Information concealing control apparatus, information concealing apparatus, information reconfiguration control apparatus, information reconfiguring apparatus, information concealing system, information concealing control method, information reconfiguration control method, information concealing control program, and information reconfiguration control program

An information reconfiguration control apparatus comprising:

• a memory storing instructions;
• and
• one or more processors configured to execute the instructions to:
• extract information related to a seed from first concealment information generated by a concealment information generating unit generating concealment information based on input information, the first concealment information being capable to reconfigure first information;
• generate a reconfiguration-side pseudo-random number, based on the information related to the seed being extracted;
• convert input second information into second conversion information by using the reconfiguration-side pseudo-random number;
• and
• cause a reconfiguring unit configured to reconfigure information concealed as the concealment information to reconfigure the first information concealed as the first concealment information, based on the second conversion information and the first concealment information.

An information concealing control method comprising:

• generating a pseudo-random number from a seed;
• performing converting processing of converting first information being input into first conversion information by using the pseudo-random number;
• and
• causing a concealment information generating unit generating concealment information based on input information to generate first concealment information capable to reconfigure the first information, based on the first conversion information.

An information reconfiguration control method comprising:

• extracting information related to a seed from first concealment information generated by a concealment information generating unit generating concealment information based on input information, the first concealment information being capable to reconfigure first information;
• generating a reconfiguration-side pseudo-random number by using the seed being extracted;
• converting input second information into second conversion information by using the reconfiguration-side pseudo-random number;
• and
• causing a reconfiguring unit configured to reconfigure information concealed as the concealment information to reconfigure the first information concealed as the first concealment information, based on the second conversion information and the first concealment information.