module OpenSSL::Random

Reads bytes from filename and adds them to the PRNG.

Mixes the bytes from str into the Pseudo Random Number Generator(PRNG) state.

Thus, if the data from str are unpredictable to an adversary, this increases the uncertainty about the state and makes the PRNG output less predictable.

The entropy argument is (the lower bound of) an estimate of how much randomness is contained in str, measured in bytes.

Example

pid = $$
now = Time.now
ary = [now.to_i, now.nsec, 1000, pid]
OpenSSL::Random.add(ary.join, 0.0)
OpenSSL::Random.seed(ary.join)

Generates a String with length number of cryptographically strong pseudo-random bytes.

Example

OpenSSL::Random.random_bytes(12)
#=> "..."

::seed is equivalent to ::add where entropy is length of str.

Return true if the PRNG has been seeded with enough data, false otherwise.

Writes a number of random generated bytes (currently 1024) to filename which can be used to initialize the PRNG by calling ::load_random_file in a later session.