Intel EP80579 Benutzerhandbuch

Intel

®

 EP80579 Software for Security Applications on Intel

®

 QuickAssist Technology

PG

August 2009

74

Order Number: 320183-004US

2. Allocate memory for the operation 
3. Populate the appropriate Large Number operation data structure, see the API 

manual

• Fill in the Flat Buffers; pointer to data and length

4. Call the Large Number operation perform API 
5. Completion of the operation, see 

The EP80579 security software release package version 1.0.3 does not support 

OpenBSD/FreeBSD Cryptographic Framework (OCF), OCF-Linux, or any open source 

projects such as Openswan*, OpenSSL*, or Racoon*. If your application requires OCF, 

you must use security software package version 1.0.2 which includes shim software to 

enable OCF support.

A number of cryptographic frameworks exist within the industry and/or the open source 

community. These frameworks typically provide software implementations of various 

cryptographic operations, and allow vendors of cryptographic accelerators to “plug in” 

their hardware-based implementation underneath. One such cryptographic framework 

is the OpenBSD/FreeBSD Cryptographic Framework (OCF). OCF is a service 

virtualization layer that facilitates asynchronous access to cryptographic hardware 

accelerators. OCF-Linux is a port of this framework to Linux. 

A driver has been created which enables the Lookaside Cryptographic features to be 

accessed via OCF. See the 

 for your operating system for more 

detailed information.

For customers who already program to the OCF API, this “shim” offers a simple way to 

utilize the Cryptographic API without changing application code. Programming against a 

portable API such as OCF protects your software investment, allowing your application 

to run on any processor supported by OCF, while still taking advantage of the lookaside 

cryptographic acceleration services when running on Intel

®

 EP80579 Integrated 

Processor or future silicon supporting the Intel

®

 QuickAssist Technology.

Further information on OCF-Linux can be found here: 

The EP80579 security software release package version 1.0.3 does not support 

OpenBSD/FreeBSD Cryptographic Framework (OCF), OCF-Linux, or any open source 

projects such as Openswan*, OpenSSL*, or Racoon*. If your application requires OCF, 

you must use security software package version 1.0.2 which includes shim software to 

enable OCF support.

Cryptographic protocols, such as IPSec/IKE or SSL, can consume significant computing 

cycles executing cryptographic operations such as:

• encryption/decryption to ensure confidentiality
• message digests for authentication
• modular exponentiation for key exchange via public key cryptography

These operations can be very compute-intensive, so accelerating these by off-loading 

the processing from the main processor core, can allow higher throughput or free up 

cycles for other, higher-value applications.