GetOctString

Converts a positive Big Number into octet String.

Syntax

IppStatus ippsGetOctString_BN(const Ipp8u* pOctStr, int strLen, const IppsBigNumState* pBN);

pOctStr	Pointer to the input octet string.
strLen	Octet string length in bytes.
pBN	Pointer to the context of the input Big Number.

The function is declared in the ippcp.h file. This function converts a positive Big Number into the octet string.

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.
ippStsLengthErr	Indicates an error condition if specified pOctStr is insufficient in length.
ippStsRangeErr	Indicates an error condition if Big Number is negative.

void Type_BN(const char* pMsg, const IppsBigNumState* pBN){

   // size of Big Number

   int size;

   ippsGetSize_BN(pBN, &size);

   // extract Big Number value and convert it to the string presentation

   Ipp8u* bnValue = new Ipp8u [size*4];

   ippsGetOctString_BN(bnValue, size*4, pBN);

   // type header

   if(pMsg)

      cout <<pMsg;

   // type value

   for(int n=0; n<size*4; n++)

      cout<<hex <<(int)bnValue[n];

   cout <<endl;

   delete [] bnValue;