* web: decrypt PSK-1 unencrypted messages on arrival
* web: address review comments
* web: use proper psk to decrypt instead of alias
* cover missing unit test vectors
* tests: run black formatter
* web: fix tests
* web: refine decryption data processing logic
* web: address review comments
* web: cover missing unit test vectors
* web: cover missing unit test vectors
* web: cover missing unit test vectors
* web: cover missing unit test vectors