Remove unsafe function call from GetRandom

src/main.rs

@@ -74,26 +74,18 @@ fn attest(public_key: Option<ByteBuf>, user_data: Option<ByteBuf>, nonce: Option
     nsm_exit(nsm_fd);
 }
 
-unsafe fn get_random(byte_length:&u16) {
+fn get_random(byte_length:&u16) {
     if byte_length < &0 {
         return;
     }
-
-    let buf_len: &mut usize = &mut 0;
-
-    let mut buf = vec![0; *byte_length as usize];
-    let buf_ptr = buf.as_mut_ptr();
-    *buf_len = buf.len();
 
     let nsm_fd = nsm_init();
     let request = Request::GetRandom {};
     let response = nsm_process_request(nsm_fd, request);
 
     match response {
         Response::GetRandom { random } => {
-            *buf_len = std::cmp::min(*buf_len, random.len());
-            std::ptr::copy_nonoverlapping(random.as_ptr(), buf_ptr, *buf_len);
-            print!("{}", base64::encode(buf));
+            print!("{}", base64::encode(random));
         },
         Response::Error(err) => {
             eprintln!("{:?}", err);
@@ -139,9 +131,7 @@ fn main() {
                 std::process::exit(1)
             }
 
-            unsafe {
-                get_random(length);
-            }
+            get_random(length);
         }
     }
 }