AuthenticatedCipher interface isn't needed outside crypto package.

briar-api/src/org/briarproject/api/crypto/AuthenticatedCipher.java

@@ -1,22 +0,0 @@
-package org.briarproject.api.crypto;
-
-import java.security.GeneralSecurityException;
-
-public interface AuthenticatedCipher {
-
-	/**
-	 * Initializes this cipher with a key and an initialisation vector (IV).
-	 */
-	void init(boolean encrypt, SecretKey key, byte[] iv)
-			throws GeneralSecurityException;
-
-	/** Encrypts or decrypts data in a single-part operation. */
-	int process(byte[] input, int inputOff, int len, byte[] output,
-			int outputOff) throws GeneralSecurityException;
-
-	/** Returns the length of the message authentication code (MAC) in bytes. */
-	int getMacBytes();
-
-	/** Returns the block size of the cipher in bytes. */
-	int getBlockBytes();
-}

briar-api/src/org/briarproject/api/crypto/CryptoComponent.java

@@ -77,9 +77,6 @@ public interface CryptoComponent {
 	 */
 	SecretKey deriveFrameKey(byte[] secret, long streamNumber, boolean alice);
 
-	/** Returns a cipher for encrypting and authenticating frames. */
-	AuthenticatedCipher getFrameCipher();
-
 	/** Encodes the pseudo-random tag that is used to recognise a stream. */
 	void encodeTag(byte[] tag, SecretKey tagKey, long streamNumber);