| 摘要 |
<p>An apparatus, system and machine-implemented method are provided for establishing a transaction between a first party and second party. The method comprises a first signing step in which a transaction message comprising a request and a transaction identifier is cryptographically signed by said first party to form a first cryptographically signed message. In a first transmitting step, said first cryptographically signed message is transmitted from said first party to said second party. The second party then cryptographically signs said first cryptographically signed message to form a second cryptographically signed message. The second cryptographically signed message is also transmitted from one or more of a plurality of parties having said second cryptographically signed message to a trusted third party. The trusted third party is able to verify that said second cryptographically signed message was cryptographically signed by said second party and can also verify that said first cryptographically signed message in said second cryptographically signed message was cryptographically signed by said first party. Furthermore, in response to positive verifications, the trusted third party manages execution of the request specified by said second cryptographically signed message.</p> |
