Tiny Chat
Tiny Chat is a free Secure Instant Messaging (IM) which lets you communicate with anyone on the Internet securely, using 256-bit Strong Encryption.

Whether you're discussing your company's strategies and trade secrets or writing a romantic note to your significant other, you have a very legitimate reason to ensure that only your intended recipient is reading what you have to say. Just as we put our letters in envelopes and curtains on our windows, it is only reasonable to take some basic steps to bring some actual privacy to our private Internet conversations. You shouldn't risk sensitive information being intercepted over a public IM network. Tiny Chat provides secure, fast and stable IM for you and your organization, using AES encryption with keys up to 256 bits. You get an isolated namespace with complete control over who has an account and what features are enabled.

Encryption
As with almost all implementations of public key cryptography, Tiny Chat uses a hybrid symmetrical/asymmetrical system. The public/private key encryption described above is the asymmetrical part. The operations required for this would be too time consuming to apply to large messages. Therefore, instead of using this method to encrypt and sign the message itself, it is used to encrypt and sign a symmetrical key. A symmetrical key, or session key, is a unique key which is randomly generated for each message, and both encrypts and decrypts the entire message.We use highly optimized code to allow the use of large key sizes while keeping all cryptographic operations virtually instantaneous. Encryption technology referred to as "Industrial Strength" typically uses 128-bit session keys and 1024-bit public/private key pairs. Tiny Chat uses 256-bit session keys and 2048-bit public/private key pairs. The main workhorse of Tiny Chat's cryptosystem is its AES. Tiny Chat's public/private key operations use the El Gamal Public Key algorithm. These operations essentially include the encryption of session keys (for use by the AES), and the signing of keys or hashes, as a means of authenticating the origin of keys or messages. Each member of the secure network generates two unique key-pairs, an encryption pair and a signature pair. Each of these key-pairs contains a private key and a public key. The private keys are encrypted and stored locally. The public keys are securely transmitted to the Tiny Chat server, and from there shared with anyone who wishes to securely communicate with you. After the Tiny Chat server authenticates your public keys, it attaches its own digital signature to them. This allows any user who wishes to communicate with you to know that the public keys being used are your genuine public keys and have not been tampered with, or substituted with someone else's public keys.

Download now for free and start communicating securely right away!

Upgrades: Upgrades are free.

System requirements: All Windows.

Algorithm: Tiny Chat uses the AES (256 bit keysize) and El Gamal (2048 bit keysize).