Title:
DATA PROVIDED WITH HASH AND METHOD FOR GENERATING SAID DATA
Document Type and Number:
WIPO Patent Application WO/2019/189019
Kind Code:
A1
Abstract:
[Problem] To add a signature to digital data that has been digitally converted by an A/D converter. [Solution] In a data recording device provided with a processor and an A/D converter, a method for generating data provided with a hash includes a step for preparing a pair of a public key and a secret key, a step Sa1 for converting an analog signal acquired by a sensor using the A/D converter and generating digital data configured from signal data and noise data, a step Sa2 for calculating a hash value for the signal data using a hash function by the processor, a step Sa3 for encrypting the hash value using one of the public key and the secret key, and a step Sa4 for writing the encrypted hash value into a noise area in which the noise data is recorded.
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Inventors:
ARAKI MASAYUKI (JP)
Application Number:
PCT/JP2019/012577
Publication Date:
October 03, 2019
Filing Date:
March 25, 2019
Export Citation:
Assignee:
ALAB INC (JP)
International Classes:
H04L9/32; G06F21/64; G09C1/00
Foreign References:
| JP2009140609A | 2009-06-25 | |||
| JP2013065969A | 2013-04-11 | |||
| JPH05277090A | 1993-10-26 | |||
| US20070106424A1 | 2007-05-10 |
Attorney, Agent or Firm:
MORIWAKI IP, P.C. (JP)
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