TrustSelfSignedStrategy.java

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 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
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 *   http://www.apache.org/licenses/LICENSE-2.0
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package org.apache.hc.client5.http.ssl;

import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;

import org.apache.hc.core5.annotation.Contract;
import org.apache.hc.core5.annotation.ThreadingBehavior;
import org.apache.hc.core5.ssl.TrustStrategy;

/**
 * A trust strategy that accepts self-signed certificates as trusted. Verification of all other
 * certificates is done by the trust manager configured in the SSL context.
 *
 * <h2>Security Warning</h2>
 * This acts like {@link TrustAllStrategy}, with the only restriction that the certificate chain
 * must have length 1. This means this trust strategy does not protect against man-in-the-middle
 * attacks. See the {@link TrustAllStrategy} for more information and more secure alternatives.
 *
 * @deprecated
 *      For self-signed certificates prefer specifying a keystore containing the certificate when
 *      calling the {@link org.apache.hc.core5.ssl.SSLContextBuilder} {@code loadTrustMaterial}
 *      methods.
 * @since 4.1
 */
@Deprecated
@Contract(threading = ThreadingBehavior.STATELESS)
public class TrustSelfSignedStrategy implements TrustStrategy {

    /**
     * Default instance of {@link TrustSelfSignedStrategy}
     */
    public static final TrustSelfSignedStrategy INSTANCE = new TrustSelfSignedStrategy();

    @Override
    public boolean isTrusted(
            final X509Certificate[] chain, final String authType) throws CertificateException {
        return chain.length == 1;
    }

}