公开(公告)号：US20130336480A1

公开(公告)日：2013-12-19

申请号：US13909155

申请日：2013-06-04

Applicant: Electronics and Telecommunications Research Institute

Inventor： Deukjo HONG ,  Jung Keun LEE ,  Dong-Chan KIM ,  Daesung KWON ,  Kwon Ho RYU

IPC: H04L9/08

CPC classification number: H04L9/0816 ,  H04L9/0618 ,  H04L2209/24

Abstract: An encryption apparatus and method that provide a mobile fast block cipher algorithm that supports low-power encryption. The encryption apparatus includes a user interface unit, a key scheduler unit, an initial conversion unit, a round function processing unit, and a final conversion unit. The user interface unit receives plain text to be encrypted and a master key. The key scheduler unit generates a round key from the master key. The initial conversion unit generates initial round function values from the plain text. The round function processing unit repeatedly processes a round function using the round key and the initial round function values. The final conversion unit generates ciphertext from the resulting values of the round function processed in a final round by the round function processing unit.

Abstract translation: 一种提供支持低功率加密的移动快速块密码算法的加密装置和方法。 加密装置包括用户接口单元，密钥调度器单元，初始转换单元，循环函数处理单元和最终转换单元。 用户接口单元接收要加密的纯文本和主密钥。 密钥调度器单元从主密钥生成一个循环密钥。 初始转换单元从纯文本生成初始循环函数值。 循环函数处理单元使用循环密钥和初始循环函数值重复处理循环函数。 最终转换单元由循环函数处理单元从最终轮中处理的循环函数的结果值生成密文。

公开(公告)号：US20140355755A1

公开(公告)日：2014-12-04

申请号：US14155756

申请日：2014-01-15

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Deukjo HONG ,  Dong-Chan KIM ,  Jung Keun LEE ,  Daesung KWON

IPC: H04L9/28

CPC classification number: H04L9/0643 ,  H04L2209/38

Abstract: An apparatus and method for performing a compression operation in a fast message hash algorithm, which receive a 512-bit message and 512-bit chaining variable data, repeatedly calculate a 128-bit register-based step function, and then produce updated 512-bit chaining variable data. For this, the apparatus for performing a compression operation in a hash algorithm includes a message extension unit for receiving a message and generating a plurality of extended messages. A chaining variable initial conversion unit receives chaining variable data and converts the chaining variable data into initial state data. A step function operation unit repeatedly calculates a step function based on the initial state data and the plurality of extended messages and produces final state data. A chaining variable final conversion unit generates updated chaining variable data from the chaining variable data using the final state data, and outputs the updated chaining variable data.

Abstract translation: 一种用于在快速消息散列算法中执行压缩操作的装置和方法，其接收512位消息和512位链接可变数据，重复计算128位基于寄存器的步进功能，然后产生更新的512位 链接可变数据。 为此，用于在散列算法中执行压缩操作的装置包括用于接收消息并生成多个扩展消息的消息扩展单元。 链接变量初始转换单元接收链接变量数据并将链接变量数据转换为初始状态数据。 步进功能操作单元基于初始状态数据和多个扩展消息重复计算阶梯函数，并产生最终状态数据。 链接变量最终转换单元使用最终状态数据从链接变量数据生成更新的链接变量数据，并输出更新的链接变量数据。

公开(公告)号：US20160218861A1

公开(公告)日：2016-07-28

申请号：US14741511

申请日：2015-06-17

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Deukjo HONG ,  Jung Keun LEE ,  Woo-Hwan KIM ,  Daesung KWON

IPC: H04L9/06

CPC classification number: H04L9/0643 ,  H04L2209/30 ,  H04L2209/38

Abstract: An operation apparatus includes a message expansion unit, a state data initiation unit, a state data generation unit, and a chain variable update unit. The message expansion unit generates a plurality of expanded messages using a message. The state data initiation unit generates the initial value of state data using chain variable data. The state data generation unit generates the final value of the state data by iterating a combination function and a step function using the state data and the plurality of expanded messages. The chain variable update unit updates the chain variable data using the state data of the final value.

