natural commented on a change in pull request #3594: NIFI-3833 Support for 
Encrypted Flow File Repositories
URL: https://github.com/apache/nifi/pull/3594#discussion_r323575686
 
 

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 File path: nifi-docs/src/main/asciidoc/administration-guide.adoc
 ##########
 @@ -2477,6 +2477,13 @@ implementation.
 |`nifi.flowfile.repository.always.sync`|If set to `true`, any change to the 
repository will be synchronized to the disk, meaning that NiFi will ask the 
operating system not to cache the information. This is very expensive and can 
significantly reduce NiFi performance. However, if it is `false`, there could 
be the potential for data loss if either there is a sudden power loss or the 
operating system crashes. The default value is `false`.
 |====
 
+==== Encryption
+
+The FlowFile repository can be configured to encrypt all files as they are 
written to disk.  To enable this encryption,
+set the `nifi.flowfile.repository.always.key.1` property to a 16 or 32 bit 
value like this:
 
 Review comment:
   Great point!
   
   Still working on the key management + documentation bits.  Will update when 
I've got more.

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