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Informations about the package mysql-pdo-secure-session-handler

License: MIT

About

This is a mysql pdo secure session handler with openssl encryption/decryption of session data.

Cipher mode used for enryption/decryption is AES-256-CBC.

CBC has an IV and thus needs randomness every time a message is encrypted, changing a part of the message requires re-encrypting everything after the change, transmission errors in one ciphertext block completely destroy the plaintext and change the decryption of the next block, decryption can be parallelized / encryption can't, the plaintext is malleable to a certain degree.

Features

  1. openssl encryption of session data using AES-256-CBC cipher, "encryption key" and initialisation vector("IV")
    • "IV" is needed because of the default cipher mode (CBC)
  2. when session is being created so is the "IV" for that session. "IV "is then stored in the database as binary data
  3. lifetime of a session is kept in the database because
    • can't be tampered with that easily
    • calculation of the sessions expiration can be left to the database (faster) (example: DELETE FROM sessions WHERE (modified + INTERVAL lifetime SECOND) < NOW())

Usage

Generate your encryption key using: openssl rand -base64 -out tests/encryption.key 180 (recommended key length is 128 - 256 bits) then check the included example.

Encryption

As per cipher mode used (CBC in this case) data are encrypted using:\

Database

@see SessionHandler::createTable()

https://github.com/drnasin/mysql-pdo-secure-session-handler/blob/336143844bd89ee88daa2ff20058798f742c83f3/src/Drnasin/Session/SessionHandler.php#L373

Usage

composer require drnasin/mysql-pdo-secure-session-handler

or git clone the repo.

Example

check example.php

If you need any help let me know. Just use the "Issues" tab...

Tests

Update database variables in tests/phpunit.xml, then

run: composer tests

Code coverage

Code coverage will be generated in tests/code-coverage-report directory.

All versions of mysql-pdo-secure-session-handler with dependencies

PHP Build Version
Package Version
Requires php Version >=8.3
ext-openssl Version *
ext-pdo Version *
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