am a417deb9: am 0597b069: Merge "ECIES: fix memory leaks and add malloc checks in HKDF. Use fixed-timing memcmp in HmacOperation."

* commit 'a417deb9aab3718afdf40cf055a631e02ec21753':
  ECIES: fix memory leaks and add malloc checks in HKDF. Use fixed-timing memcmp in HmacOperation.