curl_hmac.h 2.9 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) 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.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. * SPDX-License-Identifier: curl
  24. *
  25. ***************************************************************************/
  26. #ifndef CURL_DISABLE_CRYPTO_AUTH
  27. #include <curl/curl.h>
  28. #define HMAC_MD5_LENGTH 16
  29. typedef CURLcode (* HMAC_hinit_func)(void *context);
  30. typedef void (* HMAC_hupdate_func)(void *context,
  31. const unsigned char *data,
  32. unsigned int len);
  33. typedef void (* HMAC_hfinal_func)(unsigned char *result, void *context);
  34. /* Per-hash function HMAC parameters. */
  35. struct HMAC_params {
  36. HMAC_hinit_func
  37. hmac_hinit; /* Initialize context procedure. */
  38. HMAC_hupdate_func hmac_hupdate; /* Update context with data. */
  39. HMAC_hfinal_func hmac_hfinal; /* Get final result procedure. */
  40. unsigned int hmac_ctxtsize; /* Context structure size. */
  41. unsigned int hmac_maxkeylen; /* Maximum key length (bytes). */
  42. unsigned int hmac_resultlen; /* Result length (bytes). */
  43. };
  44. /* HMAC computation context. */
  45. struct HMAC_context {
  46. const struct HMAC_params *hmac_hash; /* Hash function definition. */
  47. void *hmac_hashctxt1; /* Hash function context 1. */
  48. void *hmac_hashctxt2; /* Hash function context 2. */
  49. };
  50. /* Prototypes. */
  51. struct HMAC_context *Curl_HMAC_init(const struct HMAC_params *hashparams,
  52. const unsigned char *key,
  53. unsigned int keylen);
  54. int Curl_HMAC_update(struct HMAC_context *context,
  55. const unsigned char *data,
  56. unsigned int len);
  57. int Curl_HMAC_final(struct HMAC_context *context, unsigned char *result);
  58. CURLcode Curl_hmacit(const struct HMAC_params *hashparams,
  59. const unsigned char *key, const size_t keylen,
  60. const unsigned char *data, const size_t datalen,
  61. unsigned char *output);
  62. #endif
  63. #endif /* HEADER_CURL_HMAC_H */