Thank you so much for decrypt my files in Help, my files are encrypted! Posted February 25 · Report reply Hello @masoudkhsh, Welcome to the Emsisoft Support Forums. General Notes With Regards to STOP/DJVU If the decryption tool tells you the files cannot be decrypted, then they cannot be decrypted. That is not an error message. If your files have an Online ID that means that the files encryption keys were generated and stored on a command & control server under the control of the ransomware gang responsible for encrypting your files. We do not have access to those keys. Our ability to add private encryption keys for Online IDs depends entirely on law enforcement agencies arresting the criminals and releasing their database of private keys for inclusion in decryption tools. New Variant STOP/DJVU utilizes both the RSA and Salsa20 encryption algorithms. Both RSA and Salsa20 are considered secure encryption methods and are unbreakable using current technologies. They are not reversible, cannot be cracked, and we are not able to generate a decryption key. So do not send us encrypted files thinking we can recover your decryption key, we can't. Also, see https://support.emsisoft.com/topic/32045-about-the-stopdjvu-decrypter/ for more information on the STOP/DJVU decryption tool.