CoolProp
diff --git a/‎.gitignore‎
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diff --git a/‎README.md‎
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diff --git a/‎REFPROP.zip.gpg‎
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diff --git a/‎decrypt.sh‎
100644100755 b/‎decrypt.sh‎
100644100755
@@ -1 +1,2 @@
-REFPROP.zip
+REFPROP.zip
+passphrase
@@ -12,11 +12,13 @@ choco install gpg4win
 
 ## Encryption
 
+Choose your passphrase and place in the ``passphrase`` file. Perhaps auto-generated.
+
 Execute:
 ```
-gpg --symmetric --cipher-algo AES256 REFPROP.zip
+gpg --passphrase `cat passphrase` -c --symmetric --cipher-algo AES256 --batch REFPROP.zip
 ```
-which generates the encrypted file ``REFPROP.zip.gpg``. Generate an uncrackable password, and store that password somewhere safe. That will be used to decrypt the source
+which generates the encrypted file ``REFPROP.zip.gpg``. 
 
 ## Actions setup
Original file line number	Diff line number	Diff line change
`@@ -1 +1,2 @@`
`1`		`-REFPROP.zip`
	`1`	`+REFPROP.zip`
	`2`	`+passphrase`