src/crypto.h

   1 #ifndef __ISDS_CRYPTO_H__
   2 #define __ISDS_CRYPTO_H__
   3
   4 #include "isds.h"
   5
   6 /* Initialise all cryptographic libraries which libisds depends on.
   7  * @return IE_SUCCESS if everything went all-right. */
   8 isds_error _isds_init_crypto(void);
   9
  10 /* Computes hash from @input with @length and store it into @hash.
  11  * The hash algorithm is defined inside @hash.
  12  * @input is input block to hash
  13  * @length is @input block length in bytes
  14  * @hash input algorithm, output hash value and hash length; hash value will be
  15  * reallocated, it's always valid pointer or NULL (before and after call) */
  16 isds_error _isds_compute_hash(const void *input, const size_t length,
  17         struct isds_hash *hash);
  18
  19 /* Free CMS data buffer allocated inside _isds_extract_cms_data().
  20  * This is necessary because GPGME.
  21  * @buffer is pointer to memory to free */
  22 void _isds_cms_data_free(void *buffer);
  23
  24 /* Extract data from CMS (successor of PKCS#7)
  25  * The CMS' signature is is not verified.
  26  * @context is session context
  27  * @cms is input block with CMS structure
  28  * @cms_length is @cms block length in bytes
  29  * @data are automatically reallocated bit stream with data found in @cms
  30  * You must free them with _isds_cms_data_free().
  31  * @data_length is length of @data in bytes */
  32 isds_error _isds_extract_cms_data(struct isds_ctx *context,
  33         const void *cms, const size_t cms_length,
  34         void **data, size_t *data_length);
  35
  36 #endif