ALIGN 16
-#define AESNI_ALIGN(x) \
- ((void *)(((unsigned long)(x)+AESNI_MIN_ALIGN-1)&~(AESNI_MIN_ALIGN-1)))
-
-/* Engine names */
-static const char aesni_id[] = "aesni",
- aesni_name[] = "Intel AES-NI engine",
- no_aesni_name[] = "Intel AES-NI engine (no-aesni)";
-
-
-/* The input and output encrypted as though 128bit cfb mode is being
- * used. The extra state information to record how much of the
- * 128bit block we have used is contained in *num;
- */
-static void
-aesni_cfb128_encrypt(const unsigned char *in, unsigned char *out,
- unsigned int len, const void *key, unsigned char ivec[16], int *num,
- int enc)
-{
- unsigned int n;
- size_t l = 0;
-
- n = *num;
-
- if (enc) {
-#if !defined(OPENSSL_SMALL_FOOTPRINT)
- if (16%sizeof(size_t) == 0) do { /* always true actually */
- while (n && len) {
- *(out++) = ivec[n] ^= *(in++);
- --len;
- n = (n + 1) % 16;
- }
- while (len >= 16) {
- aesni_encrypt(ivec, ivec, key);
- for (n = 0; n < 16; n += sizeof(size_t)) {
- *(size_t*)(out + n) =
- *(size_t*)(ivec + n) ^= *(size_t*)(in + n);
- }
- len -= 16;
- out += 16;
- in += 16;
- }
- n = 0;
- if (len) {
- aesni_encrypt(ivec, ivec, key);
- while (len--) {
- out[n] = ivec[n] ^= in[n];
- ++n;
- }
- }
- *num = n;
- return;
- } while (0);
- /* the rest would be commonly eliminated by x86* compiler */
-#endif
- while (l < len) {
- if (n == 0) {
- aesni_encrypt(ivec, ivec, key);
- }
- out[l] = ivec[n] ^= in[l];
- ++l;
- n = (n + 1) % 16;
- }
- *num = n;
- } else {
-#if !defined(OPENSSL_SMALL_FOOTPRINT)
- if (16%sizeof(size_t) == 0) do { /* always true actually */
- while (n && len) {
- unsigned char c;
- *(out++) = ivec[n] ^ (c = *(in++));
- ivec[n] = c;
- --len;
- n = (n + 1) % 16;
- }
- while (len >= 16) {
- aesni_encrypt(ivec, ivec, key);
- for (n = 0; n < 16; n += sizeof(size_t)) {
- size_t t = *(size_t*)(in + n);
- *(size_t*)(out + n) = *(size_t*)(ivec + n) ^ t;
- *(size_t*)(ivec + n) = t;
- }
- len -= 16;
- out += 16;
- in += 16;
- }
- n = 0;
- if (len) {
- aesni_encrypt(ivec, ivec, key);
- while (len--) {
- unsigned char c;
- out[n] = ivec[n] ^ (c = in[n]);
- ivec[n] = c;
- ++n;
- }
- }
- *num = n;
- return;
- } while (0);
- /* the rest would be commonly eliminated by x86* compiler */
-#endif
- while (l < len) {
- unsigned char c;
- if (n == 0) {
- aesni_encrypt(ivec, ivec, key);
- }
- out[l] = ivec[n] ^ (c = in[l]);
- ivec[n] = c;
- ++l;
- n = (n + 1) % 16;
- }
- *num = n;
- }
-}
-
-/* The input and output encrypted as though 128bit ofb mode is being
- * used. The extra state information to record how much of the
- * 128bit block we have used is contained in *num;
- */
-static void
-aesni_ofb128_encrypt(const unsigned char *in, unsigned char *out,
- unsigned int len, const void *key, unsigned char ivec[16], int *num)
-{
- unsigned int n;
- size_t l = 0;
-
- n = *num;
-
-#if !defined(OPENSSL_SMALL_FOOTPRINT)
- if (16%sizeof(size_t) == 0) do { /* always true actually */
- while (n && len) {
- *(out++) = *(in++) ^ ivec[n];
- --len;
- n = (n + 1) % 16;
- }
- while (len >= 16) {
- aesni_encrypt(ivec, ivec, key);
- for (n = 0; n < 16; n += sizeof(size_t))
- *(size_t*)(out + n) =
- *(size_t*)(in + n) ^ *(size_t*)(ivec + n);
- len -= 16;
- out += 16;
- in += 16;
- }
- n = 0;
- if (len) {
- aesni_encrypt(ivec, ivec, key);
- while (len--) {
- out[n] = in[n] ^ ivec[n];
- ++n;
- }
- }
- *num = n;
- return;
- } while (0);
- /* the rest would be commonly eliminated by x86* compiler */
-#endif
- while (l < len) {
- if (n == 0) {
- aesni_encrypt(ivec, ivec, key);
- }
- out[l] = in[l] ^ ivec[n];
- ++l;
- n = (n + 1) % 16;
- }
-
- *num = n;
-}
-/* ===== Engine "management" functions ===== */
-
-/* Prepare the ENGINE structure for registration */
-static int
-aesni_bind_helper(ENGINE *e)
-{
- int engage;
-
- engage = (OPENSSL_cpu_caps() & CPUCAP_MASK_AESNI) != 0;
-
- /* Register everything or return with an error */
- if (!ENGINE_set_id(e, aesni_id) ||
- !ENGINE_set_name(e, engage ? aesni_name : no_aesni_name) ||
- !ENGINE_set_init_function(e, aesni_init) ||
- (engage && !ENGINE_set_ciphers (e, aesni_ciphers)))
- return 0;
-
- /* Everything looks good */
- return 1;
-}
-
-/* Constructor */
-static ENGINE *
-ENGINE_aesni(void)
-{
- ENGINE *eng = ENGINE_new();
-
- if (!eng) {
- return NULL;
- }
-
- if (!aesni_bind_helper(eng)) {
- ENGINE_free(eng);
- return NULL;
- }
-
- return eng;
-}
-
-/* Check availability of the engine */
-static int
-aesni_init(ENGINE *e)
-{
- return 1;
-}
-
-#if defined(NID_aes_128_cfb128) && ! defined (NID_aes_128_cfb)
-#define NID_aes_128_cfb NID_aes_128_cfb128
-#endif
-
-#if defined(NID_aes_128_ofb128) && ! defined (NID_aes_128_ofb)
-#define NID_aes_128_ofb NID_aes_128_ofb128
-#endif
-
-#if defined(NID_aes_192_cfb128) && ! defined (NID_aes_192_cfb)
-#define NID_aes_192_cfb NID_aes_192_cfb128
-#endif
-
-#if defined(NID_aes_192_ofb128) && ! defined (NID_aes_192_ofb)
-#define NID_aes_192_ofb NID_aes_192_ofb128
-#endif
-
-#if defined(NID_aes_256_cfb128) && ! defined (NID_aes_256_cfb)
