# Encryption

Encryption is one of the key parts of the infrastructure. There are three options available:

1. **Custom encryption**

   Integrators have the option to develop their own specific encryption implementations.
2. **AES**

   Natively AES-256-GCM (i.e. Advanced Encryption Standard) is used for the encryption algorithm. The secret key can be randomly generated or imported.
3. **AES - ECDH** (i.e. Elliptic-Curve Diffie-Hellman)

   Natively AES-256-GCM is used for the encryption algorithm. The secret key is produced with ECDH secret key exchange. The sender needs the receiver [Encryptor extension](https://chrome.google.com/webstore/detail/encryptor/feolajpinjjfikmmeknkdjbllbppojij) public key to be recorded on the blockchain. Encryptor extension is used to calculate the shared secret key.