Cult of the dead cow，是一个著名的由黑客和计算机安全专家组成的国际组织，就是曾经“风靡一时”的BackOrifice的创造者，日前发布一款用户友好、免费、开源的工具软件ScatterChat，该软件提供端对端的加密，保护IM软件的匿名通信和安全的文件传送。目前该软件支持AOL，Yahoo！和MSN的消息加密，还提供MSN的文件加密。ScatterChat使用2048-bit ElGamal 和 1024-bit DSA用于加密设置和认证，针对每一次新的对话，它都会产生一个新的256-bit AES message key, 一个256-bit SHA-1 HMAC key, a一个256-bit nonce和 一个256-bit AES file transfer key，能防止Replay Attacks等，下面是它的官方介绍：
ScatterChat is a HACKTIVIST WEAPON designed to allow non-technical human rights activists and political dissidents to communicate securely and anonymously while operating in hostile territory. It is also useful in corporate settings, or in other situations where privacy is desired.
It is a secure instant messaging client (based upon the Gaim software) that provides end-to-end encryption, integrated onion-routing with Tor, secure file transfers, and easy-to-read documentation.
Its security features include resiliency against partial compromise through perfect forward secrecy, immunity from replay attacks, and limited resistance to traffic analysis… all reinforced through a pro-actively secure design.
这款工具用在需要它的地方:wink:，比如你通过MSN谈生意或者和密友聊一些很隐私的内容却担心这些对话被人监听（尤其是在企业内部网中），那么或许你应该使用它。
PS：我预计该软件的网站很快会被封，原因还用说吗？:evil:
友情提示：如果你对黑客们做出的安全软件不放心，那么请慎用！
Via：Secure Instant Messenger - ScatterNet Released by Hackers
