METHOD AND SYSTEM FOR ENCRYPTING OR DECRYPTING WMV STREAMING MEDIA
First Claim
1. A method for encrypting Window Media Video (WMV) streaming media, comprising:
- acquiring WMV streaming media;
generating a content key; and
encrypting the WMV streaming media using the content key.
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Abstract
Methods for encrypting or decrypting WMV streaming media are disclosed. The encrypting includes: acquiring WMV streaming media, generating a content key; and encrypting the WMV streaming media using the content key; the decrypting includes: acquiring WMV streaming media encrypted, encryption information and a content key; and decrypting the WMV streaming media encrypted according to the encryption information and the content key. Devices for encrypting or decrypting WMV streaming media are also disclosed. The scheme of encrypting or decrypting the WMV streaming media is enabled in a DRM system based on Open Mobile Alliance specifications and Internet Stream Media Alliance specifications, thus richly diversifying the content providers'"'"' choices on the media formats of on-demand streaming media.
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Citations
27 Claims
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1. A method for encrypting Window Media Video (WMV) streaming media, comprising:
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acquiring WMV streaming media;
generating a content key; and
encrypting the WMV streaming media using the content key. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for decrypting Window Media Video (WMV) streaming media, comprising:
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acquiring WMV streaming media encrypted, encryption information and a content key; and
decrypting the WMV streaming media encrypted according to the encryption information and the content key. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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21. An encryptor, comprising:
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a transceiver unit, configured to receive an Advanced Systems Format (ASF) file with WMV on-demand streaming media;
a key generation unit, configured to generate a content key; and
an encryption execution unit, configured to encrypt the Window Media Video (WMV) on-demand streaming media in the ASF file received by the transceiver unit using the content key generated by the key generation unit. - View Dependent Claims (22)
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23. A device for decrypting Window Media Video (WMV) streaming media, comprising:
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a unit for acquiring a rights issuer identifier carried in an Advanced Systems Format (ASF);
a unit for acquiring a Real Time Protocol (RTP) message carrying an encrypted data packet with WMV on-demand streaming media in the ASF file and encryption information;
a unit for acquiring a content key from a rights issuer according to the rights issuer identifier; and
a unit for decrypting the encrypted data packet with WMV on-demand streaming media carried in the RTP message according to the content key and the encryption information.
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24. A device for encrypting Window Media Video (WMV) streaming media, comprising:
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a first unit for acquiring WMV streaming media;
a second unit for generating a content key; and
a third unit for encrypting the WMV streaming media using the content key. - View Dependent Claims (25)
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26. A device for decrypting Window Media Video (WMV) streaming media, comprising:
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a first unit for acquiring WMV streaming media encrypted, encryption information and a content key; and
a second unit for decrypting the WMV streaming media encrypted according to the encryption information and the content key. - View Dependent Claims (27)
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Specification