C///

\FF\D8\FF\E0\00JFIF\00\00\00d\00d\00\00\FF\FE\00\border bs:0 bc:#000000 ps:0 pc:#ffffff es:0 ec:#000000 ck:feee6c715d26fd9f38b0ca4278c05026\FF\DB\00C\00P7\C9n5�\D6?\BD�\9Ds\EBp\9F[`8m\B7)o\B5\E8\E6I\99\FE3]]A2\BA\8Cw\D6E\93\\DEv\C8\009\F2\F1NI?uc\\F5\EA\96k\xN<~buv\EA\C8\D7 \8B\84\CEcxI\BBg\AE\9E=\D6+n\EC\80\C8A\8C\AE\EB\CF\D5\DA\E9"2\A4\B9j5\EB\F3W\B63\96\B30Yu\DA\FC8\ED\DF\E7Ms\FB\F1\8E\B3\FA\EA\E8\E6(\883zs\F2_\8DFk\8Bh \00\8C\DCw\D3R\B5+6X\BA\B2\C4j\AB0\B4\FCMw\C2I\8E\9B\E3\A9~9u\FA\D3l\80\C8%p\EE\FDn2� \00$\FEj\C4e\A9\DB\~\95\A7\A5\80EK\BB\8DDsP\00@@AD'k\CF\E8\DB\D2(\80\9AK\D3\85\D6lb\F2\BA\8C*\80\00)\95 59\A3R:\F3\CE"\B6\80\88\00\00i1u4�\E9\F2�\A6\A2\FACM\93WMb*\E0*\00\00\00\00\00(\A8\80\00\00\80\00\00\00\00\00\00\00\00\00\FF\D9 C/// # -*- coding: us-ascii -*- # frozen_string_literal: true begin require 'openssl' rescue LoadError end # == Secure random number generator interface. # # This library is an interface to secure random number generators which are # suitable for generating session keys in HTTP cookies, etc. # # You can use this library in your application by requiring it: # # require 'securerandom' # # It supports the following secure random number generators: # # * openssl # * /dev/urandom # * Win32 # # === Examples # # Generate random hexadecimal strings: # # require 'securerandom' # # p SecureRandom.hex(10) #=> "52750b30ffbc7de3b362" # p SecureRandom.hex(10) #=> "92b15d6c8dc4beb5f559" # p SecureRandom.hex(13) #=> "39b290146bea6ce975c37cfc23" # # Generate random base64 strings: # # p SecureRandom.base64(10) #=> "EcmTPZwWRAozdA==" # p SecureRandom.base64(10) #=> "KO1nIU+p9DKxGg==" # p SecureRandom.base64(12) #=> "7kJSM/MzBJI+75j8" # # Generate random binary strings: # # p SecureRandom.random_bytes(10) #=> "\016\t{\370g\310pbr\301" # p SecureRandom.random_bytes(10) #=> "\323U\030TO\234\357\020\a\337" # # Generate UUIDs: # # p SecureRandom.uuid #=> "2d931510-d99f-494a-8c67-87feb05e1594" # p SecureRandom.uuid #=> "bad85eb9-0713-4da7-8d36-07a8e4b00eab" # module SecureRandom if defined?(OpenSSL::Random) && /mswin|mingw/ !~ RUBY_PLATFORM def self.gen_random(n) @pid = 0 unless defined?(@pid) pid = $$ unless @pid == pid now = Process.clock_gettime(Process::CLOCK_REALTIME, :nanosecond) ary = [now, @pid, pid] OpenSSL::Random.random_add(ary.join("").to_s, 0.0) seed = Random.raw_seed(16) if (seed) OpenSSL::Random.random_add(seed, 16) end @pid = pid end return OpenSSL::Random.random_bytes(n) end else def self.gen_random(n) ret = Random.raw_seed(n) unless ret raise NotImplementedError, "No random device" end unless ret.length == n raise NotImplementedError, "Unexpected partial read from random device: only #{ret.length} for #{n} bytes" end ret end end end module Random::Formatter # SecureRandom.random_bytes generates a random binary string. # # The argument _n_ specifies the length of the result string. # # If _n_ is not specified or is nil, 16 is assumed. # It may be larger in future. # # The result may contain any byte: "\x00" - "\xff". # # p SecureRandom.random_bytes #=> "\xD8\\\xE0\xF4\r\xB2\xFC*WM\xFF\x83\x18\xF45\xB6" # p SecureRandom.random_bytes #=> "m\xDC\xFC/\a\x00Uf\xB2\xB2P\xBD\xFF6S\x97" # # If a secure random number generator is not available, # +NotImplementedError+ is raised. def random_bytes(n=nil) n = n ? n.to_int : 16 gen_random(n) end # SecureRandom.hex generates a random hexadecimal string. # # The argument _n_ specifies the length, in bytes, of the random number to be generated. # The length of the resulting hexadecimal string is twice of _n_. # # If _n_ is not specified or is nil, 16 is assumed. # It may be larger in the future. # # The result may contain 0-9 and a-f. # # p SecureRandom.hex #=> "eb693ec8252cd630102fd0d0fb7c3485" # p SecureRandom.hex #=> "91dc3bfb4de5b11d029d376634589b61" # # If a secure random number generator is not available, # +NotImplementedError+ is raised. def hex(n=nil) random_bytes(n).unpack("H*")[0] end # SecureRandom.base64 generates a random base64 string. # # The argument _n_ specifies the length, in bytes, of the random number # to be generated. The length of the result string is about 4/3 of _n_. # # If _n_ is not specified or is nil, 16 is assumed. # It may be larger in the future. # # The result may contain A-Z, a-z, 0-9, "+", "/" and "=". # # p SecureRandom.base64 #=> "/2BuBuLf3+WfSKyQbRcc/A==" # p SecureRandom.base64 #=> "6BbW0pxO0YENxn38HMUbcQ==" # # If a secure random number generator is not available, # +NotImplementedError+ is raised. # # See RFC 3548 for the definition of base64. def base64(n=nil) [random_bytes(n)].pack("m*").delete("\n") end # SecureRandom.urlsafe_base64 generates a random URL-safe base64 string. # # The argument _n_ specifies the length, in bytes, of the random number # to be generated. The length of the result string is about 4/3 of _n_. # # If _n_ is not specified or is nil, 16 is assumed. # It may be larger in the future. # # The boolean argument _padding_ specifies the padding. # If it is false or nil, padding is not generated. # Otherwise padding is generated. # By default, padding is not generated because "=" may be used as a URL delimiter. # # The result may contain A-Z, a-z, 0-9, "-" and "_". # "=" is also used if _padding_ is true. # # p SecureRandom.urlsafe_base64 #=> "b4GOKm4pOYU_-BOXcrUGDg" # p SecureRandom.urlsafe_base64 #=> "UZLdOkzop70Ddx-IJR0ABg" # # p SecureRandom.urlsafe_base64(nil, true) #=> "i0XQ-7gglIsHGV2_BNPrdQ==" # p SecureRandom.urlsafe_base64(nil, true) #=> "-M8rLhr7JEpJlqFGUMmOxg==" # # If a secure random number generator is not available, # +NotImplementedError+ is raised. # # See RFC 3548 for the definition of URL-safe base64. def urlsafe_base64(n=nil, padding=false) s = [random_bytes(n)].pack("m*") s.delete!("\n") s.tr!("+/", "-_") s.delete!("=") unless padding s end =begin # SecureRandom.random_number generates a random number. # # If a positive integer is given as _n_, # +SecureRandom.random_number+ returns an integer, such that: # +0 <= SecureRandom.random_number(n) < n+. # # p SecureRandom.random_number(100) #=> 15 # p SecureRandom.random_number(100) #=> 88 # # If 0 is given or an argument is not given, # +SecureRandom.random_number+ returns a float, such that: # +0.0 <= SecureRa