From eb772f37ae8163a89e28a435f6a18742ae06653b Mon Sep 17 00:00:00 2001 From: Eric Biggers Date: Fri, 5 Jan 2018 11:09:58 -0800 Subject: 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 Signed-off-by: Herbert Xu --- include/crypto/salsa20.h | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) create mode 100644 include/crypto/salsa20.h (limited to 'include/crypto') diff --git a/include/crypto/salsa20.h b/include/crypto/salsa20.h new file mode 100644 index 000000000000..19ed48aefc86 --- /dev/null +++ b/include/crypto/salsa20.h @@ -0,0 +1,27 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Common values for the Salsa20 algorithm + */ + +#ifndef _CRYPTO_SALSA20_H +#define _CRYPTO_SALSA20_H + +#include + +#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 */ -- cgit v1.2.3