fix: adjust exceptionhandling for encryption

[Phil91]

Description

Exception-handling was added to the CryptoHelper to properly map the System-exceptions that are thrown by the Aes-classes to Configuration resp. ConflictExceptions

Why

To handle the exceptions thrown by the cryptoHandler to handle the failing process steps correctly

Issue

N/A

Checklist

• I have followed the contributing guidelines
• I have performed IP checks for added or updated 3rd party libraries
• I have created and linked IP issues or requested their creation by a committer
• I have performed a self-review of my own code
• I have successfully tested my changes locally
• I have added tests that prove my changes work
• I have checked that new and existing tests pass locally with my changes
• I have commented my code, particularly in hard-to-understand areas
• I have added copyright and license headers, footers (for .md files) or files (for images)

[sonarqubecloud]

Quality Gate failed

Failed conditions
76.5% Coverage on New Code (required ≥ 80%)

See analysis details on SonarCloud

[evegufy]

Quality Gate failed

Failed conditions 76.5% Coverage on New Code (required ≥ 80%)

See analysis details on SonarCloud

test coverage results will be ignored as they appear to be faulty: supposedly 12 changed lines without coverage - at the same time sonar shows it as if the new lines are all covered...