C++ XOR two strings.

I am trying to XOR two strings

00112233445566778899AABBCCDDEEFFAABB060606060606

and

4ca00fd6dbf1fb284ca00fd6dbf1fb284ca00fd6dbf1fb28

my program is giving me: SPTWPVSPT[X q'&t'!"u#'t~u"#rPTTTVVT as a result

However, when i go to http://xor.pw/? and input the two hexadecimal strings in I get the result: 4cb12de59fa49d5fc439a56d172c15d7e61b09d0ddf7fd2e

what am I doing wrong in my program below?

// plaintext value here string pthex = "00112233445566778899AABBCCDDEEFFAABB"; // IV value here string sHex = "4ca00fd6dbf1fb28"; string PaddedPlainText = pthex + "060606060606"; //added the pad //cout<

int PPTextLength = PaddedPlainText.length(); // length of plaintext int BlockCounter = (PPTextLength / 16); // number of blocks to process cout<<"Pa: "<

string XORval; string vXOR;

for (int i=1; i<=BlockCounter; i++) { cout<<"I is: "<< i< 1) for (int j =((i*16)-16); j < (((i)*16));j++) { // cout<<"the value of i: "<