Unlock instant, AI-driven research and patent intelligence for your innovation.

Identity-based safe generalized signcryption method under standard model

A standard model and identity technology, applied in user identity/authority verification, digital data protection, etc., can solve problems such as inability to construct instances

Inactive Publication Date: 2015-04-01
CHANGAN UNIV
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is a provably safe scheme under the random oracle model, but it is impossible to construct corresponding examples in specific applications

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Identity-based safe generalized signcryption method under standard model
  • Identity-based safe generalized signcryption method under standard model
  • Identity-based safe generalized signcryption method under standard model

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0043] This secure identity-based generalized signcryption method under the standard model includes three working modes: signcryption, signature, and encryption; only one mode occurs at a time. When the receiver receives the generalized signcryption signature for verification or decryption During signcryption, if the verification and decryption result is consistent with the signed message, it means that the ciphertext is accepted; otherwise, it means that the ciphertext is rejected. The signcryption is the simultaneous realization of two functions of digital signature and encryption in one logical step; the signature is that the sender signs a message or file in electronic form, and the signed message or file can be transmitted on a computer network and indicates The signer is responsible for the content of the message or file; the encryption is the use of technical means to transfer important data into garbled codes.

[0044] The method is implemented in the following steps:

[0...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an identity-based safe generalized signcryption method under a standard model. The method extracts a private key of a user at first, then performs identity-based generalized signcryption after extraction of the private key, and then decrypts the signcryption. When a receiver receives a signature (signature function) or a cryptograph (encryption function and signcryption function) to perform verification or decryption, and if the cryptograph passes the verification after being decrypted, acceptance is output, otherwise refusal is output. The invention relates to an identity-based generalized signcryption method under a standard model, which is based on a computational Diffie-Hellman difficult problem (CDH) and a determining bilinear Diffie-Hellman difficult problem (DBDH), and can realize three functions of signcryption, signature and encryption, thereby protecting confidentiality, integrality, unforgeability and non-repudiation of an electronic document.

Description

Technical field [0001] The invention belongs to the technical field of computer information security, and relates to a signcryption method, in particular an identity-based generalized signcryption method that can be proved safe under a standard model. Background technique [0002] In 1997, Professor Yuliang Zheng from the University of North Carolina at Charlotte proposed the concept of signcryption for the first time. The core idea is to implement both digital signature and public key encryption in a logical step. Compared with encryption or first encryption and then signature methods, signcryption technology can reduce computational cost and communication overhead. Because of its special functions, it is widely used in practical applications such as firewalls, electronic cash and key distribution. Although signcryption is highly efficient in situations where both encryption and authentication functions are required, when the system only needs confidentiality or authentication,...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04L9/32G06F21/64
Inventor 明洋冯杰
Owner CHANGAN UNIV