1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * Common values for the Poly1305 algorithm
4 */
5
6#ifndef _CRYPTO_INTERNAL_POLY1305_H
7#define _CRYPTO_INTERNAL_POLY1305_H
8
9#include <asm/unaligned.h>
10#include <linux/types.h>
11#include <crypto/poly1305.h>
12
13/*
14 * Poly1305 core functions.  These only accept whole blocks; the caller must
15 * handle any needed block buffering and padding.  'hibit' must be 1 for any
16 * full blocks, or 0 for the final block if it had to be padded.  If 'nonce' is
17 * non-NULL, then it's added at the end to compute the Poly1305 MAC.  Otherwise,
18 * only the ��-almost-���-universal hash function (not the full MAC) is computed.
19 */
20
21void poly1305_core_setkey(struct poly1305_core_key *key,
22			  const u8 raw_key[POLY1305_BLOCK_SIZE]);
23static inline void poly1305_core_init(struct poly1305_state *state)
24{
25	*state = (struct poly1305_state){};
26}
27
28void poly1305_core_blocks(struct poly1305_state *state,
29			  const struct poly1305_core_key *key, const void *src,
30			  unsigned int nblocks, u32 hibit);
31void poly1305_core_emit(const struct poly1305_state *state, const u32 nonce[4],
32			void *dst);
33
34#endif
35