Visible to Intel only — GUID: GUID-B837FC80-F11E-4EEC-A11E-0B598F861F13
Visible to Intel only — GUID: GUID-B837FC80-F11E-4EEC-A11E-0B598F861F13
MontExp
Computes Montgomery exponentiation.
Syntax
IppStatus ippsMontExp(const IppsBigNumState *pA, const IppsBigNumState *pE, IppsMontState *m, IppsBigNumState *pR);
Include Files
ippcp.h
Parameters
pA |
Pointer to the big number Montgomery integer within the range of [0, m- 1]. |
pE |
Pointer to the big number exponent. |
m |
Modulus. |
pR |
Pointer to the montgomery exponentiation result. |
Description
The function computes Montgomery exponentiation with the exponent specified by the input positive integer big number to the given positive integer big number of the Montgomery form with respect to the modulus m.
The following pseudocode represents this function:
pR←pApER-(pE-1)mod m.
Return Values
ippStsNoErr |
Indicates no error. Any other value indicates an error or warning. |
ippStsBadArgErr |
Indicates an error condition if pA or pE is a negative integer. |
ippStsNullPtrErr |
Indicates an error condition if any of the specified pointers is NULL. |
ippStsScaleRangeErr |
Indicates an error condition if pA or pE is more than m. |
ippStsOutOfRangeErr |
Indicates an error condition if IppsBigNumState*pRis larger than IppsMontState*m. |
ippStsContextMatchErr |
Indicates an error condition if any of the context parameters does not match the operation. |