-#define NID_aes_256_cfb NID_aes_256_cfb128
-#endif
-
-#if defined(NID_aes_256_ofb128) && ! defined (NID_aes_256_ofb)
-#define NID_aes_256_ofb NID_aes_256_ofb128
-#endif
-
-/* List of supported ciphers. */
-static int aesni_cipher_nids[] = {
- NID_aes_128_ecb,
- NID_aes_128_cbc,
- NID_aes_128_cfb,
- NID_aes_128_ofb,
-
- NID_aes_192_ecb,
- NID_aes_192_cbc,
- NID_aes_192_cfb,
- NID_aes_192_ofb,
-
- NID_aes_256_ecb,
- NID_aes_256_cbc,
- NID_aes_256_cfb,
- NID_aes_256_ofb,
-};
-static int aesni_cipher_nids_num =
- (sizeof(aesni_cipher_nids) / sizeof(aesni_cipher_nids[0]));
-
-typedef struct {
- AES_KEY ks;
- unsigned int _pad1[3];
-} AESNI_KEY;
-
-static int
-aesni_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *user_key,
- const unsigned char *iv, int enc)
-{
- int ret;
- AES_KEY *key = AESNI_ALIGN(ctx->cipher_data);
-
- if ((ctx->cipher->flags & EVP_CIPH_MODE) == EVP_CIPH_CFB_MODE ||
- (ctx->cipher->flags & EVP_CIPH_MODE) == EVP_CIPH_OFB_MODE ||
- enc)
- ret = aesni_set_encrypt_key(user_key, ctx->key_len * 8, key);
- else
- ret = aesni_set_decrypt_key(user_key, ctx->key_len * 8, key);
-
- if (ret < 0) {
- EVPerror(EVP_R_AES_KEY_SETUP_FAILED);
- return 0;
- }
-
- return 1;
-}
-
-static int
-aesni_cipher_ecb(EVP_CIPHER_CTX *ctx, unsigned char *out,
- const unsigned char *in, size_t inl)
-{
- AES_KEY *key = AESNI_ALIGN(ctx->cipher_data);
-
- aesni_ecb_encrypt(in, out, inl, key, ctx->encrypt);
- return 1;
-}
-
-static int
-aesni_cipher_cbc(EVP_CIPHER_CTX *ctx, unsigned char *out,
- const unsigned char *in, size_t inl)
-{
- AES_KEY *key = AESNI_ALIGN(ctx->cipher_data);
-
- aesni_cbc_encrypt(in, out, inl, key, ctx->iv, ctx->encrypt);
- return 1;
-}
-
-static int
-aesni_cipher_cfb(EVP_CIPHER_CTX *ctx, unsigned char *out,
- const unsigned char *in, size_t inl)
-{
- AES_KEY *key = AESNI_ALIGN(ctx->cipher_data);
-
- aesni_cfb128_encrypt(in, out, inl, key, ctx->iv, &ctx->num,
- ctx->encrypt);
- return 1;
-}
-
-static int
-aesni_cipher_ofb(EVP_CIPHER_CTX *ctx, unsigned char *out,
- const unsigned char *in, size_t inl)
-{
- AES_KEY *key = AESNI_ALIGN(ctx->cipher_data);
-
- aesni_ofb128_encrypt(in, out, inl, key, ctx->iv, &ctx->num);
- return 1;
-}
-
-#define AES_BLOCK_SIZE 16
-
-#define EVP_CIPHER_block_size_ECB AES_BLOCK_SIZE
-#define EVP_CIPHER_block_size_CBC AES_BLOCK_SIZE
-#define EVP_CIPHER_block_size_OFB 1
-#define EVP_CIPHER_block_size_CFB 1
-
-/* Declaring so many ciphers by hand would be a pain.
- Instead introduce a bit of preprocessor magic :-) */
-#define DECLARE_AES_EVP(ksize,lmode,umode) \
-static const EVP_CIPHER aesni_##ksize##_##lmode = { \
- NID_aes_##ksize##_##lmode, \
- EVP_CIPHER_block_size_##umode, \
- ksize / 8, \
- AES_BLOCK_SIZE, \
- 0 | EVP_CIPH_##umode##_MODE, \
- aesni_init_key, \
- aesni_cipher_##lmode, \
- NULL, \
- sizeof(AESNI_KEY), \
- EVP_CIPHER_set_asn1_iv, \
- EVP_CIPHER_get_asn1_iv, \
- NULL, \
- NULL \
-}
-
-DECLARE_AES_EVP(128, ecb, ECB);
-DECLARE_AES_EVP(128, cbc, CBC);
-DECLARE_AES_EVP(128, cfb, CFB);
-DECLARE_AES_EVP(128, ofb, OFB);
-
-DECLARE_AES_EVP(192, ecb, ECB);
-DECLARE_AES_EVP(192, cbc, CBC);
-DECLARE_AES_EVP(192, cfb, CFB);
-DECLARE_AES_EVP(192, ofb, OFB);
-
-DECLARE_AES_EVP(256, ecb, ECB);
-DECLARE_AES_EVP(256, cbc, CBC);
-DECLARE_AES_EVP(256, cfb, CFB);
-DECLARE_AES_EVP(256, ofb, OFB);
-
-static int
-aesni_ciphers(ENGINE *e, const EVP_CIPHER **cipher, const int **nids, int nid)
-{
- /* No specific cipher => return a list of supported nids ... */
- if (!cipher) {
- *nids = aesni_cipher_nids;
- return aesni_cipher_nids_num;
- }
-
- /* ... or the requested "cipher" otherwise */
- switch (nid) {
- case NID_aes_128_ecb:
- *cipher = &aesni_128_ecb;
- break;
- case NID_aes_128_cbc:
- *cipher = &aesni_128_cbc;
- break;
- case NID_aes_128_cfb:
- *cipher = &aesni_128_cfb;
- break;
- case NID_aes_128_ofb:
- *cipher = &aesni_128_ofb;
- break;
-
- case NID_aes_192_ecb:
- *cipher = &aesni_192_ecb;
- break;
- case NID_aes_192_cbc:
- *cipher = &aesni_192_cbc;
- break;
- case NID_aes_192_cfb:
- *cipher = &aesni_192_cfb;
- break;
- case NID_aes_192_ofb:
- *cipher = &aesni_192_ofb;
- break;
-
- case NID_aes_256_ecb:
- *cipher = &aesni_256_ecb;
- break;
- case NID_aes_256_cbc:
- *cipher = &aesni_256_cbc;
- break;
- case NID_aes_256_cfb:
- *cipher = &aesni_256_cfb;
- break;
- case NID_aes_256_ofb:
- *cipher = &aesni_256_ofb;
- break;
-
- default:
- /* Sorry, we don't support this NID */
- *cipher = NULL;
- return 0;
- }
- return 1;
-}
-
-#endif /* COMPILE_HW_AESNI */
-#endif /* !defined(OPENSSL_NO_HW) && !defined(OPENSSL_NO_HW_AESNI) && !defined(OPENSSL_NO_AES) */
+++ /dev/null
-/* $OpenBSD: eng_padlock.c,v 1.18 2023/07/20 15:08:12 tb Exp $ */
-/*
- * Support for VIA PadLock Advanced Cryptography Engine (ACE)
- * Written by Michal Ludvig <michal@logix.cz>
- * http://www.logix.cz/michal
- *
- * Big thanks to Andy Polyakov for a help with optimization,
- * assembler fixes, port to MS Windows and a lot of other
- * valuable work on this engine!
