| /* poly1305.h |
| * |
| * Copyright (C) 2006-2015 wolfSSL Inc. |
| * |
| * This file is part of wolfSSL. (formerly known as CyaSSL) |
| * |
| * wolfSSL is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * wolfSSL is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA |
| */ |
| |
| #ifndef WOLF_CRYPT_POLY1305_H |
| #define WOLF_CRYPT_POLY1305_H |
| |
| #include <wolfssl/wolfcrypt/types.h> |
| |
| #ifdef HAVE_POLY1305 |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| /* auto detect between 32bit / 64bit */ |
| #define HAS_SIZEOF_INT128_64BIT (defined(__SIZEOF_INT128__) && defined(__LP64__)) |
| #define HAS_MSVC_64BIT (defined(_MSC_VER) && defined(_M_X64)) |
| #define HAS_GCC_4_4_64BIT (defined(__GNUC__) && defined(__LP64__) && \ |
| ((__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 4)))) |
| |
| #if (HAS_SIZEOF_INT128_64BIT || HAS_MSVC_64BIT || HAS_GCC_4_4_64BIT) |
| #define POLY130564 |
| #else |
| #define POLY130532 |
| #endif |
| |
| enum { |
| POLY1305 = 7, |
| POLY1305_BLOCK_SIZE = 16, |
| POLY1305_DIGEST_SIZE = 16, |
| POLY1305_PAD_SIZE = 56 |
| }; |
| |
| /* Poly1305 state */ |
| typedef struct Poly1305 { |
| #if defined(POLY130564) |
| word64 r[3]; |
| word64 h[3]; |
| word64 pad[2]; |
| #else |
| word32 r[5]; |
| word32 h[5]; |
| word32 pad[4]; |
| #endif |
| size_t leftover; |
| unsigned char buffer[POLY1305_BLOCK_SIZE]; |
| unsigned char final; |
| } Poly1305; |
| |
| |
| /* does init */ |
| |
| WOLFSSL_API int wc_Poly1305SetKey(Poly1305* poly1305, const byte* key, word32 kySz); |
| WOLFSSL_API int wc_Poly1305Update(Poly1305* poly1305, const byte*, word32); |
| WOLFSSL_API int wc_Poly1305Final(Poly1305* poly1305, byte* tag); |
| |
| #ifdef __cplusplus |
| } /* extern "C" */ |
| #endif |
| |
| #endif /* HAVE_POLY1305 */ |
| #endif /* WOLF_CRYPT_POLY1305_H */ |
| |