SIGNATURE VERIFICATION DEVICE, SIGNATURE GENERATION DEVICE, SIGNATURE PROCESSING SYSTEM, SIGNATURE VERIFICATION METHOD, AND SIGNATURE GENERATION METHOD
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United States of America Patent
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Issued Date -
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app pub date -
Dec 4, 2015
filing date -
Dec 16, 2014
priority date (Note) -
Published
status (Latency Note)
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Abstract
A signature verification device includes a communicator that receives a second server certificate including a second public key and receives signature data which is generated by encrypting a hash value derived from the second server certificate using a secret key forming a key pair with the first public key, a signature processor that decrypts the signature data by using the first public key stored in the storage to acquire a first hash value, a unidirectional function deriver that derives a second hash value from the second server certificate, and a signature verifier that determines a signature generation device generating the signature data to be correct in a case of the first hash value and the second hash value matching. Decrease of accuracy of signature verification is reduced with reduced cost and secured security.
First Claim
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Family
| Country | kind | publication No. | Filing Date |
|---|---|---|---|
| JP | A | JP2016116134 | Dec 16, 2014 |
| WO | A1 | WO2016098303 | Dec 04, 2015 |
International Classification(s)
- 2015 Application Filing Year
- H04L Class
- 33706 Applications Filed
- 25909 Patents Issued To-Date
- 76.87 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 2 Citation Count
- H04L Class
- 11.47 % this patent is cited more than
- 8 Age