- */
-
-/* ====================================================================
- * Copyright (c) 1999-2001 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.
- *
- * 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.
- * ====================================================================
- *
- * This product includes cryptographic software written by Eric Young
- * (eay@cryptsoft.com). This product includes software written by Tim
- * Hudson (tjh@cryptsoft.com).
- *
- */
-
-#include <stdio.h>
-#include <string.h>
-
-#include <openssl/opensslconf.h>
-
-#include <openssl/crypto.h>
-#include <openssl/engine.h>
-#include <openssl/evp.h>
-#ifndef OPENSSL_NO_AES
-#include <openssl/aes.h>
-#endif
-#include <openssl/err.h>
-
-#ifndef OPENSSL_NO_HW
-#ifndef OPENSSL_NO_HW_PADLOCK
-
-/* Attempt to have a single source for both 0.9.7 and 0.9.8 :-) */
-#if (OPENSSL_VERSION_NUMBER >= 0x00908000L)
-# ifndef OPENSSL_NO_DYNAMIC_ENGINE
-# define DYNAMIC_ENGINE
-# endif
-#elif (OPENSSL_VERSION_NUMBER >= 0x00907000L)
-# ifdef ENGINE_DYNAMIC_SUPPORT
-# define DYNAMIC_ENGINE
-# endif
-#else
-# error "Only OpenSSL >= 0.9.7 is supported"
-#endif
-
-/* VIA PadLock AES is available *ONLY* on some x86 CPUs.
- Not only that it doesn't exist elsewhere, but it
- even can't be compiled on other platforms!
-
- In addition, because of the heavy use of inline assembler,
- compiler choice is limited to GCC and Microsoft C. */
-#undef COMPILE_HW_PADLOCK
-#if !defined(OPENSSL_NO_INLINE_ASM)
-# if (defined(__GNUC__) && (defined(__i386__) || defined(__i386)))
-# define COMPILE_HW_PADLOCK
-# endif
-#endif
-
-#ifdef OPENSSL_NO_DYNAMIC_ENGINE
-#ifdef COMPILE_HW_PADLOCK
-static ENGINE *ENGINE_padlock(void);
-#endif
-
-void
-ENGINE_load_padlock(void)
-{
-/* On non-x86 CPUs it just returns. */
-#ifdef COMPILE_HW_PADLOCK
- ENGINE *toadd = ENGINE_padlock();
-
- if (toadd == NULL)
- return;
- ENGINE_add(toadd);
- ENGINE_free(toadd);
- ERR_clear_error();
-#endif
-}
-
-#endif
-
-#ifdef COMPILE_HW_PADLOCK
-/* We do these includes here to avoid header problems on platforms that
- do not have the VIA padlock anyway... */
-#include <stdlib.h>
-#if defined(__GNUC__)
-# ifndef alloca
-# define alloca(s) __builtin_alloca(s)
-# endif
-#endif
-
-/* Function for ENGINE detection and control */
-static int padlock_available(void);
-static int padlock_init(ENGINE *e);
-
-/* RNG Stuff */
-static RAND_METHOD padlock_rand;
-
-/* Cipher Stuff */
-#ifndef OPENSSL_NO_AES
-static int padlock_ciphers(ENGINE *e, const EVP_CIPHER **cipher, const int **nids, int nid);
-#endif
-
-/* Engine names */
-static const char *padlock_id = "padlock";
-static char padlock_name[100];
-
-/* Available features */
-static int padlock_use_ace = 0; /* Advanced Cryptography Engine */
-static int padlock_use_rng = 0; /* Random Number Generator */
-#ifndef OPENSSL_NO_AES
-static int padlock_aes_align_required = 1;
-#endif
-
-/* ===== Engine "management" functions ===== */
-
-/* Prepare the ENGINE structure for registration */
-static int
-padlock_bind_helper(ENGINE *e)
-{
- /* Check available features */
- padlock_available();
-
- /*
- * RNG is currently disabled for reasons discussed in commentary just
- * before padlock_rand_bytes function.
- */
- padlock_use_rng = 0;
-
- /* Generate a nice engine name with available features */
- (void) snprintf(padlock_name, sizeof(padlock_name),
- "VIA PadLock (%s, %s)",
- padlock_use_rng ? "RNG" : "no-RNG",
- padlock_use_ace ? "ACE" : "no-ACE");
-
- /* Register everything or return with an error */
- if (!ENGINE_set_id(e, padlock_id) ||
- !ENGINE_set_name(e, padlock_name) ||
- !ENGINE_set_init_function(e, padlock_init) ||
-#ifndef OPENSSL_NO_AES
- (padlock_use_ace && !ENGINE_set_ciphers (e, padlock_ciphers)) ||
-#endif
- (padlock_use_rng && !ENGINE_set_RAND (e, &padlock_rand))) {
- return 0;
- }
-
- /* Everything looks good */
- return 1;
-}
-
-#ifdef OPENSSL_NO_DYNAMIC_ENGINE
-
-/* Constructor */
-static ENGINE *
-ENGINE_padlock(void)
-{
- ENGINE *eng = ENGINE_new();
-
- if (eng == NULL)
- return NULL;
-
- if (!padlock_bind_helper(eng)) {
- ENGINE_free(eng);
- return NULL;
- }
-
- return eng;
-}
-
-#endif
-
-/* Check availability of the engine */
-static int
-padlock_init(ENGINE *e)
-{
- return (padlock_use_rng || padlock_use_ace);
-}
-
-/* This stuff is needed if this ENGINE is being compiled into a self-contained
- * shared-library.
