The invention relates to the technical field of electronic signatures, in particular to an
aviation equipment
purchasing electronic seal generation method and
system based on a block chain, and the method comprises the following steps: based on
aviation equipment
purchasing demand data, through a block
chain network, matching the identity of merchant information in the data, including the recognition information of a purchaser and a salesperson, and generating a
verification identity identifier; according to the method, the seal data is protected by applying asymmetric
encryption, so that the
personalization and specificity of the seal are enhanced, the security of the data in the transmission and storage process is ensured through
encryption, the electronic seal data are published into the block
chain network, a
unique identifier is generated by utilizing a
hash function, and the publishing state is tracked in real time; according to the method, the tampering resistance of data is guaranteed, the comprehensive auditing tracking capability is provided,
technical support is provided for law and compliance review, the efficiency and transparency of a
purchasing process are remarkably improved, fraudulent behaviors in a supply chain are reduced, meanwhile, the
purchasing process is accelerated, and additional trust and value are provided for users and enterprises.