/* * 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);int crypto_poly1305_setkey(struct crypto_shash *tfm,			   const u8 *key, unsigned int keylen);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