CipherLink
10+
Downloads
Everyone
info
About this app
CipherLink lets you encrypt messages and share them as QR codes — with no need for internet, accounts, or servers.
Built for privacy and offline communication, CipherLink uses 2048-bit RSA public-key encryption to keep your messages secure. Just generate, scan, and decode. It’s that simple.
Key Features
🔒 End-to-end RSA encryption
Encrypt messages using the recipient’s public key — only they can decrypt it.
📷 QR code generation & flexible scanning
Turn encrypted messages into QR codes that can be shown, shared, or printed.
Decrypt QR codes either with the camera or by sharing an image directly to CipherLink — no second device required.
📴 Works fully offline
No internet connection is ever required — ideal for air-gapped or low-trust environments.
🧩 Secure local storage
Keys are stored locally using Android Keystore.
🚫 No servers, no accounts, no tracking
All encryption and decryption happens locally on your device.
🧭 How It Works
Add a contact and register their RSA public key (can be scanned or shared via QR).
1. Write your message and select a recipient.
2. CipherLink encrypts the message and displays it as a QR code.
3. Share the QR visually or as an image — entirely offline.
4. The recipient scans the QR or shares the image to CipherLink to decrypt it.
Messages are never uploaded or sent through the app — you control how and when they’re shared.
🧑💻 Ideal for:
· Privacy-focused users
· Journalists, activists, or researchers in sensitive environments
· People communicating across air-gapped or untrusted networks
· Developers and tech users interested in public-key encryption
🛡️ Your Privacy, Your Control
CipherLink does not collect or share any user data.
No ads, no analytics, no cloud sync — and no hidden data access.
When decrypting from an image, the app only processes the image explicitly shared to it. CipherLink does not scan or access your gallery, files, or personal data.
Your keys stay on your device. Your messages stay private.
Just you, your contacts, and secure encrypted communication — fully offline, fully under your control.
Built for privacy and offline communication, CipherLink uses 2048-bit RSA public-key encryption to keep your messages secure. Just generate, scan, and decode. It’s that simple.
Key Features
🔒 End-to-end RSA encryption
Encrypt messages using the recipient’s public key — only they can decrypt it.
📷 QR code generation & flexible scanning
Turn encrypted messages into QR codes that can be shown, shared, or printed.
Decrypt QR codes either with the camera or by sharing an image directly to CipherLink — no second device required.
📴 Works fully offline
No internet connection is ever required — ideal for air-gapped or low-trust environments.
🧩 Secure local storage
Keys are stored locally using Android Keystore.
🚫 No servers, no accounts, no tracking
All encryption and decryption happens locally on your device.
🧭 How It Works
Add a contact and register their RSA public key (can be scanned or shared via QR).
1. Write your message and select a recipient.
2. CipherLink encrypts the message and displays it as a QR code.
3. Share the QR visually or as an image — entirely offline.
4. The recipient scans the QR or shares the image to CipherLink to decrypt it.
Messages are never uploaded or sent through the app — you control how and when they’re shared.
🧑💻 Ideal for:
· Privacy-focused users
· Journalists, activists, or researchers in sensitive environments
· People communicating across air-gapped or untrusted networks
· Developers and tech users interested in public-key encryption
🛡️ Your Privacy, Your Control
CipherLink does not collect or share any user data.
No ads, no analytics, no cloud sync — and no hidden data access.
When decrypting from an image, the app only processes the image explicitly shared to it. CipherLink does not scan or access your gallery, files, or personal data.
Your keys stay on your device. Your messages stay private.
Just you, your contacts, and secure encrypted communication — fully offline, fully under your control.
Updated on
Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
No data collected
Learn more about how developers declare collection
What’s new
First public version
App support
About the developer
Gabriel Otero Pérez
gabrieloteroperez@gmail.com
Spain
