Correct gen_rand_key docs
@@ -31,7 +31,7 @@ use constant_time_eq::constant_time_eq;
#[inline(never)]
/// Return a random byte vector of a given length. This uses the [rand](https://crates.io/crates/rand) crate,
/// which means that random data is read from the OS source /dev/urandom or CryptGenRandom().
-/// Length must be greater than 1.
+/// Length must be >= 1.
pub fn gen_rand_key(len: usize) -> Result<Vec<u8>, errors::UnknownCryptoError> {
if len < 1 {
