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[Security](/categories/security) 4. / 5. amashukov/keccak-php ActiveLibrary[Security](/categories/security) amashukov/keccak-php ==================== Keccak-256 and SHA-3 family permutations in pure PHP. v0.1.2(2mo ago)0378↑43.6%3MITPHPPHP >=8.3CI passing Since May 24Pushed 2mo agoCompare [ Source](https://github.com/AndreyMashukov/keccak-php)[ Packagist](https://packagist.org/packages/amashukov/keccak-php)[ RSS](/packages/amashukov-keccak-php/feed)WikiDiscussions main Synced 3w ago READMEChangelogDependencies (5)Versions (4)Used By (3) amashukov/keccak-php ==================== [](#amashukovkeccak-php) Pure-PHP Keccak-256, SHA-3 and SHAKE hashing — the `keccak256` primitive behind Ethereum addresses, ABI selectors and EVM signatures. [![CI](https://camo.githubusercontent.com/a07e7b96ccccd1d9be142c7eb24c30f608f2630753c0dbaa78e1127f129243e8/68747470733a2f2f696d672e736869656c64732e696f2f6769746875622f616374696f6e732f776f726b666c6f772f7374617475732f416e647265794d617368756b6f762f6b656363616b2d7068702f63692e796d6c3f6272616e63683d6d61696e266c6162656c3d4349)](https://github.com/AndreyMashukov/keccak-php/actions)[![PHPStan L9](https://camo.githubusercontent.com/7cd5a681c0218e774711870f96509cb33834cd5814a3363c31728048fee612f3/68747470733a2f2f696d672e736869656c64732e696f2f6769746875622f616374696f6e732f776f726b666c6f772f7374617475732f416e647265794d617368756b6f762f6b656363616b2d7068702f7374616e2e796d6c3f6272616e63683d6d61696e266c6162656c3d5048505374616e2532304c39)](https://github.com/AndreyMashukov/keccak-php/actions)[![Latest Version](https://camo.githubusercontent.com/75912ad76e5ab1772ca36c8361c0467954f43db86530811b6196ddc670bf7cc1/68747470733a2f2f696d672e736869656c64732e696f2f7061636b61676973742f762f616d617368756b6f762f6b656363616b2d706870)](https://packagist.org/packages/amashukov/keccak-php)[![Downloads](https://camo.githubusercontent.com/6ff464de3fc906e23d529618ef23c5d5571a3f989560b5b88c2182ceedbe576b/68747470733a2f2f696d672e736869656c64732e696f2f7061636b61676973742f64742f616d617368756b6f762f6b656363616b2d706870)](https://packagist.org/packages/amashukov/keccak-php)[![PHP](https://camo.githubusercontent.com/fc4eb472e8354ab1d085a1c80b0b30bae15aaa7d9a68c6a77c04ec41a456e94f/68747470733a2f2f696d672e736869656c64732e696f2f7061636b61676973742f646570656e64656e63792d762f616d617368756b6f762f6b656363616b2d7068702f706870)](https://packagist.org/packages/amashukov/keccak-php)[![License](https://camo.githubusercontent.com/3873283a98bf564d3a248d7f3a15811cdddb66ecb949e86105b154b673369c05/68747470733a2f2f696d672e736869656c64732e696f2f7061636b61676973742f6c2f616d617368756b6f762f6b656363616b2d706870)](LICENSE)[![Stars](https://camo.githubusercontent.com/28964cd54e87299882c8d81fca54901022183865b6d7c7f11f4590ed3cb29b50/68747470733a2f2f696d672e736869656c64732e696f2f6769746875622f73746172732f416e647265794d617368756b6f762f6b656363616b2d7068703f7374796c653d736f6369616c)](https://github.com/AndreyMashukov/keccak-php) `amashukov/keccak-php` is a pure-PHP implementation of the Keccak / SHA-3 family of cryptographic hash functions, including the SHAKE extendable-output functions (XOF). It provides the `keccak256` hash primitive used across Ethereum and other modern blockchains for address derivation, ABI function selectors and EIP-191 / EIP-712 message signing. Zero composer dependencies — only `ext-mbstring` from PHP core. Features -------- [](#features) - **Keccak-256** — the exact hash Ethereum uses for `keccak256`, address derivation and ABI selectors. - **Full SHA-3 family** — output sizes `224`, `256`, `384`, `512`. - **SHAKE128 / SHAKE256** extendable-output functions with arbitrary output length. - **Hex or raw binary** output via a single `raw_output` flag. - **Pure PHP** — no native extension to compile, no FFI; runs anywhere PHP 8.3 runs. - **Zero composer dependencies** — `ext-mbstring` only. - PHPStan level 9 clean, `@PER-CS` formatted, CI-tested. Installation ------------ [](#installation) ``` composer