The invention discloses an authentication method and system, equipment and a medium. The cloud computing service equipment presets an authentication key and a signature algorithm in access end equipment in advance; further, when the access end equipment is authenticated, a corresponding signature algorithm is executed on the random key through the own authentication key to generate an authentication signature; and through consistency comparison between the authentication signature and the standard signature, whether an authentication key and a signature algorithm used by the access end equipment are consistent with a preset authentication key and a signature algorithm or not is judged, and whether the access end equipment is reliable equipment or not, i.e., whether the authentication is passed or not is judged. According to the method, the accuracy and safety of the data acquired by the access end equipment are relatively ensured, and the safety guarantee is provided for the data processing of the cloud computing service equipment. In addition, the invention also provides an authentication system, equipment and a medium, which have the same beneficial effects.

Authentication method and system, equipment and medium

The embodiment of the invention discloses a joint digital signature generation method, electronic equipment and a computer readable medium. A specific embodiment of the method comprises the steps of obtaining target data; generating a public key; sending the target data, the public key, a first terminal name and a second terminal name to a first terminal and a second terminal, generating and returning, by the first terminal, a code and an authorization certificate of the first terminal, and by the second terminal, generating and returning a code of the second terminal; sending the received authorization certificate generated by the first terminal to the second terminal; transmitting the received code of the second terminal to the first terminal, and generating a first signature by the first terminal; transmitting the received code of the first terminal to the second terminal, and generating a second signature by the second terminal; and obtaining a joint signature of the target data based on the first signature and the second signature. The method can realize joint signature of multiple users.

Joint digital signature generation method, electronic equipment and computer readable medium

A computer-implemented method for escrowing secret data in a server of a client-server network, the client-server network comprising: a first client having at least one public and private client key pairs, at least one trusted client having at least one public and private trusted client key pairs, a server having a public and private server key pairs, a blockchain system comprising a plurality of nodes which are configured to store the public keys of the elements of the client-server network. It is also described a computer-implemented method for obtaining secret data of a server wherein the secret data is escrowed with the above computer-implemented method for escrowing secret data in a server. System, computer-readable mediums and computer programs, which are configured to implement or perform said computer-implemented methods, are also described.

Kuchkovsky Jiménez Carlos

Papers

Blockchain based joint blind key escrow

Joint blind key escrow