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