Patents by Inventor Weon-il Jin

Weon-il Jin has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 9571213
    Abstract: A tag generation method for generating tags used in data packets in a broadcast encryption system is provided. The method includes detecting at least one revoked leaf node; setting a node identification (node ID) assigned to at least one node among nodes assigned node IDs at a layer 0 and to which the at least one revoked leaf node is subordinate, to a node path identification (NPID) of the at least one revoked leaf node at the layer 0; generating a tag list in the layer 0 by combining the NPID of each of the at least one revoked leaf nodes at the layer 0 in order of increment of node IDs of the corresponding at least one revoked leaf nodes; and generating a tag list in a lowest layer by repeatedly performing the setting and generation operation down to the lowest layer.
    Type: Grant
    Filed: June 29, 2012
    Date of Patent: February 14, 2017
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Weon-il Jin, Maeng-hee Sung, Dae-youb Kim, Hwan-joon Kim
  • Patent number: 9064214
    Abstract: A context aware apparatus is provided. The context aware apparatus includes an extracting unit configured to extract a terminological-box (T-box) from a semantic model, a first generating unit configured to generate a reasoning rule based on the extracted T-box, a second generating unit configured to generate a first assertion-box (A-box) based on sensing information, and a reasoning unit configured to infer a user context based on the reasoning rule and the first A-box.
    Type: Grant
    Filed: January 13, 2012
    Date of Patent: June 23, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Su-Myeon Kim, Weon-Il Jin, Won-Keun Kong
  • Patent number: 9053128
    Abstract: An assertion management method includes collecting a SameAs assertion from a plurality of assertions; searching the plurality of assertions for any assertion having a first individual of the SameAs assertion as an instance; and creating a new assertion having a second individual of the SameAs assertion as an instance from each found assertion.
    Type: Grant
    Filed: May 31, 2012
    Date of Patent: June 9, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Weon-Il Jin
  • Patent number: 8966511
    Abstract: A computer system and method for preventing a Dynamic-Link Library (DLL) injection attack are provided. The computer system monitors an operation where a process attempts to dynamically link an executable code library to another process, and intercepts the dynamic link of the executable code library.
    Type: Grant
    Filed: September 20, 2010
    Date of Patent: February 24, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Eun Ah Kim, Weon Il Jin, Hwan Joon Kim
  • Patent number: 8897445
    Abstract: A combination-based broadcast encryption method includes: assigning by a server a base group of different combinations to each user; producing and sending secret information for each user by using as a base the base group allocated to each user; producing and sending an inverse-base parameter value through calculations with integers used to produce the base group and key value information of one or more privileged users; and deriving a group key by using the key value information of the privileged users, encrypting a session key by using the derived group key, and sending the encrypted session key to each user. Accordingly, each user is assigned a different base through a combination, thereby having security against collusion attacks.
    Type: Grant
    Filed: April 30, 2012
    Date of Patent: November 25, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Weon-il Jin, Dae-youb Kim, Hwan-joon Kim, Sung-joon Park
  • Patent number: 8755520
    Abstract: An apparatus and method for generating a key for a broadcast encryption. The apparatus includes a node secret generator for managing a user that receives broadcast data in a tree structure and for generating a unique node secret for each node in the tree structure. The apparatus also includes an instant key generator for temporarily generating an instant key used at all nodes in common in the tree structure, and a node key generator for generating a node key for each node by operating the node secret generated at the node secret generator and the instant key generated at the instant key generator. Thus, key update can be efficiently achieved.
    Type: Grant
    Filed: March 22, 2012
    Date of Patent: June 17, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hwan-joon Kim, Dae-youb Kim, Weon-il Jin, Sung-joon Park
  • Patent number: 8625784
    Abstract: A broadcast encryption method and a broadcast decryption method. The broadcast encryption method includes generating a message encryption key using a public key and a secret key generated by using a Strong Diffie-Hellman tuple; encrypting a message by the message encryption key; and generating a message header using a sum of a plurality of Strong Diffie-Hellman tuples corresponding to an authorized user group. Accordingly, a transmission amount and a storage amount can be reduced when a broadcast encryption message is transmitted.
