class Phpass

# File lib/phpass.rb, line 8
def initialize(iter=8)
  iter = 8 unless (8..30).include?(iter)
  @iter = iter
end

# File lib/phpass.rb, line 23
def self.random_bytes(length)
  out = ''
  if File.readable?('/dev/urandom')
    out = File.read('/dev/urandom', length)
  end

  if(out.length < length)
    random_state = '%s%s' % [Time.now.to_f, $$]
    out = ''
    while out.length < length
      rnd = Digest::MD5.hexdigest(Time.now.to_f.to_s + random_state)
      out << Digest::MD5.digest(rnd)
    end
    out = out[0..length]
  end
  out
end

# File lib/phpass.rb, line 18
def check(pw, hash)
  hasher = Md5.new(@iter)
  hasher.check(pw, hash)
end

# File lib/phpass.rb, line 13
def hash(pw, alg=:md5)
  hasher = Md5.new(@iter)
  hasher.hash(pw)
end