如何将SSLEngine限制为TLS_ECDHE_ECDSA_WITH_AES_128_CCM_8 CipherSuit

Question

我有以下代码：

SSLContext sslContext = SSLContext.getInstance("TLS", BouncyCastleProvider.PROVIDER_NAME);
sslContext.init(keyManagerFactory.getKeyManagers(), null, null);
SSLEngine sslEngine = sslContext.createSSLEngine();
String[] suites = { "TLS_ECDHE_ECDSA_WITH_AES_128_CCM_8" };
sslEngine.setEnabledCipherSuites(suites);

谢谢。

编辑： 我发现我应该使用需要SecureRandom对象的BouncyCastleJsseProvider，如下所示：

sslContext.init(keyManagerFactory.getKeyManagers(), null, new SecureRandom());

使用新提供程序后，我的代码库中得到了以下堆栈跟踪，据我了解，它应该像以前一样工作：

Aug 17, 2017 8:47:32 PM org.bouncycastle.jsse.provider.ProvTlsServer notifyAlertRaised
INFO: Server raised fatal(2) handshake_failure(40) alert: Failed to read record
org.bouncycastle.tls.TlsFatalAlert: handshake_failure(40)
at org.bouncycastle.tls.AbstractTlsServer.getSelectedCipherSuite(Unknown Source)
at org.bouncycastle.jsse.provider.ProvTlsServer.getSelectedCipherSuite(Unknown Source)
at org.bouncycastle.tls.TlsServerProtocol.sendServerHelloMessage(Unknown Source)
at org.bouncycastle.tls.TlsServerProtocol.handleHandshakeMessage(Unknown Source)
at org.bouncycastle.tls.TlsProtocol.processHandshakeQueue(Unknown Source)
at org.bouncycastle.tls.TlsProtocol.processRecord(Unknown Source)
at org.bouncycastle.tls.RecordStream.readRecord(Unknown Source)
at org.bouncycastle.tls.TlsProtocol.safeReadRecord(Unknown Source)
at org.bouncycastle.tls.TlsProtocol.offerInput(Unknown Source)
at org.bouncycastle.jsse.provider.ProvSSLEngine.unwrap(Unknown Source)

Answer 1

为了让它工作，我做了以下工作。

• 添加提供程序：BouncyCastleProvider和BouncyCastleJsseProvider

  Security.addProvider(new BouncyCastleProvider());
  Security.addProvider(new BouncyCastleJsseProvider());
  

• 使用BouncyCastleJsseProvider创建SSLContext

  SSLContext sslContext = SSLContext.getInstance("TLS", BouncyCastleJsseProvider.PROVIDER_NAME);
  

• 使用带有BouncyCastleProvider的SecureRandom实例初始化sslContext

  sslContext.init(
  keyManagers,
  trustManagers,
  SecureRandom.getInstance("DEFAULT", BouncyCastleProvider.PROVIDER_NAME));
  

• 您可能需要使用BouncyCastleJsseProvider和PKIX算法创建KeyManagerFactory

  KeyManagerFactory keyManagerFactory = KeyManagerFactory.getInstance("PKIX", BouncyCastleJsseProvider.PROVIDER_NAME);
  

• 现在，我们能够启用密码套件

  SSLEngine sslEngine = sslContext.createSSLEngine();
  String[] suites = { "TLS_ECDHE_ECDSA_WITH_AES_128_CCM_8" };
  sslEngine.setEnabledCipherSuites(suites);