公开(公告)号：US09577828B2

公开(公告)日：2017-02-21

申请号：US14668566

申请日：2015-03-25

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jung-Yeon Hwang ,  Sung-Kyong Un ,  Ku-Young Chang ,  Hyun-Sook Cho

IPC: H04L9/30 ,  H04L9/08 ,  H04L9/32

CPC classification number: H04L9/3073 ,  H04L9/0844 ,  H04L9/3013 ,  H04L9/3252

Abstract: Exemplary embodiments of the present invention relate to a batch verification method for verifying a plurality of authentication data or digital signature values and an apparatus thereof. A batch verification method according to an embodiment of the present invention comprises: rearranging N pairs of individual instances which compose a batch verification instance; selecting N−1 verification exponents from a verification exponent set E which is used for the batch verification; and performing the batch verification for the rearranged batch verification instance by using the selected verification exponents. Exemplary embodiments of the present invention can be suitable for digital signature and cryptographic confirmation. According to exemplary embodiments, verification computation amount of a plurality of authentication data or digital signature values can be significantly reduced.

Abstract translation: 本发明的示例性实施例涉及用于验证多个认证数据或数字签名值的批次验证方法及其装置。 根据本发明的实施例的批量验证方法包括：重新构成组成批次验证实例的N对单独实例; 从用于批次验证的验证指数集合E中选择N-1个验证指数; 并通过使用所选的验证指数对重新排列的批次验证实例执行批量验证。 本发明的示例性实施例可以适用于数字签名和加密确认。 根据示例性实施例，可以显着地减少多个认证数据或数字签名值的验证计算量。

公开(公告)号：US12095908B2

公开(公告)日：2024-09-17

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 ,  G06F18/214 ,  G06N3/04 ,  H04L9/06

CPC classification number: H04L9/0861 ,  G06F18/214 ,  G06N3/04 ,  H04L9/0643 ,  H04L9/0825 ,  H04L9/085

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.

公开(公告)号：US09331851B2

公开(公告)日：2016-05-03

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 ,  H04L9/14 ,  H04L9/30 ,  H04L9/00

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。

公开(公告)号：US09258130B2

公开(公告)日：2016-02-09

申请号：US13947693

申请日：2013-07-22

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jung-Yeon Hwang ,  Ku-Young Chang ,  Pil-Joong Lee ,  Sung-Wook Eom ,  Dae-Hun Nyang

IPC: H04L9/08 ,  H04L9/32 ,  H04L9/00

CPC classification number: H04L9/3281 ,  H04L9/00 ,  H04L9/08 ,  H04L9/0844 ,  H04L9/32 ,  H04L9/3255 ,  H04L2209/42

Abstract: Disclosed herein are an apparatus and method for anonymity-based authentication and key agreement capable of providing a communication message binding property. The apparatus includes a signature verification unit and a binding checking unit. The signature verification unit receives a plurality of messages, each carrying a signature including link information of a sender, and verifies the signature of each of the plurality of messages. The binding checking unit, if it is determined by the signature verification unit that the signature is valid, determines whether the plurality of messages has been sent by an identical sender based on the link information of the signature.

Abstract translation: 这里公开了一种能够提供通信消息绑定属性的匿名认证和密钥协商的装置和方法。 该装置包括签名验证单元和装订检查单元。 签名验证单元接收多个消息，每个消息携带包括发送者的链接信息的签名，并且验证多个消息中的每一个的签名。 绑定检查单元如果由签名验证单元确定签名有效，则基于签名的链接信息确定多个消息是否已被相同发送者发送。