require amashukov/keccak-php ``` Usage ----- [](#usage) ``` use Amashukov\Keccak\Keccak; // Hex-encoded hash output (default). $digest = Keccak::hash('hello world', 256); // → 47173285a8d7341e5e972fc677286384f802f8ef42a5ec5f03bbfa254cb01fad // Raw 32-byte binary output. $raw = Keccak::hash('hello world', 256, raw_output: true); ``` Supported output sizes: `224`, `256`, `384`, `512`. SHAKE variants: ``` $xof = Keccak::shake('hello world', security_level: 128, outlen: 256); ``` Requirements ------------ [](#requirements) - PHP 8.3+ - `ext-mbstring` No composer dependencies. Related packages ---------------- [](#related-packages) Part of a modular pure-PHP blockchain toolkit: PackagePurpose[amashukov/keccak-php](https://github.com/AndreyMashukov/keccak-php)Keccak-256 / SHA-3 / SHAKE hashing[amashukov/secp256k1-php](https://github.com/AndreyMashukov/secp256k1-php)secp256k1 ECDSA sign / verify / recover[amashukov/rlp-php](https://github.com/AndreyMashukov/rlp-php)Ethereum RLP encode / decode[amashukov/ton-cell-php](https://github.com/AndreyMashukov/ton-cell-php)TON TLB Cell / Builder / Slice / BOC[amashukov/abi-encoder-php](https://github.com/AndreyMashukov/abi-encoder-php)Ethereum ABI encoder[amashukov/eip1559-tx-signer-php](https://github.com/AndreyMashukov/eip1559-tx-signer-php)EIP-1559 transaction signer[amashukov/eth-rpc-client-php](https://github.com/AndreyMashukov/eth-rpc-client-php)Ethereum JSON-RPC client[amashukov/eth-php](https://github.com/AndreyMashukov/eth-php)EVM umbrella packageQuality ------- [](#quality) - PHPStan level 9. - php-cs-fixer with the `@PER-CS` ruleset. - GitHub Actions CI on every push. - Test vectors validated against the published Keccak / SHA-3 reference outputs. License ------- [](#license) MIT License. ### Health Score 41 — FairBetter than 87% of packages Maintenance88 Actively maintained with recent releases Popularity17 Limited adoption so far Community11 Small or concentrated contributor base Maturity41 Maturing project, gaining track record Bus Factor1 Top contributor holds 100% of commits — single point of failure How is this calculated?**Maintenance (25%)** — Last commit recency, latest release date, and issue-to-star ratio. Uses a 2-year decay window. **Popularity (30%)** — Total and monthly downloads, GitHub stars, and forks. Logarithmic scaling prevents top-heavy scores. **Community (15%)** — Contributors, dependents, forks, watchers, and maintainers. Measures real ecosystem engagement. **Maturity (30%)** — Project age, version count, PHP version support, and release stability. ### Release Activity Cadence Every ~0 days Total 3 Last Release 62d ago ### Community Maintainers ![](https://www.gravatar.com/avatar/4b3e86ca79a82515b23e0239b1d3616c747e59b64c40e169d538d5c759c9bbc4?d=identicon)[Andrey Mashukov](/maintainers/Andrey%20Mashukov) --- Top Contributors [![AndreyMashukov](https://avatars.githubusercontent.com/u/24682497?v=4)](https://github.com/AndreyMashukov "AndreyMashukov (5 commits)") --- Tags blockchaincryptographyethereumhashingkeccakkeccak-256phpsha3hashethereumkeccaksha-3sha3keccak-256 ### Code Quality TestsPHPUnit Static AnalysisPHPStan, Rector Code StylePHP CS Fixer Type Coverage Yes ### Embed Badge ![Health badge](/badges/amashukov-keccak-php/health.svg) ``` [![Health](https://phpackages.com/badges/amashukov-keccak-php/health.svg)](https://phpackages.com/packages/amashukov-keccak-php) ``` ### Alternatives [lastguest/murmurhash MurmurHash3 Hash 12911.6M62](/packages/lastguest-murmurhash)[passwordlib/passwordlib A Password Hashing Library 372223.3k7](/packages/passwordlib-passwordlib)[paragonie/password_lock Wraps Bcrypt-SHA2 in Authenticated Encryption 19351.8k1](/packages/paragonie-password-lock)[miladrahimi/phpcrypt Encryption, decryption, and hashing tools for PHP projects 3075.7k2](/packages/miladrahimi-phpcrypt)[ayesh/stateless-csrf Secret-key based state-less CSRF token generator and validator for PHP 8. 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