SSLContext - JRE Emulation | JRE Emulation
public class

SSLContext

extends Object
java.lang.Object
   ↳ javax.net.ssl.SSLContext

Class Overview

The public API for secure socket protocol implementations. It acts as factory for SSLSocketFactory's and SSLEngines.

Summary

Protected Constructors
SSLContext(SSLContextSpi contextSpi, Provider provider, String protocol)
Creates a new SSLContext.
Public Methods
final SSLEngine createSSLEngine()
Creates an SSLEngine instance from this context.
final SSLEngine createSSLEngine(String peerHost, int peerPort)
Creates an SSLEngine instance from this context with the specified hostname and port.
final SSLSessionContext getClientSessionContext()
Returns the SSL session context that encapsulates the set of SSL sessions that can be used for handshake of client-side SSL sockets.
static SSLContext getDefault()
Returns the default SSLContext.
final SSLParameters getDefaultSSLParameters()
Returns the default SSL handshake parameters for SSLSockets created by this SSLContext.
static SSLContext getInstance(String protocol)
Creates a new SSLContext instance for the specified protocol.
static SSLContext getInstance(String protocol, String provider)
Creates a new SSLContext instance for the specified protocol from the specified provider.
static SSLContext getInstance(String protocol, Provider provider)
Creates a new SSLContext instance for the specified protocol from the specified provider.
final String getProtocol()
Returns the name of the secure socket protocol of this instance.
final Provider getProvider()
Returns the provider of this SSLContext instance.
final SSLSessionContext getServerSessionContext()
Returns the SSL session context that encapsulates the set of SSL sessions that can be used for handshake of server-side SSL sockets.
final SSLServerSocketFactory getServerSocketFactory()
Returns a server socket factory for this instance.
final SSLSocketFactory getSocketFactory()
Returns a socket factory for this instance.
final SSLParameters getSupportedSSLParameters()
Returns SSL handshake parameters for SSLSockets that includes all supported cipher suites and protocols.
final void init(KeyManager[] km, TrustManager[] tm, SecureRandom sr)
Initializes this SSLContext instance.
static void setDefault(SSLContext sslContext)
Sets the default SSLContext instance as returned by getDefault() to a non-null initialized value.
Inherited Methods
[Expand]
From class java.lang.Object

Protected Constructors

protected SSLContext (SSLContextSpi contextSpi, Provider provider, String protocol)

Creates a new SSLContext.

Parameters
contextSpi the implementation delegate.
provider the provider.
protocol the protocol name.

Public Methods

public final SSLEngine createSSLEngine ()

Creates an SSLEngine instance from this context.

Returns
  • an SSLEngine instance from this context.
Throws
UnsupportedOperationException if the provider does not support the operation.

public final SSLEngine createSSLEngine (String peerHost, int peerPort)

Creates an SSLEngine instance from this context with the specified hostname and port.

Parameters
peerHost the name of the host
peerPort the port
Returns
  • an SSLEngine instance from this context.
Throws
UnsupportedOperationException if the provider does not support the operation.

public final SSLSessionContext getClientSessionContext ()

Returns the SSL session context that encapsulates the set of SSL sessions that can be used for handshake of client-side SSL sockets.

Returns
  • the SSL client session context for this context or null if the underlying provider does not provide an implementation of the SSLSessionContext interface.

public static SSLContext getDefault ()

Returns the default SSLContext. The default SSL context can be set with setDefault(SSLContext). If not, one will be created with SSLContext.getInstance("Default"), which will already be initialized.

Throws
NoSuchAlgorithmException if there is a problem creating the default instance.

public final SSLParameters getDefaultSSLParameters ()

Returns the default SSL handshake parameters for SSLSockets created by this SSLContext.

Throws
UnsupportedOperationException

public static SSLContext getInstance (String protocol)

Creates a new SSLContext instance for the specified protocol.