Abstract translation: 操作装置包括消息扩展单元，状态数据启动单元，状态数据生成单元和链式可变更新单元。 消息扩展单元使用消息生成多个扩展消息。 状态数据发生单元使用链变量数据生成状态数据的初始值。 状态数据生成单元通过使用状态数据和多个扩展消息迭代组合函数和阶梯函数来生成状态数据的最终值。 链变更新单元使用最终值的状态数据更新链变量数据。

公开(公告)号：US20160056954A1

公开(公告)日：2016-02-25

申请号：US14810705

申请日：2015-07-28

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jung Keun LEE ,  Bonwook KOO ,  Dongyoung ROH ,  Woo-Hwan KIM ,  Daesung KWON

IPC: H04L9/06 ,  H04L9/08

CPC classification number: H04L9/0625 ,  H04L9/0861 ,  H04L2209/24

Abstract: An apparatus and method for providing a Feistel-based variable length block cipher, which are configured to when plaintext having a certain bit length is encrypted, generate ciphertext having the same bit length as plaintext, and to decrypt ciphertext into plaintext having the same bit length. The apparatus includes an encryption/decryption key generation unit for generating a number of encryption/decryption keys corresponding to a preset number of rounds, based on a secret key, the length of the secret key, the length of plaintext, and a round constant; an encryption/decryption tweak generation unit for generating an encryption/decryption tweak based on a tweak, a length of tweak, and the length of plaintext; and a ciphertext output unit for outputting ciphertext having length identical to that of plaintext, based on plaintext, the length of the plaintext, the length of the secret key, the encryption/decryption keys, and the encryption/decryption tweak.

Abstract translation: 一种用于提供基于Feistel的可变长度块密码的装置和方法，被配置为当具有特定比特长度的明文被加密时，生成具有与明文相同的比特长度的密文，并将密文解密为具有相同比特长度的明文 。 该装置包括：加密/解密密钥生成单元，用于基于秘密密钥，秘密密钥的长度，明文长度和圆常数生成与预设的轮次数相对应的多个加密/解密密钥; 加密/解密调整生成单元，用于基于调整，调整长度和明文长度生成加密/解密调整; 以及密文输出单元，用于根据明文，明文长度，秘密密钥的长度，加密/解密密钥和加密/解密调整，输出长度与明文长度相同的密文。

公开(公告)号：US20150032704A1

公开(公告)日：2015-01-29

申请号：US14305147

申请日：2014-06-16

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Dong-Chan KIM ,  Deukjo HONG ,  Jung Keun LEE ,  Daesung KWON

IPC: G06F17/30

CPC classification number: H03M7/3059

Abstract: An apparatus and method for performing a compression operation in a hash algorithm are provided. The apparatus includes an interface unit, a message extension unit, a chain variable initial conversion unit, a compression function computation unit, and a chain variable final conversion unit. The interface unit receives a message and chain variable data. The message extension unit generates a plurality of extended messages from the message. The chain variable initial conversion unit converts the chain variable data into initial state data for a compression function. The compression function computation unit repeatedly computes extended message binding and step functions based on the initial state data and the plurality of extended messages, and performs combination with a final extended message, thereby computing final state data. The chain variable final conversion unit generates and outputs chain variable data, into which the chain variable data has been updated, using the final state data.

Abstract translation: 提供了一种用于在散列算法中执行压缩操作的装置和方法。 该装置包括接口单元，消息扩展单元，链式可变初始转换单元，压缩函数计算单元和链式可变最终转换单元。 接口单元接收消息和链变量数据。 消息扩展单元从消息生成多个扩展消息。 链变量初始转换单元将链变量数据转换为用于压缩函数的初始状态数据。 压缩函数计算单元基于初始状态数据和多个扩展消息重复计算扩展消息绑定和步骤功能，并且与最终扩展消息进行组合，从而计算最终状态数据。 链变量最终转换单元使用最终状态数据生成并输出链变量数据已更新的链变量数据。