Information disclosure device and decoding device, information disclosure manner and information disclosure program

摘要

The information tray creation device (10), pair of the encryption key and the decoding key is generated, information of disclosure is encrypted with the encryption key, information of encryption disclosure is generated. Consequently, the information tray creation device (10), the decoding key is encrypted with the open key ahead disclosing, decoding key information is generated. And, the information tray creation device (10), ahead disclosing the information tray in information, ahead disclosing and it appends in the information tray the pair of decoding key information as 1 records. After that, the information tray creation device (10), all disclosures being attached first the pair of decoding key information in the information tray, ahead disclosing and it appends.