Added disclaimer for AES-CBC-128 weakness with simplepush://

[caronc]

Description:

Related issue (if applicable): n/a

Updated SendPush Wiki as well here with the following content:

🔒 AES-CBC-128 Encryption Weakness

The Apprise team recognizes that the encryption used by this plugin is AES-CBC-128 which has been identified to have weaknesses including being vulnerable to the padding oracle attack (Reference).

If the level of encryption is not satisfactory to you, your options are:

1. Reach out to SimplePush and ask for them to improve their security (to which Apprise will gladly accomodate) ...or
2. Choose not to use Simple Push and select one of the many other options available.

What is important to identify is this weak encryption used by Apprise to access SimplePush is in place for compliance only. This will never have any cascading effect or impact any other secure notification service also supported by Apprise.

Below is a screenshot from https://simplepush.io/features explaining the defined encryption setting from the upstream source:

Checklist

• The code change is tested and works locally.
• There is no commented out code in this PR.
• No lint errors (use flake8)
• 100% test coverage

Testing

Anyone can help test this source code as follows:

# Create a virtual environment to work in as follows:
python3 -m venv apprise

# Change into our new directory
cd apprise

# Activate our virtual environment
source bin/activate

# Install the branch
pip install git+https://github.com/caronc/apprise.git@simple-push-encryption-weak-id

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.36%. Comparing base (f656069) to head (9ee019c).
Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1215   +/-   ##
=======================================
  Coverage   99.36%   99.36%           
=======================================
  Files         148      148           
  Lines       20682    20682           
  Branches     4042     4042           
=======================================
  Hits        20551    20551           
  Misses        121      121           
  Partials       10       10           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.