What is End-to-End Encryption
End-to-end encryption provides a system of communication that permits only the sender and the recipient of a message from reading the content of it.
In order to decrpyt the messages requires a cryptographic key that is automatically held by the sender and the recipient involved in the discussion and no one else, including the company providing the messaging service.
This form of messaging is more and more popular with messaging applications including WhatsApp and Facebook Messenger, who aim to provide a secure and private service to their users.
When a normal email is sent, it passes through various servers and is decrypted upon receipt, this means that any user with access to the final server, including the intended recipient and any authorities or eaves-dropper, containing the email will be able to browse the message and any attachments.
End-to-end encryption is designed to prevent the possibility of a third party being able to access messages sent between parties and either viewing or changing the content of that message.
When the message is sent it is automatically encrypted by the application, the key required to decrypt the message is held only by the intended recipient and is only decrypted when received by the intended recipient’s device.
The use of end-to-end encryption means that, unless the device containing the message is in the possession of another party or agency, the message content cannot be viewed and the companies that offer this level of encryption within their messaging service are unable to provide any of the messages sent and received over their networks as they are not able to decrypt them.
Curve25519 is an elliptic curve that offers 128 bit security and is designed for use with the elliptic curve Diffie-Hellman key agreement scheme.
Curve25519 was produced by Daniel J. Bernstein in 2005 and interest increased when, in 2013, it was discovered that the National Security Agency may have included a backdoor within Dual_EC_DRBG.
From 2014, Curve25519 became the standard in encrpytion and is currently used by mainstream applications such as Facebook Messenger, OpenSSH, Silent Phone, Tor, Viber and WhatsApp.
About Athena Forensics
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