mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-25 13:14:07 +08:00
31d7247da5
As architecture specific drivers need a software fallback, export a ChaCha20 en-/decryption function together with some helpers in a header file. Signed-off-by: Martin Willi <martin@strongswan.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
26 lines
595 B
C
26 lines
595 B
C
/*
|
|
* Common values for the ChaCha20 algorithm
|
|
*/
|
|
|
|
#ifndef _CRYPTO_CHACHA20_H
|
|
#define _CRYPTO_CHACHA20_H
|
|
|
|
#include <linux/types.h>
|
|
#include <linux/crypto.h>
|
|
|
|
#define CHACHA20_IV_SIZE 16
|
|
#define CHACHA20_KEY_SIZE 32
|
|
#define CHACHA20_BLOCK_SIZE 64
|
|
|
|
struct chacha20_ctx {
|
|
u32 key[8];
|
|
};
|
|
|
|
void crypto_chacha20_init(u32 *state, struct chacha20_ctx *ctx, u8 *iv);
|
|
int crypto_chacha20_setkey(struct crypto_tfm *tfm, const u8 *key,
|
|
unsigned int keysize);
|
|
int crypto_chacha20_crypt(struct blkcipher_desc *desc, struct scatterlist *dst,
|
|
struct scatterlist *src, unsigned int nbytes);
|
|
|
|
#endif
|