    Type: Grant
    Filed: October 12, 2007
    Date of Patent: January 7, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Maeng Hee Sung, Weon Il Jin, Heejean Kim, Baeeun Jung, Tae-Chul Jung, Jong Hwan Park, Dong Hoon Lee, Jong In Lim, Kyu Young Ohoi, Jung Yeon Hwang
  • Patent number: 8615806
    Abstract: A code injection attack detecting apparatus and method are provided. The code injection attack may be detected based on characteristics occurring when a malicious code injected by the code injection attack is executed. For example, the code injection attack detecting apparatus and method may detect that a code injection attack occurs when a buffer miss is detected, a page corresponding to an address is updated, a mode of the page corresponding to the address is in user mode, and/or the page corresponding to the page is inserted by an external input.
    Type: Grant
    Filed: September 20, 2010
    Date of Patent: December 24, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Weon Il Jin, Hwan Joon Kim, Eun Ah Kim, Gyungho Lee
  • Patent number: 8605898
    Abstract: Provided is an apparatus and method that may generate and verify an originality verification (OV). An OV generating apparatus may generate primary information that is based on generator information and a pseudorandom number, may generate at least one secondary information based on the pseudorandom number, may obtain parameters used when the pseudorandom number is generated, may generate the OV including the primary information, the at least one secondary information, and the parameters, and may distribute the OV to an OV request device. When the OV distributed from the OV request device is received, the OV generating apparatus may regenerate the pseudorandom number based on the parameters included in an OV request message, and may verify the OV included in the verification request message as the OV that is generated by the OV generating apparatus.
    Type: Grant
    Filed: June 2, 2011
    Date of Patent: December 10, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Weon Il Jin
  • Patent number: 8595496
    Abstract: A method and system for updating time information of a digital rights management (DRM) includes a time server transmitting a time information message to a consumer electronics (CE) device, the CE device transmitting the time information message to a digital rights management DRM device when the CE device receives the time information message from the time server, and the DRM device updating a present time of the DRM device based on the time information message when the DRM device successfully performs authentication with respect to the time information message which has been transmitted from the CE device.
    Type: Grant
    Filed: September 12, 2007
    Date of Patent: November 26, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hee Jean Kim, Maeng Hee Sung, Weon Il Jin, Bae Eun Jung, Tae-Chul Jung
  • Patent number: 8578154
    Abstract: A tag generation method for generating tags used in data packets in a broadcast encryption system is provided. The method includes detecting at least one revoked leaf node; setting a node identification (node ID) assigned to at least one node among nodes assigned node IDs at a layer 0 and to which the at least one revoked leaf node is subordinate, to a node path identification (NPID) of the at least one revoked leaf node at the layer 0; generating a tag list in the layer 0 by combining the NPID of each of the at least one revoked leaf nodes at the layer 0 in order of increment of node IDs of the corresponding at least one revoked leaf nodes; and generating a tag list in a lowest layer by repeatedly performing the setting and generation operation down to the lowest layer.
    Type: Grant
    Filed: October 20, 2011
    Date of Patent: November 5, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Weon-il Jin, Maeng-hee Sung, Dae-youb Kim, Hwan-joon Kim
  • Patent number: 8566958
    Abstract: A method for authorizing an off-line image device to play contents in use of a recording medium, including recording an encrypted key on a recording medium; recording contents on the recording medium using the encrypted key; and recording information as to a play right to play the contents recorded on the recording medium. Thus, the off-line image device can be authorized to play contents in use of the recording medium. As a result, the off-line image device can play contents that are recorded on the recording medium and must be authorized to play the contents.
    Type: Grant
    Filed: April 20, 2006
    Date of Patent: October 22, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hwan-joon Kim, Dae-youb Kim, Maeng-hee Sung, Weon-il Jin
  • Patent number: 8515074
    Abstract: A user key allocation method for broadcast encryption is provided. The user key allocation method includes generating a plurality of subsets by dividing one group including a plurality of nodes to sub-groups and allocating key sets with respect to the subsets, respectively. The nodes included in the subset may be odd nodes and even nodes of the nodes of the group. The nodes are arranged so that privileged nodes are consecutive or there is only one privileged node. Accordingly, it is possible to reduce the data size transmitted from the server to the nodes by constituting one or more subsets from the nodes consecutively arranged and providing key sets with respect to the subsets.
