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* lib/securerandom.rb (SecureRandom.random_bytes): modify PRNG state

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to prevent random number sequence repeatation at forked child
  process which has same pid.
  reported by Eric Wong.  [ruby-core:35765]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@32050 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
akr 2011-06-13 09:36:48 +00:00
parent df36601017
commit 58bae71a7b
2 changed files with 15 additions and 0 deletions
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7
ChangeLog
View file

@ -1,3 +1,10 @@
Mon Jun 13 18:33:04 2011 Tanaka Akira <akr@fsij.org>
* lib/securerandom.rb (SecureRandom.random_bytes): modify PRNG state
to prevent random number sequence repeatation at forked child
process which has same pid.
reported by Eric Wong. [ruby-core:35765]
Mon Jun 13 17:02:34 2011 NARUSE, Yui <naruse@ruby-lang.org>
* lib/net/http.rb (Net::HTTP#use_ssl?): require 'openssl' only when

8
lib/securerandom.rb
View file

@ -57,6 +57,14 @@ module SecureRandom
n ||= 16
if defined? OpenSSL::Random
@pid = $$ if !defined?(@pid)
pid = $$
if @pid != pid
now = Time.now
ary = [now.to_i, now.nsec, @pid, pid]
OpenSSL::Random.seed(ary.to_s)
@pid = pid
end
return OpenSSL::Random.random_bytes(n)
end