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公开(公告)号：US07769174B2
公开(公告)日：2010-08-03
申请号：US11979690
申请日：2007-11-07
申请人： Young-Soon Cho , Myeong-Joon Kang , Jae-Young Kim , Han Jung
发明人： Young-Soon Cho , Myeong-Joon Kang , Jae-Young Kim , Han Jung
IPC分类号： H04L9/12
CPC分类号： G11B20/10 , G11B20/00086 , G11B20/00115 , G11B20/00144 , G11B20/00152 , G11B20/00195 , G11B20/0021 , G11B20/00246 , G11B20/00347 , G11B20/00855 , G11B2020/00057 , H04L9/0866
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US07643635B2
公开(公告)日：2010-01-05
申请号：US12506205
申请日：2009-07-20
申请人： Young-Soon Cho , Myeong-Joon Kang , Jae-Young Kim , Han Jung
发明人： Young-Soon Cho , Myeong-Joon Kang , Jae-Young Kim , Han Jung
IPC分类号： H04L9/12
CPC分类号： G11B20/10 , G11B20/00086 , G11B20/00115 , G11B20/00144 , G11B20/00152 , G11B20/00195 , G11B20/0021 , G11B20/00246 , G11B20/00347 , G11B20/00855 , G11B2020/00057 , H04L9/0866
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US07639812B2
公开(公告)日：2009-12-29
申请号：US12498316
申请日：2009-07-06
申请人： Young-Soon Cho , Myeong-Joon Kang , Jae-Young Kim , Han Jung
发明人： Young-Soon Cho , Myeong-Joon Kang , Jae-Young Kim , Han Jung
IPC分类号： H04L9/12
CPC分类号： G11B20/10 , G11B20/00086 , G11B20/00115 , G11B20/00144 , G11B20/00152 , G11B20/00195 , G11B20/0021 , G11B20/00246 , G11B20/00347 , G11B20/00855 , G11B2020/00057 , H04L9/0866
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US20090274296A1
公开(公告)日：2009-11-05
申请号：US12506198
申请日：2009-07-20
申请人： Young-Soon CHO , Myeong-Joon KANG , Jae-Young KIM , Han JUNG
发明人： Young-Soon CHO , Myeong-Joon KANG , Jae-Young KIM , Han JUNG
IPC分类号： H04L9/00
CPC分类号： G11B20/10 , G11B20/00086 , G11B20/00115 , G11B20/00144 , G11B20/00152 , G11B20/00195 , G11B20/0021 , G11B20/00246 , G11B20/00347 , G11B20/00855 , G11B2020/00057 , H04L9/0866
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US07324974B1
公开(公告)日：2008-01-29
申请号：US09499633
申请日：2000-02-08
申请人： Young-Soon Cho , Myeong-Joon Kang , Jae-Young Kim , Han Jung
发明人： Young-Soon Cho , Myeong-Joon Kang , Jae-Young Kim , Han Jung
CPC分类号： G11B20/10 , G11B20/00086 , G11B20/00115 , G11B20/00144 , G11B20/00152 , G11B20/00195 , G11B20/0021 , G11B20/00246 , G11B20/00347 , G11B20/00855 , G11B2020/00057 , H04L9/0866
摘要： A digital data file encryption apparatus and method, where a digital data server identifies the user and supplies an encrypted digital data file to the user in accordance with the identified result. A personal computer decrypts the encrypted digital data file supplied from the digital data server and reproduces the decrypted digital data file or re-encrypts it using an encryption key. The encryption key is generated on the basis of an identification number of a data storage medium or digital data playing device. A digital data playing device stores the re-encrypted digital data file downloaded from the personal computer in the data storage medium and decrypts the stored digital data file using the encryption key to reproduce it. A first internal key is added to the identification number to convert the identification number into the encryption key, which is then encrypted according to an encryption algorithm based on a second internal key. The digital data file is the encrypted using the encrypted encryption key.
