Online Money Transfer System Using ElGamal Digital Signature Scheme

Abstract

This paper presents money transfer transaction from bank to bank system to provide authentic, integrity services by using ElGamal public key digital signature and SHA-512 hash function algorithm. This system consists of two components: Signing and Verifying. Signing process is performed by sender and verifying process is performed by receiver. In signing process, administrator creates signature with its private key and send its signature & original ticket to other administrator. In receiving process, administrator computes hash code from original ticket and compares hash code from decrypted signature with its public key. The security of ElGamal signature algorithm is based on computing discrete logarithm over a finite large prime. The security of SHA-512 is large size of digest output. If two hash values are equal, the content of ticket message is not modified after signed and display ticket message of money transfer is successful. If two hash values are not equal, the content of ticket message is modified after signed.