/* SPDX-License-Identifier: GPL-2.0 */ /* * Common values for the Poly1305 algorithm */ #ifndef _CRYPTO_POLY1305_H #define _CRYPTO_POLY1305_H #include <linux/types.h> #include <linux/crypto.h> #define POLY1305_BLOCK_SIZE 16 #define POLY1305_KEY_SIZE 32 #define POLY1305_DIGEST_SIZE 16 struct poly1305_desc_ctx { /* key */ u32 r[5]; /* finalize key */ u32 s[4]; /* accumulator */ u32 h[5]; /* partial buffer */ u8 buf[POLY1305_BLOCK_SIZE]; /* bytes used in partial buffer */ unsigned int buflen; /* r key has been set */ bool rset; /* s key has been set */ bool sset; }; int crypto_poly1305_init(struct shash_desc *desc); unsigned int crypto_poly1305_setdesckey(struct poly1305_desc_ctx *dctx, const u8 *src, unsigned int srclen); int crypto_poly1305_update(struct shash_desc *desc, const u8 *src, unsigned int srclen); int crypto_poly1305_final(struct shash_desc *desc, u8 *dst); #endif