phpseclib/mcrypt_compat
PHP 5.x–8.x polyfill for the deprecated mcrypt extension. Provides common ciphers (Rijndael/AES variants, DES, Blowfish, RC2, 3DES, ARCFOUR) and modes (CBC, CFB, CTR, ECB, OFB, stream). Can emulate older PHP mcrypt behavior.
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| web3p/ethereum-util | 0.84 | — | 29 | 30 | 20 | 14K | 2 | 2.6 | 37.0 | MIT | 3 years ago | |
| assistenzde/simple-cryptographic-bundle | 0.83 | — | 0 | 0 | 0 | 0 | 0 | 0.0 | — | MIT | — | |
| richardstyles/eloquentencryption | 0.83 | — | 107 | 107 | 18 | 392 | 0 | 19.5 | 10.4 | MIT | 3 months ago | |
| opichon/pcrypt | 0.82 | pcrypt is a small PHP/Laravel package that helps you encrypt and decrypt values using password-based cryptography. Useful for securely storing sensitive strings, generating encrypted payloads, and adding an extra layer of protection beyond plain hashing. | 0 | 0 | 1 | 2 | 0 | 0.0 | 6.6 | — | — | |
| phpseclib/phpseclib | 0.81 | Pure-PHP secure communications library: SSH-2 and SFTP plus crypto primitives and PKI tools (X.509, RSA, ECDSA/ECDH, Ed25519, DH/DSA) and ciphers like AES/ChaCha20 with GCM/Poly1305. MIT licensed and Composer-ready. | 5,573 | 5,687 | 908 | 9M | 197 | 89.9 | 77.6 | MIT | 1 month ago | |
| laravel/legacy-encrypter | 0.81 | Drop-in Laravel encrypter compatible with legacy apps. Encrypt/decrypt data using older key formats and cipher settings so you can read existing payloads and migrate safely. Useful for upgrades where stored encrypted values must remain accessible. | 62 | 64 | 33 | 84 | 0 | 1.3 | 1.4 | MIT | — | |
| wdalmut/rc4-support | 0.80 | Lightweight RC4 stream cipher implementation for PHP. Instantiate RC4 with a secret key, then encrypt/decrypt strings via __invoke() or rc4() method. Includes PHPUnit tests for verification. | 0 | 0 | 0 | 2 | 0 | 0.0 | 6.6 | MIT | — | |
| phpseclib/bcmath_compat | 0.78 | BCMath compatibility layer for PHP environments without the bcmath extension. Provides drop-in function replacements used by phpseclib, helping big integer and cryptography features work consistently across shared hosts, minimal installs, and varied PHP builds. | 167 | 168 | 6 | 287K | 0 | 5.3 | 44.7 | MIT | 1 year ago | |
| paragonie/ecc | 0.77 | Pure-PHP elliptic curve cryptography (ECDSA/ECDH) with an OpenSSL 3+ fast path and hardened constant-time fallbacks. Fork of phpecc/mdanter. Supports secp256k1, NIST P-256/384/521, Brainpool, plus optional insecure curves. | 24 | 24 | 6 | 41K | 1 | 5.4 | 45.6 | — | 10 months ago | |
| symfony/polyfill-php84 | 0.77 | Symfony Polyfill for PHP 8.4 features on older runtimes. Adds functions like array_find/any/all, bcdivmod, fpow, grapheme_str_split, mb_* trim/ucfirst/lcfirst, Deprecated attribute, cURL HTTP/3 constants, PDO driver subclasses, and ReflectionConstant. | 137 | 138 | 5 | 11M | 0 | 22.6 | 65.0 | MIT | 2 weeks ago | |
| spomky-labs/php-aes-gcm | 0.77 | PHP library implementing AES-GCM (Galois/Counter Mode) authenticated encryption. Provides encrypt/decrypt with IV/nonce handling, auth tags, and AAD support for securing data with integrity. Useful for token payloads, messages, and secure storage. | 72 | 72 | 23 | 31K | 2 | 1.5 | — | MIT | 7 years ago |
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