It also performs payments in SIP efficiently and takes into account the secure exchange of payment information, unlike other existing proposals.
Finally, our proposal guarantees that the exchange of payment information is made in a secure way and offers protection against forgery or double-spending.
The main drawbacks of these proposals are that they are either not suitable for micropayments or they do not consider the secure and efficient exchange of payment information.
Bitcoin - a system of open source peer-to-peer software for the creation and exchange of (payment in) a certain type of cryptocurrency.
However, if we review the latest micropayment protocols defined [14 16], these have not considered the secure exchange of payment information or if they have defined it, they use asymmetric cryptography.
We have also considered the secure exchange of payment information by using symmetric cryptography in order to guarantee authentication, confidentiality and integrity in a more efficient way than S/MIME or TLS, which require asymmetric cryptography, which is computationally less efficient than symmetric cryptography.
With this intent, several voices have recently been raised in order to urge authorities to develop a 'New Deal' [205] on data ownership, in which users would own their personal data as well as the decisions to provide it - in exchange of payment - to companies interested in their usage.
The complaint contended that Intel had struck exclusive agreements with computer makers in exchange for payments of billions of dollars "in a systematic worldwide campaign of illegal, exclusionary conduct to maintain its monopoly power and prices".
The government had signed contracts with the utilities promising to start accepting the spent fuel in 1998 in exchange for payments of one-tenth of a cent per kilowatt-hour generated into a Nuclear Waste Trust Fund.
In a joint investigation by Channel 4 Dispatches and the Telegraph, former Labour foreign secretary Jack Straw and Conservative chairman of the Intelligence and Security Committee Sir Malcolm Rifkind were filmed offering to use their political influence on behalf of a fictitious Chinese company in exchange for payments of at least £5,000 a day.
On trial with him are three government officials suspected of acting as his "protection umbrellas" in exchange for payments of about $100,000 each.
