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29 lines
1.2 KiB
C
29 lines
1.2 KiB
C
/*
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* poly1305.h - header file for Poly1305 implementation.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef FREEBL_POLY1305_H_
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#define FREEBL_POLY1305_H_
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typedef unsigned char poly1305_state[512];
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/* Poly1305Init sets up |state| so that it can be used to calculate an
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* authentication tag with the one-time key |key|. Note that |key| is a
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* one-time key and therefore there is no `reset' method because that would
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* enable several messages to be authenticated with the same key. */
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extern void Poly1305Init(poly1305_state* state, const unsigned char key[32]);
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/* Poly1305Update processes |in_len| bytes from |in|. It can be called zero or
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* more times after poly1305_init. */
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extern void Poly1305Update(poly1305_state* state, const unsigned char* in,
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size_t inLen);
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/* Poly1305Finish completes the poly1305 calculation and writes a 16 byte
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* authentication tag to |mac|. */
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extern void Poly1305Finish(poly1305_state* state, unsigned char mac[16]);
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#endif /* FREEBL_POLY1305_H_ */
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