/* 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