Digital certificate A digital signature is a mechanism that is used to verify that a particular digital document, message or transaction is authentic. A digital certificate is a computer file which officially approves the relation between the holder of the certificate and a particular public key. Digital signatures are used to verify the trustworthiness of the data being sent Digital certificates are used to verify the trustworthiness of the sender. Digital signature is to ensure that a data remain secure from the point it was issuedand it was not modified by a third party.
Digital certificate binds a digital signature to an entity It provides authentication, non-repudiation and integrity It provides authentication and security. A digital signature is created using a Digital Signature Standard (DSS). It uses a SHA- or SHA- algorithm for encrypting and decrypting the message. A digital certificate works on the principles of public key cryptography standards (PKCS).
It creates certificate in the X. or PGP format. The document is encrypted at the sending end and decrypted at the receiving end using asymmetric keys. A digital certificate consist of certificate's owner name and public key, expiration date, a Certificate Authority 's name , a Certificate Authority's digital signature Chapter E-Commerce Security Systems version CHAPTER version CHAPTER - - - - Chapter E-Commerce Security Systems Today, all browsers in the market support SSL, and most of the secure communications are proceeded through this protocol.
SSL works completely hidden for the user, who does not have to intervene in the protocol. The only thing the user has to do is make sure the URL starts with https:// instead of http:// where the “s” obviously means secured. It is also preceded by a green padlock. 3D Secure “ -D Secure is a secure payment protocol on the Internet.
It was developed by Visa to increase the level of transaction security, and it has been adapted by MasterCard. It gives a better authentication of the holder of the payment card, during purchases made on websites. The basic concept of this (XML-based) protocol