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curl_hmac.h 2.6 KB

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  1. #ifndef HEADER_CURL_HMAC_H
  2. #define HEADER_CURL_HMAC_H
  3. /***************************************************************************
  4. * _ _ ____ _
  5. * Project ___| | | | _ \| |
  6. * / __| | | | |_) | |
  7. * | (__| |_| | _ <| |___
  8. * \___|\___/|_| \_\_____|
  9. *
  10. * Copyright (C) 1998 - 2010, Daniel Stenberg, <daniel@haxx.se>, et al.
  11. *
  12. * This software is licensed as described in the file COPYING, which
  13. * you should have received as part of this distribution. The terms
  14. * are also available at http://curl.haxx.se/docs/copyright.html.
  15. *
  16. * You may opt to use, copy, modify, merge, publish, distribute and/or sell
  17. * copies of the Software, and permit persons to whom the Software is
  18. * furnished to do so, under the terms of the COPYING file.
  19. *
  20. * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  21. * KIND, either express or implied.
  22. *
  23. ***************************************************************************/
  24. #ifndef CURL_DISABLE_CRYPTO_AUTH
  25. typedef void (* HMAC_hinit_func)(void * context);
  26. typedef void (* HMAC_hupdate_func)(void * context,
  27. const unsigned char * data,
  28. unsigned int len);
  29. typedef void (* HMAC_hfinal_func)(unsigned char * result, void * context);
  30. /* Per-hash function HMAC parameters. */
  31. typedef struct {
  32. HMAC_hinit_func hmac_hinit; /* Initialize context procedure. */
  33. HMAC_hupdate_func hmac_hupdate; /* Update context with data. */
  34. HMAC_hfinal_func hmac_hfinal; /* Get final result procedure. */
  35. unsigned int hmac_ctxtsize; /* Context structure size. */
  36. unsigned int hmac_maxkeylen; /* Maximum key length (bytes). */
  37. unsigned int hmac_resultlen; /* Result length (bytes). */
  38. } HMAC_params;
  39. /* HMAC computation context. */
  40. typedef struct {
  41. const HMAC_params * hmac_hash; /* Hash function definition. */
  42. void * hmac_hashctxt1; /* Hash function context 1. */
  43. void * hmac_hashctxt2; /* Hash function context 2. */
  44. } HMAC_context;
  45. /* Prototypes. */
  46. HMAC_context * Curl_HMAC_init(const HMAC_params * hashparams,
  47. const unsigned char * key,
  48. unsigned int keylen);
  49. int Curl_HMAC_update(HMAC_context * context,
  50. const unsigned char * data,
  51. unsigned int len);
  52. int Curl_HMAC_final(HMAC_context * context, unsigned char * result);
  53. #endif
  54. #endif /* HEADER_CURL_HMAC_H */