Digital signature forming and keys protection based on person´s characteristics

In today´s commercial environment, establishing a framework for the authentication came with different challenges, need of secure document exchange, secure bank transactions, and other e-commerce needs. Challenges are in term of confidentiality. Digital signature (DS) is the only means of achieving it. This paper shows a method in signing and verifying a document digitally online. A document is first signed, using a Secure Hash Algorithm - 160 (SHA-1), then protected by sender´s keys. The receiver verifies the signature using keys stored in the smart card (SMC) that is derived from his fingerprint. This paper investigates DSs techniques that is based on use of SMCs. It shows how true user identity can be verified when used keys are derived from human characteristics. The obtained results were translated in term of speed and security enhancement which is highly in demand of e-commerce society.