What is your goal?
I am testing out the encryption modules so I can figure out how to store some data in a data store.
What is the problem & what have you tried?
I am creating a test using the AES Encryptor (Advanced) and AES Decryptor (Advanced). I have created my keychain and the data I want to encrypt which is working. The results I have the Data, Initialization Vector, and the Authentication Tag. When I turn around and try to decrypt it I receive an error "invalid Authentication tag length: 24) i see the output from the encryptor the Initialization Vector is hexidecimal. I have tried to convert that and still getting the error message. I will upload pictures below.
Screenshots (scenario flow, module settings, errors)
For GCM Encryption, the Initialization Vector will be converted and output as a Hexadecimal, even if you selected UTF-8.
This is demonstrated by the different IV values in the input/output bundles in the Encryption module, if hexadecimal is NOT selected:
Hence, in the Decryption module, you need to select Hexadecimal, IF you are reusing or directly mapping the Encryption module’s output IV variable.
This is clearly explained in Step 5: Decrypt the message (GCM ciphor algorithm) — AES (Advanced Encryption Standard) - Help Center, which says:
You could also leave the IV field empty in the Encryption module, and one will be generated for you (as a hexadecimal).
If in doubt, always check the documentation first.
For more information, see:
Hope this helps! If you are still having trouble, please provide more details.
— @samliew
Thank you very much. I had not seen that documentation
No problem, glad I could help with your question:
"Data encryption and decryption" 
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— @samliew