- */
-#ifdef DYNAMIC_ENGINE
-static int
-padlock_bind_fn(ENGINE *e, const char *id)
-{
- if (id && (strcmp(id, padlock_id) != 0)) {
- return 0;
- }
-
- if (!padlock_bind_helper(e)) {
- return 0;
- }
-
- return 1;
-}
-
-IMPLEMENT_DYNAMIC_CHECK_FN()
-IMPLEMENT_DYNAMIC_BIND_FN (padlock_bind_fn)
-#endif /* DYNAMIC_ENGINE */
-
-/* ===== Here comes the "real" engine ===== */
-
-#ifndef OPENSSL_NO_AES
-/* Some AES-related constants */
-#define AES_BLOCK_SIZE 16
-#define AES_KEY_SIZE_128 16
-#define AES_KEY_SIZE_192 24
-#define AES_KEY_SIZE_256 32
-
-/* Here we store the status information relevant to the
- current context. */
-/* BIG FAT WARNING:
- * Inline assembler in PADLOCK_XCRYPT_ASM()
- * depends on the order of items in this structure.
- * Don't blindly modify, reorder, etc!
- */
-struct padlock_cipher_data {
- unsigned char iv[AES_BLOCK_SIZE]; /* Initialization vector */
- union {
- unsigned int pad[4];
- struct {
- int rounds : 4;
- int dgst : 1; /* n/a in C3 */
- int align : 1; /* n/a in C3 */
- int ciphr : 1; /* n/a in C3 */
- unsigned int keygen : 1;
- int interm : 1;
- unsigned int encdec : 1;
- int ksize : 2;
- } b;
- } cword; /* Control word */
- AES_KEY ks; /* Encryption key */
-};
-
-/*
- * Essentially this variable belongs in thread local storage.
- * Having this variable global on the other hand can only cause
- * few bogus key reloads [if any at all on single-CPU system],
- * so we accept the penalty...
- */
-static volatile struct padlock_cipher_data *padlock_saved_context;
-#endif
-
-/*
- * =======================================================
- * Inline assembler section(s).
- * =======================================================
- * Order of arguments is chosen to facilitate Windows port
- * using __fastcall calling convention. If you wish to add
- * more routines, keep in mind that first __fastcall
- * argument is passed in %ecx and second - in %edx.
- * =======================================================
- */
-#if defined(__GNUC__) && __GNUC__>=2
-/*
- * As for excessive "push %ebx"/"pop %ebx" found all over.
- * When generating position-independent code GCC won't let
- * us use "b" in assembler templates nor even respect "ebx"
- * in "clobber description." Therefore the trouble...
- */
-
-/* Helper function - check if a CPUID instruction
- is available on this CPU */
-static int
-padlock_insn_cpuid_available(void)
-{
- int result = -1;
-
- /* We're checking if the bit #21 of EFLAGS
- can be toggled. If yes = CPUID is available. */
- asm volatile (
- "pushf\n"
- "popl %%eax\n"
- "xorl $0x200000, %%eax\n"
- "movl %%eax, %%ecx\n"
- "andl $0x200000, %%ecx\n"
- "pushl %%eax\n"
- "popf\n"
- "pushf\n"
- "popl %%eax\n"
- "andl $0x200000, %%eax\n"
- "xorl %%eax, %%ecx\n"
- "movl %%ecx, %0\n"
- : "=r" (result) : : "eax", "ecx");
-
- return (result == 0);
-}
-
-/* Load supported features of the CPU to see if
- the PadLock is available. */
-static int
-padlock_available(void)
-{
- char vendor_string[16];
- unsigned int eax, edx;
-
- /* First check if the CPUID instruction is available at all... */
- if (! padlock_insn_cpuid_available())
- return 0;
-
- /* Are we running on the Centaur (VIA) CPU? */
- eax = 0x00000000;
- vendor_string[12] = 0;
- asm volatile (
- "pushl %%ebx\n"
- "cpuid\n"
- "movl %%ebx,(%%edi)\n"
- "movl %%edx,4(%%edi)\n"
- "movl %%ecx,8(%%edi)\n"
- "popl %%ebx"
- : "+a"(eax) : "D"(vendor_string) : "ecx", "edx");
- if (strcmp(vendor_string, "CentaurHauls") != 0)
- return 0;
-
- /* Check for Centaur Extended Feature Flags presence */
- eax = 0xC0000000;
- asm volatile ("pushl %%ebx; cpuid; popl %%ebx"
- : "+a"(eax) : : "ecx", "edx");
- if (eax < 0xC0000001)
- return 0;
-
- /* Read the Centaur Extended Feature Flags */
- eax = 0xC0000001;
- asm volatile ("pushl %%ebx; cpuid; popl %%ebx"
- : "+a"(eax), "=d"(edx) : : "ecx");
-
- /* Fill up some flags */
- padlock_use_ace = ((edx & (0x3 << 6)) == (0x3 << 6));
- padlock_use_rng = ((edx & (0x3 << 2)) == (0x3 << 2));
-
- return padlock_use_ace + padlock_use_rng;
-}
-
-#ifndef OPENSSL_NO_AES
-/* Our own htonl()/ntohl() */
-static inline void
-padlock_bswapl(AES_KEY *ks)
-{
- size_t i = sizeof(ks->rd_key)/sizeof(ks->rd_key[0]);
- unsigned int *key = ks->rd_key;
-
- while (i--) {
- asm volatile ("bswapl %0" : "+r"(*key));
- key++;
- }
-}
-#endif
-
-/* Force key reload from memory to the CPU microcode.
- Loading EFLAGS from the stack clears EFLAGS[30]
- which does the trick. */
-static inline void
-padlock_reload_key(void)
-{
- asm volatile ("pushfl; popfl");
-}
-
-#ifndef OPENSSL_NO_AES
-/*
- * This is heuristic key context tracing. At first one
- * believes that one should use atomic swap instructions,
- * but it's not actually necessary. Point is that if
- * padlock_saved_context was changed by another thread
- * after we've read it and before we compare it with cdata,
- * our key *shall* be reloaded upon thread context switch
- * and we are therefore set in either case...
