blob_zero(pCksum);
  }
  blob_resize(pCksum, iSize/4);
  DigestToBase16(SHA3Final(&ctx), blob_buffer(pCksum), iSize/8);
  return 0;
}

#if 0 /* NOT USED */
/*
** Compute the SHA3 checksum of a zero-terminated string.  The
** result is held in memory obtained from mprintf().
*/
char *sha3sum(const char *zIn, int iSize){
  SHA3Context ctx;
  char zDigest[132];

  SHA3Init(&ctx, iSize);
  SHA3Update(&ctx, (unsigned const char*)zIn, strlen(zIn));
  DigestToBase16(SHA3Final(&ctx), zDigest, iSize/8);
  return mprintf("%s", zDigest);
}
#endif

/*
** COMMAND: sha3sum*
**
** Usage: %fossil sha3sum FILE...
**
** Compute an SHA3 checksum of all files named on the command-line.