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公开(公告)号：KR1020090065273A
公开(公告)日：2009-06-22
申请号：KR1020070132759
申请日：2007-12-17
Applicant: 한국전자통신연구원
IPC: G09C1/10 , G06K19/073 , H04L12/22
Abstract: A second-order differential power analysis attack method and a second-order differential electromagnetic analysis attack method are provided to be applied to an encoding apparatus in which a plurality of intermediate values is parallel processed. A power consumption of an encoding apparatus is measured(301). The measured power consumption is processed by using a pre-process function(302). A plurality of intermediate values about each presumed key is calculated by inputting a plurality of presumed keys to an estimated model(303). A power consumption corresponding to each presumed key is estimated by using the intermediate values. A correlation coefficient between the pre-processed power consumption and the estimated power consumption is calculated(304). A key used in the encoding apparatus among the presumed keys is determined by using the correlation coefficient(305).
Abstract translation: 提供二阶微分功率分析攻击方法和二阶微分电磁分析攻击方法，以应用于并行处理多个中间值的编码装置。 测量编码装置的功耗（301）。 通过使用预处理功能（302）处理所测量的功率消耗。 通过将多个推测密钥输入到估计模型（303）来计算关于每个推定密钥的多个中间值。 通过使用中间值来估计对应于每个假设密钥的功耗。 计算预处理功率消耗与估计功耗之间的相关系数（304）。 通过使用相关系数（305）来确定推定密钥中的编码装置中使用的密钥。
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公开(公告)号：KR100341852B1
公开(公告)日：2002-06-26
申请号：KR1019990036259
申请日：1999-08-30
Applicant: 한국전자통신연구원
IPC: H04L9/32
Abstract: 본발명은서버-클라이언트응용프로그램에독립적인인증시스템및 인증방법에관한것으로, 네트워크컴퓨팅환경에서서버-클라이언트응용프로그램에독립적으로적용할수 있으며동시에다수의응용또는적용할서버-클라이언트응용을선택하여적용할수 있는인증방법이다. 본발명은서버-클라이언트컴퓨팅환경에서클라이언트가서버의서비스를받기전에정당한사용자인가를서버가확인하고반대로클라이언트는서비스를제공하는서버가정당한서버인가를확인하여보호하고자하는정보가위험지역으로불법유출되지않도록사전에인증기능을수행하는방법이다. 또한, 본발명은서버-클라이언트응용프로그램의수정또는변경, 인증수단정합을위한서버-클라이언트응용프로그램개발을고려하지않아도되며, 인증수단이표준화되지않은상태에서도많은서버-클라이언트응용프로그램에적용이용이한인증방법이다.
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公开(公告)号：KR1020010057840A
公开(公告)日：2001-07-05
申请号：KR1019990061252
申请日：1999-12-23
Applicant: 한국전자통신연구원
Abstract: PURPOSE: An apparatus and method are provided to safely protect hard disk data by inserting the data into the middle of a cable connected between a hard disk and an I/O controller. CONSTITUTION: A hard disk controller interface(21) receives a signal from an IDE controller mounted on a main board of a computer(30). The first memory(22) stores a function module. An IDE/ATA controller interface(25) applies a command for reading/recording a hard disk and checking a state. The third memory(26) stores a function processing module for controlling a hard disk. A microprocessor(23) receives a disk approach request from the hard disk controller interface(21), and transmits a disk approach request signal to the IDE/ATA controller interface(25). The second memory(24) stores data processed from the microprocessor(23).
Abstract translation: 目的：提供一种装置和方法，通过将数据插入连接在硬盘和I / O控制器之间的电缆的中间来安全地保护硬盘数据。 构成：硬盘控制器接口（21）从安装在计算机主板（30）上的IDE控制器接收信号。 第一存储器（22）存储功能模块。 IDE / ATA控制器接口（25）应用用于读取/记录硬盘并检查状态的命令。 第三存储器（26）存储用于控制硬盘的功能处理模块。 微处理器（23）从硬盘控制器接口（21）接收磁盘接近请求，并向IDE / ATA控制器接口（25）发送磁盘接近请求信号。 第二存储器（24）存储从微处理器（23）处理的数据。
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公开(公告)号：KR101026439B1
公开(公告)日：2011-04-07
申请号：KR1020090065769
申请日：2009-07-20
Applicant: 한국전자통신연구원
CPC classification number: H04L9/0618 , H04L9/003 , H04L2209/043
Abstract: 본 발명은 복수의 S-박스를 하나의 마스킹 역원 테이블로 마스킹할 수 있도록 구성하여 SEED 암호화에서 차분 전력 분석 공격을 방어하기 위한 마스킹 연산시 S-박스의 마스킹에 필요한 연산량과 RAM 사용량을 효과적으로 줄일 수 있는 것을 특징으로 한다.
