发明名称 |
DIGITAL DATA FILE ENCRYPTION APPARATUS AND METHOD |
摘要 |
According to an embodiment, the invention provides a method for decrypting content, the comprising: receiving the content without a source encryption key from a source device connected to the electric reproducing device, the content having been encrypted with the source encryption key in the source device; performing a first addition operation by using a first device internal key and an ID, the first device internal key being associated with the electric reproducing device; generating a device encryption key based on an output of the first addition operation and a second device internal key by using a predetermined encryption algorithm, wherein the second device internal key is associated with the electric reproducing device; decrypting the content using the device encryption key; decoding the decrypted content; and outputting the decoded content.
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申请公布号 |
US2010262838(A1) |
申请公布日期 |
2010.10.14 |
申请号 |
US20100823016 |
申请日期 |
2010.06.24 |
申请人 |
CHO YOUNG-SOON;KANG MYEONG-JOON;KIM JAE-YOUNG;JUNG HAN |
发明人 |
CHO YOUNG-SOON;KANG MYEONG-JOON;KIM JAE-YOUNG;JUNG HAN |
分类号 |
G06F21/22;G11B20/10;G06F7/00;G09C1/00;G10K15/02;G11B20/00;H04L9/08;H04L9/32 |
主分类号 |
G06F21/22 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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