[mirror_ubuntu-bionic-kernel.git] / include / crypto / poly1305.h

/* 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
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
2546f811 MW	2	/*
	3	* Common values for the Poly1305 algorithm
	4	*/
	5
	6	#ifndef _CRYPTO_POLY1305_H
	7	#define _CRYPTO_POLY1305_H
	8
	9	#include <linux/types.h>
	10	#include <linux/crypto.h>
	11
	12	#define POLY1305_BLOCK_SIZE 16
	13	#define POLY1305_KEY_SIZE 32
	14	#define POLY1305_DIGEST_SIZE 16
	15
	16	struct poly1305_desc_ctx {
	17	/* key */
	18	u32 r[5];
	19	/* finalize key */
	20	u32 s[4];
	21	/* accumulator */
	22	u32 h[5];
	23	/* partial buffer */
	24	u8 buf[POLY1305_BLOCK_SIZE];
	25	/* bytes used in partial buffer */
	26	unsigned int buflen;
	27	/* r key has been set */
	28	bool rset;
	29	/* s key has been set */
	30	bool sset;
	31	};
	32
	33	int crypto_poly1305_init(struct shash_desc *desc);
2546f811 MW	34	unsigned int crypto_poly1305_setdesckey(struct poly1305_desc_ctx *dctx,
	35	const u8 *src, unsigned int srclen);
	36	int crypto_poly1305_update(struct shash_desc *desc,
	37	const u8 *src, unsigned int srclen);
	38	int crypto_poly1305_final(struct shash_desc desc, u8 dst);
	39
	40	#endif