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    APPARATUS AND METHOD FOR GIVING THE COMPRESSED ENCRYPTION FUNCTIONALITY TO INTEGER-BASED HOMOMORPHIC ENCRYPTION SCHEMES
    3.
    发明申请
    APPARATUS AND METHOD FOR GIVING THE COMPRESSED ENCRYPTION FUNCTIONALITY TO INTEGER-BASED HOMOMORPHIC ENCRYPTION SCHEMES 有权
    将压缩加密功能提供给基于整数的均质加密方案的装置和方法

    公开(公告)号：US20150180659A1

    公开(公告)日：2015-06-25

    申请号：US14312049

    申请日：2014-06-23

    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

    Inventor： Taek-Young YOUN ,  Nam-Su JHO ,  Ku-Young CHANG

    IPC: H04L9/08 ,  H04L9/30 ,  H04L9/14

    CPC classification number: H04L9/0861 ,  H04L9/008 ,  H04L9/14 ,  H04L9/3066 ,  H04L2209/30

    Abstract: The present invention relates to a compressed encryption and decryption apparatus comprising: an interface receiving a public key, a secret key and a compression ratio; a memory storing instructions for encryption and decryption of plaintexts; and a processor encrypting and decrypting plaintexts according to the instruction, wherein the instruction comprises instructions performing; generating an extended public key and an extended secret key by revising the public key and the secret key according to the compression ratio; outputting the extended public key; receiving compressed ciphertext; and decrypting the compressed ciphertext using modulo operation for multiplication of the extended secret key and the compressed ciphertext.

    Abstract translation: 本发明涉及一种压缩加密和解密装置，包括：接收公钥，秘密密钥和压缩比的接口; 存储用于明文加密和解密的指令的存储器; 以及处理器，根据所述指令对明文进行加密和解密，其中所述指令包括指令执行; 通过根据压缩率修改公钥和秘密密钥来生成扩展公钥和扩展密钥; 输出扩展公钥; 接收压缩密文; 以及使用用于乘法扩展密钥和压缩密文的模运算解密压缩密文。

    APPARATUS FOR GENERATING PRIVACY-PROTECTING DOCUMENT AUTHENTICATION INFORMATION AND METHOD OF PERFORMING PRIVACY-PROTECTING DOCUMENT AUTHENTICATION USING THE SAME
    4.
    发明申请
    APPARATUS FOR GENERATING PRIVACY-PROTECTING DOCUMENT AUTHENTICATION INFORMATION AND METHOD OF PERFORMING PRIVACY-PROTECTING DOCUMENT AUTHENTICATION USING THE SAME 审中-公开
    用于生成隐私保护文件认证信息的装置和使用该保护文件进行隐私保护文件认证的方法

    公开(公告)号：US20140245019A1

    公开(公告)日：2014-08-28

    申请号：US14142165

    申请日：2013-12-27

    Applicant: Electronics and Telecommunications Research Institute

    Inventor： Jung-Yeon HWANG ,  Ku-Young CHANG ,  Nam-Su JHO ,  Taek-Young YOUN ,  Hyun-Sook CHO

    IPC: G06F21/64

    CPC classification number: G06F21/64

    Abstract: Disclosed herein are an apparatus for generating the privacy-protecting document authentication information and a method of performing privacy-protecting document authentication. The apparatus for generating the privacy-protecting document authentication information includes an electronic signature information generation unit, a multi-dimensional code generation unit, and a multi-dimensional code output unit. The electronic signature information generation unit generates electronic signature information for the content of an input document. The multi-dimensional code generation unit generates a multi-dimensional code corresponding to the generated electronic signature information. The multi-dimensional code output unit outputs the generated multi-dimensional code onto the document.

