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Getting Started with the Contivity Extranet Switch 4500
2-12
Hardware Accelerator Encryption Card
The Nortel Networks Hardware Accelerator Encryption card is an encryption,
compression, and authentication processor card with a PCI interface. It provides
high-speed processing of the compute-intensive algorithms supported by today’s
standard communications protocols. The card has a PCI revision 2.1-compliant
interface, and contains onboard memory to store context information for all three
engines.
This card adds high-speed encryption processing into a hardware system. All
three processing engines on the card operate in parallel, increasing overall
processing performance and reducing bus bandwidth issues. The Nortel Networks
Hardware Accelerator Encryption card benefits include:
• PCI interface allows for easy integration into a system with PCI card slots
• Onboard memory stores state (key) information for all three processing
engines
• Simultaneous multiple session support -- can store key information for up
to 2048 sessions
Algorithms Supported:
• Encryption: DES, 3DES, RC4
• Encryption Modes: ECB, CBC, CFB, and OFB
• Compression: LZS and MPPC
• Authentication: SHA-1 and MD5
Protocols Supported:
• IPSec (ESP): DES, 3DES, SHA-1, MD5, LZS
• IPSec (AH): SHA-1, MD5, LZS
• PPTP: RC4, MPPC
• SSL: DES, 3DES, RC4
• PP: CCP with LZS, ECP with DES, 3DES
• L2TP: With IPSec encapsulation