Method for encrypting and decrypting contents data distributed through network, and system and user terminal using that method
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
N/A
Issued Date -
Mar 6, 2003
app pub date -
Aug 31, 2001
filing date -
Aug 31, 2001
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A first key is generated at a server from contents information of contents data to be distributed. A second key is generated at the server from a variable parameter, a H/W key ID, and the first key, and then the generated second key is sent to a user terminal. From the variable parameter, the H/W key ID, and the second key, the first key is decrypted at the user terminal. The contents data to be distributed is encrypted by using the first key at the server. The encrypted contents data is sent to the user terminal. The encrypted contents data is decrypted at the user terminal by using the decrypted first key.
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