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 #if !defined(MBEDTLS_CONFIG_FILE) 18 #include "mbedtls/config.h" 19 #else 20 #include MBEDTLS_CONFIG_FILE 21 #endif 22 23 #include "mbedtls/aes.h" 24 25 /** Input data should be aligned. */ 26 #define MBEDTLS_ERR_PADLOCK_DATA_MISALIGNED -0x0030 27 28 #if defined(__has_feature) 29 #if __has_feature(address_sanitizer) 30 #define MBEDTLS_HAVE_ASAN 31 #endif 32 #endif 33 34 /* Some versions of ASan result in errors about not enough registers */ 35 #if defined(MBEDTLS_PADLOCK_C) && defined(MBEDTLS_HAVE_ASM) && \ 36 defined(__GNUC__) && defined(__i386__) && \ 37 !defined(MBEDTLS_HAVE_ASAN) 38 39 #define MBEDTLS_VIA_PADLOCK_HAVE_CODE 40 41 #ifndef MBEDTLS_HAVE_X86 42 #define MBEDTLS_HAVE_X86 43 #endif 44 45 #include <stdint.h> 46 47 #define MBEDTLS_PADLOCK_RNG 0x000C 48 #define MBEDTLS_PADLOCK_ACE 0x00C0 49 #define MBEDTLS_PADLOCK_PHE 0x0C00 50 #define MBEDTLS_PADLOCK_PMM 0x3000 51 52 #define MBEDTLS_PADLOCK_ALIGN16(x) (uint32_t *) (16 + ((int32_t) (x) & ~15)) 53 54 #ifdef __cplusplus 55 extern "C" { 56 #endif 57 58 /** 59 * \brief Internal PadLock detection routine 60 * 61 * \note This function is only for internal use by other library 62 * functions; you must not call it directly. 63 * 64 * \param feature The feature to detect 65 * 66 * \return non-zero if CPU has support for the feature, 0 otherwise 67 */ 68 int mbedtls_padlock_has_support(int feature); 69 70 /** 71 * \brief Internal PadLock AES-ECB block en(de)cryption 72 * 73 * \note This function is only for internal use by other library 74 * functions; you must not call it directly. 75 * 76 * \param ctx AES context 77 * \param mode MBEDTLS_AES_ENCRYPT or MBEDTLS_AES_DECRYPT 78 * \param input 16-byte input block 79 * \param output 16-byte output block 80 * 81 * \return 0 if success, 1 if operation failed 82 */ 83 int mbedtls_padlock_xcryptecb(mbedtls_aes_context *ctx, 84 int mode, 85 const unsigned char input[16], 86 unsigned char output[16]); 87 88 /** 89 * \brief Internal PadLock AES-CBC buffer en(de)cryption 90 * 91 * \note This function is only for internal use by other library 92 * functions; you must not call it directly. 93 * 94 * \param ctx AES context 95 * \param mode MBEDTLS_AES_ENCRYPT or MBEDTLS_AES_DECRYPT 96 * \param length length of the input data 97 * \param iv initialization vector (updated after use) 98 * \param input buffer holding the input data 99 * \param output buffer holding the output data 100 * 101 * \return 0 if success, 1 if operation failed 102 */ 103 int mbedtls_padlock_xcryptcbc(mbedtls_aes_context *ctx, 104 int mode, 105 size_t length, 106 unsigned char iv[16], 107 const unsigned char *input, 108 unsigned char *output); 109 110 #ifdef __cplusplus 111 } 112 #endif 113 114 #endif /* MBEDTLS_PADLOCK_C && MBEDTLS_HAVE_ASM && 115 __GNUC__ && __i386__ && !MBEDTLS_HAVE_ASAN */ 116 117 #endif /* padlock.h */ 118