Any shortcut to generate a 16 byte random data as Initialisation Vector for AES128 CBC method?

Question

Is there any easy way to generate this kind random data or string? Like an existing function?

Accepted Answer

You can use `SecRandomCopyBytes` from Security framework.

This function reads from `/dev/random` to obtain an array of cryptographically-secure random bytes.

```
uint8_t vector[16];
SecRandomCopyBytes(kSecRandomDefault, 16, vector);
```

Solution