Java SSL异常 - "Prime大小必须是64的倍数..."

Question

我正在尝试实现一个非常简单的SSL客户端来向服务器发送HTTPS POST请求,并且我遇到了这个看似无害的异常.JSSE参考指南尚未使用.非常感谢.

SSLContext ctx = SSLContext.getInstance("SSL");
// Accept-all trust manager
TrustManager[] trustEverything = { new DefaultTrustManager() };       

// Keystore file in local directory
KeyStore ks = KeyStore.getInstance(KeyStore.getDefaultType());
ks.load(new java.io.FileInputStream("keystore"),"123456".toCharArray());

// Key manager  
KeyManager[] managers;
KeyManagerFactory kmf = KeyManagerFactory.getInstance("SunX509");
kmf.init(ks, "123456".toCharArray());
managers = kmf.getKeyManagers();

ctx.init(managers, trustEverything, new SecureRandom());
SSLSocketFactory sslFact = (SSLSocketFactory) ctx.getSocketFactory();
// Connect to internal SSL-enabled server
SSLSocket socket = (SSLSocket) sslFact.createSocket("10.131.149.36", 8443);

我尝试握手时抛出异常:

socket.startHandshake();

我试图找到这些参数初始化的地方无济于事.请让我感到愚蠢.

Caused by: java.security.InvalidAlgorithmParameterException: Prime size must be multiple of 64, and can only range from 512 to 1024 (inclusive)
at     com.sun.crypto.provider.DHKeyPairGenerator.initialize(DHKeyPairGenerator.java:120)
at java.security.KeyPairGenerator$Delegate.initialize(KeyPairGenerator.java:658)
at sun.security.ssl.DHCrypt.<init>(DHCrypt.java:117)

Answer 1

与JCE无关。在 Java < 1.8.0 中，DH 密钥大小的硬性限制为 <= 1024。如果您拥有的 Apache HTTPD 服务器出现问题，解决方法可能是： http ://httpd.apache.org/docs/current/ssl/ssl_faq.html#javadh