Sending method, receiving method and device for service security call

The invention discloses a service security call sending method, receiving method and device, and the sending method comprises the steps: responding to a service call request sent by a server, enabling a client to obtain the request content, carrying out the interaction with a security authentication server, and obtaining the token information; extracting a symmetric key, an encryption algorithm and a secure hash algorithm from the token information; randomly generating a 64-bit serial number, and generating a message digest from the 64-bit serial number and the request content through a secure hash algorithm; encrypting the 64-bit serial number, the request content and the message digest through a symmetric key and an encryption algorithm to generate a request ciphertext; sending the request ciphertext and the token information to a server; according to the invention, security authentication of the client can be realized, and tampering prevention, stealing prevention and replay attack prevention of the servic