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Quantum-proof encryption for any email, plus Passwords. ⚠️ NOTICE: KYBERLOCK UNIVERSAL HAS EVOLVED INTO PRIVACY BAR ⚠️ This legacy "Universal" extension is no longer actively updated for new web page layouts. To get the latest post-quantum security, cross-platform compatibility, and seamless real-time page interactions, please install our flagship Chrome Extension: Privacy Bar. Privacy Bar contains the exact same serverless, post-quantum Crystals-Kyber encryption and SynthPass password management engines you trust, but features a massively upgraded, actively maintained interface that integrates effortlessly into your favorite webmail and texting apps. 👉 Search the Chrome Web Store for "Privacy Bar" or visit privacybar.net to upgrade. ORIGINAL DESCRIPTION (LEGACY): TAKE PRIVACY INTO YOUR OWN HANDS, NOW RESISTANT TO QUANTUM ATTACK Easy, end-to-end secure encryption for email and other web-based communication systems, plus real-time chat, that does not rely on servers and is therefore immune to hacking or government intervention. Very similar to PassLok Universal, also in this store, except that it is built on the recently standardized Crystals-Kyber engine for encryption resistant to quantum computers. KyberLock Universal is also a full-fledged password manager which, unlike most other managers out there, does NOT involve a server, yet it syncs between computers. Its password management engine is that of SynthPass, also in this store. And if you're not exchanging messages or filling passwords, clicking the KyberLock Universal icon will allow you to save secure notes on any website, or to load it into a special "Incognito" page that loads within the normal Chrome window. This function, also available via the right-click menu, is borrowed from Page Cage, also in this store. --KyberLock Universal is incredibly easy to use-- To encrypt a message or file, just click the KyberLock icon when the email service's Compose or Reply window is visible. A popup will take your private message and encrypt it with the click of a button. Then you can send it out like any other message, or as an attachment. To decrypt it, display the encrypted message and click the KyberLock icon. A popup will show the decrypted message or file immediately, if there is one. KyberLock asks you for your secret Key only once. It can be anything you want, so you can actually remember it. KyberLock will evaluate its strength and compensate for its weakness by lengthening the computations. It won't be stored or sent anywhere, and KyberLock will forget it after five minutes of inactivity. If you want to change your secret Key, go ahead and start using a new one when KyberLock asks you for it. You may be asked for the old secret Key if KyberLock can't decrypt something, but otherwise that's all you'll have to do. --Lots of power in a slender package-- You can use either of these five encryption modes, by just clicking a button: 1. Signed mode: encrypted messages can be decrypted again, so long as the recipients supply their authentic passwords. Recipients are also assured that the message was encrypted by the sender. 2. Read-once mode: after a few encrypted messages have been exchanged they can no longer be decrypted by anyone, even if they supply the correct passwords. 3. Chat mode: you can make invitations which, when decrypted by the recipients, open a webRTC real-time chat session where participants are directly connected to one another. The chat session includes text, files, audio, and even video. 4. Anonymous mode: for when you are using a dummy email account or otherwise do not wish to reveal your identity. 5. Shared password mode: most secure when you have previously shared a secret with the recipients KyberLock Universal allows you to encrypt files and images as well. Just load them with a toolbar button. You can also encrypt them separately and load them as regular attachments. For the very paranoid (and who isn't these days?), KyberLock Universal includes four special features: 1. Encrypt to image: the message is encrypted into an image you supply and then attach to your email, so the presence of a hidden message cannot be detected even by computer analysis. 2. Concealed mode: the encrypted message does not look encrypted, but actually looks like normal text. KyberLock still detects it and decrypts it normally, though. 3. Invisible mode: the encrypted material cannot be seen at all. It is hidden in the space between the lines of an otherwise normal message. 4. Hidden message: there is a hidden message in addition to the regular message, and it is encrypted by a separate key. The hidden message is completely undetectable to those who don't know it exists. Images also can contain hidden messages. --State-of-the art security-- KylerLock is based on Crystals-Kyber, the recent winner of a six-year international competition for the best encryption engine that is resistant to attack by quantum computers. On top of that, it uses the 256-bit XChaCha20 symmetric cipher, a high-performance, open source algorithm, which has been scrutinized by experts for nearly a decade without any practical weaknesses being found. The image-encryption part of KyberLock, developed in-house but open-source, has recently been shown to be much harder to detect than F5, the champion steganography tool until now. KyberLock does not use servers that might eventually compromise your private data. All encryption is done client-side. All data sent to the email server is encrypted, and they don't have the key that decrypts it. With KyberLock, you can actually SEE that that your messages have been encrypted. You can also see the code. KyberLock hides nothing from you. --KyberLock Universal may be the only password manager you'll ever use-- It's a different kind of password manager: it is a password synthesizer. With KyberLock Universal, there is no "vault" that has to be protected from hackers because your passwords are synthesized on the fly, just as you need them. KyberLock-made passwords are always high strength and comprise letters, numbers, and special characters. Passwords for different websites are guaranteed to be totally different. You never have to change your Master Password. When a website forces you to change its password, simply change the optional serial that is used to synthesize that password. KyberLock will remember the serial, as well as your user ID. Your Master Password will never be stored, and it disappears from memory after five minutes not using it. But if you absolutely must use a certain password, KyberLock got you covered too! It is encrypted before storage and synced with the browser itself, so no third parties need to be involved. Unlike conventional password managers, KyberLock - won't pop up and interrupt your flow; it is activated only when you click its icon on the browser toolbar - won't force you to store anything secret, only user IDs and optional serials, if you allow it - is always available, because it does not have to connect to "the Cloud" - makes only strong passwords - won't ask you for money - won't show ads KyberLock Universal uses the SynthPass engine, which is based on the WiseHash key-stretching algorithm. WiseHash evaluates the information entropy of your Master Password and subjects it to a variable number of rounds of SCRYPT key-stretching. The weaker the password, the more stretching. This forces would-be hackers to spend an inordinate amount of computer time testing weak passwords before they can get to yours. KyberLock displays an accurate measurement of your Master Password's entropy to help you come up with a strong one. --KyberLock Universal improves on Incognito mode-- If you are neither encrypting email nor filling passwords, clicking the KyberLock Universal icon displays a popup with two nifty functions: 1. You can save a note on any website, which syncs with it and is securely encrypted. Again, no servers involved. The content can be anything, not just passwords. 2. Or you can put the whole page into an "Isolation cage" similar to incognito mode, but running next to your regular tabs. The cage also contains links to Web search services that won't track you (or so they say, we don't make claims about it), and additional free apps in KyberLock's family. This is the same functionality as that of Page Cage, also in this store. KyberLock Universal is fully compatible with KyberLock and SynthPass, also in this store, and is now in public beta testing.