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Security Software—Using the Intel
®
QuickAssist Technology Cryptographic API
Intel
®
EP80579 Software for Security Applications on Intel
®
QuickAssist Technology
PG August 2009
58 Order Number: 320183-004US
12.0 Using the Intel
®
QuickAssist Technology
Cryptographic API
The Intel
®
QuickAssist Technology Cryptographic API for the Lookaside Model is
described in the API user reference document [CRYPTO_API]. Most of the API functions
support both asynchronous and synchronous invocation, except for those used to
initialize and remove sessions and for getting statistics which support synchronous
invocation only. This chapter provides a brief overview of the API.
12.1 What’s New in this Chapter
• Section 12.9 and Section 12.10: New Note to explain shim support
12.2 Intel
®
QuickAssist Technology Cryptographic API
The API is documented in the [CRYPTO_API] document. The API can be split into three
broad areas. These are as follows:
• Common: The cpa.h, cpa_cy_common.h and icp_lac_cfg.h files define common
API, enums and so on, which both the symmetric and asymmetric APIs use.
• Instance Management: The cpa_cy_im.h file defines the functions for managing
instances.
• Symmetric: The cpa_cy_sym.h file contains the symmetric API for hashing,
cipher, algorithm chaining and authenticated encryption. The cpa_cy_key.h file
Table 13. Cryptographic Common Interface Summary (icp_lac_cfg.h)
Method Description
icp_AsdCfgLacInit
Initialize the Cryptographic Service setting up all static data
tables.
icp_AsdCfgLacShutdown
Shutdown the Cryptographic Service, therefore cleaning up all
resources owned by the module
icp_AsdCfgLacStart
Start the Cryptographic services, it is assumed at this point
Cryptographic has been initialized.
icp_AsdCfgLacStop Stop the Cryptographic services.
Note: These APIs are called by the ASD component to ensure correct initialization/shutdown procedures.
Table 14. Cryptographic Instance Management Summary (cpa_cy_im.h)
Method Description
cpaCyStartInstance
This function will initialize and start the Cryptographic
component.
cpaCyStopInstance
This function will stop the Cryptographic component and free all
system resources associated with it.