In case anyone's concerned, Erlang's random module is not meant to be used for cryptographic purposes. Quoting from a follow-up msg [0] by Anthony Ramine in th

In case anyone's concerned, Erlang's random module is not meant to be used for cryptographic purposes. Quoting from a follow-up msg [0] by Anthony Ramine in that thread: The Erlang documentation says: > It should be noted that this random number generator is not cryptographically strong. If a strong cryptographic random number generator is needed for example crypto:rand_bytes/1 could be used instead. I am not sure I understand the alarming tone. (Here's the Erlang docs page for the random module being referred to: [1]). And, for a really comprehensive (and thus a bit long) look at random-number generation and Erlang, the next msg after in the thread [2], by Jesper Louis Andersen is worth reading. [0] http://erlang.org/pipermail/erlang-questions/2014-December/082260.html http://erlang.org/pipermail/erlang-questions/2014-December/0... [1] http://erlang.org/doc/man/random.html http://erlang.org/doc/man/random.html [2] http://erlang.org/pipermail/erlang-questions/2014-December/082262.html http://erlang.org/pipermail/erlang-questions/2014-December/0...