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pmeulen
/ public_encrypt_decrypt.php
Last active
November 17, 2025 21:17
Functions for encrypting and decrypting data with RSA public key crypto using the PHP openssl_* functions.
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| <?php | |
| /** | |
| * Encrypt $plaintext using $rsa_public_key | |
| * | |
| * To decrypt the data the RSA private that corresponds to the $rsa_public_key is required. | |
| * | |
| * Because public key crypto is not suitable for arbitrary length data, encryption is done in two steps | |
| * 1. Generate a random symmetric key and encrypt the plaintext with that key |