Identity credential application method, identity authentication method, equipment and device

The invention provides an identity credential application method, an identity authentication method, equipment and a device, and the method comprises the steps that first equipment sends a first message to second equipment, and the first message comprises identity credential application information of the first equipment; the first equipment receives a second message sent by the second equipment, the second message comprises processed identity credential application information, and the processed identity credential application information is obtained after the identity credential application information of the first equipment is signed by a private key of the second equipment or obtained after the identity credential application information is encrypted by a symmetric key; the first equipment sends a third message to third-party equipment, the third message comprises the processed identity credential application information and is used for requesting the third-party equipment to register the identity credent