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curl_hmac.h 2.8 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 - 2020, 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 https://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. #define HMAC_MD5_LENGTH 16
  26. typedef void (* HMAC_hinit_func)(void *context);
  27. typedef void (* HMAC_hupdate_func)(void *context,
  28. const unsigned char *data,
  29. unsigned int len);
  30. typedef void (* HMAC_hfinal_func)(unsigned char *result, void *context);
  31. /* Per-hash function HMAC parameters. */
  32. struct HMAC_params {
  33. HMAC_hinit_func
  34. hmac_hinit; /* Initialize context procedure. */
  35. HMAC_hupdate_func hmac_hupdate; /* Update context with data. */
  36. HMAC_hfinal_func hmac_hfinal; /* Get final result procedure. */
  37. unsigned int hmac_ctxtsize; /* Context structure size. */
  38. unsigned int hmac_maxkeylen; /* Maximum key length (bytes). */
  39. unsigned int hmac_resultlen; /* Result length (bytes). */
  40. };
  41. /* HMAC computation context. */
  42. struct HMAC_context {
  43. const struct HMAC_params *hmac_hash; /* Hash function definition. */
  44. void *hmac_hashctxt1; /* Hash function context 1. */
  45. void *hmac_hashctxt2; /* Hash function context 2. */
  46. };
  47. /* Prototypes. */
  48. struct HMAC_context *Curl_HMAC_init(const struct HMAC_params *hashparams,
  49. const unsigned char *key,
  50. unsigned int keylen);
  51. int Curl_HMAC_update(struct HMAC_context *context,
  52. const unsigned char *data,
  53. unsigned int len);
  54. int Curl_HMAC_final(struct HMAC_context *context, unsigned char *result);
  55. CURLcode Curl_hmacit(const struct HMAC_params *hashparams,
  56. const unsigned char *key, const size_t keylen,
  57. const unsigned char *data, const size_t datalen,
  58. unsigned char *output);
  59. #endif
  60. #endif /* HEADER_CURL_HMAC_H */