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  1. /*
  2. * rc4.h
  3. *
  4. * Copyright (c) 1996-2000 Whistle Communications, Inc.
  5. * All rights reserved.
  6. *
  7. * Subject to the following obligations and disclaimer of warranty, use and
  8. * redistribution of this software, in source or object code forms, with or
  9. * without modifications are expressly permitted by Whistle Communications;
  10. * provided, however, that:
  11. * 1. Any and all reproductions of the source or object code must include the
  12. * copyright notice above and the following disclaimer of warranties; and
  13. * 2. No rights are granted, in any manner or form, to use Whistle
  14. * Communications, Inc. trademarks, including the mark "WHISTLE
  15. * COMMUNICATIONS" on advertising, endorsements, or otherwise except as
  16. * such appears in the above copyright notice or in the software.
  17. *
  18. * THIS SOFTWARE IS BEING PROVIDED BY WHISTLE COMMUNICATIONS "AS IS", AND
  19. * TO THE MAXIMUM EXTENT PERMITTED BY LAW, WHISTLE COMMUNICATIONS MAKES NO
  20. * REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THIS SOFTWARE,
  21. * INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED WARRANTIES OF
  22. * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
  23. * WHISTLE COMMUNICATIONS DOES NOT WARRANT, GUARANTEE, OR MAKE ANY
  24. * REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS OF THE USE OF THIS
  25. * SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE.
  26. * IN NO EVENT SHALL WHISTLE COMMUNICATIONS BE LIABLE FOR ANY DAMAGES
  27. * RESULTING FROM OR ARISING OUT OF ANY USE OF THIS SOFTWARE, INCLUDING
  28. * WITHOUT LIMITATION, ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
  29. * PUNITIVE, OR CONSEQUENTIAL DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR
  30. * SERVICES, LOSS OF USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER ANY
  31. * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  32. * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  33. * THIS SOFTWARE, EVEN IF WHISTLE COMMUNICATIONS IS ADVISED OF THE POSSIBILITY
  34. * OF SUCH DAMAGE.
  35. *
  36. * $FreeBSD: src/sys/crypto/rc4/rc4.h,v 1.2.2.1 2000/04/18 04:48:32 archie Exp $
  37. */
  38. #ifndef RC4_H_
  39. #define RC4_H_
  40. typedef uint8_t u_char;
  41. struct rc4_state {
  42. u_char perm[256];
  43. u_char index1;
  44. u_char index2;
  45. };
  46. void rc4_init(struct rc4_state *state, const u_char *key, int keylen);
  47. void rc4_crypt(struct rc4_state *state,
  48. const u_char *inbuf, u_char *outbuf, int buflen);
  49. #endif