How Can We Help You?

To create an account:

1. Open the app and tap "Sign Up"
2. Enter your email and create a strong password
3. Verify your email address
4. Set up your encryption keys (automatically generated)
5. Set a PIN for quick access

Your encryption keys are stored only on your device for maximum security.

Trust establishment verifies that you're communicating with the correct person:

• Unknown: Contact not verified
• Pending: Trust request sent, waiting for call verification
• Trusted: Verified via voice call
• Verified: Highest trust level with confirmed identity

Only verified contacts can receive secure messages.

You can verify a contact with a voice call:

1. Add the contact to your list
2. Tap "Establish Trust"
3. Make a voice call to verify identity
4. Both parties confirm during the call
5. Contact becomes "Verified"

This prevents man-in-the-middle attacks and ensures authentic identity.

kryptem uses end-to-end RSA-2048 encryption:

• Messages are encrypted on your device
• Only the recipient can decrypt them
• Server cannot read your messages
• Private keys never leave your device

You can only send secure messages to verified contacts.

Your messages remain secure:

1. Private keys are stored in device-protected storage
2. Encrypted with your password
3. Cannot be extracted without device PIN/biometrics
4. Contact support to freeze your account
5. Set up a new device with recovery email

Always set up a recovery email during registration.

Your encryption keys are generated and stored securely on your device, protected by your password and device security (PIN/biometrics). We never have access to your keys or unencrypted messages.

Your keys never leave your device except as encrypted backups you control.

Zero-knowledge means:

• We never see your private keys
• We cannot decrypt your messages
• We cannot access your data
• Only you control your encryption

Even if our servers are compromised, your data remains encrypted.

Change your password immediately and review your trusted contacts. Enable all available security features in your account settings.

For urgent security concerns, contact: security@kryptem.net

This can happen if encryption keys are out of sync. Try refreshing your contacts or asking the sender to do the same.

If the issue persists, please contact support@kryptem.net

Try restarting the app and ensuring you have the latest version installed.

If the problem continues, please contact support@kryptem.net