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The booming of technologies these days make us more comfortable and also take us into the complex world. As information increases rapidly, the level of security also matters. As a technological paradigm, the security can be done using many cryptography techniques. Cryptography is a process of converting a plain text into a cipher text so that the data can be viewed or extracted only by an intended user. In this paper, we describe a methodology inorder to enhance the speed of encryption and decryption process. This process uses ciphertext formation via Imbricate Cryptography and Polygram Substitution Cipher Technique. On performing cryptography, there are a lot of improvements in the actual implementation. Most importantly, the advantage of combining these two algorithms is to make data more secure from the exploiters and also making the computer to process faster.

Cryptography is a way to protect certain messages that have confidential properties or have properties that must be protected from unrelated parties. Substitution techniques have several algorithms such as hill cipher, vigenere cipher, one-time pad and others. This research is a development of previous research that has been carried out many combine substitution techniques. This research combines 4 substitution techniques that have been modified and stored messages that have been hidden into an image with the Least Significant Bit (LSB) algorithm. This research provides additional before the process of standard substitution techniques so that it will provide a more level of security even though the encryption process uses simple techniques and inserts messages into an image with PNG extension using LSB to improve security in messages. This is evidenced by the absence of color differences in the image so that it will not arouse suspicion. However, hex and the size of the image will change. besides this research found that images can only be implemented on social media such as Google+, Telegram, and Google Drive. Because social media like Facebook, WhatsApp, Instagram, and Pinterest will automatically convert, resizing to be smaller than the actual size.

Data Encryption is often widely used tool to provide security features. It translates the clear text into code such that it can only be accessed with the person who has the appropriate key. The recovery of clear text from such an unscrambled data is deciphering. Enciphering can be implemented by using some substitution technique, shifting technique or even mathematical logics. Application of such types of techniques is difficult to retrieve clear text. In the bygone times, several symmetric key base algorithms have been developed. This paper enlightens and analyzes the substitution ciphers and transposition ciphers. With the comparison of different parameters used in the algorithms give significance of the algorithm.