Removed 'lazy_static' dependency.

Cargo.toml

@@ -23,7 +23,6 @@ byteorder = "1.2.7"
 errno = "0.2.4"
 failure = "0.1.5"
 hex_fmt = "0.3.0"
-lazy_static = "1.1.0"
 log = "0.4.6"
 memsec = "0.5.4"
 pairing = { version = "0.14.2", features = ["u128-support"] }

src/lib.rs

@@ -327,9 +327,10 @@ impl fmt::Debug for SecretKey {
 
 impl ContainsSecret for SecretKey {
     fn secret_memory(&self) -> MemRange {
-        let ptr = &*self.0 as *const Fr as *mut u8;
-        let n_bytes = *FR_SIZE;
-        MemRange { ptr, n_bytes }
+        MemRange {
+            ptr: &*self.0 as *const Fr as *mut u8,
+            n_bytes: FR_SIZE,
+        }
     }
 }
 

src/secret.rs

@@ -4,19 +4,15 @@
 use std::mem::{size_of, size_of_val};
 use std::ops::{Deref, DerefMut};
 
-use lazy_static::lazy_static;
 use memsec::memzero;
 
 use crate::Fr;
 
-lazy_static! {
-    /// The size in bytes of a single field element.
-    pub(crate) static ref FR_SIZE: usize = size_of::<Fr>();
-}
+pub(crate) const FR_SIZE: usize = size_of::<Fr>();
 
 /// Overwrites a single field element with zeros.
 pub(crate) fn clear_fr(fr_ptr: *const Fr) {
-    unsafe { memzero(fr_ptr as *mut u8, *FR_SIZE) };
+    unsafe { memzero(fr_ptr as *mut u8, FR_SIZE) };
 }
 
 pub(crate) struct MemRange {