The invention belongs to the technical field of security mechanisms, and provides an
information processing method, device and equipment and a readable storage medium, and the method comprises the steps of building the connection with a business
system when a connection request of the business
system is received, and maintaining the connection state with the business
system; creating account information corresponding to the
service system, returning the created account information to the
service system, and the account information at least comprises an
encryption private key; when transactioninformation sent by a
service system is received, extracting an encrypted private key from account information carried by the transaction information, and decrypting the extracted encrypted private key to obtain a private key; and signing the
transaction data carried by the transaction information by using the decrypted private key, and returning the signed
transaction data to the business system,so that the business system performs transaction with an external system according to the signed
transaction data. According to the invention, the security of the private key of the service system can be ensured, so that the security of private information and assets of the service system is ensured.