下面是我用来执行密码套件和协议的Java类。之前
SSLSocketFactoryEx
,我正在修改
SSLSocket
当我接触到他们的时候。堆栈溢出的Java成员帮助了它,因此能够在这里发布它是很好的。
sslsocketfactoryex公司
更喜欢更强大的密码套件(比如
ECDHE
和
DHE
它省略了脆弱和受伤的密码套件(比如
RC4
和
MD5
)当tls 1.2为
不
可用。他们是
TLS_RSA_WITH_AES_256_CBC_SHA256
,
TLS_RSA_WITH_AES_256_CBC_SHA
还有两个朋友。如果可能,您应该删除
TLS_RSA_*
关键运输方案。
尽可能少地保存密码套件列表。如果你做广告
全部的
可用密码(类似于flaschen的列表),那么您的列表将是80+。在
ClientHello
并且它可能会导致一些设备失败,因为它们有一个小的、固定大小的缓冲区来处理
克里斯蒂诺
. 损坏的电器包括F5和Ironport。
实际上,一旦首选列表与Java支持的密码套件相交,下面代码中的列表就被配对到10或15个密码套件中。例如,以下是我在准备连接或Microsoft.com或Google.com时得到的列表,其中有一个不受限制的JCE策略:
-
带aes的tls-ecdhe-ecdsa_-aes_-256_-cbc_-sha384
-
带aes的tls-ecdhe-rsa-u-sha384
-
带aes的tls-ecdhe-ecdsa_-aes_128_-cbc_sha256
-
带AES的tls-ecdhe-rsa-u-sha256
-
Tls-Ecdhe-RSA-U,带AES-256-GCM-Sha384
-
带aes的tls-dhe-dss-u-sha384
-
tls eu ecdhe_rsa_with_aes_128_gcm_sha256
-
Tsl-Dhe-DSS-U,带AES-128-GCM-Sha256
-
带aes的tls-dhe-dss-u-sha256
-
Tls-Dhe-RSA-U,带AES-128-U CBC-Sha
-
Tsl-dhe-dss-u,带aes-128-cbc-sha
-
带aes的tls rsa__256_cbc_sha256
-
带aes的tls rsa__256_cbc_sha
-
tls_rsa_with_aes_128_cbc_sha256
-
带aes的tls-rsa-u-sha
该列表省略了弱/受伤算法,如rc4和md5。如果它们被启用,那么您可能会得到
Obsolete cryptography warning from Browser
有时。
使用默认的JCE策略,列表将更小,因为该策略删除了AES-256和其他一些策略。我想大概有7套密码套装有限制政策。
这个
sslsocketfactoryex公司
类还确保使用协议tls 1.0及更高版本。Java客户端在Java 8之前禁用TLS 1.1和1.2。
SSLContext.getInstance("TLS")
也会潜入
SSLv3
(即使在Java 8中),也必须采取措施来移除它。
最后,下面的类是TLS 1.3感知的,因此当提供程序使它们可用时,它应该可以工作。这个
*_CHACHA20_POLY1305
如果可用,则首选密码套件,因为它们比某些当前套件快得多,并且具有更好的安全属性。谷歌已经在其服务器上推出了它。我不确定甲骨文什么时候提供。openssl将为他们提供openssl
1.0.2
1.1.0
.
你可以这样使用它:
URL url = new URL("https://www.google.com:443");
HttpsURLConnection connection = (HttpsURLConnection) url.openConnection();
SSLSocketFactoryEx factory = new SSLSocketFactoryEx();
connection.setSSLSocketFactory(factory);
connection.setRequestProperty("charset", "utf-8");
InputStream input = connection.getInputStream();
InputStreamReader reader = new InputStreamReader(input, "utf-8");
BufferedReader buffer = new BufferedReader(reader);
...
