sha1.c

   1 #include "para.h"
   2 #include <openssl/sha.h>
   3
   4 /** \file sha1.c Secure Hash Algorithm, provided by openssl. */
   5
   6 /**
   7  * Compute the sha1 hash.
   8  *
   9  * \param data Pointer to the data to compute the hash valure from.
  10  * \param len The length of \a data in bytes.
  11  * \param sha1 Result pointer
  12  *
  13  * \a sha1 must point to an area at least 20 bytes large.
  14  *
  15  * \sa sha(3), openssl(1).
  16  * */
  17 void sha1_hash(const char *data, unsigned long len, unsigned char *sha1)
  18 {
  19         SHA_CTX c;
  20         SHA1_Init(&c);
  21         SHA1_Update(&c, data, len);
  22         SHA1_Final(sha1, &c);
  23 }