公开(公告)号：US20100262838A1

公开(公告)日：2010-10-14

申请号：US12823016

申请日：2010-06-24

Applicant: Young-Soon CHO ,  Myeong-Joon Kang ,  Jae-Young Kim ,  Han Jung

Inventor： Young-Soon CHO ,  Myeong-Joon Kang ,  Jae-Young Kim ,  Han Jung

IPC: G06F21/22

CPC classification number: G11B20/10 ,  G11B20/00086 ,  G11B20/00115 ,  G11B20/00144 ,  G11B20/00152 ,  G11B20/00195 ,  G11B20/0021 ,  G11B20/00246 ,  G11B20/00347 ,  G11B20/00855 ,  G11B2020/00057 ,  H04L9/0866

Abstract: 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.

Abstract translation: 根据一个实施例，本发明提供了一种解密内容的方法，包括：从连接到电再现设备的源设备接收没有源加密密钥的内容，内容已经用源加密密钥加密在源设备 ; 通过使用第一设备内部密钥和ID来执行第一添加操作，所述第一设备内部密钥与所述电动再现设备相关联; 通过使用预定的加密算法，基于第一加法运算的输出和第二装置内部密钥生成装置加密密钥，其中第二装置内部密钥与电动再现装置相关联; 使用设备加密密钥解密内容; 对解密的内容进行解码; 并输出解码的内容。

公开(公告)号：US07639815B2

公开(公告)日：2009-12-29

申请号：US12506202

申请日：2009-07-20

Applicant: Young-Soon Cho ,  Myeong-Joon Kang ,  Jae-Young Kim ,  Han Jung

Inventor： Young-Soon Cho ,  Myeong-Joon Kang ,  Jae-Young Kim ,  Han Jung

IPC: H04L9/12

CPC classification number: G11B20/10 ,  G11B20/00086 ,  G11B20/00115 ,  G11B20/00144 ,  G11B20/00152 ,  G11B20/00195 ,  G11B20/0021 ,  G11B20/00246 ,  G11B20/00347 ,  G11B20/00855 ,  G11B2020/00057 ,  H04L9/0866

Abstract: A device and method for decrypting digital contents are discussed. According to an embodiment, a method for decrypting digital content at a target device, includes receiving the digital content without a source encryption key from a source device connected to the target device, the digital content having been encrypted with the source encryption key in the source device, wherein the source device is configured to perform an authenticating operation with the target device by using an identifier (ID) associated with at least one of the target device and a storage medium of the target device; performing a first addition operation by using a first target internal key and the ID; generating a target encryption key based on an output of the first addition operation and a second target internal key by using a predetermined encryption algorithm; and decrypting the encrypted digital content using the target encryption key.

Abstract translation: 讨论了一种用于解密数字内容的设备和方法。 根据一个实施例，一种用于在目标设备处解密数字内容的方法包括从连接到目标设备的源设备接收没有源加密密钥的数字内容，数字内容已经用源中的源加密密钥加密 设备，其中所述源设备被配置为通过使用与所述目标设备的目标设备和存储介质中的至少一个相关联的标识符（ID）来执行与所述目标设备的认证操作; 通过使用第一目标内部密钥和ID来执行第一相加操作; 通过使用预定的加密算法，基于第一加法运算的输出和第二目标内部密钥生成目标加密密钥; 以及使用所述目标加密密钥解密所述加密的数字内容。

公开(公告)号：US20090276628A1

公开(公告)日：2009-11-05

申请号：US12506202

申请日：2009-07-20

Applicant: Young-Soon CHO ,  Myeong-Joon KANG ,  Jae-Young KIM ,  Han JUNG

Inventor： Young-Soon CHO ,  Myeong-Joon KANG ,  Jae-Young KIM ,  Han JUNG

IPC: H04L9/32 ,  H04L9/00 ,  H04L9/28

CPC classification number: G11B20/10 ,  G11B20/00086 ,  G11B20/00115 ,  G11B20/00144 ,  G11B20/00152 ,  G11B20/00195 ,  G11B20/0021 ,  G11B20/00246 ,  G11B20/00347 ,  G11B20/00855 ,  G11B2020/00057 ,  H04L9/0866

