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Facebook’s groundbreaking Android security tool goes open source

The tool is based on algorithms from OpenSSL, a common open source encryption system for the web, but it’s designed specifically for mobile phones running Android — including low-end phones. The whole library takes up only about 85KB of space. “Unlike other libraries, which provide a wide range of encryption algorithms and options, Conceal prefers to abstract this choice and include sensible defaults,” Iyengar wrote in a blog post introducing the project. “We think this makes sense because encryption can be very tricky to get right.”