osfmk/corecrypto/cchmac/src/cchmac_final.c

   1 /*
   2  *  cchmac_final.c
   3  *  corecrypto
   4  *
   5  *  Created by Michael Brouwer on 12/7/10.
   6  *  Copyright 2010,2011 Apple Inc. All rights reserved.
   7  *
   8  */
   9
  10 #include <corecrypto/cchmac.h>
  11 #include <corecrypto/ccn.h>
  12
  13 void cchmac_final(const struct ccdigest_info *di, cchmac_ctx_t hc,
  14                   unsigned char *mac) {
  15     ccdigest_final(di, cchmac_digest_ctx(di, hc), cchmac_data(di, hc));
  16     /* typecast: output size will alwys fit in an unsigned int */
  17     cchmac_num(di, hc) = (unsigned int)di->output_size;
  18     cchmac_nbits(di, hc) = di->block_size * 8;
  19     ccdigest_copy_state(di, cchmac_istate32(di, hc), cchmac_ostate32(di, hc));
  20     ccdigest_final(di, cchmac_digest_ctx(di, hc), mac);
  21 }