Research On Attribute-based Encryption Based On Internet Of Things

The Internet of things has not only a transport layer and an application layer similar to the traditional Internet,but also a special perception layer,through which data is acquired and then processed in the application layer.Data privacy and data security are very important problems.Attribute-based encryption(ABE)can prevent the unauthorized party from obtaining the plaintext,thus causing losses to the interests of others.However,in the Internet of things,due to the limited computing resources of devices.Attribute-based encryption based on bilinear mapping operation cannot be well applied in the Internet of things.Therefore,this paper mainly explores and studies the attribute-based encryption scheme in the Internet of things.In this paper,we first propose a policy hiding attribute-based encryption scheme based on elliptic curve.Compared with bilinear mapping,the attribute-based encryption scheme based on elliptic curve not only keeps the same difficulty hypothesis and cannot be solved in polynomial time,but also reduces the requirement for computing power of Internet of things devices.Policy hiding can prevent adversary from obtaining some sensitive information about data receiver.Ciphertext can be partially decrypted through the semi-trusted computing center,while the computing center cannot obtain the plaintext.The computing center reduces the computing resources needed by the data receiving equipment and further reduces the demand of the user equipment for computing resources.Secondly,in this paper,considering the data receiver and authority center to interact to obtain private key,is still likely to leak sensitive information about receiver.This paper will adopt the way of oblivious transmission to avoid leaking sensitive information,further to ensure privacy of data receiver.This paper puts forward a kind of oblivious transmission attribute-based encryption scheme based on elliptic curve.Again,this paper will put forward a kind of multi-authority attribute-based encryption in the case of a few search about multi-authority attribute-based encryption based on elliptic curve.This scheme extends to multi-authority,makes its solution in data receiver for their performance of the private key is not confined to a single attribute authority.At the same time,it reduces the risk of all key leak in case of breaking single attribute authority and meets the ability to resist conspiracy.Finally,this paper makes a horizontal comparison with other schemes about four perspectives of functional characteristics,communication overhead,computing overhead and experimental analysis,and verifies that the proposed scheme is feasible in the Internet of things...