Documentation
# DES-OFB8
# From FIPS Pub 81 Appendix E


# OFB8-DES.Encrypt and OFB8-DES.Decrypt 
Klen = 8
Ilen = 8
Len = 10
Key = 0123456789abcdef
IV = 1234567890abcdef
#Plaintext = "Now is the"
Plaintext = 4e6f7720697320746865
Ciphertext = f34a2850c9c64985d684