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Deprecation and documentation for the AESCounterBuiltinRNG issue

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* reproducer test of AESCounterBuiltinRNG issue
* update documentation of random-number-generator
* deprecate AES128CounterSecureRNG AES256CounterSecureRNG
* incorporate feedback from Johannes
This commit is contained in:
Patrik Nordwall 2018-08-27 15:13:40 +02:00
parent 56498e7e58
commit b75bb8fc46
15 changed files with 282 additions and 66 deletions
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53
akka-remote/src/test/scala/akka/remote/Ticket1978CommunicationSpec.scala
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@ -4,7 +4,9 @@
package akka.remote
import java.io.ByteArrayOutputStream
import java.security.NoSuchAlgorithmException
import java.util.zip.GZIPOutputStream
import akka.actor._
import akka.event.NoMarkerLogging
@ -54,7 +56,8 @@ object Configuration {
}
"""
final case class CipherConfig(runTest: Boolean, config: Config, cipher: String, localPort: Int, remotePort: Int)
final case class CipherConfig(runTest: Boolean, config: Config, cipher: String, localPort: Int, remotePort: Int,
provider: Option[ConfigSSLEngineProvider])
def getCipherConfig(cipher: String, enabled: String*): CipherConfig = {
val localPort, remotePort = { val s = new java.net.ServerSocket(0); try s.getLocalPort finally s.close() }
@ -69,7 +72,10 @@ object Configuration {
val rng = sslEngineProvider.createSecureRandom()
rng.nextInt() // Has to work
val sRng = settings.SSLRandomNumberGenerator
val sRng = settings.SSLRandomNumberGenerator match {
case "AES128CounterSecureRNG" | "AES256CounterSecureRNG" ⇒ ""
case other ⇒ other
}
if (rng.getAlgorithm != sRng && sRng != "")
throw new NoSuchAlgorithmException(sRng)
@ -81,9 +87,10 @@ object Configuration {
engine.getSupportedProtocols.contains(settings.SSLProtocol) ||
(throw new IllegalArgumentException("Protocol not supported: " + settings.SSLProtocol))
CipherConfig(true, config, cipher, localPort, remotePort)
CipherConfig(true, config, cipher, localPort, remotePort, Some(sslEngineProvider))
} catch {
case (_: IllegalArgumentException) | (_: NoSuchAlgorithmException) ⇒ CipherConfig(false, AkkaSpec.testConf, cipher, localPort, remotePort) // Cannot match against the message since the message might be localized :S
case _: IllegalArgumentException | _: NoSuchAlgorithmException ⇒
CipherConfig(false, AkkaSpec.testConf, cipher, localPort, remotePort, None) // Cannot match against the message since the message might be localized :S
}
}
}
@ -92,13 +99,17 @@ class Ticket1978SHA1PRNGSpec extends Ticket1978CommunicationSpec(getCipherConfig
class Ticket1978AES128CounterSecureRNGSpec extends Ticket1978CommunicationSpec(getCipherConfig("AES128CounterSecureRNG", "TLS_RSA_WITH_AES_128_CBC_SHA", "TLS_RSA_WITH_AES_256_CBC_SHA"))
class Ticket1978DeprecatedAES128CounterSecureRNGSpec extends Ticket1978CommunicationSpec(getCipherConfig("DeprecatedAES128CounterSecureRNG", "TLS_RSA_WITH_AES_128_CBC_SHA", "TLS_RSA_WITH_AES_256_CBC_SHA"))
class Ticket1978AES256CounterSecureRNGSpec extends Ticket1978CommunicationSpec(getCipherConfig("AES256CounterSecureRNG", "TLS_RSA_WITH_AES_128_CBC_SHA", "TLS_RSA_WITH_AES_256_CBC_SHA"))
class Ticket1978DeprecatedAES256CounterSecureRNGSpec extends Ticket1978CommunicationSpec(getCipherConfig("DeprecatedAES256CounterSecureRNG", "TLS_RSA_WITH_AES_128_CBC_SHA", "TLS_RSA_WITH_AES_256_CBC_SHA"))
class Ticket1978DefaultRNGSecureSpec extends Ticket1978CommunicationSpec(getCipherConfig("", "TLS_RSA_WITH_AES_128_CBC_SHA"))
class Ticket1978CrappyRSAWithMD5OnlyHereToMakeSureThingsWorkSpec extends Ticket1978CommunicationSpec(getCipherConfig("", "SSL_RSA_WITH_NULL_MD5"))
class Ticket1978NonExistingRNGSecureSpec extends Ticket1978CommunicationSpec(CipherConfig(false, AkkaSpec.testConf, "NonExistingRNG", 12345, 12346))
class Ticket1978NonExistingRNGSecureSpec extends Ticket1978CommunicationSpec(CipherConfig(false, AkkaSpec.testConf, "NonExistingRNG", 12345, 12346, None))
abstract class Ticket1978CommunicationSpec(val cipherConfig: CipherConfig) extends AkkaSpec(cipherConfig.config) with ImplicitSender {
@ -121,6 +132,38 @@ abstract class Ticket1978CommunicationSpec(val cipherConfig: CipherConfig) exten
val ignoreMe = other.actorOf(Props(new Actor { def receive = { case ("ping", x) ⇒ sender() ! ((("pong", x), sender())) } }), "echo")
val otherAddress = other.asInstanceOf[ExtendedActorSystem].provider.asInstanceOf[RemoteActorRefProvider].transport.defaultAddress
"generate random" in {
val rng = cipherConfig.provider.get.createSecureRandom()
val bytes = Array.ofDim[Byte](16)
// awaitAssert just in case we are very unlucky to get same sequence more than once
awaitAssert {
val randomBytes = (1 to 10).map { n ⇒
rng.nextBytes(bytes)
bytes.toVector
}.toSet
randomBytes.size should ===(10)
}
}
"have random numbers that are not compressable, because then they are not random" in {
val provider = new ConfigSSLEngineProvider(system)
val rng = provider.createSecureRandom()
val randomData = new Array[Byte](1024 * 1024)
rng.nextBytes(randomData)
val baos = new ByteArrayOutputStream()
val gzipped = new GZIPOutputStream(baos)
try gzipped.write(randomData)
finally gzipped.close()
val compressed = baos.toByteArray
// random data should not be compressible
// Another reproducer of https://doc.akka.io/docs/akka/current/security/2018-08-29-aes-rng.html
// with the broken implementation the compressed size was <5k
compressed.size should be > randomData.length
}
"support tell" in within(timeout.duration) {
val here = {
system.actorSelection(otherAddress.toString + "/user/echo") ! Identify(None)