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公开(公告)号：US11914564B1
公开(公告)日：2024-02-27
申请号：US18059897
申请日：2022-11-29
申请人： Penta Security Inc.
发明人： Jin Hyeok Oh , Keon Yun , Sun Woo Yun , Sang Min Lee , Jun Yong Lee , Sang Gyoo Sim , Tae Gyun Kim
IPC分类号： G06F16/22
CPC分类号： G06F16/2246
摘要： A Merkle tree-based data management method may comprise: aligning data into two-dimensional square matrix; calculating a hash value of each node of the two-dimensional square matrix; calculating hash values of each row of the two-dimensional square matrix; generating an additional column with nodes having the hash values of each row; calculating hash values of each column of the two-dimensional square matrix; generating an additional row with nodes having hash values of each column; and calculating a Merkle root by concatenating the hash values of the additional column and the hash values of the additional row.
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公开(公告)号：US12058593B2
公开(公告)日：2024-08-06
申请号：US17537032
申请日：2021-11-29
发明人： Keon Yun , Myung Woo Chung , Sang Gyoo Sim , Duk Soo Kim , Seok Woo Lee
CPC分类号： H04W4/46 , G08G1/091 , G01C21/3691
摘要： Provided are a driving negotiation method and apparatus for supporting stability against a blind spot, an unexpected situation, etc. and a rapid judgment and response of an autonomous vehicle in various driving environments. The driving negotiation apparatus includes a wireless communication module configured to support vehicle to everything (V2X) communication and at least one processor connected to the wireless communication module. The at least one processor receives a cooperative request message from a first vehicle, broadcasts a cooperative request message and additional information required for a negotiation to surrounding vehicles, receives a cooperative response message from at least one second vehicle among the surrounding vehicles, and transmits a message indicating that the negotiation is possible or impossible to the first vehicle on the basis of the cooperative response message.
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公开(公告)号：US11936773B2
公开(公告)日：2024-03-19
申请号：US17529601
申请日：2021-11-18
申请人： Penta Security Inc.
发明人： Jin Hyeok Oh , Sang Jun Lee , Myong Cheol Lim , Sang Gyoo Sim , Duk Soo Kim , Seok Woo Lee
CPC分类号： H04L9/0825 , H04L9/0643 , H04L9/0822 , H04L9/085
摘要： An encryption key management method includes: receiving a data registration request from a supplier terminal, determining a data identifier associated with the content data, encrypting a master key with a public key of the supplier terminal, and providing the supplier terminal with the master key encrypted with the public key of the supplier terminal, the data identifier, and a key update count value; receiving a subscription application related to the data identifier from a first subscriber terminal, encrypting the master key with a public key of the first subscriber terminal, and providing the first subscriber terminal with the master key encrypted with the public key of the first subscriber terminal and the key update count value; receiving encrypted content data encrypted with the symmetric key and a hash for the content data from the supplier terminal; and transmitting the encrypted content data and the hash to the first subscriber terminal.
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