LXR linux/include/crypto/internal/poly1305.h

   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 ε-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