Image encrypting method and device, image decrypting method and device, and recording medium
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 24, 2002
Grant Date -
N/A
app pub date -
Aug 25, 1999
filing date -
Aug 25, 1998
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
When image data has been decomposed into a plurality of components, and a plurality of components of the components have been encrypted, the encrypted image file must be able to be used without confusion. On a component decomposing apparatus, image data is decomposed into a plurality of components for the hierarchical levels, for example. On an encrypting apparatus, a plurality of components of the components are encrypted. And, on an encrypting information preparing means, encrypting information H concerning the contents of this encryption is prepared, and from the encrypted components and the non-encrypted components, and the encrypting information H, an encrypted image file F is generated on an encrypted image file generating apparatus. When the encrypted image file F is to be decrypted, the encryption contents of the encrypted components can easily be grasped by referring to the encrypting information H.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully