thanks for the help. I was able to find the cause or the issue. I was trying to play the audio wav file in Postman but the API was returning random data as shown in the picture above and for some reason, the Postman was not able to process the file to play. I thought the decryption is not done properly.

Once I deployed and ran the code in my web application (voice recording solution), the decryption and audio files were playable.

So again thanks all for the help.

PS: Both the scripts are working.