Secure Spreadsheet Data File Transferring System

Abstract

Advent technology of security for secret important data and information is called the Cryptography. Cryptography is an important aspect of communications security and is a basic building block for computer security. However, the term today refers to the science and of transforming message to make them secure. The Advanced Encryption Standard (AES) is computer security standard. SHA cryptographic hash function is that a hash-value serves as a message digest of an input string. This thesis provides the encryption and decryption system for desire cells in excel (spreadsheet file) that can be used to build a secure and hash code for one or more files of person identifiable data. The proposed system is a data transferring system, which send encrypted excel data file from one place to another on network. This system implements AES-128 and SHA-256 algorithm improve the security of excel data file even on insecure network.