Data process apparatus and method therefor

Details Data process apparatus and method therefor Data process apparatus and method therefor

2003-05-09

2008-12-09

Zand, Kambiz (Department: 2134)

Cryptography

Video cryptography

Video electric signal modification

C380S210000, C380S287000, C713S176000

Reexamination Certificate

active

07463736

ABSTRACT:
In an image process apparatus, a key different for each level of hierarchy is generated on the basis of a specific key with respect to image data having a hierarchical structure, the image data in each level of the hierarchy is encrypted using the generated key for each level, and the specific key is managed, so that key management can be easily performed while the image data having a hierarchical structure is enciphered using different keys for each level of the hierarchy.

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