87 lines
2.8 KiB
C
87 lines
2.8 KiB
C
|
/* $OpenBSD: chachapoly.h,v 1.4 2020/07/22 13:54:30 tobhe Exp $ */
|
||
|
|
/*
|
||
|
|
* Copyright (c) 2015 Mike Belopuhov
|
||
|
|
*
|
||
|
|
* Permission to use, copy, modify, and distribute this software for any
|
||
|
|
* purpose with or without fee is hereby granted, provided that the above
|
||
|
|
* copyright notice and this permission notice appear in all copies.
|
||
|
|
*
|
||
|
|
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
||
|
|
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
||
|
|
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
|
||
|
|
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
||
|
|
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
||
|
|
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
|
||
|
|
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef _CHACHAPOLY_H_
|
||
|
|
#define _CHACHAPOLY_H_
|
||
|
|
|
||
|
|
#define CHACHA20_KEYSIZE 32
|
||
|
|
#define CHACHA20_CTR 4
|
||
|
|
#define CHACHA20_SALT 4
|
||
|
|
#define CHACHA20_NONCE 8
|
||
|
|
#define CHACHA20_BLOCK_LEN 64
|
||
|
|
|
||
|
|
struct chacha20_ctx {
|
||
|
|
uint8_t block[CHACHA20_BLOCK_LEN];
|
||
|
|
uint8_t nonce[CHACHA20_NONCE];
|
||
|
|
};
|
||
|
|
|
||
|
|
int chacha20_setkey(void *, u_int8_t *, int);
|
||
|
|
void chacha20_reinit(caddr_t, u_int8_t *);
|
||
|
|
void chacha20_crypt(caddr_t, u_int8_t *);
|
||
|
|
|
||
|
|
|
||
|
|
#define POLY1305_KEYLEN 32
|
||
|
|
#define POLY1305_TAGLEN 16
|
||
|
|
#define POLY1305_BLOCK_LEN 16
|
||
|
|
|
||
|
|
struct poly1305_ctx {
|
||
|
|
/* r, h, pad, leftover */
|
||
|
|
unsigned long state[5+5+4];
|
||
|
|
size_t leftover;
|
||
|
|
unsigned char buffer[POLY1305_BLOCK_LEN];
|
||
|
|
unsigned char final;
|
||
|
|
};
|
||
|
|
|
||
|
|
typedef struct {
|
||
|
|
uint8_t key[POLY1305_KEYLEN];
|
||
|
|
/* counter, salt */
|
||
|
|
uint8_t nonce[CHACHA20_NONCE];
|
||
|
|
struct chacha20_ctx chacha;
|
||
|
|
struct poly1305_ctx poly;
|
||
|
|
} CHACHA20_POLY1305_CTX;
|
||
|
|
|
||
|
|
void Chacha20_Poly1305_Init(void *);
|
||
|
|
void Chacha20_Poly1305_Setkey(void *, const uint8_t *, uint16_t);
|
||
|
|
void Chacha20_Poly1305_Reinit(void *, const uint8_t *, uint16_t);
|
||
|
|
int Chacha20_Poly1305_Update(void *, const uint8_t *, uint16_t);
|
||
|
|
void Chacha20_Poly1305_Final(uint8_t[POLY1305_TAGLEN], void *);
|
||
|
|
|
||
|
|
/* WireGuard crypto */
|
||
|
|
#define CHACHA20POLY1305_KEY_SIZE CHACHA20_KEYSIZE
|
||
|
|
#define CHACHA20POLY1305_AUTHTAG_SIZE POLY1305_TAGLEN
|
||
|
|
#define XCHACHA20POLY1305_NONCE_SIZE 24
|
||
|
|
|
||
|
|
void chacha20poly1305_encrypt(uint8_t *, const uint8_t *, const size_t,
|
||
|
|
const uint8_t *, const size_t, const uint64_t,
|
||
|
|
const uint8_t[CHACHA20POLY1305_KEY_SIZE]);
|
||
|
|
|
||
|
|
int chacha20poly1305_decrypt(uint8_t *, const uint8_t *, const size_t,
|
||
|
|
const uint8_t *, const size_t, const uint64_t,
|
||
|
|
const uint8_t[CHACHA20POLY1305_KEY_SIZE]);
|
||
|
|
|
||
|
|
void xchacha20poly1305_encrypt(uint8_t *, const uint8_t *, const size_t,
|
||
|
|
const uint8_t *, const size_t,
|
||
|
|
const uint8_t[XCHACHA20POLY1305_NONCE_SIZE],
|
||
|
|
const uint8_t[CHACHA20POLY1305_KEY_SIZE]);
|
||
|
|
|
||
|
|
int xchacha20poly1305_decrypt(uint8_t *, const uint8_t *, const size_t,
|
||
|
|
const uint8_t *, const size_t,
|
||
|
|
const uint8_t[XCHACHA20POLY1305_NONCE_SIZE],
|
||
|
|
const uint8_t[CHACHA20POLY1305_KEY_SIZE]);
|
||
|
|
|
||
|
|
#endif /* _CHACHAPOLY_H_ */
|