Encryption-key.bin File Download [better] Site

Use a (like OnionShare, Wormhole, or Bitwarden Send) instead of a direct attachment.

Before using the file, compute its SHA-256 hash: Encryption-key.bin File Download

Which are you trying to set up that is asking for this file? kibana-encryption-keys - Elastic Use a (like OnionShare, Wormhole, or Bitwarden Send)

If you need an encryption key for a development project (like Python or OpenSSL), you should rather than downloading one. Use a (like OnionShare