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Method and apparatus for efficiently encrypting/decrypting digital content according to broadcast encryption scheme
Method and apparatus for efficiently encrypting/decrypting digital content according to broadcast encryption scheme
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机译:根据广播加密方案有效地加密/解密数字内容的方法和装置
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摘要
A method of and apparatus for encrypting and/or decrypting content according to broadcast encryption scheme. The decryption method includes: determining whether or not a revoked device among devices that have licenses for predetermined content is present; and according to the determination result, selectively decrypting a content key encrypted by using a key to prevent the revoked device from decrypting the predetermined content. By doing so, an unnecessary encryption process and decryption process that occur when there is no revoked device are avoided.
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