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## org.apache.tomcat.util.net.jsse
Class JSSEKeyManager

    java.lang.Object
      org.apache.tomcat.util.net.jsse.JSSEKeyManager

All Implemented Interfaces:
  javax.net.ssl.KeyManager, javax.net.ssl.X509KeyManager

public final class JSSEKeyManager
extends java.lang.Object
implements javax.net.ssl.X509KeyManager

X509KeyManager which allows selection of a specific keypair and certificate chain (identified by their keystore alias name) to be used by the server to authenticate itself to SSL clients.

Author:
  Jan Luehe

Constructor Summary
`JSSEKeyManager(javax.net.ssl.X509KeyManager mgr, java.lang.String serverKeyAlias)` Constructor.

Method Summary
`java.lang.String` | `chooseClientAlias(java.lang.String[] keyType, java.security.Principal[] issuers, java.net.Socket socket)` Choose an alias to authenticate the client side of a secure socket, given the public key type and the list of certificate issuer authorities recognized by the peer (if any).
`java.lang.String` | `chooseServerAlias(java.lang.String keyType, java.security.Principal[] issuers, java.net.Socket socket)` Returns this key manager's server key alias that was provided in the constructor.
`java.security.cert.X509Certificate[]` | `getCertificateChain(java.lang.String alias)` Returns the certificate chain associated with the given alias.
`java.lang.String[]` | `getClientAliases(java.lang.String keyType, java.security.Principal[] issuers)` Get the matching aliases for authenticating the client side of a secure socket, given the public key type and the list of certificate issuer authorities recognized by the peer (if any).
`java.security.PrivateKey` | `getPrivateKey(java.lang.String alias)` Returns the key associated with the given alias.
`java.lang.String[]` | `getServerAliases(java.lang.String keyType, java.security.Principal[] issuers)` Get the matching aliases for authenticating the server side of a secure socket, given the public key type and the list of certificate issuer authorities recognized by the peer (if any).

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### JSSEKeyManager

    public JSSEKeyManager(javax.net.ssl.X509KeyManager mgr,
                          java.lang.String serverKeyAlias)

  Constructor.

Parameters:
  `mgr` - The X509KeyManager used as a delegate
  `serverKeyAlias` - The alias name of the server's keypair and supporting certificate chain

Method Detail

### chooseClientAlias

    public java.lang.String chooseClientAlias(java.lang.String[] keyType,
                                              java.security.Principal[] issuers,
                                              java.net.Socket socket)

  Choose an alias to authenticate the client side of a secure socket, given the public key type and the list of certificate issuer authorities recognized by the peer (if any).

  Specified by:
    `chooseClientAlias` in interface `javax.net.ssl.X509KeyManager`
  Parameters:
    `keyType` - The key algorithm type name(s), ordered with the most-preferred key type first
    `issuers` - The list of acceptable CA issuer subject names, or null if it does not matter which issuers are used
    `socket` - The socket to be used for this connection. This parameter can be null, in which case this method will return the most generic alias to use
  Returns:
    The alias name for the desired key, or null if there are no matches

### chooseServerAlias

    public java.lang.String chooseServerAlias(java.lang.String keyType,
                                              java.security.Principal[] issuers,
                                              java.net.Socket socket)

  Returns this key manager's server key alias that was provided in the constructor.

  Specified by:
    `chooseServerAlias` in interface `javax.net.ssl.X509KeyManager`
  Parameters:
    `keyType` - The key algorithm type name (ignored)
    `issuers` - The list of acceptable CA issuer subject names, or null if it does not matter which issuers are used (ignored)
    `socket` - The socket to be used for this connection. This parameter can be null, in which case this method will return the most generic alias to use (ignored)
  Returns:
    Alias name for the desired key

### getCertificateChain

    public java.security.cert.X509Certificate[] getCertificateChain(java.lang.String alias)

  Returns the certificate chain associated with the given alias.

  Specified by:
    `getCertificateChain` in interface `javax.net.ssl.X509KeyManager`
  Parameters:
    `alias` - The alias name
  Returns:
    Certificate chain (ordered with the user's certificate first and the root certificate authority last), or null if the alias can't be found

### getClientAliases

    public java.lang.String[] getClientAliases(java.lang.String keyType,
                                               java.security.Principal[] issuers)

  Get the matching aliases for authenticating the client side of a secure socket, given the public key type and the list of certificate issuer authorities recognized by the peer (if any).

  Specified by:
    `getClientAliases` in interface `javax.net.ssl.X509KeyManager`
  Parameters:
    `keyType` - The key algorithm type name
    `issuers` - The list of acceptable CA issuer subject names, or null if it does not matter which issuers are used
  Returns:
    Array of the matching alias names, or null if there were no matches

### getServerAliases

    public java.lang.String[] getServerAliases(java.lang.String keyType,
                                               java.security.Principal[] issuers)

  Get the matching aliases for authenticating the server side of a secure socket, given the public key type and the list of certificate issuer authorities recognized by the peer (if any).

  Specified by:
    `getServerAliases` in interface `javax.net.ssl.X509KeyManager`
  Parameters:
    `keyType` - The key algorithm type name
    `issuers` - The list of acceptable CA issuer subject names, or null if it does not matter which issuers are used
  Returns:
    Array of the matching alias names, or null if there were no matches

### getPrivateKey

    public java.security.PrivateKey getPrivateKey(java.lang.String alias)

  Returns the key associated with the given alias.

  Specified by:
    `getPrivateKey` in interface `javax.net.ssl.X509KeyManager`
  Parameters:
    `alias` - The alias name
  Returns:
    The requested key, or null if the alias can't be found

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