Information processing technique for data hiding

An information processing method comprising:

• receiving, by using a computer, one or plural processing instructions, each of which includes a result of an anonymizing processing, which is performed based on whether or not a plurality of data blocks that have a predetermined relationship exist, and a processing content to cause the result to be reflected, wherein each of the one or plural processing instructions is to be performed for a data block, for which the anonymizing processing has been performed;
• determining, by using the computer, whether or not processing instructions, which include the one or plural received processing instructions, before outputting satisfy a predetermined condition;
• upon determining that the processing instructions before outputting satisfy the predetermined condition, outputting, by using the computer, the processing instructions before outputting;
• and
• upon determining that the processing instructions before outputting do not satisfy the predetermined condition, keeping, by using the computer, the processing instructions before outputting.

An information processing apparatus, comprising:

• a memory;
• and
• a processor configured to use the memory and execute a process comprising:
• receiving one or plural processing instructions, each of which includes a result of an anonymizing processing, which is performed based on whether or not a plurality of data blocks that have a predetermined relationship exist, and a processing content to cause the result to be reflected, wherein each of the one or plural processing instructions is to be performed for a data block, for which the anonymizing processing has been performed;
• determining whether or not processing instructions, which include the one or plural received processing instructions, before outputting satisfy a predetermined condition;
• upon determining that the processing instructions before outputting satisfy the predetermined condition, outputting the processing instructions before outputting;
• and
• upon determining that the processing instructions before outputting do not satisfy the predetermined condition, keeping the processing instructions before outputting.