CA2536605A1 - Method and apparatus of communicating security/encryption information to a physical layer transceiver - Google Patents

Method and apparatus of communicating security/encryption information to a physical layer transceiver Download PDF

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Publication number
CA2536605A1
CA2536605A1 CA002536605A CA2536605A CA2536605A1 CA 2536605 A1 CA2536605 A1 CA 2536605A1 CA 002536605 A CA002536605 A CA 002536605A CA 2536605 A CA2536605 A CA 2536605A CA 2536605 A1 CA2536605 A1 CA 2536605A1
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CA
Canada
Prior art keywords
phy
crypto
interface
coupled
mdio
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002536605A
Other languages
French (fr)
Other versions
CA2536605C (en
Inventor
Li-Jau Yang
Daniel C. Biederman
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Cisco Technology Inc
Original Assignee
Cisco Technology, Inc.
Li-Jau Yang
Daniel C. Biederman
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Cisco Technology, Inc., Li-Jau Yang, Daniel C. Biederman filed Critical Cisco Technology, Inc.
Publication of CA2536605A1 publication Critical patent/CA2536605A1/en
Application granted granted Critical
Publication of CA2536605C publication Critical patent/CA2536605C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • 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
    • H04L63/16—Implementing security features at a particular protocol layer
    • H04L63/162—Implementing security features at a particular protocol layer at the data link layer
    • 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
    • H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
    • H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/03—Protocol definition or specification 
    • 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
    • H04L2209/24—Key scheduling, i.e. generating round keys or sub-keys for block encryption

Abstract

An apparatus for providing link layer security in a Physical Layer Transceiver (PHY) (Fig. 3, 305) is disclosed. In one embodiment, the apparatus may comprise analog circuitry (Fig. 3, 330) configured to interface with a data transmission medium, digital circuitry (Fig. 3, 320) configured to interface with a Media Access Controller (MAC) (Fig. 3, 310); and a crypto engine (Fig.
3, 340) coupled to the digital circuitry. Single interface and multiple interface schemes are provided to control both PHY and crypto functions.
Embodiments are disclosed where the PHY controls the crypto device, and where the crypto device controls the PHY.

Claims (20)

1. An apparatus for providing link layer security in a Physical Layer Transceiver (PHY) comprising:
analog circuitry configured to transmit to, and receive data from, a data transmission medium;
digital circuitry coupled to said analog circuitry, said digital circuitry configured to transmit to, and receive from, a Media Access Controller (MAC);
a PHY communications module coupled to said analog and digital circuitry;
a crypto engine coupled to said digital circuitry;
a crypto communications module coupled to said crypto engine; and said PHY communications module being operatively coupled to said crypto communications module.
2. The apparatus of claim 1, wherein said PHY communications module is configured to provide connectivity through a MDIO/MDC interface, and said PHY
controls the operation of said crypto device.
3. The apparatus of claim 1, wherein:
said PHY communications module is configured to provide connectivity through a MDIO/MDC interface;
said crypto communications module is configured to provide connectivity through an interface other than a MDIO/MDC interface.
4. The apparatus of claim 1, wherein:
said PHY communications module is configured to provide connectivity through a MDIO/MDC interface; and said crypto communications module is coupled to said MDIO/MDC interface.
5. The apparatus of claim 1, further comprising a master communications module coupled between said PHY communications module and said crypto communications module.
6. The apparatus of claim 1, wherein said crypto communications module is configured to provide connectivity through a MDIO/MDC interface, and said crypto device controls the operation of said PHY.
7. The apparatus of claim 1, wherein said PHY communications module is configured to provide connectivity through a serial wire interface.
8. The apparatus of claim 7, wherein said serial wire interface is configured to communicate with a plurality of devices.
9. The apparatus of claim 8, wherein said plurality of devices include at least one device that communicates at the PHY level, and at least one device that performs security functions.
10. The apparatus of claim 7, wherein said serial wire interface communicates with at least one device that performs both PHY and Security functions.
11. An apparatus for providing link layer security in a Physical Layer Transceiver (PHY) comprising:
analog circuitry means for providing connectivity to a data transmission medium;
digital circuitry means coupled to said analog circuitry means, said digital circuitry providing connectivity to a Media Access Controller (MAC);
PHY communications means coupled to said analog and digital circuitry means;
crypto engine means coupled to said digital circuitry means;
crypto communications means coupled to said crypto engine means; and said PHY communications means being operatively coupled to said crypto communications module.
12. The apparatus of claim 11, wherein said PHY communications means being configured for providing connectivity through a MDIO/MDC interface, and said PHY controls the operation of said crypto device.
13. The apparatus of claim 11, wherein:
PHY communications means being configured for providing connectivity through a MDIO/MDC interface;
said crypto communications means being configured for providing connectivity through an interface other than a MDIO/MDC interface.
14. The apparatus of claim 11, wherein:
said PHY communications means is configured to provide connectivity through a MDIO/MDC interface; and said crypto communications means is coupled to said MDIO/MDC interface.
15. The apparatus of claim 11, further comprising master communications means coupled between said PHY communications means and said crypto communications means.
16. The apparatus of claim 11, wherein said crypto communications means is configured to provide connectivity through a MDIO/MDC interface, and said crypto device means controls the operation of said PHY.
17. The apparatus of claim 11, wherein said PHY communications means is configured to provide connectivity through serial wire interface means.
18. The apparatus of claim 17, wherein said serial wire interface means is configured to communicate with a plurality of devices.
19. The apparatus of claim 18, wherein said plurality of devices include at least one device that communicates at the PHY level, and at least one device that performs security functions.
20. The apparatus of claim 17, wherein said serial wire interface communicates with at least one device that performs both PHY and Security functions.
CA2536605A 2003-09-30 2004-09-30 Method and apparatus of communicating security/encryption information to a physical layer transceiver Expired - Fee Related CA2536605C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US10/676,384 US7711948B2 (en) 2003-09-30 2003-09-30 Method and apparatus of communicating security/encryption information to a physical layer transceiver
US10/676,384 2003-09-30
PCT/US2004/032691 WO2005034412A2 (en) 2003-09-30 2004-09-30 Method and apparatus of communicating security/encryption information to a physical layer transceiver

Publications (2)

Publication Number Publication Date
CA2536605A1 true CA2536605A1 (en) 2005-04-14
CA2536605C CA2536605C (en) 2011-05-24

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Family Applications (1)

Application Number Title Priority Date Filing Date
CA2536605A Expired - Fee Related CA2536605C (en) 2003-09-30 2004-09-30 Method and apparatus of communicating security/encryption information to a physical layer transceiver

Country Status (5)

Country Link
US (3) US7711948B2 (en)
EP (1) EP1668816B1 (en)
CN (1) CN1883154B (en)
CA (1) CA2536605C (en)
WO (1) WO2005034412A2 (en)

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Also Published As

Publication number Publication date
CN1883154B (en) 2010-08-25
US20050071628A1 (en) 2005-03-31
EP1668816A4 (en) 2010-11-17
CA2536605C (en) 2011-05-24
US20100191956A1 (en) 2010-07-29
CN1883154A (en) 2006-12-20
US8843735B2 (en) 2014-09-23
EP1668816A2 (en) 2006-06-14
EP1668816B1 (en) 2013-03-06
WO2005034412A2 (en) 2005-04-14
US7711948B2 (en) 2010-05-04
US20160337121A9 (en) 2016-11-17
US20140362988A1 (en) 2014-12-11
WO2005034412A3 (en) 2005-12-29

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Effective date: 20181001