KR100734162B1 - 공중/개인키 쌍들의 안전한 분배 방법 및 장치 - Google Patents
공중/개인키 쌍들의 안전한 분배 방법 및 장치 Download PDFInfo
- Publication number
- KR100734162B1 KR100734162B1 KR1020017001434A KR20017001434A KR100734162B1 KR 100734162 B1 KR100734162 B1 KR 100734162B1 KR 1020017001434 A KR1020017001434 A KR 1020017001434A KR 20017001434 A KR20017001434 A KR 20017001434A KR 100734162 B1 KR100734162 B1 KR 100734162B1
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- South Korea
- Prior art keywords
- key
- private key
- encrypted
- public
- encrypted private
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
- H04L9/0816—Key establishment, i.e. cryptographic processes or cryptographic protocols whereby a shared secret becomes available to two or more parties, for subsequent use
- H04L9/0819—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s)
- H04L9/083—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s) involving central third party, e.g. key distribution center [KDC] or trusted third party [TTP]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
- H04L9/0816—Key establishment, i.e. cryptographic processes or cryptographic protocols whereby a shared secret becomes available to two or more parties, for subsequent use
- H04L9/0819—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s)
- H04L9/0825—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s) using asymmetric-key encryption or public key infrastructure [PKI], e.g. key signature or public key certificates
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
- H04L9/0861—Generation of secret information including derivation or calculation of cryptographic keys or passwords
- H04L9/0866—Generation of secret information including derivation or calculation of cryptographic keys or passwords involving user or device identifiers, e.g. serial number, physical or biometrical information, DNA, hand-signature or measurable physical characteristics
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
- H04L9/0894—Escrow, recovery or storing of secret information, e.g. secret key escrow or cryptographic key storage
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- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Storage Device Security (AREA)
- Computer And Data Communications (AREA)
Abstract
Description
본 발명은 첨부된 도면들을 참조하여 예를 통해 더 상세히 설명된다.
Claims (21)
- 클라이언트-서버 네크워크(100) 상의 개인키(221)를 보안하는 방법에 있어서,서버 프로세서(150) 상에서 제 1 키-쌍(211, 212)을 액세스하는 단계로서, 상기 제 1 키-쌍(211, 212)은 공중키(212) 및 상기 공중키(212)에 대응하는 제 1 암호화된 개인키(211)를 포함하는, 상기 액세스 단계,상기 제 1 암호화된 개인키(211)를 클라이언트 프로세서(111)에 통신하는 단계,상기 개인키(221)를 생성하기 위해 제 1 키(201)를 사용하여 상기 클라이언트 프로세서(111)에서 상기 제 1 암호화된 개인키(211)를 해독하는 단계,상기 공중키(212)에 대응하는 제 2 암호화된 개인키(231)를 생성하기 위해 제 2 키(202)를 사용하여 상기 클라이언트 프로세서(11)에서 상기 개인키(221)를 암호화하는 단계,상기 제 2 암호화된 개인키(231)를 상기 서버 프로세서(150)에 통신하는 단계, 및다른 클라이언트 프로세서(112)에 상기 제 2 암호화된 개인키(231)의 후속하는 통신을 용이하게 하기 위해, 상기 서버 프로세서(150)에서 상기 공중키(212)에 대응하는 상기 제 2 암호화된 개인키(231)를 저장하는 단계를 포함하는, 개인키(221) 보안 방법.
- 제 1 항에 있어서,상기 제 1 암호화된 개인키(211)를 상기 서버 프로세서(150)로부터 제거하는 단계를 더 포함하는, 개인키(221) 보안 방법.
- 제 1 항에 있어서,상기 제 1 암호화된 개인키(211)를 해독하는 단계는 대칭 키 암호시스템(symmetric key cryptosystem)에 기초하는, 개인키(221) 보안 방법.
- 제 1 항에 있어서,상기 제 1 암호화된 개인키(211)를 해독하는 단계는 비대칭 키 암호시스템에 기초하는, 개인키(221) 보안 방법.
- 제 1 항에 있어서상기 제 2 암호화된 개인키(231)를 암호화하는 단계는 대칭 키 암호시스템에 기초하는, 개인키(221) 보안 방법.
- 제 1 항에 있어서,상기 제 2 암호화된 개인키(231)를 암호화하는 단계는 비대칭 키 암호시스템에 기초하는, 개인키(221) 보안 방법.
- 제 1 항에 있어서,상기 제 1 키-쌍(211, 212)은 상기 서버 프로세서(150) 상의 이용가능한 키-쌍들의 리스트(260)에 저장되는, 개인키(221) 보안 방법.
- 제 1 항에 있어서,상기 제 2 키(202)를 생성하기 위해 사용자 정보를 얻는 단계를 더 포함하는, 개인키(221) 보안 방법.
- 제 8 항에 있어서,상기 사용자 정보는 생체 측정 정보(biometric information), 패스워드, 및 패스프레이즈(passphrase) 중 적어도 하나를 포함하는, 개인키(221) 보안 방법.
- 제 1 항에 있어서,상기 제 1 키(201)를 생성하기 위해 관리자 키(401)를 사용하여 상기 클라이언트 프로세서(111)에서 암호화된 제 1 키(411)를 해독하는 단계를 더 포함하는, 개인키(221) 보안 방법.
- 제 10 항에 있어서,상기 관리자 키(401)는 생체 측정 정보, 패스워드, 및 패스프레이즈 중 적어도 하나에 기초하는, 개인키(221) 보안 방법.
