![]() In fact, the encrypted email can now only be decrypted by the Proton Mail account owner.Ģ. Afterwards, we are no longer able to decrypt the message. However, after receiving the email, we encrypt it immediately using the Proton Mail account owner’s public encryption key. When it arrives at Proton Mail, our servers can read that email because Gmail does not support end-to-end encryption. Someone using a Gmail account sends an email to a Proton Mail account. To understand the difference, consider two scenarios:ġ. How is zero-access encryption different from end-to-end encryption?Īt Proton Mail, we use both zero-access encryption and end-to-end encryption (new window) to protect your data. When the data owner wants to view their data, they request the encrypted files from the server and decrypt them locally on their device, not on the server. Because the server does not have access to the user’s private encryption key, once the files are encrypted with the user’s public encryption key they are no longer accessible to the server or the server’s owner. The files can only be decrypted using the user’s private encryption key. Zero-access encryption is just what it sounds like: a type of encryption (new window) for data at rest that renders digital files inaccessible to the service provider. ![]() ![]() Zero-access encryption ensures that only you, the data owner, have the technical ability to read your data. With this type of encryption, even if hackers were to breach the provider’s servers and steal your files, they would not be able to decrypt the data. Zero-access encryption is a way of protecting data at rest - that is, while the information is sitting in storage on the cloud. ![]() There are ways, however, to encrypt your data so that only you can access it, and zero-access encryption is one of these methods. When you save a document to Google Drive, a photo album to iCloud, or an intimate conversation to Facebook Messenger, you are trusting that this information will not be breached or misused. ![]() But that’s essentially what we do every time we store chat histories, email, documents, and pictures on the cloud. Most of us would not give our private, personal information to strangers and then trust them not to leak it. ![]()
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