AddressCalc.c 1.1 KB

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  1. /* vim: set expandtab ts=4 sw=4: */
  2. /*
  3. * You may redistribute this program and/or modify it under the terms of
  4. * the GNU General Public License as published by the Free Software Foundation,
  5. * either version 3 of the License, or (at your option) any later version.
  6. *
  7. * This program is distributed in the hope that it will be useful,
  8. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  9. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  10. * GNU General Public License for more details.
  11. *
  12. * You should have received a copy of the GNU General Public License
  13. * along with this program. If not, see <http://www.gnu.org/licenses/>.
  14. */
  15. #include "crypto_hash_sha512.h"
  16. #include "util/Bits.h"
  17. #include <stdint.h>
  18. int AddressCalc_addressForPublicKey(uint8_t addressOut[16], const uint8_t key[32])
  19. {
  20. uint8_t hash[crypto_hash_sha512_BYTES];
  21. crypto_hash_sha512(hash, key, 32);
  22. crypto_hash_sha512(hash, hash, crypto_hash_sha512_BYTES);
  23. if (addressOut) {
  24. Bits_memcpyConst(addressOut, hash, 16);
  25. }
  26. return hash[0] == 0xFC;
  27. }
  28. int AddressCalc_validAddress(const uint8_t address[16])
  29. {
  30. return address[0] == 0xFC;
  31. }