    Type: Grant
    Filed: January 3, 2007
    Date of Patent: August 20, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Bae-eun Jung, Maeng-hee Sung, Weon-il Jin, Hee-jean Kim
  • Patent number: 8516557
    Abstract: A user terminal apparatus with a security function and a security-control method are provided, which may prevent unauthorized use of the user terminal apparatus without requiring a user to lock up the user terminal apparatus. The user terminal apparatus includes an input sensing unit which senses a user's input to the user terminal apparatus, an information collecting unit which collects information regarding an input state, which is determined based on the user's input, and a transition of the determined state, and a security-control unit which determines whether the user is valid based on the collected information and controls a security function.
    Type: Grant
    Filed: May 9, 2008
    Date of Patent: August 20, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Weon-il Jin
  • Patent number: 8509433
    Abstract: A method and an apparatus are provided for generating an encryption key for broadcast encryption. The method of generating the encryption key for the broadcast encryption includes generating a first encryption key with respect to all nodes, configured in a plurality of depths, from a root node to a plurality of leaf nodes, and generating a second encryption key with respect to each intermediate node between the root node and the plurality of leaf nodes, wherein the generation of the second encryption key comprises generating any one of first and second keys using the first encryption key depending on whether a first child node, connected to a sibling node of the intermediate node, is on a left path or a right path of the intermediate node.
    Type: Grant
    Filed: March 26, 2007
    Date of Patent: August 13, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Bae Eun Jung, Maeng Hee Sung, Weon Il Jin, Hee Jean Kim
  • Publication number: 20130138701
    Abstract: An assertion management method includes collecting a SameAs assertion from a plurality of assertions; searching the plurality of assertions for any assertion having a first individual of the SameAs assertion as an instance; and creating a new assertion having a second individual of the SameAs assertion as an instance from each found assertion.
    Type: Application
    Filed: May 31, 2012
    Publication date: May 30, 2013
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Weon-Il Jin
  • Publication number: 20130138600
    Abstract: A method of managing an axiom includes determining if an H in an A?H axiom in existing axioms is a predetermined expression; and if the H is the predetermined expression, collecting, from the existing axioms, a B?I axiom in which the B includes the H, deleting the A?H axiom from the existing axioms, and generating a new B?I axiom from the collected B?I axiom by replacing the H in the B with the A.
    Type: Application
    Filed: June 5, 2012
    Publication date: May 30, 2013
    Inventor: Weon-Il JIN
  • Patent number: 8429414
    Abstract: A method of generating prevention and control data to verify validity of data to be transmitted, and an apparatus to perform the method, the method including generating the prevention and control data according to composing information of the data to be transmitted, and transmitting the prevention and control data along with the data to be transmitted to verify the validity of the data to be transmitted.
    Type: Grant
    Filed: October 28, 2005
    Date of Patent: April 23, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Dae-youb Kim, Weon-il Jin, Sung-ioon Park, Hwan-ioon Kim
  • Patent number: RE45191
    Abstract: A user key management method for a broadcast encryption includes assigning node path identifiers (IDs) to nodes arranged in sequence; assigning random seed value keys to the nodes according to the node path IDs; generating key values by repeatedly applying a hash function to the assigned random seed value keys; and assigning the generated key values to the nodes in sequence. Accordingly, it is possible to reduce the transmission overhead that is most important matter in the broadcast encryption to less than the number of the revoked users. Further, there is an advantage that the transmission overhead of the exemplary embodiments of the present invention is remarkably reduced compared with the Subset Difference method.
    Type: Grant
    Filed: April 18, 2013
    Date of Patent: October 14, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Weon-il Jin, Dae-youb Kim, Hwan-joon Kim, Sung-joon Park, Jung-hee Cheon, Myung-hwan Kim, Nam-su Jho, Eun-sun Yoo
  • Patent number: RE45213
    Abstract: A user key management method for a broadcast encryption includes assigning node path identifiers (IDs) to nodes arranged in sequence; assigning random seed value keys to the nodes according to the node path IDs; generating key values by repeatedly applying a hash function to the assigned random seed value keys; and assigning the generated key values to the nodes in sequence. Accordingly, it is possible to reduce the transmission overhead that is most important matter in the broadcast encryption to less than the number of the revoked users. Further, there is an advantage that the transmission overhead of the exemplary embodiments of the present invention is remarkably reduced compared with the Subset Difference method.
    Type: Grant
    Filed: April 22, 2013
    Date of Patent: October 28, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Weon-il Jin, Dae-youb Kim, Hwan-joon Kim, Sung-joon Park, Jung-hee Cheon, Myung-hwan Kim, Nam-su Jho, Eun-sun Yoo