1. ChatLiner is a messaging application with end-to-end encryption that ensures authentic encryption of transferred files and messages and prevents their modification, loss, damage or misuse. There is no compromising, interception or collection of users' personal data or sensitive data from users' devices. 2. ChatLiner's ultimate goal is to protect user data, user privacy, and content shared online by using end-to-end encryption. 3. ChatLiner is software designed to work on a computer running the Microsoft Windows operating system. It is 100% safe to use and free of any viruses, malware or spyware. No registration or personal data entry required. Each user is represented by a user name of their own choice. 4. Files and messages stored on the server communicating with ChatLiner are deleted every two hours, leaving no traces behind. Should those who share files and messages scheduled for deletion be active at the time the files and messages are scheduled to be deleted, the deletion of the files and messages they exchanged will be postponed until the next cycle. 5. To ensure authentic encryption of transferred files and messages, ChatLiner relies on Digital Chip Card Locker technology, or DCCL for short. DCCL is applied to generate a cryptographic key pair consisting of a public key and a private key. The public DCCL key is publicly available, while the private DCCL key must be kept confidential and should never be shared with other people or exposed online. The DCCL keys are responsible for encrypting and decrypting files and messages exchanged within the ChatLiner application. The rule that ChatLiner adheres to is that the private DCCL key may or may not be stored locally on your computer, but is never shared with anyone, uploaded anywhere, or stored in any remote location. 6. To decrypt files and messages encrypted by ChatLiner, you must be able to reproduce the DCCL algorithms and obtain the corresponding private key. 7. ChatLiner does not encrypt the connection between client and server (as is the case with HTTPS or SFTP), because it is not necessary. The application encrypts files, text messages, and voice messages on the client side before sending them, making them unreadable to everyone except those for whom they are intended. 8. Once encrypted with the recipient's public key on the sender's side, the message is sent to a remote database server that works in conjunction with ChatLiner and acts as an intermediary between the two interlocutors. The message cannot be decrypted on this server (or any other server), so it will be left intact and forwarded to the recipient as such. The content of the message or file being sent will be revealed using the recipient's private key when it reaches its destination, with no chance of anyone decrypting it at any point before. 9. Sending text and audio messages through ChatLiner is free. You can send an unlimited number of messages. You can also record and send an encrypted audio (voice) message. This message is encrypted before being sent and only the recipient (i.e. the person to whom the message is addressed) can decrypt and play it back using their private key. 10. The programs that are necessary for the operation of the ChatLiner application are located in the directory C:/Program Files/ChatLiner. You may not modify, alter or remove these files. Licensor is not responsible for ChatLiner performance issues that may occur if the files located in C:/Program Files/ChatLiner are modified, altered, or removed. 11. During installation, the C:/chatliner directory is created. This is the working directory for the ChatLiner application. You may not modify, alter or remove files stored in the working directory. Licensor is not responsible for ChatLiner performance issues that may occur if the files located in C:/chatliner are modified, altered, or removed. 12. When a new user (or group) is created, a unique digital ID card associated with that user (or group) name is automatically generated. You will be required to attach and verify your card each time you wish to log into the system or change your user details. Please keep this file private and do not share it with anyone. 13. A DCCT-based ID card is digitally signed and filled with associated metadata, barcodes and security tags in such a way that it can no longer be forged, altered or damaged. A DCCT-based ID card cannot expire, but it also cannot be revoked, renewed or recreated if lost or deleted, nor can it be repaired and reused if corrupted. 14. By default, the digital ID card is stored in the C:/digital-identity-card folder. You can leave it there or save it to another folder or device as you see fit (your phone, for example). Make sure you remember the location of your digital ID card so you can use it later. 15. During installation, the C:/downloads directory is created. The files downloaded from the server that communicates with ChatLiner are located in the C:/downloads folder on your computer. You can access your saved files at any time. 16. After ChatLiner has been closed, there are no instances of this program left active. This means that there is no instance of ChatLiner running in the background collecting data from your computer without your knowledge. 17. Your username remains recorded in a separate file in the local C:/chatliner folder on your computer so you don't have to enter it over and over again. This file can in no way compromise the security of data exchanged within ChatLiner or the privacy of users. 18. The usernames of those you chat with remain recorded in a separate file in the local C:/chatliner folder on your computer so that you do not have to enter them over and over again. This file can in no way compromise the security of data exchanged within ChatLiner or the privacy of users. 19. So you don't have to enter them again and again, the public and private keys you use are encrypted and remain recorded as encrypted in separate files in the local C:/chatliner folder on your computer. These files cannot in any way compromise the security of data exchanged within ChatLiner or the privacy of users. 20. The messages you have exchanged with other users are encrypted and remain recorded as encrypted in separate files in the local C:/chatliner/archives folder on your computer. These files cannot in any way compromise the security of data exchanged within ChatLiner or the privacy of users. 21. At each new login, if more than 2 hours have passed since the last login, all files located in the local C:/chatiner/archives folder on your computer are deleted, without exception. 22. The files and messages you exchange through the ChatLiner application are encrypted and ChatLiner has no insight into their content. You are fully responsible for the content of the files and messages you exchange through the ChatLiner application. 23. You are entirely responsible for who you share files and messages with via ChatLiner. 24. Licensor does not claim any ownership rights to the content you exchange within ChatLiner. You will continue to own your content and may use it in any way you choose. 25. You may terminate this Agreement at any time. 26. Licensor may prohibit your use of this Software at any time due to your potential violation of this Agreement. 27. Licensor may terminate this Agreement at any time due to your potential breach of this Agreement.