```rust impl ECScalar<SK> for Secp256k1Scalar { fn new_random() -> Self { let mut arr = [0u8; 32]; thread_rng().fill(&mut arr[..]); Self { purpose: "random", fe: SK::from_slice(&arr[0..arr.len()]).unwrap(), } } // ... } ``` This is not enough, a valid secret key should be [1, Group order), and group order is `fffffffffffffffffffffffffffffffebaaedce6af48a03bbfd25e8cd0364141`