PR for XEP-0454 Media File Sharing

[cmeng-git]

Replaces: #317 pull request with the following updates

• Remove RandomUtils.java #secureRandomBytes() class and use RandomUtil#fillWithSecureRandom(key);
• Move StringUtils.hexStringToByteArray() into AesgcmUrl.class; eliminating patched StringUtils
• Update all project files with XEP-XXXX to XEP-0454: OMEMO Media Sharing

[stokito]

Thank you!

Replaces: #317 pull request

The text in a commit message is not really needed for a history.

You can add Co-authored-by: Paul Schaub <vanitasvitae@fsfe.org> to show him as an author too.

The PR is opened not into the current master branch but into the igniterealtime:4.4. I see the difference that the ‎documentation/extensions/index.md file is now removed and instead we should add the new supported XEP into the doap.xml.

[cmeng-git]

Where should I add this?

You can add Co-authored-by: Paul Schaub vanitasvitae@fsfe.org to show him as an author too.

The PR is raised against igniterealtime:4.4 as the libraray is only tested in this version. I can change to master assume it works with master library.

Where is doap.xml? I can only locate resources/smack.doap file.

[stokito]

This was correct