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A secure two-way heterogeneous digital signature method between pki and ibc

A digital signature, heterogeneous technology, applied in digital transmission systems, secure communication devices, user identity/authority verification, etc., can solve problems such as being unable to meet user communication requirements.

Active Publication Date: 2021-04-16
SOUTH CENTRAL UNIVERSITY FOR NATIONALITIES
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AI Technical Summary

Problems solved by technology

[0005] Before 2010, users communicated based on the same cryptographic system, based on the public key infrastructure environment, or based on the identity environment, or based on the non-certificate environment, but the communication parties all over the world use different cryptographic systems, so only in one environment Medium communication, can no longer meet the user's communication requirements

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  • A secure two-way heterogeneous digital signature method between pki and ibc
  • A secure two-way heterogeneous digital signature method between pki and ibc
  • A secure two-way heterogeneous digital signature method between pki and ibc

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no. 1 example

[0114] The first embodiment is: if the user in the public key infrastructure environment is the signer, the user in the identity-based encryption environment is the verifier;

[0115] The second embodiment is: if the user in the identity-based encryption environment is the signer, the user in the public key infrastructure environment is the verifier.

[0116] The specific steps of the first embodiment involved in the present invention are:

[0117] Step 1: The private key generation center selects a cyclic addition group and a cyclic multiplication group whose order is a prime number to generate a bilinear pair, defines two collision-free hash functions, and randomly selects a number from an integer group whose order is a prime number as the master key key and set the master public key to disclose system parameters;

[0118] The private key generation center selects a cyclic addition group and a cyclic multiplication group whose order is a prime number to generate a bilinear ...

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Abstract

The invention discloses a secure two-way heterogeneous digital signature method between PKI and IBC. The present invention generates system parameters through the private key generation center, and discloses the system parameters; users in the public key infrastructure environment and users in the identity-based encryption environment generate their respective public keys and private keys; users in the public key infrastructure environment are signers, The user in the identity-based encryption environment is the verifier, the signer generates a signature, sends it to the verifier, the verifier verifies the signature, and accepts the message if the verification passes, otherwise, refuses to accept the message; the user in the identity-based encryption is the signer, public key infrastructure The user of the environment is the verifier. The signer generates a signature and sends it to the verifier. The verifier verifies the signature. If the verification passes, the message is accepted; otherwise, the message is rejected. The invention protects the security, correctness, non-repudiation and non-forgery of the communication between the public key infrastructure and the user based on the identity encryption environment, and meets the security and privacy requirements.

Description

technical field [0001] The invention belongs to the technical field of user communication security, and in particular relates to a secure two-way heterogeneous digital signature method between PKI and IBC. Background technique [0002] Public Key Infrastructure (PKI) is the main means of deploying traditional Public Key Cryptography (PKC) at present. The identity of a user is bound to a certificate, and the identity of a user and its public key are linked The binding relationship is obtained in the form of a digital certificate, which is issued to the user by a trusted certificate authority (Certificate Authority, CA). All data is signed by the certificate authority with its own private key to form a certificate. Before issuing a certificate to a user, the certificate authority first verifies the authenticity of the user's identity. Any communication party that trusts the certificate authority can establish a trust relationship with the other party by verifying the digital...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L9/32
CPCH04L9/3236H04L9/3247H04L9/3263
Inventor 孟博王潇潇王德军王俊
Owner SOUTH CENTRAL UNIVERSITY FOR NATIONALITIES
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