Abstract: A device and method for decrypting digital contents are discussed. According to an embodiment, a method for decrypting digital content at a target device, includes receiving the digital content without a source encryption key from a source device connected to the target device, the digital content having been encrypted with the source encryption key in the source device, wherein the source device is configured to perform an authenticating operation with the target device by using an identifier (ID) associated with at least one of the target device and a storage medium of the target device; performing a first addition operation by using a first target internal key and the ID; generating a target encryption key based on an output of the first addition operation and a second target internal key by using a predetermined encryption algorithm; and decrypting the encrypted digital content using the target encryption key.

Abstract translation: 讨论了一种用于解密数字内容的设备和方法。 根据一个实施例，一种用于在目标设备处解密数字内容的方法包括从连接到目标设备的源设备接收没有源加密密钥的数字内容，数字内容已经用源中的源加密密钥加密 设备，其中所述源设备被配置为通过使用与所述目标设备的目标设备和存储介质中的至少一个相关联的标识符（ID）来执行与所述目标设备的认证操作; 通过使用第一目标内部密钥和ID来执行第一相加操作; 通过使用预定的加密算法，基于第一加法运算的输出和第二目标内部密钥生成目标加密密钥; 以及使用所述目标加密密钥解密所述加密的数字内容。

公开(公告)号：US20090262935A1

公开(公告)日：2009-10-22

申请号：US12498315

申请日：2009-07-06

Applicant: Young-Soon CHO ,  Myeong-Joon Kang ,  Jae-Young Kim ,  Han Jung

Inventor： Young-Soon CHO ,  Myeong-Joon Kang ,  Jae-Young Kim ,  Han Jung

IPC: H04L9/28 ,  H04K1/00 ,  H04L9/00

CPC classification number: G11B20/10 ,  G11B20/00086 ,  G11B20/00115 ,  G11B20/00144 ,  G11B20/00152 ,  G11B20/00195 ,  G11B20/0021 ,  G11B20/00246 ,  G11B20/00347 ,  G11B20/00855 ,  G11B2020/00057 ,  H04L9/0866

Abstract: The invention is directed to a source device and a method for encrypting digital contents at the source device. According to an embodiment, the method includes performing a first addition operation by using a first source internal key and an identifier (ID), the first source internal key being associated with the source device, the ID being associated with at least one of a target device and a storage medium of the target device, and the target device being connected to the source device; generating a source encryption key based on an output of the first addition operation and a second source internal key by using a predetermined encryption algorithm, wherein the second source internal key is associated with the source device; encrypting the digital content using the source encryption key; and transmitting the encrypted digital content without the source encryption key to the target device.

Abstract translation: 本发明涉及一种在源设备上加密数字内容的源设备和方法。 根据实施例，该方法包括通过使用第一源内部密钥和标识符（ID）来执行第一加法运算，第一源内部密钥与源设备相关联，该ID与目标中的至少一个相关联 设备和目标设备的存储介质，目标设备连接到源设备; 通过使用预定的加密算法，基于第一加法运算的输出和第二源内部密钥生成源加密密钥，其中第二源内部密钥与源设备相关联; 使用源加密密钥加密数字内容; 以及将没有源加密密钥的加密数字内容发送到目标设备。

公开(公告)号：US20060174321A1

公开(公告)日：2006-08-03

申请号：US11373248

申请日：2006-03-13

Applicant: Young-Soon Cho ,  Jae-Young Kim ,  Han Jung

Inventor： Young-Soon Cho ,  Jae-Young Kim ,  Han Jung

IPC: H04L9/32

CPC classification number: H04L63/083

Abstract: The digital data file management method reads a header of the digital data file stored on an external medium. Based on the read header, the digital data file is selectively uploaded and/or managed.

公开(公告)号：US07039944B1

公开(公告)日：2006-05-02

申请号：US09500573

申请日：2000-02-10

Applicant: Young-Soon Cho ,  Jae-Young Kim ,  Han Jung

Inventor： Young-Soon Cho ,  Jae-Young Kim ,  Han Jung

IPC: H04L9/00

CPC classification number: H04L63/083

Abstract: The digital data file management method reads a header of the digital data file stored on an external medium. Based on the read header, the digital data file is selectively uploaded and/or managed.

