org.bouncycastle.tls.SessionParameters Maven / Gradle / Ivy

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The Bouncy Castle Java APIs for the TLS, including a JSSE provider. The APIs are designed primarily to be used in conjunction with the BC FIPS provider. The APIs may also be used with other providers although if being used in a FIPS context it is the responsibility of the user to ensure that any other providers used are FIPS certified and used appropriately.
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package org.bouncycastle.tls;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.util.Hashtable;

import org.bouncycastle.tls.crypto.TlsSecret;
import org.bouncycastle.util.Arrays;

public final class SessionParameters
{
    public static final class Builder
    {
        private int cipherSuite = -1;
        private short compressionAlgorithm = -1;
        private Certificate localCertificate = null;
        private TlsSecret masterSecret = null;
        private ProtocolVersion negotiatedVersion;
        private Certificate peerCertificate = null;
        private byte[] pskIdentity = null;
        private byte[] srpIdentity = null;
        private byte[] encodedServerExtensions = null;
        private boolean extendedMasterSecret = false;

        public Builder()
        {
        }

        public SessionParameters build()
        {
            validate(this.cipherSuite >= 0, "cipherSuite");
            validate(this.compressionAlgorithm >= 0, "compressionAlgorithm");
            validate(this.masterSecret != null, "masterSecret");
            return new SessionParameters(cipherSuite, compressionAlgorithm, localCertificate, masterSecret,
                negotiatedVersion, peerCertificate, pskIdentity, srpIdentity, encodedServerExtensions,
                extendedMasterSecret);
        }

        public Builder setCipherSuite(int cipherSuite)
        {
            this.cipherSuite = cipherSuite;
            return this;
        }

        public Builder setCompressionAlgorithm(short compressionAlgorithm)
        {
            this.compressionAlgorithm = compressionAlgorithm;
            return this;
        }

        public Builder setExtendedMasterSecret(boolean extendedMasterSecret)
        {
            this.extendedMasterSecret = extendedMasterSecret;
            return this;
        }

        public Builder setLocalCertificate(Certificate localCertificate)
        {
            this.localCertificate = localCertificate;
            return this;
        }

        public Builder setMasterSecret(TlsSecret masterSecret)
        {
            this.masterSecret = masterSecret;
            return this;
        }

        public Builder setNegotiatedVersion(ProtocolVersion negotiatedVersion)
        {
            this.negotiatedVersion = negotiatedVersion;
            return this;
        }

        public Builder setPeerCertificate(Certificate peerCertificate)
        {
            this.peerCertificate = peerCertificate;
            return this;
        }

        public Builder setPSKIdentity(byte[] pskIdentity)
        {
            this.pskIdentity = pskIdentity;
            return this;
        }

        public Builder setSRPIdentity(byte[] srpIdentity)
        {
            this.srpIdentity = srpIdentity;
            return this;
        }

        public Builder setServerExtensions(Hashtable serverExtensions) throws IOException
        {
            if (serverExtensions == null || serverExtensions.isEmpty())
            {
                encodedServerExtensions = null;
            }
            else
            {
                ByteArrayOutputStream buf = new ByteArrayOutputStream();
                TlsProtocol.writeExtensions(buf, serverExtensions);
                encodedServerExtensions = buf.toByteArray();
            }
            return this;
        }

        private void validate(boolean condition, String parameter)
        {
            if (!condition)
            {
                throw new IllegalStateException("Required session parameter '" + parameter + "' not configured");
            }
        }
    }

    private int cipherSuite;
    private short compressionAlgorithm;
    private Certificate localCertificate;
    private TlsSecret masterSecret;
    private ProtocolVersion negotiatedVersion;
    private Certificate peerCertificate;
    private byte[] pskIdentity = null;
    private byte[] srpIdentity = null;
    private byte[] encodedServerExtensions;
    private boolean extendedMasterSecret;

    private SessionParameters(int cipherSuite, short compressionAlgorithm, Certificate localCertificate,
        TlsSecret masterSecret, ProtocolVersion negotiatedVersion, Certificate peerCertificate, byte[] pskIdentity,
        byte[] srpIdentity, byte[] encodedServerExtensions, boolean extendedMasterSecret)
    {
        this.cipherSuite = cipherSuite;
        this.compressionAlgorithm = compressionAlgorithm;
        this.localCertificate = localCertificate;
        this.masterSecret = masterSecret;
        this.negotiatedVersion = negotiatedVersion;
        this.peerCertificate = peerCertificate;
        this.pskIdentity = Arrays.clone(pskIdentity);
        this.srpIdentity = Arrays.clone(srpIdentity);
        this.encodedServerExtensions = encodedServerExtensions;
        this.extendedMasterSecret = extendedMasterSecret;
    }

    public void clear()
    {
        if (this.masterSecret != null)
        {
            this.masterSecret.destroy();
        }
    }

    public SessionParameters copy()
    {
        return new SessionParameters(cipherSuite, compressionAlgorithm, localCertificate, masterSecret,
            negotiatedVersion, peerCertificate, pskIdentity, srpIdentity, encodedServerExtensions,
            extendedMasterSecret);
    }

    public int getCipherSuite()
    {
        return cipherSuite;
    }

    public short getCompressionAlgorithm()
    {
        return compressionAlgorithm;
    }

    public Certificate getLocalCertificate()
    {
        return localCertificate;
    }

    public TlsSecret getMasterSecret()
    {
        return masterSecret;
    }

    public ProtocolVersion getNegotiatedVersion()
    {
        return negotiatedVersion;
    }

    public Certificate getPeerCertificate()
    {
        return peerCertificate;
    }

    public byte[] getPSKIdentity()
    {
        return pskIdentity;
    }

    public byte[] getSRPIdentity()
    {
        return srpIdentity;
    }

    public boolean isExtendedMasterSecret()
    {
        return extendedMasterSecret;
    }

    public Hashtable readServerExtensions() throws IOException
    {
        if (encodedServerExtensions == null)
        {
            return null;
        }

        ByteArrayInputStream buf = new ByteArrayInputStream(encodedServerExtensions);
        return TlsProtocol.readExtensions(buf);
    }
}