electronic payment systems

A comprehensive term for a wide range of systems that electronically manage payment and receipt of payment over the net. Commonly used electronic payment systems include SET, SSL, PKI, and encryption.

To be specific, digital cash is used to describe the electronic cash or digital currency being transferred, such as bitcoin. Whereas an e-wallet refers to the actual, portable personal profile that stores a user's shipping address, billing address, and credit card information in one secure place, such as Paypal or any other mobile payment system.