Developer Guide and Reference for Intel® Integrated Performance Primitives Cryptography
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Visible to Intel only — GUID: GUID-E2171754-3272-4ED6-AC94-B975C85A7BE2
Visible to Intel only — GUID: GUID-E2171754-3272-4ED6-AC94-B975C85A7BE2
Support Functions
There are several general purpose functions that simplify using the library and report information on how it is working:
GetCpuFeatures/ SetCpuFeatures/GetEnabledCpuFeatures
GetStatusString
GetLibVersion
GetCpuFeatures/ SetCpuFeatures/GetEnabledCpuFeatures
In some cases like debugging and performance analysis, you may want to get the data on the difference between various processor-specific codes on the same machine. Use the ippcpSetCpuFeatures function for this. This function sets the dispatcher to use the processor-specific code according to the specified set of CPU features. You can obtain features supported by CPU using ippcpGetCpuFeatures and obtain features supported by the currently dispatched Intel® Integrated Performance Primitives Cryptography (Intel® IPP Cryptography) code using ippcpGetEnabledCpuFeatures. If you need to enable support of some CPU features without querying the system (without using the CPUID instruction call), you must set the ippCPUID_NOCHECK bit for ippcpSetCpuFeatures, otherwise, only the features supported by the current CPU are set.
The ippcpGetCpuFeatures, ippcpGetEnabledCpuFeatures, and ippcpSetCpuFeatures functions are a part of the ippCP library.
GetStatusString
The ippcpGetStatusString function decodes the numeric status return value of Intel® IPP Cryptography functions and converts them to a human-readable text:
Ipp64u mask; status = ippcpGetCpuFeatures(&mask); if( status != ippStsNoErr ) { printf("ippcpGetCpuFeatures() Error:\n"); printf("%s\n", ippcpGetStatusString(status) ); return -1; }
The ippcpGetStatusString function is a part of the ippCP library.
GetLibVersion
The GetLibVersion function returns information about the library layer in use from the dispatcher. The code snippet below demonstrates the usage of the ippcpGetLibVersion:
const IppLibraryVersion* lib = ippcpGetLibVersion(); printf("%s %s %d.%d.%d.%d\n", lib->Name, lib->Version, lib->major, lib->minor, lib->majorBuild, lib->build);
For more information about the Intel IPP Cryptography functions see the Developer Reference for Intel® Integrated Performance Primitives Cryptography.