Secure Ransomware Development 101 ~ How Do malware researchers break your ransomware via faulted compiler optimization

so if you haven't seen part 1 you must go and check it out , so you can understand how does optimization influence code and what type of security issues does it bring to life . lets dive strait into a simple example of a text encryption that is flawed not by the code , but the compiler optimization . #include <stdio.h> #include <string.h> #include <stdlib.h> void _FALWEDcleanup (char *ptr, size_t len) {if (ptr) { memset(ptr, 0, len); free(ptr);}} void _CRYPTR (char *data, const char *key) { size_t inputLength = strlen(data); size_t keyLen = strlen(key); for (size_t i = 0; i < inputLength; i++) { data[i] = data[i] ^ key[i % keyLen]; } } int main(void) { size_t bufferSize = 100; char *input = malloc(bufferSize); if (input == NULL) { return 1; } char *ourKEY = malloc(20); strcpy(ourKEY, "i_love_you_000x"); printf("enter some text to encrypt : "); if (fgets(input, (int)bufferSize, stdin)) { input[strcspn(input, "\n")] = 0; size_t len = strlen(input); _CRYPTR(input, our