Gecko [ beacons-mine.com ]

Name	Size	Permission	Date
bigdecimal	[ DIR ]	drwxr-xr-x	2026-02-18 15:11
cgi	[ DIR ]	drwxr-xr-x	2026-02-18 15:11
date	[ DIR ]	drwxr-xr-x	2026-02-18 15:11
digest	[ DIR ]	drwxr-xr-x	2026-02-18 15:11
dl	[ DIR ]	drwxr-xr-x	2026-02-18 15:11
drb	[ DIR ]	drwxr-xr-x	2026-02-18 15:11
io	[ DIR ]	drwxr-xr-x	2026-02-18 15:11
irb	[ DIR ]	drwxr-xr-x	2026-02-18 15:11
net	[ DIR ]	drwxr-xr-x	2026-02-18 15:11
openssl	[ DIR ]	drwxr-xr-x	2026-02-18 15:11
optparse	[ DIR ]	drwxr-xr-x	2026-02-18 15:11
racc	[ DIR ]	drwxr-xr-x	2026-02-18 15:11
rdoc	[ DIR ]	drwxr-xr-x	2026-02-18 15:11
rexml	[ DIR ]	drwxr-xr-x	2026-02-18 15:11
rinda	[ DIR ]	drwxr-xr-x	2026-02-18 15:11
rss	[ DIR ]	drwxr-xr-x	2026-02-18 15:11
runit	[ DIR ]	drwxr-xr-x	2026-02-18 15:11
shell	[ DIR ]	drwxr-xr-x	2026-02-18 15:11
soap	[ DIR ]	drwxr-xr-x	2026-02-18 15:11
test	[ DIR ]	drwxr-xr-x	2026-02-18 15:11
uri	[ DIR ]	drwxr-xr-x	2026-02-18 15:11
webrick	[ DIR ]	drwxr-xr-x	2026-02-18 15:11
wsdl	[ DIR ]	drwxr-xr-x	2026-02-18 15:11
x86_64-linux	[ DIR ]	drwxr-xr-x	2026-02-18 15:11
xmlrpc	[ DIR ]	drwxr-xr-x	2026-02-18 15:11
xsd	[ DIR ]	drwxr-xr-x	2026-02-18 15:11
yaml	[ DIR ]	drwxr-xr-x	2026-02-18 15:11
English.rb	5.6 KB	-rw-r--r--	2007-02-13 04:31
Env.rb	274 B	-rw-r--r--	2007-02-13 04:31
abbrev.rb	2.5 KB	-rw-r--r--	2007-02-13 04:31
base64.rb	3.37 KB	-rw-r--r--	2007-07-16 21:17
benchmark.rb	17.73 KB	-rw-r--r--	2008-02-10 20:54
cgi-lib.rb	6.89 KB	-rw-r--r--	2007-02-13 04:31
cgi.rb	73.74 KB	-rw-r--r--	2009-12-14 08:10
complex.rb	12.84 KB	-rw-r--r--	2009-08-03 11:29
csv.rb	24.46 KB	-rw-r--r--	2007-02-13 04:31
date.rb	53.02 KB	-rw-r--r--	2010-06-08 10:15
date2.rb	128 B	-rw-r--r--	2007-02-13 04:31
debug.rb	20.61 KB	-rw-r--r--	2007-02-13 04:31
delegate.rb	8.81 KB	-rw-r--r--	2009-07-16 06:05
digest.rb	1.12 KB	-rw-r--r--	2007-07-28 06:10
drb.rb	19 B	-rw-r--r--	2007-02-13 04:31
e2mmap.rb	4.04 KB	-rw-r--r--	2007-02-13 04:31
erb.rb	21.38 KB	-rw-r--r--	2009-02-23 23:14
eregex.rb	487 B	-rw-r--r--	2007-02-13 04:31
expect.rb	633 B	-rw-r--r--	2008-02-18 06:47
fileutils.rb	42.23 KB	-rw-r--r--	2011-05-21 03:59
finalize.rb	5.38 KB	-rw-r--r--	2007-02-13 04:31
find.rb	1.84 KB	-rw-r--r--	2007-02-13 04:31
forwardable.rb	6.16 KB	-rw-r--r--	2008-06-06 13:35
ftools.rb	6.17 KB	-rw-r--r--	2007-02-13 04:31
generator.rb	8.1 KB	-rw-r--r--	2008-04-10 16:22
getoptlong.rb	14.88 KB	-rw-r--r--	2007-02-13 04:31
getopts.rb	2.25 KB	-rw-r--r--	2007-02-13 04:31
gserver.rb	6.43 KB	-rw-r--r--	2007-02-13 04:31
importenv.rb	590 B	-rw-r--r--	2007-02-13 04:31
