| /* SPDX-License-Identifier: GPL-2.0 */ |
| /* |
| * Common values for the ChaCha20 algorithm |
| */ |
| |
| #ifndef _CRYPTO_CHACHA20_H |
| #define _CRYPTO_CHACHA20_H |
| |
| #include <crypto/skcipher.h> |
| #include <linux/types.h> |
| #include <linux/crypto.h> |
| |
| #define CHACHA20_IV_SIZE 16 |
| #define CHACHA20_KEY_SIZE 32 |
| #define CHACHA20_BLOCK_SIZE 64 |
| #define CHACHA20_BLOCK_WORDS (CHACHA20_BLOCK_SIZE / sizeof(u32)) |
| |
| struct chacha20_ctx { |
| u32 key[8]; |
| }; |
| |
| void chacha20_block(u32 *state, u32 *stream); |
| void crypto_chacha20_init(u32 *state, struct chacha20_ctx *ctx, u8 *iv); |
| int crypto_chacha20_setkey(struct crypto_skcipher *tfm, const u8 *key, |
| unsigned int keysize); |
| int crypto_chacha20_crypt(struct skcipher_request *req); |
| |
| #endif |