- */
-static inline void
-padlock_verify_context(struct padlock_cipher_data *cdata)
-{
- asm volatile (
- "pushfl\n"
- " btl $30,(%%esp)\n"
- " jnc 1f\n"
- " cmpl %2,%1\n"
- " je 1f\n"
- " popfl\n"
- " subl $4,%%esp\n"
- "1: addl $4,%%esp\n"
- " movl %2,%0"
- :"+m"(padlock_saved_context)
- : "r"(padlock_saved_context), "r"(cdata) : "cc");
-}
-
-/* Template for padlock_xcrypt_* modes */
-/* BIG FAT WARNING:
- * The offsets used with 'leal' instructions
- * describe items of the 'padlock_cipher_data'
- * structure.
- */
-#define PADLOCK_XCRYPT_ASM(name,rep_xcrypt) \
-static inline void *name(size_t cnt, \
- struct padlock_cipher_data *cdata, \
- void *out, const void *inp) \
-{ void *iv; \
- asm volatile ( "pushl %%ebx\n" \
- " leal 16(%0),%%edx\n" \
- " leal 32(%0),%%ebx\n" \
- rep_xcrypt "\n" \
- " popl %%ebx" \
- : "=a"(iv), "=c"(cnt), "=D"(out), "=S"(inp) \
- : "0"(cdata), "1"(cnt), "2"(out), "3"(inp) \
- : "edx", "cc", "memory"); \
- return iv; \
-}
-
-/* Generate all functions with appropriate opcodes */
-PADLOCK_XCRYPT_ASM(padlock_xcrypt_ecb, ".byte 0xf3,0x0f,0xa7,0xc8") /* rep xcryptecb */
-PADLOCK_XCRYPT_ASM(padlock_xcrypt_cbc, ".byte 0xf3,0x0f,0xa7,0xd0") /* rep xcryptcbc */
-PADLOCK_XCRYPT_ASM(padlock_xcrypt_cfb, ".byte 0xf3,0x0f,0xa7,0xe0") /* rep xcryptcfb */
-PADLOCK_XCRYPT_ASM(padlock_xcrypt_ofb, ".byte 0xf3,0x0f,0xa7,0xe8") /* rep xcryptofb */
-#endif
-
-/* The RNG call itself */
-static inline unsigned int
-padlock_xstore(void *addr, unsigned int edx_in)
-{
- unsigned int eax_out;
-
- asm volatile (".byte 0x0f,0xa7,0xc0" /* xstore */
- : "=a"(eax_out),"=m"(*(unsigned *)addr)
- : "D"(addr), "d" (edx_in)
- );
-
- return eax_out;
-}
-
-/* Why not inline 'rep movsd'? I failed to find information on what
- * value in Direction Flag one can expect and consequently have to
- * apply "better-safe-than-sorry" approach and assume "undefined."
- * I could explicitly clear it and restore the original value upon
- * return from padlock_aes_cipher, but it's presumably too much
- * trouble for too little gain...
- *
- * In case you wonder 'rep xcrypt*' instructions above are *not*
- * affected by the Direction Flag and pointers advance toward
- * larger addresses unconditionally.
- */
-static inline unsigned char *
-padlock_memcpy(void *dst, const void *src, size_t n)
-{
- long *d = dst;
- const long *s = src;
-
- n /= sizeof(*d);
- do { *d++ = *s++;
- } while (--n);
-
- return dst;
-}
-#endif
-
-/* ===== AES encryption/decryption ===== */
-#ifndef OPENSSL_NO_AES
-
-#if defined(NID_aes_128_cfb128) && ! defined (NID_aes_128_cfb)
-#define NID_aes_128_cfb NID_aes_128_cfb128
-#endif
-
-#if defined(NID_aes_128_ofb128) && ! defined (NID_aes_128_ofb)
-#define NID_aes_128_ofb NID_aes_128_ofb128
-#endif
-
-#if defined(NID_aes_192_cfb128) && ! defined (NID_aes_192_cfb)
-#define NID_aes_192_cfb NID_aes_192_cfb128
-#endif
-
-#if defined(NID_aes_192_ofb128) && ! defined (NID_aes_192_ofb)
-#define NID_aes_192_ofb NID_aes_192_ofb128
-#endif
-
-#if defined(NID_aes_256_cfb128) && ! defined (NID_aes_256_cfb)
-#define NID_aes_256_cfb NID_aes_256_cfb128
-#endif
-
-#if defined(NID_aes_256_ofb128) && ! defined (NID_aes_256_ofb)
-#define NID_aes_256_ofb NID_aes_256_ofb128
-#endif
-
-/* List of supported ciphers. */
-static int padlock_cipher_nids[] = {
- NID_aes_128_ecb,
- NID_aes_128_cbc,
- NID_aes_128_cfb,
- NID_aes_128_ofb,
-
- NID_aes_192_ecb,
- NID_aes_192_cbc,
- NID_aes_192_cfb,
- NID_aes_192_ofb,
-
- NID_aes_256_ecb,
- NID_aes_256_cbc,
- NID_aes_256_cfb,
- NID_aes_256_ofb,
-};
-static int padlock_cipher_nids_num = (sizeof(padlock_cipher_nids)/
-sizeof(padlock_cipher_nids[0]));
-
-/* Function prototypes ... */
-static int padlock_aes_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
- const unsigned char *iv, int enc);
-static int padlock_aes_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
- const unsigned char *in, size_t nbytes);
-
-#define NEAREST_ALIGNED(ptr) ( (unsigned char *)(ptr) + \
- ( (0x10 - ((size_t)(ptr) & 0x0F)) & 0x0F ) )
-#define ALIGNED_CIPHER_DATA(ctx) ((struct padlock_cipher_data *)\
- NEAREST_ALIGNED(ctx->cipher_data))
-
-#define EVP_CIPHER_block_size_ECB AES_BLOCK_SIZE
-#define EVP_CIPHER_block_size_CBC AES_BLOCK_SIZE
-#define EVP_CIPHER_block_size_OFB 1
-#define EVP_CIPHER_block_size_CFB 1
-
-/* Declaring so many ciphers by hand would be a pain.
