| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a corporate bond purchase system which conceals information on investors who desire to purchase corporate bonds or CP (commercial paper). <P>SOLUTION: Each applicant's terminal 2 encrypts an application form 1-7 by use of a public key 1-4 obtained from an operator's terminal 3 by use of an encryption tool 1-8, and creates an outgoing mail pack 1-9. The mail packs 1-9 created are registered in the operator's terminal 3. The names of the applicants are concealed. If the number of applicants has reached a certain limit after the period of application has expired, the outgoing mail packs 1-9 are decrypted and a list of the applicants' names and the operator' name is reported to a bond issuer's terminal 1. If the number of applicants has not reached the limit after the period of application, the applicants' names so far and the operator's name are not decrypted nor disclosed to anyone. Then the entire application process is suspended and all the outgoing mail packs 1-9 are disposed of. <P>COPYRIGHT: (C)2004,JPO |