class SSLSocketFactoryEx extends SSLSocketFactory
{
public SSLSocketFactoryEx() throws NoSuchAlgorithmException, KeyManagementException
{
initSSLSocketFactoryEx(null,null,null);
}
public SSLSocketFactoryEx(KeyManager[] km, TrustManager[] tm, SecureRandom random) throws NoSuchAlgorithmException, KeyManagementException
{
initSSLSocketFactoryEx(km, tm, random);
}
public SSLSocketFactoryEx(SSLContext ctx) throws NoSuchAlgorithmException, KeyManagementException
{
initSSLSocketFactoryEx(ctx);
}
public String[] getDefaultCipherSuites()
{
return m_ciphers;
}
public String[] getSupportedCipherSuites()
{
return m_ciphers;
}
public String[] getDefaultProtocols()
{
return m_protocols;
}
public String[] getSupportedProtocols()
{
return m_protocols;
}
public Socket createSocket(Socket s, String host, int port, boolean autoClose) throws IOException
{
SSLSocketFactory factory = m_ctx.getSocketFactory();
SSLSocket ss = (SSLSocket)factory.createSocket(s, host, port, autoClose);
ss.setEnabledProtocols(m_protocols);
ss.setEnabledCipherSuites(m_ciphers);
return ss;
}
public Socket createSocket(InetAddress address, int port, InetAddress localAddress, int localPort) throws IOException
{
SSLSocketFactory factory = m_ctx.getSocketFactory();
SSLSocket ss = (SSLSocket)factory.createSocket(address, port, localAddress, localPort);
ss.setEnabledProtocols(m_protocols);
ss.setEnabledCipherSuites(m_ciphers);
return ss;
}
public Socket createSocket(String host, int port, InetAddress localHost, int localPort) throws IOException
{
SSLSocketFactory factory = m_ctx.getSocketFactory();
SSLSocket ss = (SSLSocket)factory.createSocket(host, port, localHost, localPort);
ss.setEnabledProtocols(m_protocols);
ss.setEnabledCipherSuites(m_ciphers);
return ss;
}
public Socket createSocket(InetAddress host, int port) throws IOException
{
SSLSocketFactory factory = m_ctx.getSocketFactory();
SSLSocket ss = (SSLSocket)factory.createSocket(host, port);
ss.setEnabledProtocols(m_protocols);
ss.setEnabledCipherSuites(m_ciphers);
return ss;
}
public Socket createSocket(String host, int port) throws IOException
{
SSLSocketFactory factory = m_ctx.getSocketFactory();
SSLSocket ss = (SSLSocket)factory.createSocket(host, port);
ss.setEnabledProtocols(m_protocols);
ss.setEnabledCipherSuites(m_ciphers);
return ss;
}
private void initSSLSocketFactoryEx(KeyManager[] km, TrustManager[] tm, SecureRandom random)
throws NoSuchAlgorithmException, KeyManagementException
{
m_ctx = SSLContext.getInstance("TLS");
m_ctx.init(km, tm, random);
m_protocols = GetProtocolList();
m_ciphers = GetCipherList();
}
private void initSSLSocketFactoryEx(SSLContext ctx)
throws NoSuchAlgorithmException, KeyManagementException
{
m_ctx = ctx;
m_protocols = GetProtocolList();
m_ciphers = GetCipherList();
}
protected String[] GetProtocolList()
{
String[] preferredProtocols = { "TLSv1", "TLSv1.1", "TLSv1.2", "TLSv1.3" };
String[] availableProtocols = null;
SSLSocket socket = null;
try
{
SSLSocketFactory factory = m_ctx.getSocketFactory();
socket = (SSLSocket)factory.createSocket();
availableProtocols = socket.getSupportedProtocols();
Arrays.sort(availableProtocols);
}
catch(Exception e)
{
return new String[]{ "TLSv1" };
}
finally
{
if(socket != null)
socket.close();
}
List<String> aa = new ArrayList<String>();
for(int i = 0; i < preferredProtocols.length; i++)
{
int idx = Arrays.binarySearch(availableProtocols, preferredProtocols[i]);
if(idx >= 0)
aa.add(preferredProtocols[i]);
}
return aa.toArray(new String[0]);
}
protected String[] GetCipherList()
{
String[] preferredCiphers = {
// *_CHACHA20_POLY1305 are 3x to 4x faster than existing cipher suites.