    Abstract translation: 本文公开了一种用于生成隐私保护文档认证信息的装置和执行隐私保护文档认证的方法。 用于生成隐私保护文档认证信息的装置包括电子签名信息生成单元，多维码生成单元和多维码输出单元。 电子签名信息生成单元生成用于输入文档的内容的电子签名信息。 多维码生成部生成与生成的电子签名信息对应的多维码。 多维码输出单元将生成的多维码输出到文档上。

    MULTI-USER SEARCHABLE ENCRYPTION SYSTEM AND METHOD WITH INDEX VALIDATION AND TRACING
    5.
    发明申请
    MULTI-USER SEARCHABLE ENCRYPTION SYSTEM AND METHOD WITH INDEX VALIDATION AND TRACING 有权
    多用户可搜索的加密系统和索引验证和跟踪方法

    公开(公告)号：US20130148803A1

    公开(公告)日：2013-06-13

    申请号：US13705666

    申请日：2012-12-05

    Applicant: Electronics and Telecommunications Research Institute

    Inventor： Nam-Su JHO ,  Ku Young CHANG ,  Do Won HONG

    IPC: H04L9/08

    CPC classification number: H04L9/0861 ,  H04L9/3073

    Abstract: A multi-user searchable encryption system includes a key generation center to issue a private secret key to a user and trace information regarding a user who has generated an index, and a user terminal device to generate an index for searching for a database using the private secret key. The multi-user searchable encryption system includes a database (DB) server that verifies the index generated by the user terminal device and searches for corresponding data to the verified index.

    Abstract translation: 多用户可搜索的加密系统包括密钥生成中心，用于向用户发出专用秘密密钥并跟踪关于已经生成索引的用户的信息;以及用户终端设备，用于生成用于使用私有的搜索数据库的索引 密钥。 多用户可搜索的加密系统包括数据库（DB）服务器，用于验证由用户终端设备生成的索引并搜索与已验证索引相对应的数据。

    KEY GENERATION APPARATUS AND METHOD BASED ON MACHINE LEARNING
    7.
    发明申请
    KEY GENERATION APPARATUS AND METHOD BASED ON MACHINE LEARNING 有权

    公开(公告)号：US20220294620A1

    公开(公告)日：2022-09-15

    申请号：US17518905

    申请日：2021-11-04

    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

    Inventor： Nam-Su JHO ,  Ju-Young KIM ,  Ku-Young CHANG

    IPC: H04L9/08 ,  H04L9/06 ,  G06K9/62 ,  G06N3/04

    Abstract: Disclosed herein are a key generation apparatus and method based on machine learning. The key generation method includes generating, by first and second key generation apparatuses, first and second commit values, and uploading the first commit value and the second commit value to an external repository, training, by the first and second key generation apparatuses, a neural network so as to match weight values with each other, sharing, by the first and second key generation apparatuses, the first and second commit values with each other, comparing shared first and second commit values with uploaded commit values, and then verifying the commit values, and when verification of the commit values has succeeded, generating, by the first and second key generation apparatuses, hash values using the matched weight value, verifying whether the hash values are identical to each other, and generating a session secret key based on a result of verification.

    ORDER-PRESERVING ENCRYPTION METHOD AND APPARATUS
    10.
    发明公开
    ORDER-PRESERVING ENCRYPTION METHOD AND APPARATUS 审中-公开

    公开(公告)号：US20240220648A1

    公开(公告)日：2024-07-04

    申请号：US18462214

    申请日：2023-09-06

    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

    Inventor： Young-Kyung LEE ,  Ju-Young KIM ,  Sung-Jin YU ,  Nam-Su JHO

    IPC: G06F21/62 ,  G06F21/60

    CPC classification number: G06F21/6227 ,  G06F21/602

    Abstract: Disclosed herein are an order-preserving encryption method and apparatus. The order-preserving encryption method may include when plaintext data is received from a client, storing a ciphertext database (DB), generated by encrypting the plaintext data, and a search index in a server, when a request for a range search query is received from the client, converting the range search query into a search index query statement, querying the server including search indices for the search index query statement, and querying the ciphertext DB of the server for an index ciphertext received in response to the query, and decrypting a ciphertext received as a response from the ciphertext DB and then transferring a plaintext-type response to the query statement to the client.

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