International Journal of Engineering and Technology

Storage space is very precious in hand-held devices. Thus it is very important to utilize the space in phone’s Internal and external memory effectively. This paper proposes a technique for compression of data and security of compressed data in hand-held devices. The proposed technique is based on SMART DICTIONARY BASED ENCODING and DECODING (SDBED) which compresses the data in phone’s memory. When hand-held device receives a file/SMS, long English words will be replaced by small integer numbers. Then these lengthy English words are compressed. Thus in different phases most of the English words are compressed and the compressed text is self-encrypted with self-key. This paper describes the SMART DICTIONARY BASED ENCODING and DECING (SDBED) Compression Technique for files/SMS in hand-held devices.