[특허]Data communication system

Data communication system 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H04L-009/00
출원번호	US-0070061 (1993-06-01)
우선권정보	GB-0011648 (1992-06-02)
발명자 / 주소	Avarne Simon A. B. (Liphook GB2)
출원인 / 주소	Racal-Datacom (GB2 03)
인용정보	피인용 횟수 : 81 인용 특허 : 0

초록 ▼

In a data communication system a plurality of users are equipped with respective devices for computation and authentication of message authenticators. Each device stores a common cryptographic function; a common secret key and a respective non-secret offset for the key. They are programmed to perform the functions of: (i) computing and outputting an authenticator for an entered message using the cryptographic function and key combined with the respective offset; and (ii) computing an authenticator for an entered message using the cryptographic function and key combined with any entered offset, comparing that authenticator with one received with the message and displaying a “pass”or “fail”decision. The devices are incapable of displaying or otherwise outputting any authenticator computed using any offset other than its respective stored offset, however. In this way it can be ensured that a transmitted authenticator can act as a verifiable “signature”to a message uniquely identifying the sender.

대표청구항 ▼

A data communication system including at least a first station and a second station, said first and second stations respectively including first and second memory means for storing a cryptographic function and a secret cryptographic key both of which are common to said first and second stations, wherein said improvement in said data communication system comprises: said first station further including: said first memory means further including a non-secret first offset for said key which is individual to said first station; first input means for receiving a first message signal; first combining means for combining said cryptographic key with said first offset to generate a first modified key; first processing means for encrypting said first message signal with said first modified key to generate a first authenticator signal; and first transmission means for transmitting said first offset, said first message signal and said first authenticator signal to said second station; and said second station further including: said second memory means further including a non-secret second offset for said key which is individual to said second station; second input means for receiving said first offset, said first message signal and said first authenticator signal from said first station; second combining means for combining said cryptographic key stored in said second station with said first offset to generate a second modified key; second processing means for generating a second authenticator signal from said first message signal; first comparing means for comparing said first authenticator signal with said second authenticator signal to generate a first indication signal indicating whether said first and second authenticator signals are identical; and first output means for outputting said first indication signal but without outputting said second authenticator signal.

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

내보내기 구분	파일저장 인쇄 메일전송
구성항목	기본정보 상세정보 관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표IPC 관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 공고번호, 공고일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표출원인, 출원인국적, 출원인주소, 발명자, 발명자E, 발명자코드, 발명자주소, 발명자 우편번호, 발명자국적, 대표IPC, IPC코드, 요약, 미국특허분류, 대리인주소, 대리인코드, 대리인(한글), 대리인(영문), 국제공개일자, 국제공개번호, 국제출원일자, 국제출원번호, 우선권, 우선권주장일, 우선권국가, 우선권출원번호, 원출원일자, 원출원번호, 지정국, Citing Patents, Cited Patents
저장형식	Text(ASCII format) Excel format PIAS분석(.xls)
메일정보	받는사람 (필수) @ 보내는사람 (선택) @ 제목 내용 KISTI 검색결과 이메일 서비스
안내	총 건의 자료가 검색되었습니다. 다운받으실 자료의 인덱스를 입력하세요. (1-10,000) 검색결과의 순서대로 최대 10,000건 까지 다운로드가 가능합니다. 데이타가 많을 경우 속도가 느려질 수 있습니다.(최대 2~3분 소요) 다운로드 파일은 UTF-8 형태로 저장됩니다. 파일의 내용이 제대로 보이지 않을실 때는 웹브라우저 상단의 보기 -> 인코딩 -> 자동선택 여부를 확인하십시오. ~ Text(ASCII format) Excel format

연합인증

Data communication system 원문보기

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Data communication system 원문보기

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