001 package org.bouncycastle.crypto; 002 003 public interface StreamCipher 004 { 005 /** 006 * Encrypt/decrypt a single byte, returning the result. 007 */ 008 byte returnByte(byte var1); 009 010 void func_74850_a(byte[] var1, int var2, int var3, byte[] var4, int var5) throws DataLengthException; 011 }