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BearSSL is an implementation of the SSL/TLS protocol (RFC 5246)
written in C. It aims at offering the following features:
* Be correct and secure. In particular, insecure protocol versions
and choices of algorithms are not supported, by design;
cryptographic algorithm implementations are constant-time by
default.
* Be small, both in RAM and code footprint. For instance, a minimal
server implementation may fit in about 20 kilobytes of compiled
code and 25 kilobytes of RAM.
* Be highly portable. BearSSL targets not only "big" operating
systems like Linux and Windows, but also small embedded systems
and even special contexts like bootstrap code.
* Be feature-rich and extensible. SSL/TLS has many defined cipher
suites and extensions; BearSSL should implement most of them,
and allow extra algorithm implementations to be added afterwards,
possibly from third parties.
bearssl is considered alpha-quality software, which means that it
runs but it probably has bugs, some of which being certainly
exploitable vulnerabilities.
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