SEED, 암호화, S-박스, 마스킹, 차분 전력 분석 공격-
公开(公告)号：KR100949538B1
公开(公告)日：2010-03-25
申请号：KR1020080088552
申请日：2008-09-09
Applicant: 한국전자통신연구원
IPC: H04L9/14
CPC classification number: H04L9/0631 , H04L2209/12 , H04L2209/24
Abstract: 본 발명은 AES 라인달 알고리즘을 이용하는 암호화 및 복호화 장치와 그 방법을 제공하기 위한 것이다.
이를 위해 본 발명은 제 1 라운드에 대한 라운드키 및 제 2 내지 마지막 라운드에 대한 제 1 부분 라운드키를 연산하여 제 2 내지 마지막 라운드에 대한 라운드키를 생성하는 라운드키 연산부; 및 상기 제 1 내지 마지막 라운드에 대한 라운드키를 이용하여 암호화 또는 복호화를 위한 연산을 수행하는 라운드 실행부를 포함하는 것을 특징으로 한다.
AES 라인달 알고리즘, 암호화, 복호화, 라운드키-
Patent Agency Ranking
公开(公告)号：KR1020100029871A
公开(公告)日：2010-03-18
申请号：KR1020080088552
申请日：2008-09-09
Applicant: 한국전자통신연구원
IPC: H04L9/14
CPC classification number: H04L9/0631 , H04L2209/12 , H04L2209/24
Abstract: PURPOSE: An encoding/decoding apparatus and a method thereof are provided to minimize memory access by loading only a subround key in a second or final round among multiple rounds. CONSTITUTION: A round key computation unit(330) generates a round key for a second or final round by computing the first subround key for a second or final round and a round key for a first round. A round executor(340) executes a computation for encoding or decoding by using a round key for the round key for the first round and the round key for the second or final round. A round key generating unit(310) generates a round key for the first round including the first or k-th part round key and a round key for the second or final round by using an inputted key.
Abstract translation: 目的：提供一种编码/解码装置及其方法，用于通过在多个回合中仅在第二次或最后一轮中加载子环来最小化存储器访问。 构成：圆密钥计算单元（330）通过计算第二轮或最后一轮的第一子环和用于第一轮的圆键来生成第二轮或最后轮的轮密钥。 圆形执行器（340）通过使用用于第一轮的圆键的圆键和第二轮或最后一轮的圆键执行用于编码或解码的计算。 循环密钥生成单元（310）通过使用输入的密钥生成包括第一或第k个部分循环密钥的第一轮的循环密钥和用于第二或最后一轮的循环密钥。
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公开(公告)号：KR100926749B1
公开(公告)日：2009-11-16
申请号：KR1020070132759
申请日：2007-12-17
Applicant: 한국전자통신연구원
IPC: G09C1/10 , G06K19/073 , H04L12/22
Abstract: A second-order differential power analysis attack method and a second-order differential electromagnetic analysis attack method are provided to be applied to an encoding apparatus in which a plurality of intermediate values is parallel processed. A power consumption of an encoding apparatus is measured(301). The measured power consumption is processed by using a pre-process function(302). A plurality of intermediate values about each presumed key is calculated by inputting a plurality of presumed keys to an estimated model(303). A power consumption corresponding to each presumed key is estimated by using the intermediate values. A correlation coefficient between the pre-processed power consumption and the estimated power consumption is calculated(304). A key used in the encoding apparatus among the presumed keys is determined by using the correlation coefficient(305).
