/* SPDX-License-Identifier: GPL-2.0 *//* * Common values for the Poly1305 algorithm */#ifndef _CRYPTO_POLY1305_H#define _CRYPTO_POLY1305_H#include <linux/types.h>#define POLY1305_BLOCK_SIZE 16#define POLY1305_KEY_SIZE 32#define POLY1305_DIGEST_SIZE 16/* The poly1305_key and poly1305_state types are mostly opaque and * implementation-defined. Limbs might be in base 2^64 or base 2^26, or * different yet. The union type provided keeps these 64-bit aligned for the * case in which this is implemented using 64x64 multiplies. */struct poly1305_key { union { u32 r[5]; u64 r64[3]; };};struct poly1305_core_key { struct poly1305_key key; struct poly1305_key precomputed_s;};struct poly1305_state { union { u32 h[5]; u64 h64[3]; };};/* Combined state for block function. */struct poly1305_block_state { /* accumulator */ struct poly1305_state h; /* key */ union { struct poly1305_key opaque_r[CONFIG_CRYPTO_LIB_POLY1305_RSIZE]; struct poly1305_core_key core_r; };};struct poly1305_desc_ctx { /* partial buffer */ u8 buf[POLY1305_BLOCK_SIZE]; /* bytes used in partial buffer */ unsigned int buflen; /* finalize key */ u32 s[4]; struct poly1305_block_state state;};void poly1305_init(struct poly1305_desc_ctx *desc, const u8 key[at_least POLY1305_KEY_SIZE]);void poly1305_update(struct poly1305_desc_ctx *desc, const u8 *src, unsigned int nbytes);void poly1305_final(struct poly1305_desc_ctx *desc, u8 *digest);#endif
/* SPDX-License-Identifier: GPL-2.0 */
/*
* Common values for the Poly1305 algorithm
*/
#ifndef _CRYPTO_POLY1305_H
#define _CRYPTO_POLY1305_H
#include <linux/types.h>
#define POLY1305_BLOCK_SIZE 16
#define POLY1305_KEY_SIZE 32
#define POLY1305_DIGEST_SIZE 16
/* The poly1305_key and poly1305_state types are mostly opaque and
* implementation-defined. Limbs might be in base 2^64 or base 2^26, or
* different yet. The union type provided keeps these 64-bit aligned for the
* case in which this is implemented using 64x64 multiplies.
*/
struct poly1305_key {
union {
u32 r[5];
u64 r64[3];
};
};
struct poly1305_core_key {
struct poly1305_key key;
struct poly1305_key precomputed_s;
};
struct poly1305_state {
union {
u32 h[5];
u64 h64[3];
};
};
/* Combined state for block function. */
struct poly1305_block_state {
/* accumulator */
struct poly1305_state h;
/* key */
union {
struct poly1305_key opaque_r[CONFIG_CRYPTO_LIB_POLY1305_RSIZE];
struct poly1305_core_key core_r;
};
};
struct poly1305_desc_ctx {
/* partial buffer */
u8 buf[POLY1305_BLOCK_SIZE];
/* bytes used in partial buffer */
unsigned int buflen;
/* finalize key */
u32 s[4];
struct poly1305_block_state state;
};
void poly1305_init(struct poly1305_desc_ctx *desc,
const u8 key[at_least POLY1305_KEY_SIZE]);
void poly1305_update(struct poly1305_desc_ctx *desc,
const u8 *src, unsigned int nbytes);
void poly1305_final(struct poly1305_desc_ctx *desc, u8 *digest);
#endif