From 87cbaac98efeaeca87a41b52842021f2e90d2863 Mon Sep 17 00:00:00 2001
From: Pol Henarejos <pol.henarejos@cttc.es>
Date: Sat, 22 Aug 2026 00:48:00 +0200
Subject: [PATCH] Clean hardware sha256 state on free

Signed-off-by: Pol Henarejos <pol.henarejos@cttc.es>
---
 config/rp2350/alt/sha256_alt.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/config/rp2350/alt/sha256_alt.c b/config/rp2350/alt/sha256_alt.c
index 82bcd4d..7253618 100644
--- a/config/rp2350/alt/sha256_alt.c
+++ b/config/rp2350/alt/sha256_alt.c
@@ -75,6 +75,7 @@ void mbedtls_sha256_free(mbedtls_sha256_context *ctx) {
         return;
     }
 
+    pico_sha256_cleanup(&ctx->pico_state);
     mbedtls_platform_zeroize(ctx, sizeof(mbedtls_sha256_context));
 }