Question

我正在建立SSL连接（作为客户端），根据this Oracle article，如果您使用TLSv1.2并启用强制版本的管辖区策略，则JDK7中支持以下两种密码套件。

TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256

然而，在进行安全连接时会忽略两个密码算法。

Ignoring unsupported cipher suite: TLS_DHE_DSS_WITH_AES_128_CBC_SHA256
Ignoring unsupported cipher suite: TLS_DHE_DSS_WITH_AES_256_CBC_SHA256
Ignoring unsupported cipher suite: TLS_DHE_RSA_WITH_AES_128_CBC_SHA256
Ignoring unsupported cipher suite: TLS_ECDH_RSA_WITH_AES_128_CBC_SHA256
Ignoring unsupported cipher suite: TLS_DHE_RSA_WITH_AES_256_CBC_SHA256
**Ignoring unsupported cipher suite: TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384**
Ignoring unsupported cipher suite: TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA384
Ignoring unsupported cipher suite: TLS_RSA_WITH_AES_256_CBC_SHA256
**Ignoring unsupported cipher suite: TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256**
Ignoring unsupported cipher suite: TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384
Ignoring unsupported cipher suite: TLS_ECDH_RSA_WITH_AES_256_CBC_SHA384
Ignoring unsupported cipher suite: TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256
Ignoring unsupported cipher suite: TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA256
Ignoring unsupported cipher suite: TLS_RSA_WITH_AES_128_CBC_SHA256
Allow unsafe renegotiation: false
Allow legacy hello messages: true
Is initial handshake: true
Is secure renegotiation: false
%% No cached client session
*** ClientHello, TLSv1.2
RandomCookie:  GMT: 1496192143 bytes = { 166, 200, 78, 178, 69, 10, 17, 174, 212, 142, 188, 108, 136, 152, 242, 222, 94, 231, 4, 86, 2, 99, 202, 4, 204, 130, 236, 120 }
Session ID:  {}
Cipher Suites: [TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA, TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA, TLS_RSA_WITH_AES_256_CBC_SHA, TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA, TLS_ECDH_RSA_WITH_AES_256_CBC_SHA, TLS_DHE_RSA_WITH_AES_256_CBC_SHA, TLS_DHE_DSS_WITH_AES_256_CBC_SHA, TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA, TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA, TLS_RSA_WITH_AES_128_CBC_SHA, TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA, TLS_ECDH_RSA_WITH_AES_128_CBC_SHA, TLS_DHE_RSA_WITH_AES_128_CBC_SHA, TLS_DHE_DSS_WITH_AES_128_CBC_SHA, TLS_ECDHE_ECDSA_WITH_3DES_EDE_CBC_SHA, TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA, SSL_RSA_WITH_3DES_EDE_CBC_SHA, TLS_ECDH_ECDSA_WITH_3DES_EDE_CBC_SHA, TLS_ECDH_RSA_WITH_3DES_EDE_CBC_SHA, SSL_DHE_RSA_WITH_3DES_EDE_CBC_SHA, SSL_DHE_DSS_WITH_3DES_EDE_CBC_SHA, TLS_ECDHE_ECDSA_WITH_RC4_128_SHA, TLS_ECDHE_RSA_WITH_RC4_128_SHA, SSL_RSA_WITH_RC4_128_SHA, TLS_ECDH_ECDSA_WITH_RC4_128_SHA, TLS_ECDH_RSA_WITH_RC4_128_SHA, SSL_RSA_WITH_RC4_128_MD5, TLS_EMPTY_RENEGOTIATION_INFO_SCSV]
Compression Methods:  { 0 }
Extension elliptic_curves, curve names: {secp256r1, sect163k1, sect163r2, secp192r1, secp224r1, sect233k1, sect233r1, sect283k1, sect283r1, secp384r1, sect409k1, sect409r1, secp521r1, sect571k1, sect571r1, secp160k1, secp160r1, secp160r2, sect163r1, secp192k1, sect193r1, sect193r2, secp224k1, sect239k1, secp256k1}
Extension ec_point_formats, formats: [uncompressed]
Extension signature_algorithms, signature_algorithms: SHA512withECDSA, SHA512withRSA, SHA384withECDSA, SHA384withRSA, SHA256withECDSA, SHA256withRSA, SHA224withECDSA, SHA224withRSA, SHA1withECDSA, SHA1withRSA, SHA1withDSA, MD5withRSA
Extension server_name, server_name: [host_name: api.sms.optus.com.au]
***
main, WRITE: **TLSv1.2** Handshake, length = 222
main, READ: TLSv1.2 Alert, length = 2
main, RECV TLSv1 ALERT:  fatal, handshake_failure
main, called closeSocket()
main, handling exception: javax.net.ssl.SSLHandshakeException: Received fatal alert: handshake_failure
ERROR [main] (TestRest.java:42) - Error :

我已经设置了TLSv1.2

-Dhttps.protocols = TLSv1.2工作

我已经安装了“ JCE Unlimited Strength Jurisdiction Policy Files ”，我可以通过运行以下代码确认其已成功安装

try {
    int maxAllowedKeyLength = Cipher.getMaxAllowedKeyLength("AES");
    System.out.println("AES: " + maxAllowedKeyLength);
    return maxAllowedKeyLength >= 256;
} catch (NoSuchAlgorithmException e) {
    return false;
}

我认为JDK7中不支持两种密码算法，但在Oracle文章中错误地提到了这些算法？

注意：

如果我在JDK8中运行c0ode，则没有问题。
我在firewal后面，不得不设置代理。但我不认为它相关，因为我可以在JDK8中连接没有问题。

Answer 1

＆＃39;启用＆＃39;的初始设置密码列表在任何剪裁完成之前在SSLContextImpl.init中计算，并且在Java7客户端中，初始协议列表仅为SSLv3和TLSv1（在最近的版本中，java.security配置jdk.tls.disabledAlgorithms以删除SSLv3，因为POODLE）所以这会禁用所有仅限TLSv1.2的密码，这是该服务器唯一同意的密码。在实际握手开始之前，这是跟踪中Ignoring unsupported消息的来源。

如果使用HttpsURLConnection，您需要设置 https.protocols和https.cipherSuites（注意大写S）sysprops。如果直接使用SSLSocket，您需要同时调用.setEnabledProtocols包括（{至少）TLSv1.2和.setEnabledCipherSuites，包括（至少）您在Q中突出显示的密码套件之一，或者替换/包装工厂做相同的事情。

Java8没有问题，因为客户端和服务器的默认协议列表是SSLv3，TLSv1，TLSv1.1，TLSv1.2，再次通过jdk.tls.disabledAlgorithms删除了SSLv3

JDK7 SSL conenction问题忽略不支持的密码套件：TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256

1 个答案: