Extensive compression of text messages in interactive mobile communication

An extensive text message increases the message payload size causing a standard text message to be stripped into several concatenated message. Sending such concatenated messages to transmit a single message is a major drawback considering the cost associated in sending out multiple messages. In this paper, we propose an extensive text message compression technique having message confidentiality, authenticity and integrity with cryptographic protection to enhance security. Initially, the extensive text message is compressed using the MD5 algorithm into a cipher text that consists of 32 characters. The encryption is performed by using an initialization vector and a secret key while extensive message compression is achieved simultaneously. Finally, this cipher-text is transmitted through the SMS gateway to the recipients who will decompress the cipher-texts into its original form. Results indicate that message delivery time is not affected by the proposed mechanism.