DLPSharedSecretDH

Computes a shared field element by using the Diffie-Hellman scheme.

Syntax

IppStatus ippsDLPSharedSecretDH(const IppsBigNumState* pPrivateA, const IppsBigNumState* pPublicB, IppsBigNumState* pShare, IppsDLPState* pCtx);

Include Files

ippcp.h

Parameters

pPrivateA	Pointer to your own private key privateKeyA.
pPublicB	Pointer to the public key pubKeyB belonging to the other party.
pShare	Pointer to the shared secret element Share.
pCtx	Pointer to the cryptosystem context.

Description

The function computes a shared secret element FG(p) pubKeyB^privateKeyA(modp).

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.
ippStsRangeErr	Indicates an error condition if Share does not have enough space.