78 lines
2.0 KiB
C
78 lines
2.0 KiB
C
/* 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_key {
|
|
u32 r[5]; /* key, base 2^26 */
|
|
};
|
|
|
|
struct poly1305_state {
|
|
u32 h[5]; /* accumulator, base 2^26 */
|
|
};
|
|
|
|
struct poly1305_desc_ctx {
|
|
/* partial buffer */
|
|
u8 buf[POLY1305_BLOCK_SIZE];
|
|
/* bytes used in partial buffer */
|
|
unsigned int buflen;
|
|
/* how many keys have been set in r[] */
|
|
unsigned short rset;
|
|
/* whether s[] has been set */
|
|
bool sset;
|
|
/* finalize key */
|
|
u32 s[4];
|
|
/* accumulator */
|
|
struct poly1305_state h;
|
|
/* key */
|
|
struct poly1305_key r[CONFIG_CRYPTO_LIB_POLY1305_RSIZE];
|
|
};
|
|
|
|
void poly1305_init_arch(struct poly1305_desc_ctx *desc, const u8 *key);
|
|
void poly1305_init_generic(struct poly1305_desc_ctx *desc, const u8 *key);
|
|
|
|
static inline void poly1305_init(struct poly1305_desc_ctx *desc, const u8 *key)
|
|
{
|
|
if (IS_ENABLED(CONFIG_CRYPTO_ARCH_HAVE_LIB_POLY1305))
|
|
poly1305_init_arch(desc, key);
|
|
else
|
|
poly1305_init_generic(desc, key);
|
|
}
|
|
|
|
void poly1305_update_arch(struct poly1305_desc_ctx *desc, const u8 *src,
|
|
unsigned int nbytes);
|
|
void poly1305_update_generic(struct poly1305_desc_ctx *desc, const u8 *src,
|
|
unsigned int nbytes);
|
|
|
|
static inline void poly1305_update(struct poly1305_desc_ctx *desc,
|
|
const u8 *src, unsigned int nbytes)
|
|
{
|
|
if (IS_ENABLED(CONFIG_CRYPTO_ARCH_HAVE_LIB_POLY1305))
|
|
poly1305_update_arch(desc, src, nbytes);
|
|
else
|
|
poly1305_update_generic(desc, src, nbytes);
|
|
}
|
|
|
|
void poly1305_final_arch(struct poly1305_desc_ctx *desc, u8 *digest);
|
|
void poly1305_final_generic(struct poly1305_desc_ctx *desc, u8 *digest);
|
|
|
|
static inline void poly1305_final(struct poly1305_desc_ctx *desc, u8 *digest)
|
|
{
|
|
if (IS_ENABLED(CONFIG_CRYPTO_ARCH_HAVE_LIB_POLY1305))
|
|
poly1305_final_arch(desc, digest);
|
|
else
|
|
poly1305_final_generic(desc, digest);
|
|
}
|
|
|
|
#endif
|