- 클라이언트 프로세서(111)에 있어서:서버 프로세서(150)로부터 키-쌍(211, 212)의 공중키(212)에 대응하는 제 1 암호화된 개인키(211)를 수신하는 수신기(210),상기 공중키(212)에 대응하는 개인키(221)를 생성하기 위해 제 1 키(201)에 기초하여 상기 제 1 암호화된 개인키(211)를 해독하는 해독기(220),제 2 암호화된 개인키(231)를 생성하기 위해 제 2 키(202)에 기초하여 상기 개인키(221)를 암호화하는 암호화기(230), 및다른 클라이언트 프로세서(112)에 의한 상기 제 2 암호화된 개인키(231)의 검색을 용이하게 하기 위해 상기 공중키(212)에 대응하는 상기 제 2 암호화된 개인키(231)를 상기 서버 프로세서(150)에 전송하는 전송기(240)를 포함하는, 클라이언트 프로세서(111).
- 제 12 항에 있어서,상기 제 1 키(201)를 생성하기 위해 관리자 키(401)에 기초하여 암호화된 제 1 키(411)를 해독하는 다른 해독기(420)를 더 포함하는, 클라이언트 프로세서(111).
- 제 13 항에 있어서,상기 관리자 키(401)는 생체 측정 정보, 패스워드 및 패스프레이즈 중 적어도 하나에 기초하는, 클라이언트 프로세서(111).
- 제 1 항에 있어서,상기 제 2 키(202)를 생성하기 위해 사용자 정보를 제공하는 입력 장치를 더 포함하는, 클라이언트 프로세서(111).
- 제 15 항에 있어서,상기 사용자 정보는 생체 측정 정보, 패스워드, 및 패스프레이즈 중 적어도 하나를 포함하는, 클라이언트 프로세서(111).
- 서버 프로세서(150)에 있어서,공중키(212) 및 상기 공중키(212)에 대응하는 제 1 암호화된 개인키(211)를 제공하는 저장 장치(260, 265, 465),상기 저장 장치(260, 265, 465)에 동작가능하게 결합되며, 상기 제 1 암호화된 개인키(211)를 클라이언트 프로세서(111)에 전송하는 전송기(264), 및상기 저장 장치(260, 265, 465)에 동작가능하게 결합되며, 상기 공중키(212)에 대응하는 제 2 암호화된 개인키(231)를 수신하고, 다른 클라이언트 프로세서(112)로의 상기 제 2 암호화된 개인키(231)의 전송을 용이하게 하기 위해 상기 제 2 암호화된 개인키(231)를 상기 저장 장치(260, 265, 465)에 통신하는 수신기(268)를 포함하는, 서버 프로세서(150).
- 제 17 항에 있어서,상기 전송기(264)는 또한 상기 클라이언트 프로세서(111)에서 상기 제 1 암호화된 개인키(211)의 해독을 용이하게 하기 위해, 암호화된 제 1 키(411)를 상기 클라이언트 프로세서(111)로 전송하는, 서버 프로세서(150).
- 제 17 항에 있어서,상기 저장 장치(260, 265, 465)는 다수의 공중키들 및 제 1 암호화된 개인키들(260)을 포함하며, 이들로부터 상기 공중키(212) 및 제 1 암호화된 개인키(211)가 제공되는, 서버 프로세서(150).
- 제 17 항에 있어서,상기 제 1 암호화된 개인키(211)는 마스터키에 기초하여 암호화되고,상기 저장 장치(260, 265, 465)는 또한 관리자키(401)를 사용하는 상기 마스터키의 암호화에 기초하여 암호화된 마스터키를 제공하는, 서버 프로세서(150).
- 제 20 항에 있어서,상기 저장 장치(260, 265, 465)는 다수의 관리자 식별자들 및 대응하는 암호화된 마스터키들(465)을 포함하며, 이들로부터 상기 암호화된 마스터키가 제공되는, 서버 프로세서(150).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US09/323,807 | 1999-06-02 | ||
| US09/323,807 US6694025B1 (en) | 1999-06-02 | 1999-06-02 | Method and apparatus for secure distribution of public/private key pairs |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR20010072206A KR20010072206A (ko) | 2001-07-31 |
| KR100734162B1 true KR100734162B1 (ko) | 2007-07-03 |
Family
ID=23260808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020017001434A Expired - Fee Related KR100734162B1 (ko) | 1999-06-02 | 2000-05-17 | 공중/개인키 쌍들의 안전한 분배 방법 및 장치 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US6694025B1 (ko) |
| EP (1) | EP1101317B1 (ko) |
| JP (1) | JP2003501877A (ko) |
| KR (1) | KR100734162B1 (ko) |
| CN (1) | CN1307819C (ko) |
| DE (1) | DE60029722T2 (ko) |
| WO (1) | WO2000074297A2 (ko) |
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| EP1101317A2 (en) | 2001-05-23 |
| JP2003501877A (ja) | 2003-01-14 |
| CN1327662A (zh) | 2001-12-19 |
| WO2000074297A3 (en) | 2001-03-01 |
| EP1101317B1 (en) | 2006-08-02 |
| DE60029722T2 (de) | 2007-10-18 |
| DE60029722D1 (de) | 2006-09-14 |
| US6694025B1 (en) | 2004-02-17 |
| WO2000074297A2 (en) | 2000-12-07 |
| KR20010072206A (ko) | 2001-07-31 |
| CN1307819C (zh) | 2007-03-28 |
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