公开(公告)号：KR100824733B1

公开(公告)日：2008-04-28

申请号：KR1020060123481

申请日：2006-12-07

Applicant: 고려대학교 산학협력단

Inventor： 정용화 ,  정승환 ,  이성주 ,  문대성 ,  조충호

IPC: G06K9/00 ,  G06T1/00

CPC classification number: G06F21/32 ,  G06F21/606 ,  H04L9/3231 ,  H04L2209/805

Abstract: A method and an apparatus for hiding fingerprint data using a 3D fuzzy vault and a method and an apparatus for authenticating fingerprint data using the 3D fuzzy vault are provided to apply the fuzzy vault theory in consideration of a 3D space in order to protect bio information so as to increase the quantity of fake fingerprint information for hiding fingerprint information, and improve security without decreasing a recognition rate. A method for hiding fingerprint data using a 3D fuzzy vault includes a step of receiving an image of the fingerprint of an authenticated user using a sensing device and extracting fingerprint information including the position, angle and shape of a characteristic point from the image(510), a step of generating a polynomial having the extracted fingerprint information as a coefficient(520), a step of randomly generating fake fingerprint information composed of the position, angle and shape of the characteristic point and embedding the fake fingerprint information in the extracted fingerprint information(530) and a step of storing the polynomial and the fingerprint information in which the fake fingerprint information is embedded in a database(540).

Abstract translation: 提供了一种使用3D模糊保险库隐藏指纹数据的方法和装置，并且提供了使用3D模糊库进行认证指纹数据的方法和装置，以便考虑3D空间来应用模糊保险库理论，以便保护生物信息 增加隐藏指纹信息的伪指纹信息的数量，提高安全性而不降低识别率。 使用3D模糊保险库隐藏指纹数据的方法包括使用感测装置接收认证用户的指纹图像的步骤，并且从图像（510）提取包括特征点的位置，角度和形状的指纹信息， 生成具有所提取的指纹信息的多项式作为系数的步骤（520），随机生成由所述特征点的位置，角度和形状构成的假指纹信息，并将所述指纹信息嵌入所提取的指纹信息 （530），以及存储将数据库中嵌入了伪指纹信息的多项式和指纹信息（540）的步骤。

公开(公告)号：KR100836866B1

公开(公告)日：2008-06-11

申请号：KR1020060139161

申请日：2006-12-30

Applicant: 고려대학교 산학협력단

Inventor： 조충호 ,  정용화 ,  동정식 ,  오룡 ,  김태섭 ,  정승환 ,  이성주

IPC: G06K9/00 ,  H04B7/24 ,  G06K17/00

CPC classification number: G06F21/31 ,  G06F7/58 ,  G06F21/64 ,  G06K9/00067 ,  H04B7/24

Abstract: A system and a method for authenticating a fingerprint by using wireless communication are provided to prevent alteration of fingerprint authentication data by strengthening data security in a wired/wireless communication section, and check data integrity of each transmission section by checking the alteration of the fingerprint authentication data in each transmission section unit. A user terminal(170) encodes fingerprint data generated by extracting feature of a user fingerprint. An AP(Access Point)(180) receives the fingerprint data by connecting to the user terminal through wireless communication and attaches a certifier to the received fingerprint data. An authentication server(190) generates an authentication result by comparing the fingerprint data including the certifier with a fingerprint stored in a database(194). The certifier is generated in the AP by using a random number generated in the authentication server. The authentication server verifies integrity of the fingerprint data attached with the certifier by using the certifier.

Abstract translation: 提供一种通过使用无线通信认证指纹的系统和方法，以通过加强有线/无线通信部分中的数据安全性来防止指纹认证数据的改变，并通过检查指纹认证的改变来检查每个传输部分的数据完整性 每个传输部分单元中的数据。 用户终端（170）对通过提取用户指纹的特征产生的指纹数据进行编码。 AP（接入点）（180）通过无线通信连接到用户终端来接收指纹数据，并将验证者附加到所接收的指纹数据。 认证服务器（190）通过将包括验证者的指纹数据与存储在数据库中的指纹进行比较来生成认证结果（194）。 验证者通过使用认证服务器中生成的随机数在AP中生成。 认证服务器通过使用验证者来验证附带认证者的指纹数据的完整性。

公开(公告)号：KR100660191B1

公开(公告)日：2006-12-21

申请号：KR1020050108222

申请日：2005-11-11

Applicant: 고려대학교 산학협력단

Inventor： 정용화 ,  문대성 ,  김태해 ,  정승환

IPC: H04N1/387 ,  G06K9/00 ,  H04N5/913 ,  G06T1/00

Abstract: A method for inserting/detecting a double watermark and an apparatus therefor are provided to simultaneously secure integrity certification and the storage of important information to stably protect an original image. A certain image is received(211). A strong watermark is inserted into the image(212). A weak watermark is inserted into the image into which the strong watermark is inserted(213). The discrete wavelet transformation of the image is performed. A coefficient capable of inserting the strong watermark is selected among coefficients generated by the transformed result. The watermark is inserted into the selected coefficient. The inverse discrete wavelet transformation of information into which the watermark is inserted is performed.

Abstract translation: 提供了一种用于插入/检测双重水印的方法及其装置，以同时保护完整性证明和重要信息的存储以稳定地保护原始图像。 接收到某个图像（211）。 强水印被插入图像（212）。 将弱水印插入插入了强水印的图像中（213）。 图像的离散小波变换被执行。 在由变换结果生成的系数中选择能够插入强水印的系数。 水印被插入到选定的系数中。 执行插入水印的信息的逆离散小波变换。