tree 5059de791da02fffb5ba6422e6abaf92b7dcae89
parent 368341ba3c0c35c793a2ea0c2c363b14aecbee93
author Zhiyi Zhang <zhiyi@cs.ucla.edu> 1565829300 -0700
committer Zhiyi Zhang <zhiyi@cs.ucla.edu> 1567029449 -0700

CryptoHelper: Fix a logic error in HKDF and use OpenSSL HMAC

The reason of using OpenSSL HMAC is because the use of arbitrary-size HMAC key in HKDF

Change-Id: I221c0802c67ed153d6b415d6ec66726c8a205d32