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    APPARATUS AND METHOD FOR GIVING THE COMPRESSED ENCRYPTION FUNCTIONALITY TO INTEGER-BASED HOMOMORPHIC ENCRYPTION SCHEMES
    2.
    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
    3.
    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。

    METHOD AND APPARATUS FOR SECURING DATA
    6.
    发明申请
    METHOD AND APPARATUS FOR SECURING DATA 审中-公开

    公开(公告)号：US20190065776A1

    公开(公告)日：2019-02-28

    申请号：US16113530

    申请日：2018-08-27

    Applicant: Electronics and Telecommunications Research Institute

    Inventor： Nam-Su JHO ,  Taek-Young YOUN ,  Dae Sung MOON ,  Ik Kyun KIM ,  Seung Hun JIN

    IPC: G06F21/62

    Abstract: In the present invention, by providing an apparatus for securing data comprising a memory for storing information for data processing, a processor configured to partition original data into a plurality of partial data and generate a plurality of divided data by randomly determining positions of each of the plurality of partial data within the original data, and a communication interface configured to transmit each of the plurality of divided data to each of a plurality of servers, respectively, if an attacker obtains a portion of the divided data, it prevents the entire original data from being restored, and the legitimate user can restore the original data accurately even if some divided data is corrupted, and provides an efficient data polymorphic dividing technique that can minimize the amount of calculation required to secure data.

    METHOD AND SYSTEM FOR ADDITIVE HOMOMORPHIC ENCRYPTION SCHEME WITH OPERATION ERROR DETECTION FUNCTIONALITY
    7.
    发明申请
    METHOD AND SYSTEM FOR ADDITIVE HOMOMORPHIC ENCRYPTION SCHEME WITH OPERATION ERROR DETECTION FUNCTIONALITY 审中-公开
    具有操作错误检测功能的加法均质加压方案的方法和系统

    公开(公告)号：US20160330017A1

    公开(公告)日：2016-11-10

    申请号：US15147806

    申请日：2016-05-05

    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

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

    IPC: H04L9/00 ,  H04L9/30 ,  H04L9/06

    CPC classification number: H04L9/008 ,  H04L9/304

    Abstract: Provided are a method and a system for an additive homomorphic encryption scheme with operation error detection functionality. A plaintext is obtained by decrypting a ciphertext encrypted based on a homomorphic encryption technique and subjected to an operation and lower setting bits corresponding to additional secret information included in a final private-key are extracted as plaintext information from the acquired plaintext. An operation error check is performed on the remaining bits other than the lower setting bits in the acquired plaintext.

    Abstract translation: 提供了一种具有操作错误检测功能的加法同态加密方案的方法和系统。 通过解密基于同态加密技术加密并经受操作的密文获得明文，并且从所获取的明文中提取包含在最终私钥中的附加秘密信息的较低设置比特数作为明文信息。 对所获取的明文中的低位设置位以外的剩余位执行操作错误检查。

    DECRYPTABLE INDEX GENERATION METHOD FOR RANGE SEARCH, SEARCH METHOD, AND DECRYPTION METHOD
    8.
    发明申请
    DECRYPTABLE INDEX GENERATION METHOD FOR RANGE SEARCH, SEARCH METHOD, AND DECRYPTION METHOD 审中-公开
    用于范围搜索，搜索方法和分解方法的可分解索引生成方法

    公开(公告)号：US20150270958A1

    公开(公告)日：2015-09-24

    申请号：US14662126

    申请日：2015-03-18

    Applicant: Electronics and Telecommunications Research Institute

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

    IPC: H04L9/08 ,  G06F17/30

    CPC classification number: G06F16/2228 ,  H04L9/3239

    Abstract: Disclosed herein are a method that generates an index for an efficient range search in an encrypted DB, and a decryption apparatus and method that are capable of searching for desired data and decrypting search results using the index generation method. The presented index generation method includes preparing a private key and a one-way function, calculating a tag for an input plaintext interval using the private key and the one-way function, and dividing the plaintext interval into a plurality of partial intervals, encrypting information of a partial interval including plaintext using the tag, and then generating an encrypted index.

    Abstract translation: 这里公开了一种生成用于加密DB中的有效范围搜索的索引的方法，以及能够使用索引生成方法搜索期望数据和解密搜索结果的解密装置和方法。 所提出的索引生成方法包括准备私钥和单向函数，使用私钥和单向函数计算输入明文间隔的标签，并将明文间隔划分为多个部分间隔，加密信息 包括使用标签的明文的部分间隔，然后生成加密的索引。

    METHOD AND APPARATUS FOR GENERATING SECRET KEY BASED ON NEURAL NETWORK SYNCHRONIZATION
    9.
    发明申请
    METHOD AND APPARATUS FOR GENERATING SECRET KEY BASED ON NEURAL NETWORK SYNCHRONIZATION 有权

    公开(公告)号：US20210336779A1

    公开(公告)日：2021-10-28

    申请号：US17239237

    申请日：2021-04-23

    Applicant: Electronics and Telecommunications Research Institute

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

    IPC: H04L9/08 ,  G06N3/04

    Abstract: A method and an apparatus for generating a secret key for encrypted communication using a synchronized neural network, which includes: generating initial codewords based on a bit string of weight values of the synchronized neural network and transmitting a first partial codeword of the initial codewords to a device of another party; receiving a second partial codeword generated by the device of the other party and combining final codewords based on the second partial codeword received from the device of the party and the bit string of the weight values; performing an error correction on the combined final codewords and transmitting first restoration success information according to the error correction to the device of the other party; and receiving second restoration success information from the device of the other party and generating the secret key based on the restoration success information of the device of the other party, are provided.

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