[IDEA] Add New JavaScript Utility Methods to Generate a Hash of Channel Messages

[jdonextgen]

Describe your use case
I need to be able to generate a hash of messages passing through a channel and be able to send it to receiving systems so that receiving systems can verify message integrity by checking the hash.

Describe the solution you'd like
Add new JavaScript utility methods that leverage the MessageDigest library to generate a hex hash of messages passing through a channel.

[pacmano1]

You can't do https://forums.mirthproject.io/forum/mirth-connect/development/2376-cryptographic-hash-algorithm-in-mirth?p=79508#post79508?

[ChristopherSchultz]

I'm sure that's possible, but a javascript method wrapper in the "standard js API Mirth provides would be a nice addition, even if only for improved readability. Also, it doesn't matter that Mirth includes Guava... Mirth can simple implement the js function however it wants and even re-implement it later if Guava is no longer necessary, etc.