![]() ![]() I suggest you read the full protocol specification here if you are interested about the technical implementation. Cryptocat now uses the standard XMPP-MUC protocol for multi-user Instant messaging transport.SHA-512 for generating 512-bit message authentication codes, shared secrets and key fingerprints. ![]() Curve25519 for Elliptic Curve public key generation.AES-CTR-256 for encryption and decryption.The developers have used the following algorithms and technologies to secure communication between users: Any non leaking VPN or proxy connection should suffice though. The developers suggest TOR to overcome this issue. ![]() It also needs to be noted that while chat is encrypted, your IP address is not. While you'd then see the new user in the user list, it may happen that you overlook that at first, or have troubles locating the user if there are lots of users in that chat room. It feels a bit strange that there is no option to password protect a chat room, considering that anyone guessing the name could enter it. Options are available to either chat privately with a select user, or publicly to the whole group of users. You see users who joined it on the right, and the actual messages on the left. The chat room looks like all other chat rooms you may have come across. The service creates an encryption key for you during set up. Instead of having to generate and exchange keys before you can even get started, you simply select the name of a chat room and a user name to connect. Probably the biggest difference to existing secure communication services is the ease of use with which you can get started. CryptocatĬryptocat, available as a browser extension for Firefox, Google Chrome and Safari, may be that alternative. You may use a desktop program for Windows, Mac or Linux instead, or switch to Cryptodog for Chrome which is a fork of the original extension. Note: Cryptocat was discontinued in 2016. ![]()
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