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Informations about the package php-crypt

PHP Crypt

Tests Latest Version on Packagist Last updated

Secure-by-default encryption with AES-256-GCM and key rotation.

Requirements

Installation

Usage

Basic Encryption

Additional Authenticated Data (AAD)

Bind ciphertext to a context so it cannot be used elsewhere:

Key Rotation

Re-encrypt data when rotating keys:

Array Encryption

Encrypt and decrypt arrays (serialized as JSON):

JSON Encryption

Encrypt and decrypt any JSON-serializable value:

Key Validation

Check the strength of an encryption key:

KeyChain (Multi-Key Management)

Manage key rotation transparently — encrypts with the current key, decrypts with any known key:

API

Crypt (Static)

Method Description
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
encryptJson(mixed $data, string $key): string JSON-encode any value then encrypt
decryptJson(string $encrypted, string $key): mixed Decrypt then JSON-decode
validateKeyStrength(string $key): array Check key bit length and strength

KeyChain

Method Description
__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

Exception When
InvalidKeyException Key is not a valid base64-encoded 32-byte string
DecryptionException Decryption fails (wrong key, tampered data, invalid ciphertext)

Development

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License

MIT

All versions of php-crypt with dependencies

PHP Build Version
Package Version
Requires php Version ^8.2
ext-openssl Version *
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