I'm tring to determine the type of Encryption being used on a certain frequency. I.E. APD, DES-OFB, AES256. Is there a software program that can determine this. I have KFDTool that i used to load in some keys in to a radio. I was able to hear the radio traffic that was encrypted. I listened to all three audio samples. I feel that i can hear a difference between them. But it might be more in my head. thanks for the replies