diff -r 7d6f2526244a -r 197a85a35cba src/net/java/otr4j/session/SessionKeys.java
--- a/src/net/java/otr4j/session/SessionKeys.java	Sun Mar 15 17:28:04 2015 +0100
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,54 +0,0 @@
-package net.java.otr4j.session;
-
-import java.math.BigInteger;
-import java.security.KeyPair;
-
-import javax.crypto.interfaces.DHPublicKey;
-
-import net.java.otr4j.OtrException;
-
-interface SessionKeys {
-
-	public static final int Previous = 0;
-	public static final int Current = 1;
-	public static final byte HIGH_SEND_BYTE = (byte) 0x01;
-	public static final byte HIGH_RECEIVE_BYTE = (byte) 0x02;
-	public static final byte LOW_SEND_BYTE = (byte) 0x02;
-	public static final byte LOW_RECEIVE_BYTE = (byte) 0x01;
-
-	public abstract void setLocalPair(KeyPair keyPair, int localPairKeyID);
-
-	public abstract void setRemoteDHPublicKey(DHPublicKey pubKey,
-			int remoteKeyID);
-
-	public abstract void incrementSendingCtr();
-
-	public abstract byte[] getSendingCtr();
-
-	public abstract byte[] getReceivingCtr();
-
-	public abstract void setReceivingCtr(byte[] ctr);
-
-	public abstract byte[] getSendingAESKey() throws OtrException;
-
-	public abstract byte[] getReceivingAESKey() throws OtrException;
-
-	public abstract byte[] getSendingMACKey() throws OtrException;
-
-	public abstract byte[] getReceivingMACKey() throws OtrException;
-
-	public abstract void setS(BigInteger s);
-
-	public abstract void setIsUsedReceivingMACKey(Boolean isUsedReceivingMACKey);
-
-	public abstract Boolean getIsUsedReceivingMACKey();
-
-	public abstract int getLocalKeyID();
-
-	public abstract int getRemoteKeyID();
-
-	public abstract DHPublicKey getRemoteKey();
-
-	public abstract KeyPair getLocalPair();
-
-}
\ No newline at end of file