zeroize 1.9.0

# This file is automatically @generated by Cargo.
# It is not intended for manual editing.
version = 4

[[package]]
name = "sample-zeroize"
version = "1.0.0"
dependencies = [
 "zeroize",
]

[[package]]
name = "zeroize"
version = "1.9.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "e13c156562582aa81c60cb29407084cdb54c4164760106ab78e6c5b0858cf64e"

[package]
name = "sample-zeroize"
version = "1.0.0"
edition = "2021"
publish = false

[dependencies]
zeroize = "=1.9.0"

[[bin]]
name = "contract"
path = "test/contract.rs"

Clean-room public code sample — generation instructions

Write a brand-new, minimal, self-contained code sample in this clean-room directory.
Do not copy, paraphrase, or reference any existing project source. Work only from this spec.

A csx.json manifest scaffold already exists. Do not recreate it from memory. Preserve its case.goal, packages and symbols; fill its empty case.contract with exact assertions and correct its environment, commands and verifierAdapter for the files you generate.

Goal: verify pkg:cargo/zeroize@1.9.0
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:cargo/zeroize@1.9.0

Rules:
  - One focused purpose; the smallest project that proves the goal.
  - Include a contract test (test/contract.*) that runs OFFLINE and exits 0 exactly when the goal behavior works.
  - Pin every dependency with a lockfile so resolution is reproducible.
  - No secrets, credentials, or tokens. No real URLs (only example.com or localhost). No absolute paths.
  - No personal names, emails, company names, or project identifiers of any kind.
  - No binaries and no generated output (node_modules, dist, target, venv, .git, .env).
  - Keep it under 200 files and 256KB packed.

{"case":{"caseId":"case:sha256:7d688b836f6873d4460bd495b8bfba511ac701afe0f1ea43ca06f9502e487fae","contract":["Zeroize clears integer scalars and arrays to zero","Zeroize clears heap-allocated Vec elements and truncates length to zero","Zeroize clears String buffer contents and truncates length to zero","Zeroizing wrapper provides transparent deref access and zeroizes inner value"],"goal":"verify pkg:cargo/zeroize@1.9.0","kind":"HOW","packages":["pkg:cargo/zeroize@1.9.0"],"schemaVersion":1},"contractCommand":["cargo","run","--offline"],"environment":{"arch":"x64","distro":"alpine","ecosystem":"cargo","libc":"musl","os":"linux","packageManager":"cargo","schemaVersion":1},"license":"MIT-0","packages":["pkg:cargo/zeroize@1.9.0"],"schemaVersion":1,"subject":"pkg:cargo/zeroize@1.9.0","verifierAdapter":"cargo@1"}

{
  "schemaVersion": 1,
  "goal": "verify pkg:cargo/zeroize@1.9.0",
  "kind": "HOW",
  "packages": [
    "pkg:cargo/zeroize@1.9.0"
  ]
}

//! Clean-room verification sample for zeroize.

pub use zeroize::*;

use zeroize::{Zeroize, Zeroizing};

fn main() {
    // 1. Zeroize clears integer scalars and arrays to zero
    let mut val_u64: u64 = 0xdeadbeefcafebabe;
    val_u64.zeroize();
    assert_eq!(val_u64, 0);

    let mut arr = [42u8; 32];
    arr.zeroize();
    assert_eq!(arr, [0u8; 32]);

    let mut slice_data = [9u8; 8];
    slice_data.as_mut_slice().zeroize();
    assert_eq!(slice_data, [0u8; 8]);

    // 2. Zeroize clears heap-allocated Vec elements and truncates length to zero
    let mut vec = vec![1u8, 2, 3, 4, 5];
    vec.zeroize();
    assert_eq!(vec.len(), 0);
    assert!(vec.capacity() >= 5);

    // 3. Zeroize clears String buffer contents and truncates length to zero
    let mut s = String::from("sensitive password");
    s.zeroize();
    assert_eq!(s.len(), 0);
    assert!(s.capacity() >= 18);

    // 4. Zeroizing wrapper provides transparent deref access and zeroizes inner value
    let mut wrapped = Zeroizing::new([7u8; 16]);
    assert_eq!(&wrapped[..], &[7u8; 16]);
    wrapped.zeroize();
    assert_eq!(&wrapped[..], &[0u8; 16]);

    let mut secret = Zeroizing::new(vec![0xAAu8; 10]);
    assert_eq!(secret.len(), 10);
    secret.zeroize();
    assert_eq!(secret.len(), 0);

    println!("All zeroize contract assertions passed successfully.");
}