28 lines
761 B
C
28 lines
761 B
C
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/* $OpenBSD: poly1305.h,v 1.2 2020/07/22 13:54:30 tobhe Exp $ */
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/*
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* Public Domain poly1305 from Andrew Moon
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*
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* poly1305 implementation using 32 bit * 32 bit = 64 bit multiplication
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* and 64 bit addition from https://github.com/floodyberry/poly1305-donna
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*/
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#ifndef _POLY1305_H_
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#define _POLY1305_H_
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#define poly1305_block_size 16
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typedef struct poly1305_state {
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unsigned long r[5];
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unsigned long h[5];
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unsigned long pad[4];
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size_t leftover;
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unsigned char buffer[poly1305_block_size];
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unsigned char final;
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} poly1305_state;
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void poly1305_init(poly1305_state *, const unsigned char[32]);
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void poly1305_update(poly1305_state *, const unsigned char *, size_t);
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void poly1305_finish(poly1305_state *, unsigned char[16]);
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#endif /* _POLY1305_H_ */
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