Abstract translation: 提供二阶微分功率分析攻击方法和二阶微分电磁分析攻击方法，以将其应用于并行处理多个中间值的编码设备。 测量编码设备的功耗（301）。 测量的功耗通过使用预处理功能来处理（302）。 通过将多个假定密钥输入到估计模型来计算关于每个假定密钥的多个中间值（303）。 通过使用中间值来估计与每个推测密钥对应的功耗。 计算预处理功耗与估计功耗之间的相关系数（304）。 通过使用相关系数（305）来确定推测密钥中的编码装置中使用的密钥。
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公开(公告)号：KR100466546B1
公开(公告)日：2005-01-15
申请号：KR1020030022523
申请日：2003-04-10
Applicant: 한국전자통신연구원
IPC: H04K1/00
Abstract: PURPOSE: A key transceiving method using frequency band division is provided to assign transmission key bits to each divided band, and to forcibly insert intrinsic frequency components to transmit and receive data. CONSTITUTION: A transmitter generates a key to be transmitted(S201), and forcibly inserts preset spectrum coefficients into a corresponding band according to a bit value(S203). The transmitter scrambles the entire transmission bandwidth to safely transmit a key bit(S205), and converts into a time area signal by performing an IFFT process(S206). The transmitter changes the signal into an analog signal to transmit the analog signal(S207,S209). A receiver receives the analog signal(S211), performs an A/D conversion(S213), and carries out an FFT process(S215). The receiver descrambles displaced frequency coefficients into an original position(S216). The receiver extracts energy information of a spectrum, decides whether the assigned key bit is '0' or '1'(S217), and restores entire key bits(S219).
Abstract translation: 目的：提供一种使用频带划分的密钥收发方法，以将传输密钥位分配给每个划分的频带，并强制插入固有频率分量以发送和接收数据。 构成：发射机产生要发射的密钥（S201），并根据比特值将预设频谱系数强制插入相应的频带（S203）。 发射机对整个传输带宽进行加扰以安全地发送密钥比特（S205），并通过执行IFFT处理将其转换为时间区域信号（S206）。 发送器将该信号变成模拟信号以发送模拟信号（S207，S209）。 接收器接收模拟信号（S211），执行A / D转换（S213），并执行FFT处理（S215）。 接收器将移位的频率系数解扰到原始位置（S216）。 接收机提取频谱的能量信息，决定分配的密钥位是“0”还是“1”（S217），并恢复整个密钥位（S219）。
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公开(公告)号：KR100834096B1
公开(公告)日：2008-06-02
申请号：KR1020070045917
申请日：2007-05-11
Applicant: 한국전자통신연구원
Abstract: An ARIA(Academy Research Institute Agency) encryption method for counter-measuring a high order DPA is provided to improve a speed by applying a function calculation method only to a first round and the last round. A calculation process is performed by applying d mask values to an input plane text and a round key. A mask value calculation process is performed to calculate the mask values by updating Sbox in the substitution layer. A masking value calculation process is performed in a diffusion layer for composing a round function. The calculation process includes a process for generating random masks of R1 to Rd, a process for initializing an output values, RX to which the d random masks are applied, and a process for performing a masking calculation process for the input plain text and the round key.
Abstract translation: 提供用于对高阶DPA进行反向测量的ARIA（Academy Research Institute Agency）加密方法，以通过仅对第一轮和最后一轮应用函数计算方法来提高速度。 通过将d个掩模值应用于输入平面文本和圆键来执行计算处理。 执行掩模值计算处理以通过更换替换层中的Sbox来计算掩模值。 在用于组合循环函数的扩散层中执行掩蔽值计算处理。 计算处理包括用于生成R1到Rd的随机掩码的处理，用于初始化输出值的过程，应用d随机掩码的RX以及用于对输入的纯文本和轮进行掩蔽计算处理的处理 键。
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公开(公告)号：KR1020010019705A
公开(公告)日：2001-03-15
申请号：KR1019990036259
申请日：1999-08-30
Applicant: 한국전자통신연구원
IPC: H04L9/32
CPC classification number: H04L63/0807
Abstract: PURPOSE: An authentication system and method independent of server-client application programs are provided which can be independently applied to the server-client application program in a network computer environment and select multiple applications or a server-client application. CONSTITUTION: A server confirms if a client is an authenticated one deserving to be given service of the server in a server-client computing environment, and the client confirms if the server providing the service is an authenticated one, not to allow information to be protected to flow into dangerous regions. This does not requires development of a server-client application program for matching of authentication means and modification or change of the server-client application program.
Abstract translation: 目的：提供独立于服务器 - 客户端应用程序的认证系统和方法，可以在网络计算机环境中独立应用于服务器 - 客户端应用程序，并选择多个应用程序或服务器 - 客户端应用程序。 规定：服务器确认客户端是否是服务器 - 客户端计算环境中值得服务的经过身份验证的客户端，客户端确认提供服务的服务器是否是经过身份验证的服务器，不允许信息受到保护 流入危险地区。 这不需要开发用于匹配认证装置的服务器 - 客户端应用程序，并且修改或更改服务器 - 客户端应用程序。
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