// http://googleonlinesecurity.blogspot.com/2014/04/speeding-up-and-strengthening-https.html
// Use them if available. Normative names can be found at (TLS spec depends on IPSec spec):
// http://tools.ietf.org/html/draft-nir-ipsecme-chacha20-poly1305-01
// http://tools.ietf.org/html/draft-mavrogiannopoulos-chacha-tls-02
"TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305",
"TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305",
"TLS_ECDHE_ECDSA_WITH_CHACHA20_SHA",
"TLS_ECDHE_RSA_WITH_CHACHA20_SHA",
"TLS_DHE_RSA_WITH_CHACHA20_POLY1305",
"TLS_RSA_WITH_CHACHA20_POLY1305",
"TLS_DHE_RSA_WITH_CHACHA20_SHA",
"TLS_RSA_WITH_CHACHA20_SHA",
// Done with bleeding edge, back to TLS v1.2 and below
"TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384",
"TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384",
"TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256",
"TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256",
"TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384",
"TLS_DHE_DSS_WITH_AES_256_GCM_SHA384",
"TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256",
"TLS_DHE_DSS_WITH_AES_128_GCM_SHA256",
// TLS v1.0 (with some SSLv3 interop)
"TLS_DHE_RSA_WITH_AES_256_CBC_SHA384",
"TLS_DHE_DSS_WITH_AES_256_CBC_SHA256",
"TLS_DHE_RSA_WITH_AES_128_CBC_SHA",
"TLS_DHE_DSS_WITH_AES_128_CBC_SHA",
"TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA",
"TLS_DHE_DSS_WITH_3DES_EDE_CBC_SHA",
"SSL_DH_RSA_WITH_3DES_EDE_CBC_SHA",
"SSL_DH_DSS_WITH_3DES_EDE_CBC_SHA",
// RSA key transport sucks, but they are needed as a fallback.
// For example, microsoft.com fails under all versions of TLS
// if they are not included. If only TLS 1.0 is available at
// the client, then google.com will fail too. TLS v1.3 is
// trying to deprecate them, so it will be interesteng to see
// what happens.
"TLS_RSA_WITH_AES_256_CBC_SHA256",
"TLS_RSA_WITH_AES_256_CBC_SHA",
"TLS_RSA_WITH_AES_128_CBC_SHA256",
"TLS_RSA_WITH_AES_128_CBC_SHA"
};
String[] availableCiphers = null;
try
{
SSLSocketFactory factory = m_ctx.getSocketFactory();
availableCiphers = factory.getSupportedCipherSuites();
Arrays.sort(availableCiphers);
}
catch(Exception e)
{
return new String[] {
"TLS_DHE_DSS_WITH_AES_128_CBC_SHA",
"TLS_DHE_DSS_WITH_AES_256_CBC_SHA",
"TLS_DHE_RSA_WITH_AES_128_CBC_SHA",
"TLS_DHE_RSA_WITH_AES_256_CBC_SHA",
"TLS_RSA_WITH_AES_256_CBC_SHA256",
"TLS_RSA_WITH_AES_256_CBC_SHA",
"TLS_RSA_WITH_AES_128_CBC_SHA256",
"TLS_RSA_WITH_AES_128_CBC_SHA",
"TLS_EMPTY_RENEGOTIATION_INFO_SCSV"
};
}
List<String> aa = new ArrayList<String>();
for(int i = 0; i < preferredCiphers.length; i++)
{
int idx = Arrays.binarySearch(availableCiphers, preferredCiphers[i]);
if(idx >= 0)
aa.add(preferredCiphers[i]);
}
aa.add("TLS_EMPTY_RENEGOTIATION_INFO_SCSV");
return aa.toArray(new String[0]);
}
private SSLContext m_ctx;
private String[] m_ciphers;
private String[] m_protocols;
}
