zeroize-kotlin in Kotlin

This is a Kotlin Multiplatform line-by-line transliteration port of RustCrypto/utils.

Original Project: This port is based on RustCrypto/utils. All design credit and project intent belong to the upstream authors; this repository is a faithful port to Kotlin Multiplatform with no behavioural changes intended.

Porting status

This is an in-progress port. The goal is feature parity with the upstream Rust crate while providing a native Kotlin Multiplatform API. Every Kotlin file carries a // port-lint: source <path> header naming its upstream Rust counterpart so the AST-distance tool can track provenance.

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Upstream README — RustCrypto/utils

The text below is reproduced and lightly edited from https://github.com/RustCrypto/utils. It is the upstream project's own description and remains under the upstream authors' authorship; links have been rewritten to absolute upstream URLs so they continue to resolve from this repository.

RustCrypto: Utilities

This repository contains various utility crates used in the RustCrypto project.

Crates

Name	crates.io	Docs	Description
aarch64-dit			Wrappers for enabling/disabling the Data Independent Timing (DIT) feature on AArch64 CPUs
blobby			Decoder of the simple de-duplicated binary blob storage format
block-buffer			Fixed size buffer for block processing of data
block‑padding			Padding and unpadding of messages divided into blocks
cmov			Conditional move intrinsics
cpubits			Compile-time detection heuristics for the optimal word size to use for the target CPU
cpufeatures			Lightweight and efficient alternative to the is_x86_feature_detected! macro
ctutils			Constant-time utility library with selection and equality testing support targeting cryptographic applications
dbl			Double operation in Galois Field (GF)
digest-io			std::io-compatibility wrappers for traits defined in the digest crate
hex-literal			A macro for converting hexadecimal strings to a byte array at compile time
inout			Custom reference types for code generic over in-place and buffer-to-buffer modes of operation.
wycheproof2blb
zeroize			Securely zero memory while avoiding compiler optimizations

License

All crates licensed under either of

• Apache License, Version 2.0
• MIT license

at your option.

Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.

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About this Kotlin port

Installation

dependencies {
    implementation("io.github.kotlinmania:zeroize-kotlin:0.1.1")
}

Building

./gradlew build
./gradlew test

Targets

• macOS arm64
• Linux x64
• Windows mingw-x64
• iOS arm64 / simulator-arm64 (Swift export + XCFramework)
• JS (browser + Node.js)
• Wasm-JS (browser + Node.js)
• Wasm-WASI (Node.js)
• Android (API 24+)
• Android Native arm32 / arm64 / x86 / x64
• JVM

Porting guidelines

See AGENTS.md for translator discipline, port-lint header convention, and Rust -> Kotlin idiom mapping.

License

This Kotlin port is distributed under the same Apache-2.0 license as the upstream RustCrypto/utils. See LICENSE (and any sibling LICENSE-* / NOTICE files mirrored from upstream) for the full text.

Original work copyrighted by the utils authors.
Kotlin port: Copyright (c) 2026 Sydney Renee and The Solace Project.

Acknowledgments

Thanks to the RustCrypto/utils maintainers and contributors for the original Rust implementation. This port reproduces their work in Kotlin Multiplatform; bug reports about upstream design or behavior should go to the upstream repository.