linux/include/crypto/salsa20.h
Eric Biggers eb772f37ae crypto: salsa20 - export generic helpers
Export the Salsa20 constants, transform context, and initialization
functions so that they can be reused by the x86 implementation.

Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-01-12 23:03:42 +11:00

28 lines
582 B
C

/* SPDX-License-Identifier: GPL-2.0 */
/*
* Common values for the Salsa20 algorithm
*/
#ifndef _CRYPTO_SALSA20_H
#define _CRYPTO_SALSA20_H
#include <linux/types.h>
#define SALSA20_IV_SIZE 8
#define SALSA20_MIN_KEY_SIZE 16
#define SALSA20_MAX_KEY_SIZE 32
#define SALSA20_BLOCK_SIZE 64
struct crypto_skcipher;
struct salsa20_ctx {
u32 initial_state[16];
};
void crypto_salsa20_init(u32 *state, const struct salsa20_ctx *ctx,
const u8 *iv);
int crypto_salsa20_setkey(struct crypto_skcipher *tfm, const u8 *key,
unsigned int keysize);
#endif /* _CRYPTO_SALSA20_H */