Hey Ayyoub,
You can accomplish decryption using a code stage in your automation. Code stages in Blue Prism allow you to call .net code snippets. Because BP's code stage editor does not provide the enhanced features Visual Studio does, I suggest writing and testing your code snippet using VS and then porting it to a code stage in your automation.
A thread on using VB.net to encrypt and decrypt base64 files that you might find useful is
https://stackoverflow.com/questions/5987186/aes-encrypt-string-in-vb-netI hope this helps.
Regards,
Madhur Chopra
------------------------------
Madhur Chopra
Sr. Product Consultant
Blue Prism - Professional Services
America/Los_Angeles
------------------------------