This library is an Erlang interface to the TweetNaCl cryptographic functions. It is meant to encrypt/decrypt small messages (< 30k) and not bulk data.
The design goals for this project are:
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Keep the implementation as minimal and simple as possible to allow for easy security review.
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Prioritize simplicity and robustness over performance.
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Focus on supporting enc/dec for small messages.
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Focus on UNIX systems.
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Support for Erlang runtime code upgrades is not a priority.
In order to execute as regular NIFs, without degrading Erlang VM scheduler performance, the maximum message size for encryption / decryption has been capped at 30k. This to keep the execution time below 1ms (see http://erlang.org/doc/man/erl_nif.html).
Note that this library is currently work in progress.
Copyright (c) 2016 Ulf Leopold.