I'm trying to do a very simple thing, namely using a 64-bit password and a 64-bit plaintext (both in hex) and encrypt it with simple old DES.
my script looks like this:
plaintext=`echo -n "$2" | sed 's/\(..\)/\\\x\1/g'` key=$1 printf "$plaintext" | openssl enc -nosalt -e -des -nopad -K "$key" -iv "0000000000000000" | od --format=x1 --width=32 --address-radix=n | sed 's/ //g'
I execute and get the following result:
./des_enc 5B5A57676A56676E 675A69675E5A6B5A b617e2c84a4fba2149dd7132433031392257b99d9284b1031c351c15825aca52
The problem is there's too much data coming back from openssl, I expect to only get 64-bits of data instead I get 512. I don't know how to explicit request a 64-bit version of DES, is it even possible?
Note: The values used above are from "H. Katzan, The Standard Data Encryption Algorithm, pp75-94, Petrocelli Books Inc., New York, 1977" is:
Key: 5B5A57676A56676E Plaintext: 675A69675E5A6B5A Ciphertext: 974AFFBF86022D1F