Simplest Two-Way Encryption Using PHP
While RC4 is a common encryption method in PHP, it lacks native support and introduces unnecessary code complexity. For simplified and portable encryption, consider the following approaches:
Using OpenSSL with CTR Mode:
If PHP 5.4 or later is available, OpenSSL's openssl_encrypt() and openssl_decrypt() provide a more secure and efficient encryption method:
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Using libsodium Compat:
Libsodium offers a robust cryptography library with authenticated encryption capabilities. Its PHP extension, libsodium-compat, provides a convenient interface:
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Building a Custom Encryption System:
If you prefer to roll your own encryption mechanism, consider the following:
UnsafeCryptography:
This class provides basic encryption functionality without authentication:
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SaferCryptography:
This class extends UnsafeCryptography and adds authentication to protect against ciphertext tampering:
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Remember:
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