KR101367038B1 - 키 교환 시스템 및 시스템 조작 방법 - Google Patents
키 교환 시스템 및 시스템 조작 방법 Download PDFInfo
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- KR101367038B1 KR101367038B1 KR1020127000473A KR20127000473A KR101367038B1 KR 101367038 B1 KR101367038 B1 KR 101367038B1 KR 1020127000473 A KR1020127000473 A KR 1020127000473A KR 20127000473 A KR20127000473 A KR 20127000473A KR 101367038 B1 KR101367038 B1 KR 101367038B1
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- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000004891 communication Methods 0.000 claims description 15
- 230000011664 signaling Effects 0.000 claims description 10
- 230000007774 longterm Effects 0.000 claims description 3
- 238000009795 derivation Methods 0.000 claims 1
- 239000003795 chemical substances by application Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000000977 initiatory effect Effects 0.000 description 4
- 230000004044 response Effects 0.000 description 4
- 238000007792 addition Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000000872 buffer Substances 0.000 description 1
- 230000001010 compromised effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/06—Network architectures or network communication protocols for network security for supporting key management in a packet data network
- H04L63/061—Network architectures or network communication protocols for network security for supporting key management in a packet data network for key exchange, e.g. in peer-to-peer networks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/18—Network architectures or network communication protocols for network security using different networks or channels, e.g. using out of band channels
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/10—Architectures or entities
- H04L65/1045—Proxies, e.g. for session initiation protocol [SIP]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/1066—Session management
- H04L65/1101—Session protocols
- H04L65/1104—Session initiation protocol [SIP]
-
- 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
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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
- H04L2209/00—Additional information or applications relating to cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
- H04L2209/76—Proxy, i.e. using intermediary entity to perform cryptographic operations
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- General Engineering & Computer Science (AREA)
- Computing Systems (AREA)
- Computer Hardware Design (AREA)
- Multimedia (AREA)
- Business, Economics & Management (AREA)
- General Business, Economics & Management (AREA)
- Telephonic Communication Services (AREA)
- Mobile Radio Communication Systems (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
Description
도 2는 도 1의 SIP를 이용하는 세션 구조(100)와 같은 결합 프로토콜에 사용에 적용되는 개선된 키 관리 시스템의 일례의 배치(200)를 도시하는 도면이다.
도 3은 본 발명의 원리에 따라 구성된 시스템 일례의 배치(300)를 도시하는 도면이다.
도 4는 본 발명의 원리에 따라 구성된 시스템의 다른 일례의 배치(400)를 도시하는 도면이다.
Claims (10)
- SIP의 효율적인 키 교환 시스템에 있어서,
신호를 전송하도록 적용 및 구성되어 있는 제 1 단말과,
신호를 수신하도록 적용 및 구성되어있는 제 2 단말과,
신호를 수신하여 랜덤 임시어(random nonce) r을 상기 제 1 단말로 전송하도록 적용 및 구성되어 있는 대체 단말을 포함하되,
시그널링 계층을 통해 상기 제 1 단말로부터 상기 제 2 단말로 제 1 키 교환어 k가 선택적으로 전송되고,
상기 제 2 단말이 상기 제 1 키 교환어 k를 수신하면, 미디어 계층을 통해 상기 대체 단말로부터 상기 제 1 단말로 랜덤 임시어 r이 선택적으로 전송되는
교환 시스템.
- 제 1 항에 있어서,
k 및 r로부터 유도된 세션 키는 또한 sk=Fk(r)로 정의되고, 여기서 F는 의사랜덤 함수(pseudorandom function)인
키 교환 시스템.
- 제 1 항에 있어서,
상기 제 1 단말 및 상기 제 2 단말은 롱 텀(long term) PSK를 교환하고, 후속 SIP 세션들에서 입증할 수 있게 안전하고 효율적인 키 교환을 수행하는
키 교환 시스템.
- 제 1 항에 있어서,
상기 제 1 단말이 상기 랜덤 임시어 r을 수신한 경우, 키 유도가 완료되는
키 교환 시스템. - 적어도 하나의 프록시 서버를 통해 적어도 하나의 제 1 장치로부터 적어도 하나의 제 2 장치로의 비용 효율적인 안전한 키 교환을 제공하는 시스템에 있어서,
상기 적어도 하나의 프록시 서버를 통한 상기 적어도 하나의 제 1 장치로부터 상기 적어도 하나의 제 2 장치로의 제 1 키 교환 수단과,
인터넷의 미디어 스트림을 통한 상기 적어도 하나의 제 2 장치로부터 상기 적어도 하나의 제 1 장치로의 제 2 키 교환 수단을 포함하는
키 교환 제공 시스템.
