Simple encryption for LogKeys (patch attached)

```
Hello,

I didn't want logKeys to store the log files in plain text, in the case if
someone tries obtains my hard-drive, he/she can just read off from the log file
without even authenticating as root through my machine.

So I just added a few lines into main and into the args, that allow the files
to be "" encrypted "" as before they get written. (For now I just offset each
ascii character by 20.. =/)

Of course it is a very weak encryption, but I didn't want to store the files in
plain text. Of course, if someone views the source code he/she will figure out
how to decrypt it, but I was thinking about solving that in future
contributions.

I have commented out the code, tested it and created a patch for you. Hoping to
hear from you.

Best,
Steven Enamakel
```

Original issue reported on code.google.com by `steven...@gmail.com` on 1 Dec 2014 at 12:13

Attachments:
- [encryption.patch](https://storage.googleapis.com/google-code-attachments/logkeys/issue-124/comment-0/encryption.patch)

Start by reviewing the attached encryption.patch and the changes it proposes in main and argument handling. Compare the requested protection with the existing log-writing behavior; done requires an agreed, secure design, implementation, and tests that verify logs are not stored in plaintext.

Written by the indexing model from the issue text.