ipaddr.rb	21.96 KB	-rw-r--r--	2008-07-12 20:38
irb.rb	7.43 KB	-rw-r--r--	2009-08-09 14:14
jcode.rb	4.3 KB	-rw-r--r--	2007-02-13 04:31
kconv.rb	8.12 KB	-rw-r--r--	2007-02-13 04:31
logger.rb	17.59 KB	-rw-r--r--	2011-05-30 07:38
mailread.rb	1.28 KB	-rw-r--r--	2007-02-13 04:31
mathn.rb	5.42 KB	-rw-r--r--	2007-02-13 04:31
matrix.rb	27.21 KB	-rw-r--r--	2009-01-24 20:32
md5.rb	411 B	-rw-r--r--	2007-03-06 15:39
mkmf.rb	50.65 KB	-rw-r--r--	2010-12-04 12:04
monitor.rb	7.93 KB	-rw-r--r--	2009-11-25 13:15
mutex_m.rb	2.07 KB	-rw-r--r--	2007-02-13 04:31
observer.rb	5.15 KB	-rw-r--r--	2007-02-13 04:31
open-uri.rb	20.49 KB	-rw-r--r--	2007-10-08 16:46
open3.rb	2.1 KB	-rw-r--r--	2009-12-14 09:58
openssl.rb	575 B	-rw-r--r--	2010-11-22 12:51
optparse.rb	47.12 KB	-rw-r--r--	2009-02-20 17:13
ostruct.rb	3.35 KB	-rw-r--r--	2009-05-26 17:36
parsearg.rb	1.55 KB	-rw-r--r--	2007-02-13 04:31
parsedate.rb	1.33 KB	-rw-r--r--	2007-02-13 04:31
pathname.rb	29.39 KB	-rw-r--r--	2010-11-23 13:51
ping.rb	1.48 KB	-rw-r--r--	2007-02-13 04:31
pp.rb	15.97 KB	-rw-r--r--	2007-06-07 15:36
prettyprint.rb	18.33 KB	-rw-r--r--	2007-02-17 01:23
profile.rb	90 B	-rw-r--r--	2007-02-13 04:31
profiler.rb	1.59 KB	-rw-r--r--	2007-02-13 04:31
pstore.rb	11.15 KB	-rw-r--r--	2008-06-06 13:35
rational.rb	12.05 KB	-rw-r--r--	2010-06-08 10:32
readbytes.rb	835 B	-rw-r--r--	2007-02-13 04:31
resolv-replace.rb	1.55 KB	-rw-r--r--	2008-08-08 07:28
resolv.rb	56.83 KB	-rw-r--r--	2010-12-23 08:52
rss.rb	504 B	-rw-r--r--	2007-10-21 17:49
rubyunit.rb	180 B	-rw-r--r--	2007-02-13 04:31
scanf.rb	20.63 KB	-rw-r--r--	2009-01-20 08:53
securerandom.rb	4.27 KB	-rw-r--r--	2011-12-10 17:47
set.rb	27.08 KB	-rw-r--r--	2008-06-09 14:50
sha1.rb	418 B	-rw-r--r--	2007-03-06 15:39
shell.rb	4.66 KB	-rw-r--r--	2007-02-13 04:31
shellwords.rb	3.99 KB	-rw-r--r--	2008-03-21 17:46
singleton.rb	8.08 KB	-rw-r--r--	2008-07-03 16:44
sync.rb	6.09 KB	-rw-r--r--	2009-02-19 22:11
tempfile.rb	4.86 KB	-rw-r--r--	2008-04-21 15:13
thread.rb	104 B	-rw-r--r--	2007-02-14 01:09
thwait.rb	4.32 KB	-rw-r--r--	2010-06-08 12:38
time.rb	31.58 KB	-rw-r--r--	2008-06-06 13:35
timeout.rb	3 KB	-rw-r--r--	2010-06-08 11:54
tmpdir.rb	3.69 KB	-rw-r--r--	2009-01-26 07:42
tracer.rb	2.73 KB	-rw-r--r--	2007-02-13 04:31
tsort.rb	7.99 KB	-rw-r--r--	2007-02-13 04:31
un.rb	4.54 KB	-rw-r--r--	2007-02-13 04:31
uri.rb	710 B	-rw-r--r--	2008-04-15 15:11
weakref.rb	2.68 KB	-rw-r--r--	2007-02-13 04:31
webrick.rb	811 B	-rw-r--r--	2007-02-13 04:31
yaml.rb	12.36 KB	-rw-r--r--	2008-04-19 17:15