- 시스템을 조작하는 방법에 있어서,
제 1 인터넷 장치 및 제 2 인터넷 장치에 대한 라우팅 식별자를 제공하는 단계와,
랜덤 키를 발생하는 단계와,
상기 제 2 인터넷 장치에 대한 라우팅 식별자를 이용하여 프록시 서버를 통해 상기 제 1 인터넷 장치로부터 상기 제 2 인터넷 장치로 상기 랜덤 키를 전송하는 단계와,
상기 제 2 인터넷 장치를 이용하여 제 2 키를 생성하는 단계와,
인터넷의 미디어 계층을 이용하여 상기 제 2 인터넷 장치로부터 상기 제 1 인터넷 장치로 상기 제 2 키를 전송하는 단계를 포함하는
시스템 조작 방법.
- 제 6 항에 있어서,
상기 시스템은 효율적 키 교환물을 생성하고, 상기 랜덤 키는 또한 키 k에 의해 정의되고, 상기 제 2 키는 또한 임시어 r에 의해 정의되고, 세션 키는 또한 sk=Fk(r)에 의해 정의되고, 여기서 F는 의사랜덤 함수인
시스템 조작 방법.
- 제 7 항에 있어서,
상기 임시어 r은 평문(plaintext)을 이용하여 상기 제 2 인터넷 장치로부터 상기 제 1 인터넷 장치로 전송되는
시스템 조작 방법.
- 통신 네트워크의 키 교환 시스템에 있어서,
제 1 전자 장치로부터 질의를 갖는 적어도 하나의 참가자를 식별하여 통지하기 위한 시그널링 계층 키 k와, 상기 제 1 전자 장치로 데이터를 전송하기 위한 미디어 계층 임시어 r을 포함하는 키 세션과,
상기 미디어 계층 임시어 r에 대한 데이터를 생성하도록 적용 및 구성된 제 2 전자 장치를 포함하는
통신 네트워크의 키 교환 시스템.
- 제 9 항에 있어서,
상기 제 1 전자 장치 내에 PSK가 저장되고, 상기 제 1 전자 장치는 반복 호가 개시되는 경우, 재 타겟팅(re-targeting)이 발생하는지를 결정하는
통신 네트워크의 키 교환 시스템.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US12/459,717 | 2009-07-07 | ||
| US12/459,717 US9106628B2 (en) | 2009-07-07 | 2009-07-07 | Efficient key management system and method |
| PCT/US2010/039647 WO2011005569A2 (en) | 2009-07-07 | 2010-06-23 | Efficient key management system and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR20120027485A KR20120027485A (ko) | 2012-03-21 |
| KR101367038B1 true KR101367038B1 (ko) | 2014-02-24 |
Family
ID=43428357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020127000473A Active KR101367038B1 (ko) | 2009-07-07 | 2010-06-23 | 키 교환 시스템 및 시스템 조작 방법 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US9106628B2 (ko) |
| EP (1) | EP2452477B1 (ko) |
| JP (1) | JP2012533218A (ko) |
| KR (1) | KR101367038B1 (ko) |
| CN (1) | CN102474509B (ko) |
| WO (1) | WO2011005569A2 (ko) |
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| US10841080B2 (en) | 2018-03-20 | 2020-11-17 | International Business Machines Corporation | Oblivious pseudorandom function in a key management system |
| US10887088B2 (en) | 2018-03-20 | 2021-01-05 | International Business Machines Corporation | Virtualizing a key hierarchy using a partially-oblivious pseudorandom function (P-OPRF) |
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-
2010
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- 2010-06-23 EP EP10727633.9A patent/EP2452477B1/en active Active
- 2010-06-23 KR KR1020127000473A patent/KR101367038B1/ko active Active
- 2010-06-23 JP JP2012519565A patent/JP2012533218A/ja active Pending
- 2010-06-23 CN CN201080030454.3A patent/CN102474509B/zh active Active
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Also Published As
| Publication number | Publication date |
|---|---|
| JP2012533218A (ja) | 2012-12-20 |
| KR20120027485A (ko) | 2012-03-21 |
| US20110010549A1 (en) | 2011-01-13 |
| WO2011005569A2 (en) | 2011-01-13 |
| EP2452477A2 (en) | 2012-05-16 |
| US9106628B2 (en) | 2015-08-11 |
| CN102474509B (zh) | 2016-05-11 |
| WO2011005569A3 (en) | 2011-03-24 |
| EP2452477B1 (en) | 2018-12-26 |
| CN102474509A (zh) | 2012-05-23 |
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