1 files changed, 142 insertions, 0 deletions
diff --git a/libraries/spongycastle/core/src/main/java/org/spongycastle/crypto/tls/SessionParameters.java b/libraries/spongycastle/core/src/main/java/org/spongycastle/crypto/tls/SessionParameters.java
new file mode 100644
index 000000000..cf8ec194c
--- /dev/null
+++ b/libraries/spongycastle/core/src/main/java/org/spongycastle/crypto/tls/SessionParameters.java
@@ -0,0 +1,142 @@
+package org.spongycastle.crypto.tls;
+
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.util.Hashtable;
+
+import org.spongycastle.util.Arrays;
+
+public final class SessionParameters
+{
+    public static final class Builder
+    {
+        private int cipherSuite = -1;
+        private short compressionAlgorithm = -1;
+        private byte[] masterSecret = null;
+        private Certificate peerCertificate = null;
+        private byte[] encodedServerExtensions = null;
+
+        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, masterSecret, peerCertificate,
+                encodedServerExtensions);
+        }
+
+        public Builder setCipherSuite(int cipherSuite)
+        {
+            this.cipherSuite = cipherSuite;
+            return this;
+        }
+
+        public Builder setCompressionAlgorithm(short compressionAlgorithm)
+        {
+            this.compressionAlgorithm = compressionAlgorithm;
+            return this;
+        }
+
+        public Builder setMasterSecret(byte[] masterSecret)
+        {
+            this.masterSecret = masterSecret;
+            return this;
+        }
+
+        public Builder setPeerCertificate(Certificate peerCertificate)
+        {
+            this.peerCertificate = peerCertificate;
+            return this;
+        }
+
+        public Builder setServerExtensions(Hashtable serverExtensions)
+            throws IOException
+        {
+            if (serverExtensions == null)
+            {
+                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 byte[] masterSecret;
+    private Certificate peerCertificate;
+    private byte[] encodedServerExtensions;
+
+    private SessionParameters(int cipherSuite, short compressionAlgorithm, byte[] masterSecret,
+        Certificate peerCertificate, byte[] encodedServerExtensions)
+    {
+        this.cipherSuite = cipherSuite;
+        this.compressionAlgorithm = compressionAlgorithm;
+        this.masterSecret = Arrays.clone(masterSecret);
+        this.peerCertificate = peerCertificate;
+        this.encodedServerExtensions = encodedServerExtensions;
+    }
+
+    public void clear()
+    {
+        if (this.masterSecret != null)
+        {
+            Arrays.fill(this.masterSecret, (byte)0);
+        }
+    }
+
+    public SessionParameters copy()
+    {
+        return new SessionParameters(cipherSuite, compressionAlgorithm, masterSecret, peerCertificate,
+            encodedServerExtensions);
+    }
+
+    public int getCipherSuite()
+    {
+        return cipherSuite;
+    }
+
+    public short getCompressionAlgorithm()
+    {
+        return compressionAlgorithm;
+    }
+
+    public byte[] getMasterSecret()
+    {
+        return masterSecret;
+    }
+
+    public Certificate getPeerCertificate()
+    {
+        return peerCertificate;
+    }
+
+    public Hashtable readServerExtensions() throws IOException
+    {
+        if (encodedServerExtensions == null)
+        {
+            return null;
+        }
+
+        ByteArrayInputStream buf = new ByteArrayInputStream(encodedServerExtensions);
+        return TlsProtocol.readExtensions(buf);
+    }
+}