EXC_BAD_ACCESS with memset

Question

Getting error Thread 1: EXC_BAD_ACCESS (code=1, address=0x0)

unsigned char *nkey;

memset(nkey, 0x00, 256); // error is here

I am setting nkey with a sprintf then after I use it as a parameter.

There are no compile time errors, but when running it shows that. I am using Xcode.

Answer 1

首先，您需要为nkey分配内存，例如

unsigned char *nkey = new unsigned char[256]; // block of 256 uchars