Encryption. Change Mcrypt to OpenSSL

[ebogdanov]

There are plenty of things to discuss.

1. OpenSSL can't decrypt RIJANDAEL-256 from Mcrypt. So that there should be some workaround to decrypt existing data with old cipher and encode with new one.
2. I can't test Federated app right now.
3. I do not like idea that I DB fields length should be increased.
4. May be it's time to add use aes-256-cbc and add hash check also?

[febinthomas]

@ebogdanov Any progress on this..?

[devisgeorge]

@ebogdanov we were using the earlier version of the package for the past 2 years and was planning on a update of php 7.1 . The mentioned issue occurred in the package. Could you please update the latest version with the above fixes.

[ebogdanov]

@febinthomas PR was ready for review&merge :) That's all I know.
@devisgeorge OK, but on weekend only. I've plenty of work these days.

[devisgeorge]

@ebogdanov Alright np .Thank you for the quick response.

[ebogdanov]

@devisgeorge OK, I've rebased this PR on the current head.

[febinthomas]

@ebogdanov Could you please update the latest version with the above fixes.
@consolibyte could you please take a look on this

[ebogdanov]

@febinthomas
Done. But PR shows some maddness with original commits. I do not have idea how to exclude those wasn't made by me.

[febinthomas]

@ebogdanov create a new branch from master and try to squash merge your changes from current branch. then you can either create a new PR or force push to this PR