A Universal Hierarchical Signature Encryption System and Construction Method

Abstract

The present invention provides a general-purpose hierarchical signature encryption system and construction method, which operates the system parameter generation algorithm of public key encryption and non-interactive zero-knowledge knowledge proof to obtain corresponding parameters, selects a one-way function F, and comprehensively obtains public parameters; generates Sign the private key and public key, calculate the one-way function value of the signature private key as a random number, run the underlying public key encryption key generation algorithm, and output the obtained decrypted private key; The public key obtained by the key generation algorithm, according to the function G and the one-way function F, constructs the one-way relationship between the signature private key and the public key, and generates the knowledge proof of the signature private key as the signature of the message; the verifier uses the public key And the message to be signed and the signature are input, the public key is parsed into an instance, the message is parsed into an auxiliary input, the signature is parsed into a certificate, and the signature is verified; the present invention can add a signature function to the public key encryption scheme of the deployed application, and convert it to Upgrade to a hierarchical signature encryption scheme.

Description

technical field

[0001] The invention belongs to the technical field of communication encryption, and in particular relates to a general hierarchical signature encryption system and construction method. Background technique

[0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art.

[0003] Public key encryption and digital signatures are the most commonly used cryptographic algorithms. In most privacy protection applications, it is necessary to use public key encryption and digital signature to provide confidentiality protection and authentication protection of communication respectively.

[0004] As far as the inventor knows, the current common deployment method adopts the key separation strategy, that is, each user runs the key generation algorithm of public key encryption and digital signature separately to generate two independent key pairs. The advantage of this method is ...

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