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# encoding: utf-8
#
# A simple secret generator
#
# Uses OpenSSL random number generator instead of Ruby's rand function
#
autoload :OpenSSL, 'openssl'
module LeapCli; module Util
class Secret
CHARS = ('A'..'Z').to_a + ('a'..'z').to_a + ('0'..'9').to_a + "_".split(//u) - "io01lO".split(//u)
HEX = (0..9).to_a + ('a'..'f').to_a
#
# generate a secret with with no ambiguous characters.
#
# +length+ is in chars
#
# Only alphanumerics are allowed, in order to make these passwords work
# for REST url calls and to allow you to easily copy and paste them.
#
def self.generate(length = 16)
seed
OpenSSL::Random.random_bytes(length).bytes.to_a.collect { |byte|
CHARS[ byte % CHARS.length ]
}.join
end
#
# generates a hex secret, instead of an alphanumeric on.
#
# length is in bits
#
def self.generate_hex(length = 128)
seed
OpenSSL::Random.random_bytes(length/4).bytes.to_a.collect { |byte|
HEX[ byte % HEX.length ]
}.join
end
private
def self.seed
@pid ||= 0
pid = $$
if @pid != pid
now = Time.now
ary = [now.to_i, now.nsec, @pid, pid]
OpenSSL::Random.seed(ary.to_s)
@pid = pid
end
end
end
end; end
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