1 /** 2 * \file padlock.h 3 * 4 * \brief VIA PadLock ACE for HW encryption/decryption supported by some 5 * processors 6 * 7 * \warning These functions are only for internal use by other library 8 * functions; you must not call them directly. 9 */ 10 /* 11 * Copyright The Mbed TLS Contributors 12 * SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later 13 */ 14 #ifndef MBEDTLS_PADLOCK_H 15 #define MBEDTLS_PADLOCK_H 16 17 #include "mbedtls/build_info.h" 18 19 #include "mbedtls/aes.h" 20 21 #define MBEDTLS_ERR_PADLOCK_DATA_MISALIGNED -0x0030 /**< Input data should be aligned. */ 22 23 #if defined(__has_feature) 24 #if __has_feature(address_sanitizer) 25 #define MBEDTLS_HAVE_ASAN 26 #endif 27 #endif 28 29 /* 30 * - `padlock` is implements with GNUC assembly for x86 target. 31 * - Some versions of ASan result in errors about not enough registers. 32 */ 33 #if defined(MBEDTLS_PADLOCK_C) && \ 34 defined(__GNUC__) && defined(MBEDTLS_ARCH_IS_X86) && \ 35 defined(MBEDTLS_HAVE_ASM) && \ 36 !defined(MBEDTLS_HAVE_ASAN) 37 38 #define MBEDTLS_VIA_PADLOCK_HAVE_CODE 39 40 #include <stdint.h> 41 42 #define MBEDTLS_PADLOCK_RNG 0x000C 43 #define MBEDTLS_PADLOCK_ACE 0x00C0 44 #define MBEDTLS_PADLOCK_PHE 0x0C00 45 #define MBEDTLS_PADLOCK_PMM 0x3000 46 47 #define MBEDTLS_PADLOCK_ALIGN16(x) (uint32_t *) (16 + ((int32_t) (x) & ~15)) 48 49 #ifdef __cplusplus 50 extern "C" { 51 #endif 52 53 /** 54 * \brief Internal PadLock detection routine 55 * 56 * \note This function is only for internal use by other library 57 * functions; you must not call it directly. 58 * 59 * \param feature The feature to detect 60 * 61 * \return non-zero if CPU has support for the feature, 0 otherwise 62 */ 63 int mbedtls_padlock_has_support(int feature); 64 65 /** 66 * \brief Internal PadLock AES-ECB block en(de)cryption 67 * 68 * \note This function is only for internal use by other library 69 * functions; you must not call it directly. 70 * 71 * \param ctx AES context 72 * \param mode MBEDTLS_AES_ENCRYPT or MBEDTLS_AES_DECRYPT 73 * \param input 16-byte input block 74 * \param output 16-byte output block 75 * 76 * \return 0 if success, 1 if operation failed 77 */ 78 int mbedtls_padlock_xcryptecb(mbedtls_aes_context *ctx, 79 int mode, 80 const unsigned char input[16], 81 unsigned char output[16]); 82 83 /** 84 * \brief Internal PadLock AES-CBC buffer en(de)cryption 85 * 86 * \note This function is only for internal use by other library 87 * functions; you must not call it directly. 88 * 89 * \param ctx AES context 90 * \param mode MBEDTLS_AES_ENCRYPT or MBEDTLS_AES_DECRYPT 91 * \param length length of the input data 92 * \param iv initialization vector (updated after use) 93 * \param input buffer holding the input data 94 * \param output buffer holding the output data 95 * 96 * \return 0 if success, 1 if operation failed 97 */ 98 int mbedtls_padlock_xcryptcbc(mbedtls_aes_context *ctx, 99 int mode, 100 size_t length, 101 unsigned char iv[16], 102 const unsigned char *input, 103 unsigned char *output); 104 105 #ifdef __cplusplus 106 } 107 #endif 108 109 #endif /* HAVE_X86 */ 110 111 #endif /* padlock.h */ 112
