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25 
26 package javax.net.ssl;
27 
28 import java.security.cert.*;
29 
30 /**
31  * Instance of this interface manage which X509 certificates
32  * may be used to authenticate the remote side of a secure
33  * socket. Decisions may be based on trusted certificate
34  * authorities, certificate revocation lists, online
35  * status checking or other means.
36  *
37  * @since 1.4
38  */
39 public interface X509TrustManager extends TrustManager {
40     /**
41      * Given the partial or complete certificate chain provided by the
42      * peer, build a certificate path to a trusted root and return if
43      * it can be validated and is trusted for client SSL
44      * authentication based on the authentication type.
45      * <p>
46      * The authentication type is determined by the actual certificate
47      * used. For instance, if RSAPublicKey is used, the authType
48      * should be "RSA". Checking is case-sensitive.
49      *
50      * @param chain the peer certificate chain
51      * @param authType the authentication type based on the client certificate
52      * @throws IllegalArgumentException if null or zero-length chain
53      *         is passed in for the chain parameter or if null or zero-length
54      *         string is passed in for the  authType parameter
55      * @throws CertificateException if the certificate chain is not trusted
56      *         by this TrustManager.
57      */
checkClientTrusted(X509Certificate[] chain, String authType)58     public void checkClientTrusted(X509Certificate[] chain, String authType)
59         throws CertificateException;
60 
61     /**
62      * Given the partial or complete certificate chain provided by the
63      * peer, build a certificate path to a trusted root and return if
64      * it can be validated and is trusted for server SSL
65      * authentication based on the authentication type.
66      * <p>
67      * The authentication type is the key exchange algorithm portion
68      * of the cipher suites represented as a String, such as "RSA",
69      * "DHE_DSS". Note: for some exportable cipher suites, the key
70      * exchange algorithm is determined at run time during the
71      * handshake. For instance, for TLS_RSA_EXPORT_WITH_RC4_40_MD5,
72      * the authType should be RSA_EXPORT when an ephemeral RSA key is
73      * used for the key exchange, and RSA when the key from the server
74      * certificate is used. Checking is case-sensitive.
75      *
76      * @param chain the peer certificate chain
77      * @param authType the key exchange algorithm used
78      * @throws IllegalArgumentException if null or zero-length chain
79      *         is passed in for the chain parameter or if null or zero-length
80      *         string is passed in for the  authType parameter
81      * @throws CertificateException if the certificate chain is not trusted
82      *         by this TrustManager.
83      */
checkServerTrusted(X509Certificate[] chain, String authType)84     public void checkServerTrusted(X509Certificate[] chain, String authType)
85         throws CertificateException;
86 
87     /**
88      * Return an array of certificate authority certificates
89      * which are trusted for authenticating peers.
90      *
91      * @return a non-null (possibly empty) array of acceptable
92      *          CA issuer certificates.
93      */
getAcceptedIssuers()94     public X509Certificate[] getAcceptedIssuers();
95 }
96