Please add hash param as suggested in the change. There is no way of using anything except SHA256, since this is a default in HMAC. That creates issues for keys derived by other systems that use a different hash function.

… what was wrong. The current implementation causes PKCS#5 verification failure in cbc.js

…re new and old implementations of 'equal'

I've created more changes related to bitArray.equal function, which
currently has a bug causing PKCS5 validation failure in cbc.js.
'equal' functiom should exclude bitts following partial since they
are not a part of bitArray. I've also added test case for 'equal' to
bitArray_test.js file.