v1.5.25

• Added indention and comments explaining functionality of the script
• encryptDataKEF function renamed to encryptData
• Replaced KEFInfo class and old decryptKEFData function with KEFData class and new decrypt function inside class
• Range retrieval should retrieve the appropriate number of bytes now

Let me know if there's any issues.

v1.5.0

• Updated code to make it neater and faster.
• Added KEFException class.
• Required PHP version is now >=7.4.0
• Added multi-passphrase feature. (NOTE: Files encrypted with 1.0.0 must be adapted with an octet that represents the number 0, see here for more info.)
• Restricted encryption ciphers to those with Galois/Counter Mode for ease-of-use and added security.

Let me know if there's any problems.

v1.0.0

Initial release.