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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768/* 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