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 21 void poly1305_core_setkey(struct poly1305_core_key *key, 22 const u8 raw_key[POLY1305_BLOCK_SIZE]); 23 static inline void poly1305_core_init(struct poly1305_state *state) 24 { 25 *state = (struct poly1305_state){}; 26 } 27 28 void poly1305_core_blocks(struct poly1305_state *state, 29 const struct poly1305_core_key *key, const void *src, 30 unsigned int nblocks, u32 hibit); 31 void poly1305_core_emit(const struct poly1305_state *state, const u32 nonce[4], 32 void *dst); 33 34 #endif 35