I am trying to do a known plaintext attack on DES-OFB through crack.sh. I have been having trouble lately. I keep getting blank text file back with no keys returned. Does anybody know if DES-OFB is supported by Crack.sh? I tried contacting them but did not get a response. Here is what I have last submitted.
$ ./des_kpt.py parse -p 6c42e85de2e82693 -m fffffffffffffff -c 57ef7750e24ab08f PT = 6c42e85de2e82693 M = ffffffffffffffff CT = 57ef7750e24ab08f E = 0 crack.sh Submission = $98$bELoXeLoJpP////////1fvd1DiSrCP
I am not sure what exactly the mask dose either. I set it to all F's. Here is the key if it helps. There is 3 due to what DES_KPT spits back out when I run a decrypt command, which also does not produce correct PT.
Any help or other tools is appreciated!