Abstract translation: 数字数据文件管理方法读取存储在外部介质上的数字数据文件的标题。 基于读取标题，数字数据文件被选择性地上传和/或管理。

公开(公告)号：US07769174B2

公开(公告)日：2010-08-03

申请号：US11979690

申请日：2007-11-07

Applicant: Young-Soon Cho ,  Myeong-Joon Kang ,  Jae-Young Kim ,  Han Jung

Inventor： Young-Soon Cho ,  Myeong-Joon Kang ,  Jae-Young Kim ,  Han Jung

IPC: H04L9/12

CPC classification number: G11B20/10 ,  G11B20/00086 ,  G11B20/00115 ,  G11B20/00144 ,  G11B20/00152 ,  G11B20/00195 ,  G11B20/0021 ,  G11B20/00246 ,  G11B20/00347 ,  G11B20/00855 ,  G11B2020/00057 ,  H04L9/0866

Abstract: The invention is directed to a digital data delivery system including a digital data server configured to deliver first key encrypted digital data to a source device, and the first key encrypted digital data is encrypted using a first key. The source device is configured to generate decrypted digital data by decrypting the first key encrypted digital data using the first key, generate second key encrypted digital data by encrypting the decrypted digital data using a second key, and deliver the second key encrypted digital data to a digital data playing device. The first key is thereby based on one or more registration attributes of a user of the digital data server, and the second key is based on one or more attributes of the digital data playing device.

Abstract translation: 本发明涉及一种数字数据传送系统，其包括数字数据服务器，该数字数据服务器被配置为将第一密钥加密的数字数据传送到源设备，并且第一密钥加密的数字数据使用第一密钥进行加密。 源装置被配置为通过使用第一密钥解密第一密钥加密数字数据来生成解密的数字数据，通过使用第二密钥加密解密的数字数据来生成第二密钥加密的数字数据，并将第二密钥加密的数字数据传送到 数字数据播放设备。 因此，第一密钥基于数字数据服务器的用户的一个或多个注册属性，并且第二密钥基于数字数据播放设备的一个或多个属性。

公开(公告)号：US07643635B2

公开(公告)日：2010-01-05

申请号：US12506205

申请日：2009-07-20

Applicant: Young-Soon Cho ,  Myeong-Joon Kang ,  Jae-Young Kim ,  Han Jung

Inventor： Young-Soon Cho ,  Myeong-Joon Kang ,  Jae-Young Kim ,  Han Jung

IPC: H04L9/12

CPC classification number: G11B20/10 ,  G11B20/00086 ,  G11B20/00115 ,  G11B20/00144 ,  G11B20/00152 ,  G11B20/00195 ,  G11B20/0021 ,  G11B20/00246 ,  G11B20/00347 ,  G11B20/00855 ,  G11B2020/00057 ,  H04L9/0866

Abstract: A device and method for decrypting re-encrypted digital contents are discussed. According to an embodiment, the method includes receiving the re-encrypted digital content without a source encryption key from a source device connected to the target device, wherein the re-encrypted digital content is generated at the source device by: 1) decrypting an encrypted digital content which is previously encrypted in an external device, and 2) re-encrypting the decrypted digital content with the source encryption key; performing an addition operation by using a first target internal key and an identifier (ID); generating a target encryption key based on an output of the addition operation and a second target internal key by using a predetermined encryption algorithm, the second target internal key being associated with the target device; and decrypting the re-encrypted digital content using the target encryption key.

