Updated by Alexander Hanel 2016-12-17

File solutions.md Modified

 ```Python

 import base64

 base64.b64encode("49276d206b696c6c696e6720796f757220627261696e206c696b65206120706f69736f6e6f7573206d757368726f6f6d".decode("hex"))

-```

+```

+### Challenge 2  - Fixed XOR

+```Python

+from itertools import cycle

+def xor_mb(message, key):

+    '''Multi-byte XOR of a string message and string key'''

+    return''.join(chr(ord(m_byte)^ord(k_byte)) for m_byte,k_byte in zip(message, cycle(key)))

+xor_mb("1c0111001f010100061a024b53535009181c".decode('hex'), "686974207468652062756c6c277320657965".decode('hex')).encode('hex')

+```

+### Challenge 3 - Single-byte XOR cipher

Created by Alexander Hanel 2016-12-17

View revision

File solutions.md Added

+## Set 1

+### Challenge 1 - Convert hex to base64

+```Python

+import base64

+base64.b64encode("49276d206b696c6c696e6720796f757220627261696e206c696b65206120706f69736f6e6f7573206d757368726f6f6d".decode("hex"))

+```