Release 4.12 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
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Directory: include/crypto

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