fs/smb/common/arc4.h

   1 /* SPDX-License-Identifier: GPL-2.0+ */
   2 /*
   3  * Common values for ARC4 Cipher Algorithm
   4  */
   5
   6 #ifndef _CRYPTO_ARC4_H
   7 #define _CRYPTO_ARC4_H
   8
   9 #include <linux/types.h>
  10
  11 #define ARC4_MIN_KEY_SIZE       1
  12 #define ARC4_MAX_KEY_SIZE       256
  13 #define ARC4_BLOCK_SIZE         1
  14
  15 struct arc4_ctx {
  16         u32 S[256];
  17         u32 x, y;
  18 };
  19
  20 int cifs_arc4_setkey(struct arc4_ctx *ctx, const u8 *in_key, unsigned int key_len);
  21 void cifs_arc4_crypt(struct arc4_ctx *ctx, u8 *out, const u8 *in, unsigned int len);
  22
  23 #endif /* _CRYPTO_ARC4_H */