- Instead introduce a bit of preprocessor magic :-) */
-#define DECLARE_AES_EVP(ksize,lmode,umode) \
-static const EVP_CIPHER padlock_aes_##ksize##_##lmode = { \
- NID_aes_##ksize##_##lmode, \
- EVP_CIPHER_block_size_##umode, \
- AES_KEY_SIZE_##ksize, \
- AES_BLOCK_SIZE, \
- 0 | EVP_CIPH_##umode##_MODE, \
- padlock_aes_init_key, \
- padlock_aes_cipher, \
- NULL, \
- sizeof(struct padlock_cipher_data) + 16, \
- EVP_CIPHER_set_asn1_iv, \
- EVP_CIPHER_get_asn1_iv, \
- NULL, \
- NULL \
-}
-
-DECLARE_AES_EVP(128, ecb, ECB);
-DECLARE_AES_EVP(128, cbc, CBC);
-DECLARE_AES_EVP(128, cfb, CFB);
-DECLARE_AES_EVP(128, ofb, OFB);
-
-DECLARE_AES_EVP(192, ecb, ECB);
-DECLARE_AES_EVP(192, cbc, CBC);
-DECLARE_AES_EVP(192, cfb, CFB);
-DECLARE_AES_EVP(192, ofb, OFB);
-
-DECLARE_AES_EVP(256, ecb, ECB);
-DECLARE_AES_EVP(256, cbc, CBC);
-DECLARE_AES_EVP(256, cfb, CFB);
-DECLARE_AES_EVP(256, ofb, OFB);
-
-static int
-padlock_ciphers(ENGINE *e, const EVP_CIPHER **cipher, const int **nids, int nid)
-{
- /* No specific cipher => return a list of supported nids ... */
- if (!cipher) {
- *nids = padlock_cipher_nids;
- return padlock_cipher_nids_num;
- }
-
- /* ... or the requested "cipher" otherwise */
- switch (nid) {
- case NID_aes_128_ecb:
- *cipher = &padlock_aes_128_ecb;
- break;
- case NID_aes_128_cbc:
- *cipher = &padlock_aes_128_cbc;
- break;
- case NID_aes_128_cfb:
- *cipher = &padlock_aes_128_cfb;
- break;
- case NID_aes_128_ofb:
- *cipher = &padlock_aes_128_ofb;
- break;
- case NID_aes_192_ecb:
- *cipher = &padlock_aes_192_ecb;
- break;
- case NID_aes_192_cbc:
- *cipher = &padlock_aes_192_cbc;
- break;
- case NID_aes_192_cfb:
- *cipher = &padlock_aes_192_cfb;
- break;
- case NID_aes_192_ofb:
- *cipher = &padlock_aes_192_ofb;
- break;
- case NID_aes_256_ecb:
- *cipher = &padlock_aes_256_ecb;
- break;
- case NID_aes_256_cbc:
- *cipher = &padlock_aes_256_cbc;
- break;
- case NID_aes_256_cfb:
- *cipher = &padlock_aes_256_cfb;
- break;
- case NID_aes_256_ofb:
- *cipher = &padlock_aes_256_ofb;
- break;
- default:
- /* Sorry, we don't support this NID */
- *cipher = NULL;
- return 0;
- }
-
- return 1;
-}
-
-/* Prepare the encryption key for PadLock usage */
-static int
-padlock_aes_init_key (EVP_CIPHER_CTX *ctx, const unsigned char *key,
- const unsigned char *iv, int enc)
-{
- struct padlock_cipher_data *cdata;
- int key_len = EVP_CIPHER_CTX_key_length(ctx) * 8;
-
- if (key == NULL)
- return 0; /* ERROR */
-
- cdata = ALIGNED_CIPHER_DATA(ctx);
- memset(cdata, 0, sizeof(struct padlock_cipher_data));
-
- /* Prepare Control word. */
- if (EVP_CIPHER_CTX_mode(ctx) == EVP_CIPH_OFB_MODE)
- cdata->cword.b.encdec = 0;
- else
- cdata->cword.b.encdec = (ctx->encrypt == 0);
- cdata->cword.b.rounds = 10 + (key_len - 128) / 32;
- cdata->cword.b.ksize = (key_len - 128) / 64;
-
- switch (key_len) {
- case 128:
- /* PadLock can generate an extended key for
- AES128 in hardware */
- memcpy(cdata->ks.rd_key, key, AES_KEY_SIZE_128);
- cdata->cword.b.keygen = 0;
- break;
-
- case 192:
- case 256:
- /* Generate an extended AES key in software.
- Needed for AES192/AES256 */
- /* Well, the above applies to Stepping 8 CPUs
- and is listed as hardware errata. They most
- likely will fix it at some point and then
- a check for stepping would be due here. */
- if (EVP_CIPHER_CTX_mode(ctx) == EVP_CIPH_CFB_MODE ||
- EVP_CIPHER_CTX_mode(ctx) == EVP_CIPH_OFB_MODE ||
- enc)
- AES_set_encrypt_key(key, key_len, &cdata->ks);
- else
- AES_set_decrypt_key(key, key_len, &cdata->ks);
-#ifndef AES_ASM
- /* OpenSSL C functions use byte-swapped extended key. */
- padlock_bswapl(&cdata->ks);
-#endif
- cdata->cword.b.keygen = 1;
- break;
-
- default:
- /* ERROR */
- return 0;
- }
-
- /*
- * This is done to cover for cases when user reuses the
- * context for new key. The catch is that if we don't do
- * this, padlock_eas_cipher might proceed with old key...
- */
- padlock_reload_key ();
-
- return 1;
-}
-
-/*
- * Simplified version of padlock_aes_cipher() used when
- * 1) both input and output buffers are at aligned addresses.
- * or when
- * 2) running on a newer CPU that doesn't require aligned buffers.
- */
-static int
-padlock_aes_cipher_omnivorous(EVP_CIPHER_CTX *ctx, unsigned char *out_arg,
- const unsigned char *in_arg, size_t nbytes)
-{
- struct padlock_cipher_data *cdata;
- void *iv;
-
- cdata = ALIGNED_CIPHER_DATA(ctx);
- padlock_verify_context(cdata);
-
- switch (EVP_CIPHER_CTX_mode(ctx)) {
- case EVP_CIPH_ECB_MODE:
- padlock_xcrypt_ecb(nbytes / AES_BLOCK_SIZE, cdata,
- out_arg, in_arg);
- break;
-
- case EVP_CIPH_CBC_MODE:
- memcpy(cdata->iv, ctx->iv, AES_BLOCK_SIZE);
- iv = padlock_xcrypt_cbc(nbytes / AES_BLOCK_SIZE, cdata,
- out_arg, in_arg);
- memcpy(ctx->iv, iv, AES_BLOCK_SIZE);
- break;
-
- case EVP_CIPH_CFB_MODE:
- memcpy(cdata->iv, ctx->iv, AES_BLOCK_SIZE);
- iv = padlock_xcrypt_cfb(nbytes / AES_BLOCK_SIZE, cdata,
- out_arg, in_arg);
- memcpy(ctx->iv, iv, AES_BLOCK_SIZE);
- break;
-
- case EVP_CIPH_OFB_MODE:
- memcpy(cdata->iv, ctx->iv, AES_BLOCK_SIZE);
- padlock_xcrypt_ofb(nbytes / AES_BLOCK_SIZE, cdata,
- out_arg, in_arg);
- memcpy(ctx->iv, cdata->iv, AES_BLOCK_SIZE);
- break;
-
- default:
- return 0;
- }
-
- memset(cdata->iv, 0, AES_BLOCK_SIZE);
-
- return 1;
-}
-
-#ifndef PADLOCK_CHUNK
-# define PADLOCK_CHUNK 512 /* Must be a power of 2 larger than 16 */
-#endif
-#if PADLOCK_CHUNK<16 || PADLOCK_CHUNK&(PADLOCK_CHUNK-1)
-# error "insane PADLOCK_CHUNK..."
