Merge pull request #4 from namada-net/tomas/replace-memzero

replace memzero and update license

Author: tzemanovic

Cargo.toml

@@ -1,9 +1,9 @@
 [package]
 name = "nam-tiny-hderive"
-version = "0.3.1-nam.0"
+version = "0.3.1-nam.1"
 authors = ["Parity Technologies <[email protected]>"]
 edition = "2018"
-license = "GPL-3.0"
+license = "GPL-3.0-or-later"
 description = "(Namada fork) Tiny BIP44/BIP32 derivation for BIP39 seeds"
 documentation = "https://docs.rs/tiny-hderive"
 homepage = "https://github.com/maciejhirsz/tiny-hderive"
@@ -15,7 +15,7 @@ k256 = "0.13"
 base58 = "0.2"
 sha2 = "0.10"
 hmac = "0.12"
-memzero = "0.1"
+zeroize = "1.8"
 
 [dev-dependencies]
 ethsign = { version = "0.9", default-features = false, features = ["pure-rust"] }

src/bip32.rs

@@ -1,25 +1,25 @@
 use base58::FromBase58;
 use hmac::{Hmac, Mac};
 use k256::SecretKey;
-use memzero::Memzero;
 use sha2::Sha512;
 use std::fmt;
 use std::ops::Deref;
 use std::str::FromStr;
+use zeroize::ZeroizeOnDrop;
 
 use crate::bip44::{ChildNumber, IntoDerivationPath};
 use crate::Error;
 
-#[derive(Clone, PartialEq, Eq)]
-pub struct Protected(Memzero<[u8; 32]>);
+#[derive(Clone, PartialEq, Eq, ZeroizeOnDrop)]
+pub struct Protected([u8; 32]);
 
 impl<Data: AsRef<[u8]>> From<Data> for Protected {
     fn from(data: Data) -> Protected {
         let mut buf = [0u8; 32];
 
         buf.copy_from_slice(data.as_ref());
 
-        Protected(Memzero::from(buf))
+        Protected(buf)
     }
 }