The Foundation of Privacy

End-to-end encryption (E2EE) is a system of communication where only the communicating users can read the messages. In principle, it prevents potential eavesdroppers – including telecom providers, Internet providers, and even the provider of the communication service – from being able to access the cryptographic keys needed to decrypt the conversation.

At CipherDuck, this is not just a feature; it's our core philosophy. When you send a message, it is encrypted on your device and can only be decrypted by the recipient. We cannot read it. We cannot access it.

How Does it Work?

Without getting too technical, the process relies on a pair of keys for each user: a public key and a private key.

1. Public Key: You can share this with anyone. People use your public key to encrypt messages that only you can open.
2. Private Key: This key stays on your device and must never be shared. It's the only key that can decrypt messages that were encrypted with your public key.

When you use CipherDuck, your password helps generate and protect these keys, ensuring that even if our servers were compromised, your messages would remain as unreadable ciphertext.

It's More Than Just Secrecy

E2EE provides two crucial guarantees:

• Confidentiality: No one in the middle can read your data.
• Integrity: It ensures that the message was not tampered with in transit. If it was, the decryption would fail.

In a world where data breaches are common, E2EE is not a luxury; it's a necessity for any communication that you want to remain private.