Developer Reference

Contents

DLPPublicKey

Computes a public key from the given private key of the DL-based cryptosystem over GF(p).

Syntax

IppStatus ippsDLPPublicKey(const IppsBigNumState*
pPrivate
, IppsBigNumState*
pPublic
, IppsDLPState*
pCtx
);
Include Files
ippcp.h
Parameters
pPrivate
Pointer to the input private key
privKey
.
pPublic
Pointer to the output public key
pubKey
.
pCtx
Pointer to the cryptosystem context.
Description
The function computes a public key
pubKey
of the DL-based cryptosystem.
Return Values
ippStsNoErr
Indicates no error. Any other value indicates an error or warning.
ippStsNullPtrErr
Indicates an error condition if any of the specified pointers is
NULL
.
ippStsContextMatchErr
Indicates an error condition if the context parameter does not match the operation.
ippStsIncompleteContextErr
Indicates an error condition if the cryptosystem context has not been properly set up.
ippStsInvalidPrivateKey
Indicates an error condition if the
privKey
has an illegal value.
ippStsRangeErr
Indicates an error condition if Big Number specified by
pPublic
is too small for the DL public key.

Product and Performance Information

1

Intel's compilers may or may not optimize to the same degree for non-Intel microprocessors for optimizations that are not unique to Intel microprocessors. These optimizations include SSE2, SSE3, and SSSE3 instruction sets and other optimizations. Intel does not guarantee the availability, functionality, or effectiveness of any optimization on microprocessors not manufactured by Intel. Microprocessor-dependent optimizations in this product are intended for use with Intel microprocessors. Certain optimizations not specific to Intel microarchitecture are reserved for Intel microprocessors. Please refer to the applicable product User and Reference Guides for more information regarding the specific instruction sets covered by this notice.

Notice revision #20110804