Advantages of end-to-end encryption servicesĮnd-to-end encryption offers multiple advantages over other types of encryption. Services that use end-to-end encryption eliminate this possibility because the service provider does not actually possess the decryption key, making E2EE much more secure than other kinds of encryption. This means that the company can decrypt and access the contents of your message at any time. Most companies will then re-encrypt your message while it is stored on their servers, but using keys they control. However, once an email arrives at these companies’ servers, it is decrypted. When you use a standard email provider, such as Gmail or Hotmail, your emails will be protected in transit by (TLS). This works fine if you are connecting to a website to read its blog, but it is a problem if you’re sending an email. However, TLS is only implemented between you and a server, rather than between you and your recipient. TLS is the encryption used in HTTPS, and is responsible for encrypting most of the internet, including your connection to our blog right now. This differs from other types of encryption, such as Transport Layer Security (TLS. What is the difference between E2EE and other types of encryption?Įnd-to-end encryption is unique in comparison to other types of encryption because only the sender and receiver are able to decrypt and read the data that has been encrypted. When Alice wants to reply, she simply repeats the process, encrypting her message to Bob using Bob’s public key. Only Alice can decrypt the message with her private key when it lands in her inbox, as Alice is the only person that has access to her private key. Although those companies may try to read the message (or even share it with third parties), it is mathematically impossible for them to convert the ciphertext back into readable plaintext. Along the way, it may pass through multiple servers, including those belonging to their email service internet service providers. The public key can be shared with anyone, but only Alice has access to her private key.įirst, Bob uses Alice’s public key to encrypt the message, turning “Hello Alice” into ciphertext - scrambled, seemingly random characters.īob sends this encrypted message over the public internet. Alice has a public key and a private key, which are two mathematically related encryption keys. In the example below, Bob wants to say hello to Alice in private. To understand how end-to-end encryption works for email, it helps to look at a diagram. This is because only the recipient has the key to decrypt the encrypted data. When you use E2EE to send an email or message to someone, no one else can see the contents of your message - not your network administrator, not your internet service provider (ISP), not hackers, not the government, and not even the company (e.g., Proton Mail ) that facilitates your communication. “End-to-end” refers to the beginning of the data’s journey (in the case of email, this is the sender’s device) and where it ends its journey (the recipient’s device).Įnd-to-end encryption is a method of secure communication that prevents any third parties from accessing the contents of your message while it’s transferred from one device to another or while it is “at rest” on a server. What is end-to-end encryption (E2EE)?Įncryption is the process of scrambling human-readable data (for example, a plaintext email) into unreadable ciphertext that only authorized parties can only decode using the right cryptographic key.Įnd-to-end encryption is the term used for data that is encrypted at every stage of its journey from one device to another. In this article, we will explain what end-to-end encryption is and what advantages it offers over other types of encryption. However, recent technological advances (such as Proton Mail ) have made end-to-end encryption much easier to use and more accessible. An early iteration of E2EE for email, known as Pretty Good Privacy (PGP), required you to handle the encryption keys yourself, making it notoriously difficult even for tech-savvy users. If you send an end-to-end encrypted email, it is encrypted on your device (your iPhone, Android, or laptop), and it is not decrypted until it reaches the device of the person you sent the message to.Įnd-to-end encryption (E2EE) has historically been very complicated, which limited who could effectively use it. The most private and secure way to communicate online is by using end-to-end encryption. Last update on JanuPublished on May 24, 2022
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