| 摘要 |
A license delivery system 1000 allows intermediate nodes to modify a license within a range allowed by a license issuer. According to the license delivery system 1000, each of the intermediate nodes involved in the license delivery can verify if the license modifications have been correctly done by the intermediate nodes. Also according to the license delivery system 1000, a license issuer apparatus 2 adds, to an original license, original allowed modification information which defines a modifiable range of the original license. The intermediate nodes sequentially append, to a license 1 issued by the license issuer apparatus, the respective modified licenses that are modified within the modifiable range defined by the original allowed modification information.
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