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/**
* \file padlock.h
*
* \brief VIA PadLock ACE for HW encryption/decryption supported by some
* processors
*
* \warning These functions are only for internal use by other library
* functions; you must not call them directly.
*/
/*
* Copyright The Mbed TLS Contributors
* SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
*/
#ifndef MBEDTLS_PADLOCK_H
#define MBEDTLS_PADLOCK_H
#include "mbedtls/build_info.h"
#include "mbedtls/aes.h"
#define MBEDTLS_ERR_PADLOCK_DATA_MISALIGNED -0x0030 /**< Input data should be aligned. */
#if defined(__has_feature)
#if __has_feature(address_sanitizer)
#define MBEDTLS_HAVE_ASAN
#endif
#endif
/*
* - `padlock` is implements with GNUC assembly for x86 target.
* - Some versions of ASan result in errors about not enough registers.
*/
#if defined(MBEDTLS_PADLOCK_C) && \
defined(__GNUC__) && defined(MBEDTLS_ARCH_IS_X86) && \
defined(MBEDTLS_HAVE_ASM) && \
!defined(MBEDTLS_HAVE_ASAN)
#define MBEDTLS_VIA_PADLOCK_HAVE_CODE
#include <stdint.h>
#define MBEDTLS_PADLOCK_RNG 0x000C
#define MBEDTLS_PADLOCK_ACE 0x00C0
#define MBEDTLS_PADLOCK_PHE 0x0C00
#define MBEDTLS_PADLOCK_PMM 0x3000
#define MBEDTLS_PADLOCK_ALIGN16(x) (uint32_t *) (16 + ((int32_t) (x) & ~15))
#ifdef __cplusplus
extern "C" {
#endif
/**
* \brief Internal PadLock detection routine
*
* \note This function is only for internal use by other library
* functions; you must not call it directly.
*
* \param feature The feature to detect
*
* \return non-zero if CPU has support for the feature, 0 otherwise
*/
int mbedtls_padlock_has_support(int feature);
/**
* \brief Internal PadLock AES-ECB block en(de)cryption
*
* \note This function is only for internal use by other library
* functions; you must not call it directly.
*
* \param ctx AES context
* \param mode MBEDTLS_AES_ENCRYPT or MBEDTLS_AES_DECRYPT
* \param input 16-byte input block
* \param output 16-byte output block
*
* \return 0 if success, 1 if operation failed
*/
int mbedtls_padlock_xcryptecb(mbedtls_aes_context *ctx,
int mode,
const unsigned char input[16],
unsigned char output[16]);
/**
* \brief Internal PadLock AES-CBC buffer en(de)cryption
*
* \note This function is only for internal use by other library
* functions; you must not call it directly.
*
* \param ctx AES context
* \param mode MBEDTLS_AES_ENCRYPT or MBEDTLS_AES_DECRYPT
* \param length length of the input data
* \param iv initialization vector (updated after use)
* \param input buffer holding the input data
* \param output buffer holding the output data
*
* \return 0 if success, 1 if operation failed
*/
int mbedtls_padlock_xcryptcbc(mbedtls_aes_context *ctx,
int mode,
size_t length,
unsigned char iv[16],
const unsigned char *input,
unsigned char *output);
#ifdef __cplusplus
}
#endif
#endif /* HAVE_X86 */
#endif /* padlock.h */
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