7.13. Secure Link for files in storage

The Secure Link technology allows the use of secure links to files. Such links contain secret key and can be IP-restricted, time-restricted, or unrestricted. Using Secure Link, you can organize flexible secure access to files in your storage.

Example of a link:

https://example.cdn.express/secure/ip/t/XXxXXxxXXXXXXXXXXXxxXx/1234567890/path/to/file

Each secure link consists of several parts:

• Storage address
• Type of access restriction:
  • secure/ip/t — by IP address and lifetime.
  • secure/ip — by IP address only.
  • secure/t — by lifetime only
  • secure — no restrictions.
• An encoded hash of the data set of the secret key, path, and access restriction options.
• End of life time tag (if used).
• Path to the file in storage.

Secret key is generated on the "Secure Link" tab:

You can also refresh it there.

The form is intended for test generation of Secure Link with different access restriction options:

You can specify the path to the required file from the storage root, the lifetime in seconds, the type of access restriction and click "Generate". The output will be a ready link that can be copied to clipboard and used for testing.

Examples of ready PHP code for Secure Link generation with different access restriction options can be used as a basis for your own scripts. The storage address and secret key are already present in the code, all you need to do is specify the path to the required file in the storage, optionally the visitor's IP address and lifetime, and the output will be a secure link.