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Diffstat (limited to 'src/include/openssl/poly1305.h')
-rw-r--r-- | src/include/openssl/poly1305.h | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/src/include/openssl/poly1305.h b/src/include/openssl/poly1305.h new file mode 100644 index 0000000..aa90486 --- /dev/null +++ b/src/include/openssl/poly1305.h @@ -0,0 +1,47 @@ +/* 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 */ |