A is a unique alphanumeric string required to access files shared via MEGA.nz. What it is : Part of MEGA's "Zero-Knowledge" encryption. Where to find it : Only the sender has the key. How it looks : A string following a # or ! in the URL. Security : MEGA cannot reset or recover lost keys for you. 🔑 How to get the key
So your files are truly encrypted before upload...? #124 - GitHub decryption key mega.nz