From c640781bc10cfdb6d652232c492ecd7e27210b26 Mon Sep 17 00:00:00 2001
From: Alexander Wagner <alexander.wagner@ulal.de>
Date: Mon, 23 Oct 2023 15:59:18 +0200
Subject: [PATCH] ascon-hash: Add Zeroize feature (#480)

Not zeroizing the state allows to recover any squeezed output. This is
because the `ascon` permutations can be inversed. Hence, access to the
complete state allows to perform this operation.
---
 ascon-hash/Cargo.toml | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/ascon-hash/Cargo.toml b/ascon-hash/Cargo.toml
index c04583302..cb3707cc7 100644
--- a/ascon-hash/Cargo.toml
+++ b/ascon-hash/Cargo.toml
@@ -19,7 +19,7 @@ rust-version = "1.56"
 
 [dependencies]
 digest = { version = "0.10", default-features = false, features = ["core-api"] }
-ascon = "0.3"
+ascon = { version = "0.4", default-features = false }
 
 [dev-dependencies]
 spectral = { version = "0.6", default-features = false }
@@ -28,6 +28,7 @@ hex = "0.4"
 [features]
 default = ["std"]
 std = ["digest/std"]
+zeroize = ["ascon/zeroize"] # TODO: enable zeroize in the future for block-buffer v0.11
 
 [package.metadata.docs.rs]
 all-features = true