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Novel timestamp signature verification method for block chains and embedded systems

A time stamp and embedded technology, applied in data processing applications, instruments, calculations, etc., can solve the problem of non-unique BER encoding and achieve the effects of reducing storage space, improving low performance, and reducing signature process steps

Active Publication Date: 2018-12-18
江苏先安科技有限公司
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AI Technical Summary

Problems solved by technology

At present, BER (Basic Encode Rules) encoding is often used, but BER encoding has the property that the encoding is not unique, that is to say, the same object may generate several different encoded data through BER encoding

Method used

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  • Novel timestamp signature verification method for block chains and embedded systems
  • Novel timestamp signature verification method for block chains and embedded systems
  • Novel timestamp signature verification method for block chains and embedded systems

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Embodiment Construction

[0058] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0059] The time stamp format created by the present invention is mainly stored in the following content format, and the encoding rules are written according to the ASN1 encoding writing specification.

[0060] 1. A new timestamp format.

[0061]

[0062] where signatureAlgorithm is the signature algorithm.

[0063] SignatureValue is the signature value obtained by TSA using the signatureAlgorithm signature algorithm after encoding the timestamptoken structure DER with the private key corresponding to the TSA certificate.

[0064]

[0065] Where id-timeStamping is the OID definition of this timestamp format, specifically defined as

[0066] a) id-time Stamping OBJECT IDENTIFIER.

[0067] b) The version field indicates the version number of the timestamp, which is 1 according to this document.

[0068] c) The messageImprint fi...

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Abstract

The invention discloses a novel timestamp signature format suitable for block chain and embedded field, and a signature and verification method thereof, comprising: an ASN1 string comprising trusted time and related information, a signature algorithm and a signature value. Trusted time and related information include timestamp OID, version number, signature message fingerprint (optional), timestamp policy (optional), nonce (optional), trusted time, trusted time precision, TSA certificate unique ID, etc., and signature flow using this timestamp, verification flow.

Description

technical field [0001] The present invention is applied to the field of public key infrastructure system (PKI), and provides a lightweight, safe and efficient composition format, signature method, and verification method for digital time stamps, making digital time stamps more suitable for embedded and area blockchain field. Background technique [0002] digital certificate [0003] A digital certificate is a stamp or seal (or a signature added to a digital ID card) stamped on a digital ID card by an identity authentication agency through cryptography. It is issued by an authoritative organization CA (Certificate Authority, Certificate Authority Center). The identity in the digital field can solve the problem of "who am I" in the virtual and network fields through digital certificates. [0004] digital signature [0005] Digital signature is to use public key encryption algorithm to digitally sign data, which can not be forged and cannot be repudiated. my country has imp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q20/38
CPCG06Q20/3825G06Q20/3829
Inventor 庄昱垚赵统一张晏斌王强董必成
Owner 江苏先安科技有限公司
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