ECIES: add ECIES-KEM. This version supports HKDF and ECDH with NIST curves.
am: fabacaf3e6

* commit 'fabacaf3e6019804cc8a98a2b8296be1d0125519':
  ECIES: add ECIES-KEM. This version supports HKDF and ECDH with NIST curves.