MontGetSize
MontGetSize
Gets the size of the
IppsMontState
context.Syntax
IppStatus ippsMontGetSize(IppsExpMethod
method
, int
length
, int *
pSize
);
Include Files
ippcp.h
Parameters
- method
- Selected exponential method.
- length
- Data field length for the modulus inIpp32uchunks.
- pSize
- Pointer to the size of the buffer required for initialization.
Description
The function specifies the buffer size required to define the structured working buffer of the context
IppsMontState
to store the modulus and perform operations using various Montgomery modulus schemes. For security reasons, the length of the modulus is restricted to 16 kilobits.
The function returns the required buffer size based on the selected exponential method. The binary method helps to significantly reduce the buffer size, while the sliding windows method results in enhanced performance.
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 isNULL.
- ippStsLengthErr
- Indicates an error condition iflengthis less than or equal to 0 or greater than 512.