Comments (3)
How about subtle::ConstantTimeEq
as a safe alternative?
It's slightly more cumbersome in that you have to import a trait and use Into
to coerce subtle::Choice
into a boolean, but it would avoid exposing unsafe APIs just for testing.
from crates.
@steven-joruk, which workaround did you end up using? Mind sharing an example? 🙇🏻♂️
@tony-iqlusion, could you share an example of what you'd have in mind for the case of implementing PartialEq
/Eq
using subtle::Choice
? 🙇🏻♂️
from crates.
Unfortunately, due to the orphan trait rule, I couldn't find a nice workaround for this, so I just made my own wrapper type and used that instead.
use secrecy::{
ExposeSecret, Secret, Zeroize,
};
/// Secret<T> wrapper that impls PartialEq and Eq (so you can use it in BTreeSets and such)
pub struct SecretWrapper<T>(pub Secret<T>)
where
T: Zeroize;
impl<T> SecretWrapper<T>
where
T: Zeroize,
{
pub fn new(value: T) -> Self {
Self(Secret::new(value))
}
}
impl<T> Eq for SecretWrapper<T> where T: Zeroize + Eq {}
impl<T> PartialEq for SecretWrapper<T>
where
T: Zeroize + PartialEq,
{
fn eq(&self, other: &Self) -> bool {
self.expose_secret() == other.expose_secret()
}
}
You'll need to impl any other traits you may need (Clone/Debug/etc)
from crates.
Related Issues (20)
- RUSTSEC-2020-0071: Potential segfault in the time crate
- Implement `Zeroize` for `NonZeroX` HOT 1
- zeroize: implement `Zeroize` for `PhantomData` HOT 3
- MSRV in bip32 README is incorrect HOT 1
- secrecy: Zeroize an serde_json::Value HOT 1
- bip32: why can't private ExtendedKey instances convert to `ExtendedPublicKeys` with `TryFrom`? HOT 2
- secrecy: how should one use `SecretBytesMut`? HOT 2
- Is it possible to get derived address from a private key generated by bip32 crate?
- Cannot clone a `SecretVec<u8>` as `u8` is not `CloneableSecret` HOT 1
- secrecy: Using the serde feature in a no-std environment
- secrecy: Add an example to deserialize a SecretString
- Impl `exposure_count` for `ExposeSecret` trait?
- canonical-path: Repository link is 404
- RUSTSEC-2023-0052: webpki: CPU denial of service in certificate path building
- Support 12 word BIP39 entropy HOT 1
- implemente HasLen trait
- RUSTSEC-2024-0336: `rustls::ConnectionCommon::complete_io` could fall into an infinite loop based on network input
- secrecy: support `ZeroizeOnDrop` HOT 3
- Into version for SecretString expose_secret
- secrecy: Secret.as_ref() ?
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