-#endif
-
-/* Re-align the arguments to 16-Bytes boundaries and run the
- encryption function itself. This function is not AES-specific. */
-static int
-padlock_aes_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out_arg,
- const unsigned char *in_arg, size_t nbytes)
-{
- struct padlock_cipher_data *cdata;
- const void *inp;
- unsigned char *out;
- void *iv;
- int inp_misaligned, out_misaligned, realign_in_loop;
- size_t chunk, allocated = 0;
-
- /* ctx->num is maintained in byte-oriented modes,
- such as CFB and OFB... */
- if ((chunk = ctx->num)) {
- /* borrow chunk variable */
- unsigned char *ivp = ctx->iv;
-
- switch (EVP_CIPHER_CTX_mode(ctx)) {
- case EVP_CIPH_CFB_MODE:
- if (chunk >= AES_BLOCK_SIZE)
- return 0; /* bogus value */
-
- if (ctx->encrypt)
- while (chunk < AES_BLOCK_SIZE && nbytes != 0) {
- ivp[chunk] = *(out_arg++) = *(in_arg++) ^ ivp[chunk];
- chunk++, nbytes--;
- }
- else
- while (chunk < AES_BLOCK_SIZE && nbytes != 0) {
- unsigned char c = *(in_arg++);
- *(out_arg++) = c ^ ivp[chunk];
- ivp[chunk++] = c, nbytes--;
- }
-
- ctx->num = chunk % AES_BLOCK_SIZE;
- break;
- case EVP_CIPH_OFB_MODE:
- if (chunk >= AES_BLOCK_SIZE)
- return 0; /* bogus value */
-
- while (chunk < AES_BLOCK_SIZE && nbytes != 0) {
- *(out_arg++) = *(in_arg++) ^ ivp[chunk];
- chunk++, nbytes--;
- }
-
- ctx->num = chunk % AES_BLOCK_SIZE;
- break;
- }
- }
-
- if (nbytes == 0)
- return 1;
-#if 0
- if (nbytes % AES_BLOCK_SIZE)
- return 0; /* are we expected to do tail processing? */
-#else
- /* nbytes is always multiple of AES_BLOCK_SIZE in ECB and CBC
- modes and arbitrary value in byte-oriented modes, such as
- CFB and OFB... */
-#endif
-
- /* VIA promises CPUs that won't require alignment in the future.
- For now padlock_aes_align_required is initialized to 1 and
- the condition is never met... */
- /* C7 core is capable to manage unaligned input in non-ECB[!]
- mode, but performance penalties appear to be approximately
- same as for software alignment below or ~3x. They promise to
- improve it in the future, but for now we can just as well
- pretend that it can only handle aligned input... */
- if (!padlock_aes_align_required && (nbytes % AES_BLOCK_SIZE) == 0)
- return padlock_aes_cipher_omnivorous(ctx, out_arg, in_arg,
- nbytes);
-
- inp_misaligned = (((size_t)in_arg) & 0x0F);
- out_misaligned = (((size_t)out_arg) & 0x0F);
-
- /* Note that even if output is aligned and input not,
- * I still prefer to loop instead of copy the whole
- * input and then encrypt in one stroke. This is done
- * in order to improve L1 cache utilization... */
- realign_in_loop = out_misaligned|inp_misaligned;
-
- if (!realign_in_loop && (nbytes % AES_BLOCK_SIZE) == 0)
- return padlock_aes_cipher_omnivorous(ctx, out_arg, in_arg,
- nbytes);
-
- /* this takes one "if" out of the loops */
- chunk = nbytes;
- chunk %= PADLOCK_CHUNK;
- if (chunk == 0)
- chunk = PADLOCK_CHUNK;
-
- if (out_misaligned) {
- /* optimize for small input */
- allocated = (chunk < nbytes ? PADLOCK_CHUNK : nbytes);
- out = alloca(0x10 + allocated);
- out = NEAREST_ALIGNED(out);
- } else
- out = out_arg;
-
- cdata = ALIGNED_CIPHER_DATA(ctx);
- padlock_verify_context(cdata);
-
- switch (EVP_CIPHER_CTX_mode(ctx)) {
- case EVP_CIPH_ECB_MODE:
- do {
- if (inp_misaligned)
- inp = padlock_memcpy(out, in_arg, chunk);
- else
- inp = in_arg;
- in_arg += chunk;
-
- padlock_xcrypt_ecb(chunk / AES_BLOCK_SIZE, cdata,
- out, inp);
-
- if (out_misaligned)
- out_arg = padlock_memcpy(out_arg, out, chunk) +
- chunk;
- else
- out = out_arg += chunk;
-
- nbytes -= chunk;
- chunk = PADLOCK_CHUNK;
- } while (nbytes);
- break;
-
- case EVP_CIPH_CBC_MODE:
- memcpy(cdata->iv, ctx->iv, AES_BLOCK_SIZE);
- goto cbc_shortcut;
- do {
- if (iv != cdata->iv)
- memcpy(cdata->iv, iv, AES_BLOCK_SIZE);
- chunk = PADLOCK_CHUNK;
- cbc_shortcut: /* optimize for small input */
- if (inp_misaligned)
- inp = padlock_memcpy(out, in_arg, chunk);
- else
- inp = in_arg;
- in_arg += chunk;
-
- iv = padlock_xcrypt_cbc(chunk / AES_BLOCK_SIZE, cdata,
- out, inp);
-
- if (out_misaligned)
- out_arg = padlock_memcpy(out_arg, out, chunk) +
- chunk;
- else
- out = out_arg += chunk;
- } while (nbytes -= chunk);
- memcpy(ctx->iv, iv, AES_BLOCK_SIZE);
- break;
-
- case EVP_CIPH_CFB_MODE:
- memcpy (iv = cdata->iv, ctx->iv, AES_BLOCK_SIZE);
- chunk &= ~(AES_BLOCK_SIZE - 1);
- if (chunk)
- goto cfb_shortcut;
