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encryption - PHP paragonie/halite - missing Sodium\ constants?

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!

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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:

sudo apt-get install php-sodium

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:
$keyBytes = \Sodium\crypto_aead_chacha20poly1305_ietf_keybytes();

I hope this helps you resolve the issue! Let me know if you have any further questions or need more assistance.


Hey there,

I've also faced this issue before when working with paragonie/halite in PHP. It can be quite frustrating when the required Sodium constants are missing from the sodium_constants.php file.

In my case, I found that the missing constants were actually available in the Sodium extension itself. To access these constants, you need to have the Sodium extension installed and enabled on your PHP server.

Once you have the extension installed, you can retrieve the required constants using the following code:

$keyBytes = \Sodium\crypto_aead_chacha20poly1305_ietf_keybytes();

This will give you the value of CRYPTO_AEAD_CHACHA20POLY1305_IETF_KEYBYTES directly from the Sodium extension.

If you don't have the Sodium extension installed, make sure to install it first, and then enable it in your PHP configuration. After that, you should be able to access the missing constants without any issues.

I hope this helps! Let me know if you have any further questions.


Hey folks,

I recently encountered a similar hurdle when using paragonie/halite in PHP, specifically with the missing Sodium constants in the sodium_constants.php file. It can be quite perplexing when you're trying to implement encryption and face such roadblocks.

In my case, I followed the suggestions mentioned earlier, but I still couldn't access the required constants. After some investigation, I realized that the issue was related to my PHP version.

I discovered that the Sodium extension, which provides these constants, was added to the PHP core starting from PHP 7.2. If you're using an older PHP version, it's possible that some constants might be missing due to the absence of the compatible extension.

In order to resolve this, I had to upgrade my PHP version to at least 7.2. This involved either updating the PHP version on my server or using a local development environment that had the required version installed.

After upgrading to a compatible PHP version, I was pleased to find that the missing constants were readily available in the Sodium extension, and I was able to retrieve them successfully in my code.

So, if you're facing a similar issue, ensure that your PHP version meets the minimum requirement for the Sodium extension. Upgrading your PHP version might just do the trick.

Hope this insight helps! Let me know if you have any further queries or need more assistance.

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