公开(公告)号：KR1020130024498A

公开(公告)日：2013-03-08

申请号：KR1020110087982

申请日：2011-08-31

Applicant: 고려대학교 산학협력단

Inventor： 정익래 ,  이동훈 ,  천지영 ,  노건태

IPC: H04L9/28

CPC classification number: H04L9/0861

Abstract: PURPOSE: A group calculation providing method and a system thereof are provided to protect privacy between the participants for dispersed secret input groups. CONSTITUTION: A group calculation server(200) includes an encrypted union group calculation unit(210), a member test unit(220), a group calculation unit(230), a data reception unit(240), and a data transmission unit(250). The encrypted union group calculation unit generates an encrypted union group by executing union calculation for each group by cooperating with a plurality of participants. The member test unit determines whether elements which belong to each group are included in a union group. The group calculation unit executes group calculation when the calculation expression of the group calculation belongs to the encrypted union group. [Reference numerals] (210) Encrypted union group calculation unit; (220) Member test unit; (230) Group calculation unit; (240) Data reception unit; (250) Data transmission unit

Abstract translation: 目的：提供一种群体计算提供方法及其系统，以保护分散的秘密输入群体的参与者之间的隐私。 组件计算服务器（200）包括加密联合组计算单元（210），成员测试单元（220），组计算单元（230），数据接收单元（240）和数据传输单元 250）。 加密的联合组计算单元通过与多个参与者协作来执行每个组的联合计算来生成加密的联合组。 成员测试单元确定属于每个组的元素是否包含在联合组中。 当组计算的计算表达式属于加密联合组时，组计算单元执行组计算。 （附图标记）（210）加密联合组计算单元; （220）会员测试单位; （230）组计算单位; （240）数据接收单元; （250）数据传输单元

公开(公告)号：KR1020120059435A

公开(公告)日：2012-06-08

申请号：KR1020110127140

申请日：2011-11-30

Applicant: 고려대학교 산학협력단

Inventor： 이동훈 ,  정익래 ,  천지영 ,  노건태

IPC: G06F17/15 ,  G06F21/62

CPC classification number: G06F21/602

Abstract: PURPOSE: A group calculation method for protecting privacy is provided to protect the privacy of each participation module by preventing elements from being exposed from other participation modules. CONSTITUTION: Shuffled tuples are acquired by enabling each participation module to group preserving protocols(S11). The participation modules eliminates plain text including zero value from the acquired tuples(S12). The participation modules determine a union of the tuples. The participation modules transmit the determined union to other participation modules(S13). The participation module decodes elements which belong to the participation module from the elements of the group(S17).

Abstract translation: 目的：提供保护隐私的群体计算方法，通过防止元素暴露于其他参与模块来保护每个参与模块的隐私。 构成：通过使每个参与模块组合保存协议（S11）来获取混洗元组。 参与模块消除了从获取的元组中包含零值的纯文本（S12）。 参与模块决定了元组的联合。 参与模块将确定的联合传送给其他参与模块（S13）。 参与模块从组的元素中解码属于参与模块的元素（S17）。

公开(公告)号：KR101077973B1

公开(公告)日：2011-10-31

申请号：KR1020090124256

申请日：2009-12-14

Applicant: 고려대학교 산학협력단

Inventor： 이동훈 ,  정익래 ,  노건태

IPC: H04L9/14 ,  G06F21/62 ,  G06F12/14 ,  G06F9/06

Abstract: 본명세서에서개시하는암호화시스템은 n-비트(n-bit) 데이터의암호화를위한제1 임의데이터를생성하는제1 임의데이터생성부; 상기 n-비트데이터의암호화를위한제2 임의데이터를다차원벡터로생성하는제2 임의데이터생성부; 상기 n-비트데이터와상기제1 임의데이터를비트대 비트연산(bit by bit operation)하는연산부; 및상기비트대 비트연산의결과와상기다차원벡터를이용하여상기 n-비트데이터의암호화를완료하는암호화완료부를포함하여상기한과제를해결한다.

