Data Encryption Using Square Grid Transposition With Cryptography DSA Technique

Data encryption is the conversion of data into a form, called a ciphertext, that cannot be easily understood by unauthorized people. Decryption is the process of converting encrypted data back into its original form, so it is easily understood. In literature, different techniques are used for encryption and decryption of text, image, audio and video. RSA (Rivest, Shamir, Aldeman) encryption technique has been used for encryption of text using data encryption technique with square grid transposition with key wrapping(2,3). In this paper work, a modified approach for the encryption of the text is used called the DSA (Digital Signature Algorithm) encryption algorithm. The binary data of file is divided into equal sized blocks called as grids.