| 摘要 |
PURPOSE: A business model of digital contents security for online distribution is provided to enable only a valid user to use contents by preventing the illegal distribution of the media contents, which is made by current contents companies with an open format. CONSTITUTION: Source data for each media file is extracted. An original message is generated by the extracted information. The original contents are modified through the contraction generating encryption by using the original message. The AES(Advanced Encryption Standard) is applied when the original message is encrypted/transmitted. The RSA(Rivert, Shamir, and Alerman) encryption is applied to prevent singleness of the AES keys. The encryption message, a CAES key encrypted by a public key of a buyer, and the modified media contents are transferred to the buyer.
|
