এনক্রিপ্টেড চ্যাট রুম Guide: Truly Private Conversations Even the Server Can't Read

When most messengers claim to offer "private conversations," the messages are usually still stored on their servers. If server data is exposed through a court order or a hack, your conversations can be revealed.

LOCK.PUB's এনক্রিপ্টেড চ্যাট রুমs are different. With এন্ড-টু-এন্ড এনক্রিপশন (E2E), only এনক্রিপ্টেড data is stored on the server, and only participants who know the password can decrypt the content. Not even the server operators can read your conversations.

How Does It Work?

এনক্রিপশন Mechanism

sequenceDiagram
    participant A as Participant A (Browser)
    participant S as Server
    participant B as Participant B (Browser)
    A->>A: AES encryption (password)
    A->>S: Send encrypted message
    Note over S: Only ciphertext stored<br/>Content unreadable
    S->>B: Deliver encrypted message
    B->>B: AES decryption (same password)

The password is never sent to the server. Only the SHA256 hash of the password is used for অথেন্টিকেশন, while the original password is used exclusively in the browser for এনক্রিপশন and decryption.

কীভাবে ব্যবহার করবেন

1. Create a চ্যাট রুম -- Set a password and create the room
2. Share the link -- Send the চ্যাট রুম link to participants
3. Share the password -- Send the password through a separate channel
4. Start chatting -- Participants enter the password and can start chatting immediately

চ্যাট রুম Features

Complete Anonymity

Anyone can join সাইন আপ ছাড়া. Participants choose their own nickname and are assigned a random color. No IP addresses or personal information are collected.

এন্ড-টু-এন্ড এনক্রিপশন

All messages are protected with AES এনক্রিপশন. Not only the message content, but also nicknames and color information are এনক্রিপ্টেড together.

flowchart LR
    subgraph Encrypted
        A[Message text]
        B[Participant nickname]
        C[Participant color]
    end
    subgraph Not encrypted
        D[Timestamp]
    end

Real-Time Chat

Messages are delivered instantly using Firestore's real-time synchronization. New messages appear automatically without needing to refresh.

Message History

When you enter a চ্যাট রুম, the most recent 50 messages are displayed. Scroll up to load older messages.

কখন ব্যবহার করবেন It

Sensitive Business Discussions

Use it for project discussions with confidentiality concerns, HR-related conversations, contract negotiations, and more. When the conversation is over, simply let the চ্যাট রুম expire.

অ্যানোনিমাস Feedback Collection

Perfect for getting honest feedback from team members. Since participation is অ্যানোনিমাস, people can share their true opinions freely.

Emergency Information Exchange

Quickly share access credentials or রিকভারি কোড during emergencies like server outages.

Secret Event Planning

Use it for planning surprise parties, gifts, or any conversation that the intended person shouldn't see.

নিরাপত্তা টিপস

Password Strength

The security of the চ্যাট রুম depends on the password strength, as it serves as the AES এনক্রিপশন key.

• 1234 -- Too weak
• password -- Too guessable
• TeamMeeting-Feb! -- A combination only participants would know
• Project-X-2026#Feb -- Sufficiently complex

Expiration Time (Pro)

With the Pro plan, আপনি পারেন set an expiration time for চ্যাট রুমs. Leaving a চ্যাট রুম active after the conversation ends is a security risk, so set an appropriate expiration time:

Use Case	Recommended Expiration
Emergency info exchange	1 hour
One-time meeting discussion	24 hours
Project-duration conversation	7 days

তুলনা with Regular Messengers

	WhatsApp	Telegram Secret Chat	LOCK.PUB চ্যাট রুম
Plaintext stored on server	Yes	No	No
Signup required	Yes	Yes	No
Personal data collected	Yes	Yes (phone number)	No
Auto-expiration	No	Available	Yes (Pro)
অ্যানোনিমাস participation	No	No	Yes
Works in browser only	No	Partial	Yes

Free vs Pro

	Free	Pro
Chat room creation	15/month (all types combined)	Unlimited
Messages	50 per room	Unlimited
Expiration time	No	Yes
Message length	200 characters	200 characters

শুরু করুন

এনক্রিপ্টেড চ্যাট রুমs are free to create. Use them right in your web browser -- no app installation needed.

Create an এনক্রিপ্টেড চ্যাট রুম ->