b32c.py

# Convert between "base-32" and ASCII
# Written for python 3, but seems to work in python 2 as well
from sys import argv

def int2base(x,b,alphabet='0123456789abcdefghijklmnopqrstuvwxyz'):
    # Original function courtesy of http://stackoverflow.com/a/2267721/1175714
    # Most of the function is omitted; assuming x is non-negative real, as that's what an ASCII char is.
    rets=''
    while x>0:
        x,idx = divmod(x,b)
        rets = alphabet[idx] + rets
    return rets

def b32_ascii(src):
  a = src
  a2 = "%x" % int(a,32)
  b = ''
  i = 0
  while 1:
    if i >= len(a2): break
    b = b + chr(int(a2[i] + a2[i+1],16))
    i += 2
  print(b)


def ascii_b32(src):
  a = src
  b = ''
  for i in a:
    b = b + int2base(ord(i),16)
  print(int2base(int(b,16),32))

if len(argv) >= 2:
  if argv[1] == "b":
    b32_ascii(argv[2])
  elif argv[1] == "a":
    ascii_b32(argv[2])
else:
  print("=========================================================")
  print("Usage:\t\tpython %s [option] [string]" % argv[0])
  print("Options:")
  print("  b:\t\tconvert base-32 string to ASCII")
  print("  a:\t\tconvert ASCII string to base-32")
  print("=========================================================")