- else
- goto cfb_skiploop;
- do {
- if (iv != cdata->iv)
- memcpy(cdata->iv, iv, AES_BLOCK_SIZE);
- chunk = PADLOCK_CHUNK;
- cfb_shortcut: /* optimize for small input */
- if (inp_misaligned)
- inp = padlock_memcpy(out, in_arg, chunk);
- else
- inp = in_arg;
- in_arg += chunk;
-
- iv = padlock_xcrypt_cfb(chunk / AES_BLOCK_SIZE, cdata,
- out, inp);
-
- if (out_misaligned)
- out_arg = padlock_memcpy(out_arg, out, chunk) +
- chunk;
- else
- out = out_arg += chunk;
-
- nbytes -= chunk;
- } while (nbytes >= AES_BLOCK_SIZE);
-
-cfb_skiploop:
- if (nbytes) {
- unsigned char *ivp = cdata->iv;
-
- if (iv != ivp) {
- memcpy(ivp, iv, AES_BLOCK_SIZE);
- iv = ivp;
- }
- ctx->num = nbytes;
- if (cdata->cword.b.encdec) {
- cdata->cword.b.encdec = 0;
- padlock_reload_key();
- padlock_xcrypt_ecb(1, cdata, ivp, ivp);
- cdata->cword.b.encdec = 1;
- padlock_reload_key();
- while (nbytes) {
- unsigned char c = *(in_arg++);
- *(out_arg++) = c ^ *ivp;
- *(ivp++) = c, nbytes--;
- }
- } else {
- padlock_reload_key();
- padlock_xcrypt_ecb(1, cdata, ivp, ivp);
- padlock_reload_key();
- while (nbytes) {
- *ivp = *(out_arg++) = *(in_arg++) ^ *ivp;
- ivp++, nbytes--;
- }
- }
- }
-
- memcpy(ctx->iv, iv, AES_BLOCK_SIZE);
- break;
-
- case EVP_CIPH_OFB_MODE:
- memcpy(cdata->iv, ctx->iv, AES_BLOCK_SIZE);
- chunk &= ~(AES_BLOCK_SIZE - 1);
- if (chunk) do {
- if (inp_misaligned)
- inp = padlock_memcpy(out, in_arg, chunk);
- else
- inp = in_arg;
- in_arg += chunk;
-
- padlock_xcrypt_ofb(chunk / AES_BLOCK_SIZE, cdata,
- out, inp);
-
- if (out_misaligned)
- out_arg = padlock_memcpy(out_arg, out, chunk) +
- chunk;
- else
- out = out_arg += chunk;
-
- nbytes -= chunk;
- chunk = PADLOCK_CHUNK;
- } while (nbytes >= AES_BLOCK_SIZE);
-
- if (nbytes) {
- unsigned char *ivp = cdata->iv;
-
- ctx->num = nbytes;
- padlock_reload_key(); /* empirically found */
- padlock_xcrypt_ecb(1, cdata, ivp, ivp);
- padlock_reload_key(); /* empirically found */
- while (nbytes) {
- *(out_arg++) = *(in_arg++) ^ *ivp;
- ivp++, nbytes--;
- }
- }
-
- memcpy(ctx->iv, cdata->iv, AES_BLOCK_SIZE);
- break;
-
- default:
- return 0;
- }
-
- /* Clean the realign buffer if it was used */
- if (out_misaligned) {
- volatile unsigned long *p = (void *)out;
- size_t n = allocated/sizeof(*p);
- while (n--)
- *p++ = 0;
- }
-
- memset(cdata->iv, 0, AES_BLOCK_SIZE);
-
- return 1;
-}
-
-#endif /* OPENSSL_NO_AES */
-
-/* ===== Random Number Generator ===== */
-/*
- * This code is not engaged. The reason is that it does not comply
- * with recommendations for VIA RNG usage for secure applications
- * (posted at http://www.via.com.tw/en/viac3/c3.jsp) nor does it
- * provide meaningful error control...
- */
-/* Wrapper that provides an interface between the API and
- the raw PadLock RNG */
-static int
-padlock_rand_bytes(unsigned char *output, int count)
-{
- unsigned int eax, buf;
-
- while (count >= 8) {
- eax = padlock_xstore(output, 0);
- if (!(eax & (1 << 6)))
- return 0; /* RNG disabled */
- /* this ---vv--- covers DC bias, Raw Bits and String Filter */
- if (eax & (0x1F << 10))
- return 0;
- if ((eax & 0x1F) == 0)
- continue; /* no data, retry... */
- if ((eax & 0x1F) != 8)
- return 0; /* fatal failure... */
- output += 8;
- count -= 8;
- }
- while (count > 0) {
- eax = padlock_xstore(&buf, 3);
- if (!(eax & (1 << 6)))
- return 0; /* RNG disabled */
- /* this ---vv--- covers DC bias, Raw Bits and String Filter */
- if (eax & (0x1F << 10))
- return 0;
- if ((eax & 0x1F) == 0)
- continue; /* no data, retry... */
- if ((eax & 0x1F) != 1)
- return 0; /* fatal failure... */
- *output++ = (unsigned char)buf;
- count--;
- }
- *(volatile unsigned int *)&buf = 0;
-
- return 1;
-}
-
-/* Dummy but necessary function */
-static int
-padlock_rand_status(void)
-{
- return 1;
-}
-
-/* Prepare structure for registration */
-static RAND_METHOD padlock_rand = {
- .bytes = padlock_rand_bytes,
- .pseudorand = padlock_rand_bytes,
- .status = padlock_rand_status
-};
-
-#else /* !COMPILE_HW_PADLOCK */
-#ifndef OPENSSL_NO_DYNAMIC_ENGINE
-extern int bind_engine(ENGINE *e, const char *id, const dynamic_fns *fns);
-extern int
-bind_engine(ENGINE *e, const char *id, const dynamic_fns *fns) {
- return 0;
-}
-IMPLEMENT_DYNAMIC_CHECK_FN()
-#endif
-#endif /* COMPILE_HW_PADLOCK */
-
-#endif /* !OPENSSL_NO_HW_PADLOCK */
-#endif /* !OPENSSL_NO_HW */
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