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| author | akr <akr@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2011-06-13 09:36:48 +0000 |
|---|---|---|
| committer | akr <akr@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2011-06-13 09:36:48 +0000 |
| commit | 58bae71a7b023b5bb5fdcfefb46232f3f14bc519 (patch) | |
| tree | 3cc9cb8fedf5c909d56ddeacc344987c3a15e200 /lib/securerandom.rb | |
| parent | df366010177157228cb11d2cd6050bc32044df8f (diff) | |
| download | ruby-58bae71a7b023b5bb5fdcfefb46232f3f14bc519.tar.gz | |
* 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]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@32050 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'lib/securerandom.rb')
| -rw-r--r-- | lib/securerandom.rb | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/lib/securerandom.rb b/lib/securerandom.rb index e04251bb67..d238a35406 100644 --- a/lib/securerandom.rb +++ b/lib/securerandom.rb @@ -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 |