Developer Guide and Reference for Intel® Integrated Performance Primitives Cryptography
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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) pubKeyBprivateKeyA(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.  |