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.
