| 摘要 |
PROBLEM TO BE SOLVED: To provide an information processor capable of detecting whether data is identical or not while preventing excessive processing loads when a collision of hash values occurs. SOLUTION: When accepting a writing request including data, this information processor 100A acquires the first hash value based on a first hash function and acquires the second hash value based on a second hash function. If the acquired first hash value and the second hash value are not associated/stored in a storage device 110A, the information processor associates the data, the first hash value, the second hash value, and reference number information and stores them in the storage device. While, if the acquired first hash value and the second hash value are associated/stored in the storage device, the information processor changes the reference number information of associating/storing the first hash value and the second hash value so that the number indicated by the reference number information increases by one. COPYRIGHT: (C)2010,JPO&INPIT |
