Identification-based encryption system

Abstract

This invention relates to an identity-based encryption system. The invention provides the method (300) to exchange information safely by unsafe communication system, and which provides the electronic equipment (100) for implementing the method (300).This method makes sure (320) the identifier associated to the expected recipient of user's information, and then which uses a generation process of identity-based encryption function and identified identifier to generate (330) an encryption function related to the expected recipient based on identity. Next, the method decrypts (340) the user's information by using identity-based encryption function, and then which transports messaging (350) to the expected recipients by the decrypted user.

Description

technical field [0001] The present invention relates to the encryption and decryption of messages sent over a public network such as a mobile telephone network or the Internet. Background technique [0002] Communication systems in which security is provided for messages sent over public or non-secure networks generally apply public key cryptography, wherein the sender requests a public key from the intended recipient and encrypts the message using the received public key. When an encrypted message is received by recipients, they are able to decrypt the message using their corresponding private or secret key. This form of cryptography is typically used to secure Internet-based communications. [0003] In a mobile telephony network, the network and the mobile phone typically share a secret key that they use to encrypt and decrypt communications between them over the air interface. Generally, a mobile phone receives a secret key from an inserted SIM or RUIM card. However, t...

AI Technical Summary

Problems solved by technology

However, this is only suitable for communication between the network and the mobile phone, not between different users of the mobile phone

Images