The following protocols are supported:
Protocol API Levels
Default 9+
SSL 9+
SSLv3 9+
TLS 1+
TLSv1 1+
TLSv1.1 16+
TLSv1.2 16+

Parameters
protocol the requested protocol to create a context for.
Returns
  • the created SSLContext instance.
Throws
NoSuchAlgorithmException if no installed provider can provide the requested protocol
NullPointerException if protocol is null (instead of NoSuchAlgorithmException as in 1.4 release)

public static SSLContext getInstance (String protocol, String provider)

Creates a new SSLContext instance for the specified protocol from the specified provider.

The following combinations are supported:
Protocol Provider API Levels
Default AndroidOpenSSL 9+
SSL AndroidOpenSSL 9+
SSL HarmonyJSSE 9-19
SSLv3 AndroidOpenSSL 9+
SSLv3 HarmonyJSSE 9-19
TLS AndroidOpenSSL 9+
TLS HarmonyJSSE 1-19
TLSv1 AndroidOpenSSL 9+
TLSv1 HarmonyJSSE 1-19
TLSv1.1 AndroidOpenSSL 16+
TLSv1.2 AndroidOpenSSL 16+

NOTE: The best practice is to rely on platform defaults rather than explicitly specify a provider. getDefault() and getInstance(String) are normally preferred over this method.

Parameters
protocol the requested protocol to create a context for.
provider the name of the provider that provides the requested protocol.
Returns
  • an SSLContext for the requested protocol.
Throws
NoSuchAlgorithmException if the specified provider cannot provider the requested protocol.
NoSuchProviderException if the specified provider does not exits.
NullPointerException if protocol is null (instead of NoSuchAlgorithmException as in 1.4 release)

public static SSLContext getInstance (String protocol, Provider provider)

Creates a new SSLContext instance for the specified protocol from the specified provider.

Parameters
protocol the requested protocol to create a context for
provider the provider that provides the requested protocol.
Returns
  • an SSLContext for the requested protocol.
Throws
NoSuchAlgorithmException if the specified provider cannot provide the requested protocol.
NullPointerException if protocol is null (instead of NoSuchAlgorithmException as in 1.4 release)

public final String getProtocol ()

Returns the name of the secure socket protocol of this instance.

Returns
  • the name of the secure socket protocol of this instance.

public final Provider getProvider ()

Returns the provider of this SSLContext instance.

Returns
  • the provider of this SSLContext instance.

public final SSLSessionContext getServerSessionContext ()

Returns the SSL session context that encapsulates the set of SSL sessions that can be used for handshake of server-side SSL sockets.

Returns
  • the SSL server session context for this context or null if the underlying provider does not provide an implementation of the SSLSessionContext interface.

public final SSLServerSocketFactory getServerSocketFactory ()

Returns a server socket factory for this instance.

Returns
  • a server socket factory for this instance.

public final SSLSocketFactory getSocketFactory ()

Returns a socket factory for this instance.

Returns
  • a socket factory for this instance.

public final SSLParameters getSupportedSSLParameters ()

Returns SSL handshake parameters for SSLSockets that includes all supported cipher suites and protocols.

Throws
UnsupportedOperationException

public final void init (KeyManager[] km, TrustManager[] tm, SecureRandom sr)

Initializes this SSLContext instance. Three aspects of the context can be configured during initialization:

  • Providers of key material for key exchange and peer authentication (KeyManager instances),
  • Providers of trust decisions about peers (TrustManager instances),
  • Provider of randomness (SecureRandom instance).

For each type of KeyManager or TrustManager used by this context, only the first matching instance from km or tm will be used. For example, only the first instance of X509TrustManager from tm will be used.

For any parameter set to null defaults will be used. In that case, the installed security providers will be searched for the highest priority implementation of the required primitives. For km and tm, the highest priority implementation of KeyManagerFactory and TrustManagerFactory will be used to obtain the required types of KeyManager and TrustManager. For sr, the default SecureRandom implementation will be used.

Parameters
km the key sources or null for default.
tm the trust decision sources or null for default.
sr the randomness source or null for default.
Throws
KeyManagementException if initializing this instance fails.

public static void setDefault (SSLContext sslContext)

Sets the default SSLContext instance as returned by getDefault() to a non-null initialized value.

Throws
NullPointerException on a null argument