GFPMontDecode

Converts an element of the GF(p) field represented in the Montgomery residue number system to the regular GF(p) element.

Syntax

IppStatus ippsGFPMontDecode(const IppsGFPElement *pGFpElementA, IppsGFPElement *pGFpElementR, IppsGFPState *pGFp);

Parameters

pGFpElementA	Pointer to the context of the given element of the GF(`p`) field.
pGFpElementR	Pointer to the context of the resulting element of the GF(`p`) field.
pGFp	Pointer to the context of the GF(`p`) field.

Description

This function is declared in the ippcp.h file. The function converts the element of the GF(p) field represented in the Montgomery residue number system to the regular GF(p) element. The following pseudocode represents this operation: R = MontMul(A, 1) (here MontMul denotes the Montgomery multiplication).

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.
ippContextMatchErr	Indicates an error condition if any of the IppsGFPState or IppsGFPElement context parameters does not match the operation.