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    • 3. 发明申请
    • Systems, Methods, and Media for Adding an Additional Level of Indirection to Title Key Encryption
    • 用于向标题密钥加密添加附加级别间接的系统,方法和介质
    • US20090028342A1
    • 2009-01-29
    • US12056626
    • 2008-03-27
    • Julian A. CerrutiMatthew Francis RutkowskiAmal Ahmed Shaheen
    • Julian A. CerrutiMatthew Francis RutkowskiAmal Ahmed Shaheen
    • H04L9/08H04L9/06H04L9/14
    • H04L9/0841H04L9/0891H04L2209/60
    • Systems, methods and media for encrypting and decrypting content files are disclosed. More particularly, hardware and/or software for adding an additional level of indirection to a title key encryption scheme are disclosed. Embodiments may include generating by a cryptographic system a binding key based on binding information. Embodiments may also include encrypting by the cryptographic system a secret key with the binding key and generating a title key associated with at least one content file. Embodiments may also include encrypting by the cryptographic system the title key with the secret key and the at least one content file with the title key. Further embodiments may include receiving an indication that the binding information has changed, generating a new binding key based on the new changed binding information, and re-encrypting the secret key with the new binding key.
    • 公开了用于加密和解密内容文件的系统,方法和介质。 更具体地,公开了用于向标题密钥加密方案添加附加级别的间接的硬件和/或软件。 实施例可以包括由密码系统基于绑定信息生成绑定密钥。 实施例还可以包括通过密码系统加密具有绑定密钥的秘密密钥并生成与至少一个内容文件相关联的标题密钥。 实施例还可以包括通过密码系统加密具有秘密密钥的标题密钥和具有标题密钥的至少一个内容文件。 另外的实施例可以包括接收绑定信息已经改变的指示,基于新改变的绑定信息生成新的绑定密钥,并用新的绑定密钥重新加密秘密密钥。
    • 6. 发明授权
    • Adding an additional level of indirection to title key encryption
    • 为标题密钥加密添加一个附加级别的间接
    • US07864953B2
    • 2011-01-04
    • US12056626
    • 2008-03-27
    • Julian A. CerrutiMatthew Francis RutkowskiAmal Ahmed Shaheen
    • Julian A. CerrutiMatthew Francis RutkowskiAmal Ahmed Shaheen
    • H04L9/00
    • H04L9/0841H04L9/0891H04L2209/60
    • Systems, methods and media for encrypting and decrypting content files are disclosed. More particularly, hardware and/or software for adding an additional level of indirection to a title key encryption scheme are disclosed. Embodiments may include generating by a cryptographic system a binding key based on binding information. Embodiments may also include encrypting by the cryptographic system a secret key with the binding key and generating a title key associated with at least one content file. Embodiments may also include encrypting by the cryptographic system the title key with the secret key and the at least one content file with the title key. Further embodiments may include receiving an indication that the binding information has changed, generating a new binding key based on the new changed binding information, and re-encrypting the secret key with the new binding key.
    • 公开了用于加密和解密内容文件的系统,方法和介质。 更具体地,公开了用于向标题密钥加密方案添加附加级别的间接的硬件和/或软件。 实施例可以包括由密码系统基于绑定信息生成绑定密钥。 实施例还可以包括通过密码系统加密具有绑定密钥的秘密密钥并生成与至少一个内容文件相关联的标题密钥。 实施例还可以包括通过密码系统加密具有秘密密钥的标题密钥和具有标题密钥的至少一个内容文件。 另外的实施例可以包括接收绑定信息已经改变的指示,基于新改变的绑定信息生成新的绑定密钥,并用新的绑定密钥重新加密秘密密钥。