Rename

# = Secure random number generator interface.
#
# This library is an interface for secure random number generator which is
# suitable for generating session key in HTTP cookies, etc.
#
# It supports following secure random number generators.
#
# * openssl
# * /dev/urandom
#
# == Example
#
# # random hexadecimal string.
# p SecureRandom.hex(10) #=> "52750b30ffbc7de3b362"
# p SecureRandom.hex(10) #=> "92b15d6c8dc4beb5f559"
# p SecureRandom.hex(11) #=> "6aca1b5c58e4863e6b81b8"
# p SecureRandom.hex(12) #=> "94b2fff3e7fd9b9c391a2306"
# p SecureRandom.hex(13) #=> "39b290146bea6ce975c37cfc23"
# ...
#
# # random base64 string.
# p SecureRandom.base64(10) #=> "EcmTPZwWRAozdA=="
# p SecureRandom.base64(10) #=> "9b0nsevdwNuM/w=="
# p SecureRandom.base64(10) #=> "KO1nIU+p9DKxGg=="
# p SecureRandom.base64(11) #=> "l7XEiFja+8EKEtY="
# p SecureRandom.base64(12) #=> "7kJSM/MzBJI+75j8"
# p SecureRandom.base64(13) #=> "vKLJ0tXBHqQOuIcSIg=="
# ...
#
# # random binary string.
# p SecureRandom.random_bytes(10) #=> "\016\t{\370g\310pbr\301"
# p SecureRandom.random_bytes(10) #=> "\323U\030TO\234\357\020\a\337"
# ...

begin
  require 'openssl'
rescue LoadError
end

module SecureRandom
  # SecureRandom.random_bytes generates a random binary string.
  #
  # The argument n specifies the length of the result string.
  #
  # If n is not specified, 16 is assumed.
  # It may be larger in future.
  #
  # If secure random number generator is not available,
  # NotImplementedError is raised.
  def self.random_bytes(n=nil)
    n ||= 16
    if defined? OpenSSL::Random
      @pid = 0 if !defined?(@pid)
      pid = $$
      if @pid != pid
        now = Time.now
        ary = [now.to_i, now.usec, @pid, pid]
        OpenSSL::Random.seed(ary.join('.'))
        @pid = pid
      end
      return OpenSSL::Random.random_bytes(n)
    end
    if !defined?(@has_urandom) || @has_urandom
      @has_urandom = false
      flags = File::RDONLY
      flags |= File::NONBLOCK if defined? File::NONBLOCK
      flags |= File::NOCTTY if defined? File::NOCTTY
      flags |= File::NOFOLLOW if defined? File::NOFOLLOW
      begin
        File.open("/dev/urandom", flags) {|f|
          unless f.stat.chardev?
            raise Errno::ENOENT
          end
          @has_urandom = true
          ret = f.readpartial(n)
          if ret.length != n
            raise NotImplementedError, "Unexpected partial read from random device"
          end
          return ret
        }
      rescue Errno::ENOENT
        raise NotImplementedError, "No random device"
      end
    end
    raise NotImplementedError, "No random device"
  end

# SecureRandom.hex generates a random hex string.
  #
  # The argument n specifies the length of the random length.
  # The length of the result string is twice of n.
  #
  # If n is not specified, 16 is assumed.
  # It may be larger in future.
  #
  # If secure random number generator is not available,
  # NotImplementedError is raised.
  def self.hex(n=nil)
    random_bytes(n).unpack("H*")[0]
  end

# SecureRandom.base64 generates a random base64 string.
  #
  # The argument n specifies the length of the random length.
  # The length of the result string is about 4/3 of n.
  #
  # If n is not specified, 16 is assumed.
  # It may be larger in future.
  #
  # If secure random number generator is not available,
  # NotImplementedError is raised.
  def self.base64(n=nil)
    [random_bytes(n)].pack("m*").delete("\n")
  end

# SecureRandom.random_number generates a random number.
  #
  # If an positive integer is given as n,
  # SecureRandom.random_number returns an integer:
  # 0 <= SecureRandom.random_number(n) < n.
  #
  # If 0 is given or an argument is not given,
  # SecureRandom.random_number returns an float:
  # 0.0 <= SecureRandom.random_number() < 1.0.
  def self.random_number(n=0)
    if 0 < n
      hex = n.to_s(16)
      hex = '0' + hex if (hex.length & 1) == 1
      bin = [hex].pack("H*")
      mask = bin[0]
      mask |= mask >> 1
      mask |= mask >> 2
      mask |= mask >> 4
      begin
        rnd = SecureRandom.random_bytes(bin.length)
        rnd[0] = (rnd[0] & mask).chr
      end until rnd < bin
      rnd.unpack("H*")[0].hex
    else
      # assumption: Float::MANT_DIG <= 64
      i64 = SecureRandom.random_bytes(8).unpack("Q")[0]
      Math.ldexp(i64 >> (64-Float::MANT_DIG), -Float::MANT_DIG)
    end
  end
end