Secret information distribution system, secret information distribution method and program


Ontology type: sgo:Patent     


Patent Info

DATE

N/A

AUTHORS

Satoshi Obana

ABSTRACT

Secret information is encoded/distributed into distributed information according to access structure, a random number sequence corresponding to number of pieces into which the secret information is distributed is generated by randomly selecting polynomial coefficients, the coefficients are encoded/distributed into random number information according to access structure, a hash function whose hash values correspond to the random number sequence is generated, keys for which the hash function applies are selected so as to individually set data for checking whether restored secret information is being manipulated as number of pieces of check data corresponding to number of pieces into which the secret information is distributed, the distributed information is read, the secret information is restored; the random number information is read, the random number sequence is restored, the check data is read, and the restored secret information is judged as not being manipulated when the read check data satisfies the hash function. More... »

Related SciGraph Publications

  • 1989-10. How to share a secret with cheaters in JOURNAL OF CRYPTOLOGY
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