Hey everyone,
I'm relatively new to using the PHP encryption library called paragonie/halite, and I'm encountering an issue that I can't seem to solve on my own. I've been trying to use the sodium_constants.php file that comes with the library, but it seems like some key constants are missing.
Specifically, I'm looking for the Sodium\CRYPTO_AEAD_CHACHA20POLY1305_IETF_KEYBYTES constant, but it's not present in the sodium_constants.php file. I've checked the file multiple times, and I've also tried searching for alternatives, but I couldn't find any concrete answers.
I'm wondering if there's something I'm missing or if anyone else has encountered a similar problem. Is there a way to obtain or define the missing Sodium constants for paragonie/halite? Any guidance or suggestions would be greatly appreciated.
Thanks in advance for your help!

Hey everyone,
I had a similar experience while using paragonie/halite in PHP. It can be frustrating when you're missing crucial Sodium constants in the sodium_constants.php file, especially when you're trying to work with encryption.
After doing some digging, I found that the missing constants were actually available in the Sodium extension itself. However, in my case, the extension wasn't installed on my PHP server. So, I had to install it first.
To install the Sodium extension, I followed these steps:
1. Check if the extension is already installed by running `php -m | grep sodium` in the command line. If it returns a result, it means the extension is already installed.
2. If it's not installed, you can use the package manager for your operating system to install it. For example, on Ubuntu, I used the following command:
3. After installation, make sure to enable the Sodium extension in your PHP configuration files. This typically involves adding or uncommenting the line `extension=sodium.so` in the php.ini file, and then restarting your web server.
Once the Sodium extension was installed and enabled, I was able to access the missing constants directly from the extension. For example, to retrieve the `CRYPTO_AEAD_CHACHA20POLY1305_IETF_KEYBYTES` constant, I used the following code:
I hope this helps you resolve the issue! Let me know if you have any further questions or need more assistance.