Contacts & Keys

Manage your cryptographic key pair and import other users’ public keys to enable encrypted note sharing.

Your Key Pair

Go to Settings > Key Pair to view your key information:

Algorithm - RSA-2048
Created date - When the key was generated
SHA-256 fingerprint - A unique identifier for your public key (used to verify identity)
Public key (PEM) - The full public key text that others need to send you encrypted notes

You have three options:

QR Code - Tap “Show QR Code” and let the other person scan it
Copy - Copy the PEM text to clipboard and paste it in a message
Share - Use the Android share sheet to send it via any app

Your public key is safe to share. It can only be used to encrypt data for you - it cannot decrypt anything.

Managing Contacts

Go to Settings > Contacts to manage imported public keys.

Adding a Contact

Tap the + button
Enter the contact’s name
Paste their RSA public key in PEM format (the text starting with -----BEGIN PUBLIC KEY-----)
Tap Import

KeyScribe validates that the key is a valid RSA public key and checks for duplicates before saving.

Deleting a Contact

Tap on a contact and confirm deletion. This only removes the stored public key - it doesn’t affect any notes previously shared with that contact.

Key Fingerprints

Each public key has a SHA-256 fingerprint - a short hash like AB:CD:EF:12:... that uniquely identifies the key. Use fingerprints to verify you have the correct key for a contact, especially if the key was received over an insecure channel.