In a perfect world, they wouldn't. Keys should live in Hardware Security Modules (HSMs), Key Vaults (like AWS KMS or Azure Vault), or environment variables.
Here is the reality check on AES keys, plain-text storage, and the dangerous game of hunting for .txt files. AES (Advanced Encryption Standard) is the gold standard for securing data. It is used by governments, banks, and your VPN. An AES key is a random string of bits (128, 192, or 256 bits) used to mathematically lock and unlock data. aes keys txt download
Have you ever accidentally exposed a secret key? Let us know in the comments below. In a perfect world, they wouldn't