| /* Copyright (c) 2014, Google Inc. |
| * |
| * Permission to use, copy, modify, and/or distribute this software for any |
| * purpose with or without fee is hereby granted, provided that the above |
| * copyright notice and this permission notice appear in all copies. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY |
| * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION |
| * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN |
| * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ |
| |
| #ifndef OPENSSL_HEADER_POLY1305_H |
| #define OPENSSL_HEADER_POLY1305_H |
| |
| #include <openssl/base.h> |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| |
| typedef unsigned char poly1305_state[512]; |
| |
| /* poly1305_init sets up |state| so that it can be used to calculate an |
| * authentication tag with the one-time key |key|. Note that |key| is a |
| * one-time key and therefore there is no `reset' method because that would |
| * enable several messages to be authenticated with the same key. */ |
| extern void CRYPTO_poly1305_init(poly1305_state* state, const uint8_t key[32]); |
| |
| /* poly1305_update processes |in_len| bytes from |in|. It can be called zero or |
| * more times after poly1305_init. */ |
| extern void CRYPTO_poly1305_update(poly1305_state* state, const uint8_t* in, |
| size_t in_len); |
| |
| /* poly1305_finish completes the poly1305 calculation and writes a 16 byte |
| * authentication tag to |mac|. The |mac| address must be 16-byte aligned. */ |
| extern void CRYPTO_poly1305_finish(poly1305_state* state, uint8_t mac[16]); |
| |
| |
| #if defined(__cplusplus) |
| } /* extern C */ |
| #endif |
| |
| #endif /* OPENSSL_HEADER_POLY1305_H */ |
