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