diff options
| author | naruse <naruse@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2016-03-17 06:01:11 +0000 |
|---|---|---|
| committer | naruse <naruse@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2016-03-17 06:01:11 +0000 |
| commit | 6545327e24c0efc7bb0cb32cd2043d79ea365790 (patch) | |
| tree | 86888bbc42e83f4550ae9f91e839fef383bdd328 /lib/securerandom.rb | |
| parent | 6555077aa00c9ca4bcb298392a615f729e15676a (diff) | |
* lib/securerandom.rb (gen_random): to avoid blocking on Windows.
On Windows OpenSSL RAND_bytes (underlying implementation is
RAND_poll in crypto/rand/rand_win.c) may be blocked at
NetStatisticsGet.
https://wiki.openssl.org/index.php/Random_Numbers#Windows_Issues
Instead of this, use Random.raw_seed directory (whose implementation
CryptGenRandom is one of the source of
entropy of RAND_poll on Windows).
https://wiki.openssl.org/index.php/Random_Numbers
Note: CryptGenRandom function is PRNG and doesn't check its entropy,
so it won't block. [Bug #12139]
https://msdn.microsoft.com/ja-jp/library/windows/desktop/aa379942.aspx
https://tools.ietf.org/html/rfc4086#section-7.1.3
https://eprint.iacr.org/2007/419.pdf
http://www.cs.huji.ac.il/~dolev/pubs/thesis/msc-thesis-leo.pdf
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@54144 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'lib/securerandom.rb')
| -rw-r--r-- | lib/securerandom.rb | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/securerandom.rb b/lib/securerandom.rb index c2eddbd5a3..d8afc7d01b 100644 --- a/lib/securerandom.rb +++ b/lib/securerandom.rb @@ -48,7 +48,7 @@ end # module SecureRandom - if defined? OpenSSL::Random + if defined?(OpenSSL::Random) && /mswin|mingw/ !~ RUBY_PLATFORM def self.gen_random(n) @pid = 0 unless defined?(@pid) pid = $$ |