Method for signing application, and service platform

A method for signing an application using a service platform, further comprising:

• receiving a download request that is sent by a transaction terminal, and the download request comprising an identification of an application to be installed;
• determining an installation package of the application to be installed corresponding to the download request according to the identification;
• obtaining signature data associated with the installation package and sending the installation package and the signature data to the transaction terminal, the installation package and the signature data indicating that the transaction terminal obtains a signed application package by combining the installation package and the signature data and installs the installation package after the signed application package is verified.

(canceled)

A service platform, wherein the service platform comprises a storage device, a processor, and a computer program stored in the storage device and executable on the processor, the processor is caused to:

• receive a download request that is sent by a transaction terminal, and the download request comprises an identification of an application to be installed;
• determine an installation package of the application to be installed corresponding to the download request according to the identification;
• obtain signature data associated with the installation package and send the installation package and the signature data to the transaction terminal, the installation package and the signature data indicating that the transaction terminal obtains a signed application package by combining the installation package and the signature data and installs the installation package after the signed application package is verified.

(canceled)