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

/*
 * 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
Commit	Line	Data
2546f811 MW	1	/*
	2	* Common values for the Poly1305 algorithm
	3	*/
	4
	5	#ifndef _CRYPTO_POLY1305_H
	6	#define _CRYPTO_POLY1305_H
	7
	8	#include <linux/types.h>
	9	#include <linux/crypto.h>
	10
	11	#define POLY1305_BLOCK_SIZE 16
	12	#define POLY1305_KEY_SIZE 32
	13	#define POLY1305_DIGEST_SIZE 16
	14
	15	struct poly1305_desc_ctx {
	16	/* key */
	17	u32 r[5];
	18	/* finalize key */
	19	u32 s[4];
	20	/* accumulator */
	21	u32 h[5];
	22	/* partial buffer */
	23	u8 buf[POLY1305_BLOCK_SIZE];
	24	/* bytes used in partial buffer */
	25	unsigned int buflen;
	26	/* r key has been set */
	27	bool rset;
	28	/* s key has been set */
	29	bool sset;
	30	};
	31
	32	int crypto_poly1305_init(struct shash_desc *desc);
	33	int crypto_poly1305_setkey(struct crypto_shash *tfm,
	34	const u8 *key, unsigned int keylen);
	35	unsigned int crypto_poly1305_setdesckey(struct poly1305_desc_ctx *dctx,
	36	const u8 *src, unsigned int srclen);
	37	int crypto_poly1305_update(struct shash_desc *desc,
	38	const u8 *src, unsigned int srclen);
	39	int crypto_poly1305_final(struct shash_desc desc, u8 dst);
	40
	41	#endif