include/crypto/salsa20.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * Common values for the Salsa20 algorithm
   4  */
   5
   6 #ifndef _CRYPTO_SALSA20_H
   7 #define _CRYPTO_SALSA20_H
   8
   9 #include <linux/types.h>
  10
  11 #define SALSA20_IV_SIZE         8
  12 #define SALSA20_MIN_KEY_SIZE    16
  13 #define SALSA20_MAX_KEY_SIZE    32
  14 #define SALSA20_BLOCK_SIZE      64
  15
  16 struct crypto_skcipher;
  17
  18 struct salsa20_ctx {
  19         u32 initial_state[16];
  20 };
  21
  22 void crypto_salsa20_init(u32 *state, const struct salsa20_ctx *ctx,
  23                          const u8 *iv);
  24 int crypto_salsa20_setkey(struct crypto_skcipher *tfm, const u8 *key,
  25                           unsigned int keysize);
  26
  27 #endif /* _CRYPTO_SALSA20_H */