公开(公告)号：KR1020090005975A

公开(公告)日：2009-01-14

申请号：KR1020080064377

申请日：2008-07-03

Applicant: 고려대학교 산학협력단

Inventor： 권정옥 ,  정익래 ,  이동훈 ,  임종인

IPC: H04L12/58 ,  H04L9/08

CPC classification number: H04L51/12 ,  H04L9/0861

Abstract: A method for offering secrecy and full-direction safety by transmitting an email encoded with a password of an email account, and a recording medium storing the same are provided to offer the secrecy and the full-direction safety of the message by making a sender encode the email and transmitting the encoded mail to a receiver terminal. A sending terminal shares a first encoding key generated between the sending terminal and a sending mail server by using a first random number selected in the sending terminal and a second random number selected in the sending mail server. The sending mail server receives a first encoded message encoding an email message by using a second session key generated according to a third random number, which is selected in the sending terminal, and a second encoded message encoding a session key with the first encoding key. A mail receiving server decodes the second session key from the second encoded message by using the first encoding key, generates a modified second encoded message encoding the second session key by using the first session key, and receives the first encoding message and the modified second encoding message from the mail sending server.

Abstract translation: 提供通过发送用电子邮件帐户的密码编码的电子邮件和存储该电子邮件帐户密码的记录媒体提供保密和全方位安全的方法，以通过使发送者编码来提供消息的保密性和全方位的安全性 电子邮件并将编码的邮件发送到接收者终端。 发送终端通过使用在发送终端中选择的第一随机数和在发送邮件服务器中选择的第二随机数来共享在发送终端和发送邮件服务器之间生成的第一编码密钥。 发送邮件服务器通过使用根据在发送终端中选择的第三随机数生成的第二会话密钥和用第一编码密钥编码会话密钥的第二编码消息来接收编码电子邮件消息的第一编码消息。 邮件接收服务器通过使用第一编码密钥从第二编码消息解码第二会话密钥，通过使用第一会话密钥生成编码第二会话密钥的修改的第二编码消息，并且接收第一编码消息和修改的第二编码 来自邮件发送服务器的消息。

公开(公告)号：KR1020080067550A

公开(公告)日：2008-07-21

申请号：KR1020070004984

申请日：2007-01-16

Applicant: 고려대학교 산학협력단

Inventor： 임종인 ,  이동훈 ,  권정옥 ,  정익래

IPC: H04L9/08 ,  H04B5/00

CPC classification number: H04L9/0838 ,  H04L9/0869 ,  H04L9/0877 ,  H04L9/14

Abstract: A method and a system for exchanging a key among three-party using a smart card and a recording medium thereof are provided to improve the security by performing an authentication and key exchange between a client and a client without exposing session key information, which is exchanged between the clients, to a server. A method for exchanging a key among three-party using a smart card includes the steps of: selecting a first random number and a second random number as a predetermined random number at a smart card of a source client, transmitting an encryption sentence having the second random number to a server, and transmitting the encryption sentence having the first random number to a target client(310); transmitting the encryption sentence having the second random number to the target client(320); selecting third and fourth random numbers as a predetermined random number in the smart card of the target client, decoding the encryption sentence having the second random number, calculating the second random number, calculating a session key using the second and fourth random numbers(330), and transmitting the encryption sentence having the third and fourth random numbers to the source client(340); and decoding the encryption sentence having the third and fourth random numbers in the smart card of the source client, calculating the session key using the second and fourth random numbers, and sharing the session key(350).

Abstract translation: 提供一种使用智能卡及其记录介质的三方交换密钥的方法和系统，以通过在客户端和客户端之间进行认证和密钥交换而不暴露被交换的会话密钥信息来提高安全性 在客户端之间，到服务器。 一种使用智能卡的三方交换密钥的方法包括以下步骤：在源客户端的智能卡处选择作为预定随机数的第一随机数和第二随机数，发送具有第二个 向服务器发送随机数，并将具有第一随机数的加密语句发送到目标客户端（310）; 将具有第二随机数的加密语句发送到目标客户端（320）; 在目标客户端的智能卡中选择第三和第四随机数作为预定的随机数，解码具有第二随机数的加密语句，计算第二随机数，使用第二和第四随机数（330）计算会话密钥， ，并将具有第三和第四随机数的加密语句发送到源客户端（340）; 解码在源客户机的智能卡中具有第三和第四随机数的加密语句，使用第二和第四随机数计算会话密钥，并共享会话密钥（350）。