Welcome to the CalyptoKey Glossary

Key Terms

End-to-End Encryption

End-to-end (E2E) encryption is a secure communication method whereby information is encrypted on the sender's device before being sent out on a potentially unsecure communication channel and only decrypted on the receiver's device. Any intermediary that captures or reads the data cannot decrypt it without the corresponding key, which is to be kept secret. E2E encryption is implemented using either symmetric or asymmetric cryptography, and typically involves secure key establishment between the communicating parties. E2E encryption protects data in transit, but not necessarily on the device itself.