The embodiment of the invention provides a service closed-loop
verification method, a storage medium and a program product. A private key which has service operation authority and is authenticated by a
server side is stored in a non-export area of an SIM card of
terminal equipment, so that the risk that the private key is stolen and tampered is effectively avoided, and the security of an
electronic signature is guaranteed from the key root; the
server determines the binding relationship between the terminal SIM and the public key by means of the
certificate, and verifies the
electronic document signed by the terminal in combination with the public key, so that double confirmation of the terminal identity and the authenticity of the
electronic document is realized, and the reliability of service
data transmission and
verification is ensured; meanwhile, the terminal and the
server side enable the electronic
receipt to become a core basis of a business
closed loop through a complete interaction process of signature request-
receipt signature-
verification confirmation, thereby efficiently completing the determination of the
business process closed loop, improving the normalization and
closed loop efficiency of business
processing, and improving the business
processing efficiency. The method is suitable for various terminal-server interaction service scenes needing to guarantee safety and reliability.