Make sure you have downloaded the JWT Authentication for CoCart plugin and installed it.

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Secret Key Configuration

Add the following code to your wp-config.php file: 
define( 'COCART_JWT_AUTH_SECRET_KEY', 'YOUR-UNIQUE-SECRET-KEY' );
Never share or commit your secret key. Keep it secure and unique for each environment.

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Enable PHP HTTP Authorization Header

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Shared Hosts

Most shared hosting providers have disabled the HTTP Authorization Header by default. To enable this option you’ll need to edit your .htaccess file by adding the following: 
RewriteEngine on
RewriteCond %{HTTP:Authorization} ^(.*)
RewriteRule ^(.*) - [E=HTTP_AUTHORIZATION:%1]
or 
RewriteEngine On
RewriteRule .* - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization}]

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WPEngine

To enable this option you’ll need to edit your .htaccess file by adding the following outside of IfModule: 
SetEnvIf Authorization "(.*)" HTTP_AUTHORIZATION=$1
Example of what that looks like. 
# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
RewriteCond %{HTTP:Authorization} ^(.*)
RewriteRule ^(.*) - [E=HTTP_AUTHORIZATION:%1]
</IfModule>

SetEnvIf Authorization "(.*)" HTTP_AUTHORIZATION=$1
# END WordPress

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How It Works

CoCart JWT Authentication implements a secure OAuth 2.0 compliant authentication flow. Here’s how the authentication process works in your WordPress application:
1

Authentication Request

Client authenticates the login endpoint via Authorization header using the basic method to obtain JWT tokens.
2

Token Usage

Use the JWT token to authenticate any REST API requests via Authorization header using bearer method.
3

Token Refresh

Use refresh token to obtain new access tokens without re-authentication via the refresh-token endpoint.
4

Validate Token

Validate the token in the background of your application from time to time to check the users authentication session is still valid.

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Security Best Practices

CoCart JWT Authentication comes with built-in security features to protect your WordPress application. Here are the key security measures you should be aware of:
Automatic token revocation on password/email changes.
Automatic token revocation on user deletion.
Automatic token revocation on user logout.
Configurable token expiration times.
Secure refresh token rotation.