Abstract translation: 讨论了用于解密重新加密的数字内容的设备和方法。 根据一个实施例，该方法包括从连接到目标设备的源设备接收没有源加密密钥的重新加密的数字内容，其中通过以下步骤在源设备上生成重新加密的数字内容：1）解密加密的 先前在外部设备中加密的数字内容，以及2）用所述源加密密钥重新加密所述解密的数字内容; 通过使用第一目标内部密钥和标识符（ID）来执行添加操作; 通过使用预定的加密算法，基于所述相加操作的输出和第二目标内部密钥生成目标加密密钥，所述第二目标内部密钥与所述目标设备相关联; 以及使用所述目标加密密钥解密所述重新加密的数字内容。

公开(公告)号：US07639812B2

公开(公告)日：2009-12-29

申请号：US12498316

申请日：2009-07-06

Applicant: Young-Soon Cho ,  Myeong-Joon Kang ,  Jae-Young Kim ,  Han Jung

Inventor： Young-Soon Cho ,  Myeong-Joon Kang ,  Jae-Young Kim ,  Han Jung

IPC: H04L9/12

CPC classification number: G11B20/10 ,  G11B20/00086 ,  G11B20/00115 ,  G11B20/00144 ,  G11B20/00152 ,  G11B20/00195 ,  G11B20/0021 ,  G11B20/00246 ,  G11B20/00347 ,  G11B20/00855 ,  G11B2020/00057 ,  H04L9/0866

Abstract: The invention is directed to a source device and a method for encrypting digital contents at the source device. According to an embodiment, the method includes receiving digital content from an external device, the digital content being encrypted using a first encryption algorithm in the external device; decrypting the received digital content; performing an addition operation by using a first source internal key and an identifier (ID), the ID being associated with at least one of a target device and a storage medium of the target device; generating a source encryption key based on an output of the addition operation and a second source internal key by using a second encryption algorithm; re-encrypting the decrypted digital content using the source encryption key; and transmitting the re-encrypted digital content without the source encryption key to the target device.

Abstract translation: 本发明涉及一种在源设备上加密数字内容的源设备和方法。 根据实施例，所述方法包括从外部设备接收数字内容，所述数字内容使用所述外部设备中的第一加密算法进行加密; 解密所接收的数字内容; 通过使用第一源内部密钥和标识符（ID）执行添加操作，所述ID与目标设备的目标设备和存储介质中的至少一个相关联; 通过使用第二加密算法，基于加法运算的输出和第二源内部密钥生成源加密密钥; 使用源加密密钥重新加密解密的数字内容; 以及将没有源加密密钥的重新加密的数字内容发送到目标设备。

公开(公告)号：US20090274296A1

公开(公告)日：2009-11-05

申请号：US12506198

申请日：2009-07-20

Applicant: Young-Soon CHO ,  Myeong-Joon KANG ,  Jae-Young KIM ,  Han JUNG

Inventor： Young-Soon CHO ,  Myeong-Joon KANG ,  Jae-Young KIM ,  Han JUNG

IPC: H04L9/00

CPC classification number: G11B20/10 ,  G11B20/00086 ,  G11B20/00115 ,  G11B20/00144 ,  G11B20/00152 ,  G11B20/00195 ,  G11B20/0021 ,  G11B20/00246 ,  G11B20/00347 ,  G11B20/00855 ,  G11B2020/00057 ,  H04L9/0866

Abstract: A device and method for decrypting digital contents are discussed. According to an embodiment, a method for decrypting digital content at a target device, includes receiving the digital content without a source encryption key from a source device connected to the target device, the digital content having been encrypted with the source encryption key in the source device; performing an addition operation by using a first target internal key and an identifier (ID), the first target internal key being associated with the target device, and the ID being associated with at least one of the target device and a storage medium of the target device; generating a target encryption key based on an output of the addition operation and a second target internal key by using a predetermined encryption algorithm, the second target internal key being associated with the target device; and decrypting the encrypted digital content using the target encryption key.

Abstract translation: 讨论了一种用于解密数字内容的设备和方法。 根据一个实施例，一种用于在目标设备处解密数字内容的方法包括从连接到目标设备的源设备接收没有源加密密钥的数字内容，数字内容已经用源中的源加密密钥加密 设备; 通过使用第一目标内部密钥和标识符（ID）来执行添加操作，所述第一目标内部密钥与所述目标设备相关联，并且所述ID与所述目标设备和所述目标的存储介质中的至少一个相关联 设备; 通过使用预定的加密算法，基于所述相加操作的输出和第二目标内部密钥生成目标加密密钥，所述第二目标内部密钥与所述目标设备相关联; 以及使用所述目标加密密钥解密所述加密的数字内容。