OOM error on some devices due to larger files is fixed.

[abayomiAkanji]

The encryption and decryption method throw OOM error for larger files on certain devices (Example is Samsung Galaxy J7, Samsung S5...). The while loop and byte[] are being modified to fix this bug.

[codecov]

Codecov Report

Merging #4 into master will not change coverage.
The diff coverage is 100%.

@@            Coverage Diff            @@
##             master       #4   +/-   ##
=========================================
  Coverage     96.35%   96.35%           
  Complexity      108      108           
=========================================
  Files             3        3           
  Lines           357      357           
  Branches         47       47           
=========================================
  Hits            344      344           
  Misses            6        6           
  Partials          7        7

Impacted Files	Coverage Δ	Complexity Δ
alice/src/main/java/com/rockaport/alice/Alice.java	94.58% <100%> (ø)	87 <0> (ø)	⬇️

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[rockaport]

It's odd that this change fixes an OOM error. Apps generally have +64MB of heap/ram/memory allotted and these file IO buffers are only 4kB. I could see how if you ran this in parallel on multiple files you might run into a problem, but the library isn't threadsafe anyway so you shouldn't do that.

The only way I can see this throwing an OOM error is if you tried to load a large file into memory and use the byte array encrypt/decrypt routines. Changing the buffer sizes wouldn't help you there and instead give me the feeling that there's a different problem or memory leak happening.