In this book, with the ambition of accommodating security and governing of details, the work presents a technique which combines cryptography with compression. Cryptography is an art of hiding information through which we can keep our data defended. Compression is a technique for reducing size for saving space and transmission time. Cryptography and compression can be used for dealing with the aspects of security and manageability respectively. New double symmetric key encryption algorithms have been developed and associated with Huffman compression to guard and reduce the size of the data....