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Contract creation program, contract validation program, final encryption creation program, contract creation system, contract validation system, and final encryption creation system
Contract creation program, contract validation program, final encryption creation program, contract creation system, contract validation system, and final encryption creation system
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机译：合同创建程序，合同验证程序，最终加密创建程序，合同创建系统，合同验证系统和最终加密创建系统
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摘要
A computer-readable recording medium records a contract creation program for creating a contract image of a contract executed by parties each having private key. The program causes a computer to perform steps of: creating, for each party, a signature image of handwritten signature; creating, for each party, signature identification information for identifying the signature image; creating text identification information for identifying contract body text; creating, for each party, an intermediate cipher by enciphering the signature identification information of the party and the text identification information with the private key of the party; creating, for each party, a final cipher by enciphering the signature identification information of the party and the intermediate ciphers of all other parties with the private key of the party; creating an optical mark from each final cipher; and creating the contract image including the text, the signature images, and the optical marks disposed in predetermined columns.
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