Uses old Rust 2015
|0.1.4||Feb 2, 2017|
|0.1.3||Jan 14, 2017|
|0.1.2||Jan 13, 2017|
|0.1.1||Jan 13, 2017|
|0.1.0||Jan 12, 2017|
#511 in Cryptography
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Nolonger maintained. Used ClearOnDrop instead.
A thin wrapper for
Box that zeros its data when dropped
There are many types of data that should be erased when nolonger needed, with cryptographic key material being an extreme example. This crate provides simple wrapper types that zero their contents when dropped. See the documentation.
We cannot recommend this crate for all cryptographic applications because it lacks support for
mlock. There is no way to support
mlock with less than a full fledged allocator because if several
mlock calls lock the same page then the first
munlock call will unlock that page completely.
There are two crates secrets and tars that provides such an allocator, which you should use if you want real protection. These crates predate the recently added allocator traits however, so things remain in flux for now.
We believe this crate provides an API similar enough to an allocator wrapping
mlock that code developed using it and later ported to a full fledged allocator. In particular, we operate only upon
Boxed data and provide no methods that return data to the stack where it could not be erased reliably.
This crate works with Cargo and is on
crates.io. Add it to your
[dependencies] zerodrop = "^0.1"
Use the crate like:
extern crate zerodrop; ...