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 FileMaker Pro Custom Functions

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ChaosDecrypt ( cipherText ; key )

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  Average rating: 4.2  (35 votes)
  Discuss this Custom Function

Jeremy Bante,

Decrypt text enciphered by the ChaosEncrypt() function

Sample Input:
ChaosDecrypt ( "蔿괴㼀ኒጏ륮縤ᖙ㇤ヰꣿ톃鋦⛤簘" ; "The super-secret key" )
Sample Output:
The original text

 Then copy & paste into FileMaker Advanced's Edit Custom Function window.

Click here to copy To Clip Manager if you have myFMbutler's Clip Manager installed


Uses chaotic permutations of the key to create an decrypted version of cipherText that was created by the ChaosEncrypt() function. This function uses a psuedo-chaotic stream cipher algorithm adapted to the constraints of FileMaker custom functions.

This function has not been subjected to rigorous cryptanalysis, and the author does not warranty the security of encrypted text.

Newer versions of this function are very unlikely to be backwards compatible.

Note: these functions are not guaranteed or supported by Please contact the individual developer with any questions or problems.

This is my Custom Function and I want to edit it


5 most recent comments | Show all 12 comments

I should specify that the script is basically, set variable of $value; ChaosDecrypt and then a set field step to set this $value into my field.

P Sanchez, Jacksonville, FL
May 17, 2011 7:37am

So are you encrypting "SSN# 001-22-3333", "001-22-3333", or "001223333"? I wont get a chance to look into this until tonight, but I'll let you know what I find and update this page with any fix I come up with.

Jeremy Bante, San Mateo, CA, USA
May 17, 2011 8:05am

Yep. I tried both with and without the dashes. Neither worked on the decryption. Not sure if I am doing something wrong or not...

May 17, 2011 9:54am

For the public record, Paula and I looked into the issue, and it turned out that there was nothing wrong with the function.

Jeremy Bante, San Mateo, CA, USA
May 23, 2011 8:03am

very good code! excellent! found no bugs will post if I do!

Brian Donovan, Mexico
February 21, 2015 12:18pm

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