The phones automatically decrypt the conversation, but never actually see any keys or algorithms on either end. Vault takes care of encrypting the message and then sending it though as cypher text. Once the Vault micro SD is installed, the chat application just opens the virtualized two-file system with the read/write I/O. In a demo, ATAP showed how Vault could be used to secure a chat conversation.
The standard was introduced in August 1999 by joint efforts between SanDisk, Panasonic (Matsushita) and Toshiba as an improvement over MultiMediaCards (MMCs), and has become the industry standard. They’ve also built an enterprise-targeted first product version that’s being used internally at Google right now, and there are plans to eventually make consumer-focused hardware, too. Secure Digital, officially abbreviated as SD, is a proprietary non-volatile memory card format developed by the SD Association (SDA) for use in portable devices. Today, ATAP is releasing the open source development kit so that people can understand and test it prior to it going live. This also means that it works with any operating system, including Android, Windows, OS X and Linux, since essentially it’s just a generic storage device to the host computer or phone. Said file system includes just two files, one for read and one for write, that any app has to go through in order to communicate with Vault. Vault provides two-factor auth in a way that’s easy enough for anyone to use, and developers don’t have to do anything to get stuff ready to work with it – the system sees it as generic storage device with a standard file system.
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