摘要翻译： 数字数据文件加密装置和方法，其中数字数据服务器识别用户并根据所识别的结果向用户提供加密的数字数据文件。 个人计算机解密从数字数据服务器提供的加密的数字数据文件，并再现解密的数字数据文件或使用加密密钥重新加密它。 基于数据存储介质或数字数据播放设备的标识号生成加密密钥。 数字数据播放装置将从个人计算机下载的重新加密的数字数据文件存储在数据存储介质中，并使用加密密钥对存储的数字数据文件进行解密以再现它。 将第一内部密钥添加到识别号码，以将识别号码转换为加密密钥，然后根据基于第二内部密钥的加密算法加密密钥。 使用加密的加密密钥对数字数据文件进行加密。
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公开(公告)号：USRE42171E1
公开(公告)日：2011-02-22
申请号：US12252300
申请日：2008-10-15
申请人： Ghun-Up Cha , Myeong-Joon Kang , Han Jung
发明人： Ghun-Up Cha , Myeong-Joon Kang , Han Jung
CPC分类号： H04L63/0464 , G11B20/00086 , G11B20/00144 , G11B20/00152 , G11B20/0021 , G11B20/00224 , G11B20/00478 , G11B20/00869 , G11B2020/1062 , G11B2020/10759 , H04L9/088 , H04L9/14 , H04L63/0478 , H04L2209/605
摘要： A digital data file encryption system and method where digital data encrypted to a high level and an encryption key are received and stored in a computer. The stored, encrypted digital data is decrypted on the basis of the encryption key and stored in a buffer of a predetermined size. Output digital data from the buffer is reencrypted to a low level of encryption and downloaded to a digital data playing device or a data storage medium. Therefore, a digital audio or video data file is prevented from being diverted in unencrypted form from a computer communication network when it is transmitted to a personal computer through the computer communication network and, in turn, downloaded to the digital data playing device. Further, the digital data playing device is prevented from rising in cost due to the use of simple encryption for data downloaded to the playing device.
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公开(公告)号：US20100262838A1
公开(公告)日：2010-10-14
申请号：US12823016
申请日：2010-06-24
申请人： Young-Soon CHO , Myeong-Joon Kang , Jae-Young Kim , Han Jung
发明人： Young-Soon CHO , Myeong-Joon Kang , Jae-Young Kim , Han Jung
IPC分类号： G06F21/22
CPC分类号： G11B20/10 , G11B20/00086 , G11B20/00115 , G11B20/00144 , G11B20/00152 , G11B20/00195 , G11B20/0021 , G11B20/00246 , G11B20/00347 , G11B20/00855 , G11B2020/00057 , H04L9/0866
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.
摘要翻译： 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。
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公开(公告)号：US07639815B2
公开(公告)日：2009-12-29
申请号：US12506202
申请日：2009-07-20
申请人： Young-Soon Cho , Myeong-Joon Kang , Jae-Young Kim , Han Jung
发明人： Young-Soon Cho , Myeong-Joon Kang , Jae-Young Kim , Han Jung
IPC分类号： H04L9/12
CPC分类号： G11B20/10 , G11B20/00086 , G11B20/00115 , G11B20/00144 , G11B20/00152 , G11B20/00195 , G11B20/0021 , G11B20/00246 , G11B20/00347 , G11B20/00855 , G11B2020/00057 , H04L9/0866
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US20090276628A1
公开(公告)日：2009-11-05
申请号：US12506202
申请日：2009-07-20
申请人： Young-Soon CHO , Myeong-Joon KANG , Jae-Young KIM , Han JUNG
发明人： Young-Soon CHO , Myeong-Joon KANG , Jae-Young KIM , Han JUNG
CPC分类号： G11B20/10 , G11B20/00086 , G11B20/00115 , G11B20/00144 , G11B20/00152 , G11B20/00195 , G11B20/0021 , G11B20/00246 , G11B20/00347 , G11B20/00855 , G11B2020/00057 , H04L9/0866
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US20090262935A1
公开(公告)日：2009-10-22
申请号：US12498315
申请日：2009-07-06
申请人： Young-Soon CHO , Myeong-Joon Kang , Jae-Young Kim , Han Jung
发明人： Young-Soon CHO , Myeong-Joon Kang , Jae-Young Kim , Han Jung
CPC分类号： G11B20/10 , G11B20/00086 , G11B20/00115 , G11B20/00144 , G11B20/00152 , G11B20/00195 , G11B20/0021 , G11B20/00246 , G11B20/00347 , G11B20/00855 , G11B2020/00057 , H04L9/0866
摘要： 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.
摘要翻译： 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。
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