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[Security](/categories/security) 4. / 5. philiprehberger/php-crypt ActiveLibrary[Security](/categories/security) philiprehberger/php-crypt ========================= Secure-by-default encryption with AES-256-GCM and key rotation v1.0.3(1mo ago)11[1 PRs](https://github.com/philiprehberger/php-crypt/pulls)MITPHPPHP ^8.2CI passing Since Mar 15Pushed 1mo agoCompare [ Source](https://github.com/philiprehberger/php-crypt)[ Packagist](https://packagist.org/packages/philiprehberger/php-crypt)[ Docs](https://github.com/philiprehberger/php-crypt)[ RSS](/packages/philiprehberger-php-crypt/feed)WikiDiscussions main Synced 1mo ago READMEChangelogDependencies (3)Versions (5)Used By (0) PHP Crypt ========= [](#php-crypt) [![Tests](https://github.com/philiprehberger/php-crypt/actions/workflows/tests.yml/badge.svg)](https://github.com/philiprehberger/php-crypt/actions/workflows/tests.yml)[![Latest Version on Packagist](https://camo.githubusercontent.com/0f11230e15b9ecf03b670572dc35534a45df2355a274969ac251c346d9a4e40e/68747470733a2f2f696d672e736869656c64732e696f2f7061636b61676973742f762f7068696c69707265686265726765722f7068702d63727970742e737667)](https://packagist.org/packages/philiprehberger/php-crypt)[![License](https://camo.githubusercontent.com/0aa023a1fa3cf84eaba21a9d4dcd50e6b150039ed690c0a2f402441eeee746a2/68747470733a2f2f696d672e736869656c64732e696f2f6769746875622f6c6963656e73652f7068696c69707265686265726765722f7068702d6372797074)](LICENSE) Secure-by-default encryption with AES-256-GCM and key rotation. Requirements ------------ [](#requirements) - PHP 8.2+ - ext-openssl Installation ------------ [](#installation) ``` composer require philiprehberger/php-crypt ``` Usage ----- [](#usage) ### Basic Encryption [](#basic-encryption) ``` use PhilipRehberger\Crypt\Crypt; $key = Crypt::generateKey(); $encrypted = Crypt::encrypt('sensitive data', $key); $decrypted = Crypt::decrypt($encrypted, $key); ``` ### Additional Authenticated Data (AAD) [](#additional-authenticated-data-aad) Bind ciphertext to a context so it cannot be used elsewhere: ``` $encrypted = Crypt::encrypt('data', $key, aad: 'user:42'); $decrypted = Crypt::decrypt($encrypted, $key, aad: 'user:42'); ``` ### Key Rotation [](#key-rotation) Re-encrypt data when rotating keys: ``` $rotated = Crypt::rotate($encrypted, $oldKey, $newKey); ``` ### Array Encryption [](#array-encryption) Encrypt and decrypt arrays (serialized as JSON): ``` $encrypted = Crypt::encryptArray(['name' => 'Alice', 'role' => 'admin'], $key); $data = Crypt::decryptArray($encrypted, $key); ``` ### KeyChain (Multi-Key Management) [](#keychain-multi-key-management) Manage key rotation transparently — encrypts with the current key, decrypts with any known key: ``` use PhilipRehberger\Crypt\KeyChain; $chain = new KeyChain($newKey, $oldKey1, $oldKey2); $encrypted = $chain->encrypt('data'); $decrypted = $chain->decrypt($encryptedWithAnyKey); // Re-encrypt all ciphertexts with the current key $rotated = $chain->rotateAll($ciphertexts); ``` API --- [](#api) ### `Crypt` (Static) [](#crypt-static) MethodDescription`generateKey(): string`Generate a random base64-encoded 32-byte key`encrypt(string $data, string $key, ?string $aad = null): string`Encrypt data with AES-256-GCM`decrypt(string $encrypted, string $key, ?string $aad = null): string`Decrypt AES-256-GCM ciphertext`rotate(string $encrypted, string $oldKey, string $newKey): string`Re-encrypt data with a new key`encryptArray(array $data, string $key): string`Encrypt an array as JSON`decryptArray(string $encrypted, string $key): array`Decrypt a JSON-encoded array### `KeyChain` [](#keychain) MethodDescription`__construct(string $currentKey, string ...$previousKeys)`Create a key chain`encrypt(string $data): string`Encrypt with the current key`decrypt(string $encrypted): string`Decrypt with any key in the chain`rotateAll(array $ciphertexts): array`Re-encrypt all ciphertexts with the current key### Exceptions [](#exceptions) ExceptionWhen`InvalidKeyException`Key is not a valid base64-encoded 32-byte string`DecryptionException`Decryption fails (wrong key, tampered data, invalid ciphertext)Development ----------- [](#development) ``` composer install vendor/bin/phpunit vendor/bin/pint --test vendor/bin/phpstan analyse ``` License ------- [](#license) MIT ### Health Score 41 — FairBetter than 88% of packages Maintenance96 Actively maintained with recent releases Popularity4 Limited adoption so far Community6 Small or concentrated contributor base Maturity49 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 4 Last Release 52d ago ### Community Maintainers ![](https://www.gravatar.com/avatar/cfd7d24cbbf32400fa13ce0bbe7a31edd2d66a6d4488eafdb3d64c5337bf0435?d=identicon)[philiprehberger](/maintainers/philiprehberger) --- Top Contributors [![philiprehberger](https://avatars.githubusercontent.com/u/8218077?v=4)](https://github.com/philiprehberger "philiprehberger (10 commits)") --- Tags securityencryptioncryptoopensslkey-rotationaes-256-gcm ### Code Quality TestsPHPUnit Static AnalysisPHPStan Code StyleLaravel Pint Type Coverage Yes ### Embed Badge ![Health badge](/badges/philiprehberger-php-crypt/health.svg) ``` [![Health](https://phpackages.com/badges/philiprehberger-php-crypt/health.svg)](https://phpackages.com/packages/philiprehberger-php-crypt) ``` ### Alternatives [defuse/php-encryption Secure PHP Encryption Library 3.9k162.4M212](/packages/defuse-php-encryption)[phpseclib/phpseclib PHP Secure Communications Library - Pure-PHP implementations of RSA, AES, SSH2, SFTP, X.509 etc. 5.6k434.8M1.3k](/packages/phpseclib-phpseclib)[poly-crypto/poly-crypto High-level cryptographic functions that are interoperable between NodeJS and PHP 7.1+ 127.8k1](/packages/poly-crypto-poly-crypto)[ercsctt/laravel-file-encryption Secure file encryption and decryption for Laravel applications 642.6k](/packages/ercsctt-laravel-file-encryption) PHPackages © 2026 [Directory](/)[Categories](/categories)[Trending](/trending)[Changelog](/changelog)[Analyze](/analyze)