adding test for oaep decryption

Author: balmas

src/test/ruby/oaep/encrypted.key

@@ -0,0 +1,15 @@
+-----BEGIN RSA PRIVATE KEY-----
+MIICXAIBAAKBgQDo6m+QZvYQ/xL0ElLgupK1QDcYL4f5PckwsNgS9pUvV7fzTqCH
+k8ThLxTk42MQ2McJsOeUJVP728KhymjFCqxgP4VuwRk9rpAl0+mhy6MPdyjyA6G1
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+AoGBALGR6bRBit+yV5TUU3MZSrf8WQSLWDLgs/33FQSAEYSib4+DJke2lKbI6jkG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+-----END RSA PRIVATE KEY-----

src/test/ruby/oaep/test_oaep.rb

@@ -0,0 +1,22 @@
+# coding: US-ASCII
+require 'base64'
+class TestOaep < TestCase
+
+  def setup
+    super
+    self.class.disable_security_restrictions!
+  end
+
+  def test_oaep_decrypt
+    key = File::read(File.join(File.dirname(__FILE__), 'encrypted.key'))
+    base64_cipher_text = "s+ydnGyGfJlH6FPB21tYeAeeMKcqLuybw7lxArZIEGRjMNSn2LHNzUEwX/H6FQan5lKQPZxxU1tBuFP6sP27ektEIXgoIQm+PdxilJnNPVoDA9Wff93MMa9JG3VMsc0kbUNMmJf6SQcJ+IB3OyBPZfPrz6wbkwM2zVm9Y/oqFWM="
+
+    # create cleaned up key object
+    key = OpenSSL::PKey::RSA.new(key)
+
+    cipher_text = Base64.decode64(base64_cipher_text)
+    assert_nothing_raised {
+      decrypted = key.private_decrypt(cipher_text, OpenSSL::PKey::RSA::PKCS1_OAEP_PADDING)
+    }
+  end
+end