Table 1. Notation guide used in the cloud-based security model.
| Notation | Description |
|---|---|
| SndM | Message sending algorithm |
| AcD | Account details algorithm |
| Misc | Another info-based algorithm |
| DelivM | Message delivery |
| AcK | Acknowledgment algorithm |
| C | Encrypted text |
| V | Vector of encrypted texts |
| m | Message |
| IDu | Unique user identifier |
| id | Unique reference string |
| mt | Message text |
| t | Time |
| Cn | User’s account name or title |
| Uno | User’s contact number |
| ls | Last seen |
| Ua | User about (bio) |
| UGiC | User groups in common |
| Umld | User media, links, documents |
| snd | Sending algorithm |
| rsv | Receiving algorithm |