def hmac_md5(self,key,message):
blocksize = md5().block_size
if len(key) > blocksize:
key = md5.digest(key)
elif len(key) < blocksize:
pad = '\x00'* (blocksize - len(key))
key += pad
o_key_pad = [ord('\x5c')^ord(b) for b in key]
i_key_pad = [ord('\x36')^ord(b) for b in key]
#print o_key_pad
#print i_key_pad
format = ">" + "B"*(blocksize)
o_key_pad = struct.pack(format, *o_key_pad)
i_key_pad = struct.pack(format, *i_key_pad)
self.verboseprint("o_key_pad: {}\ni_key_pad: {}\nkey: {}".format(o_key_pad.encode("hex"), i_key_pad.encode("hex"), key.encode("hex")))
inner = md5(i_key_pad + message).digest()
result = md5(o_key_pad + inner).digest()
self.verboseprint("Result = {} = md5( o_key_pad || md5( i_key_pad || message ) )".format(result.encode("hex")))
return result
def hmac_md5(self, key, message):
blocksize = md5().block_size
if len(key) > blocksize:
key = md5.digest(key)
elif len(key) < blocksize:
pad = '\x00' * (blocksize - len(key))
key += pad
o_key_pad = [ord('\x5c') ^ ord(b) for b in key]
i_key_pad = [ord('\x36') ^ ord(b) for b in key]
#print o_key_pad
#print i_key_pad
format = ">" + "B" * (blocksize)
o_key_pad = struct.pack(format, *o_key_pad)
i_key_pad = struct.pack(format, *i_key_pad)
self.verboseprint("o_key_pad: {}\ni_key_pad: {}\nkey: {}".format(
o_key_pad.encode("hex"), i_key_pad.encode("hex"),
key.encode("hex")))
inner = md5(i_key_pad + message).digest()
result = md5(o_key_pad + inner).digest()
self.verboseprint(
"Result = {} = md5( o_key_pad || md5( i_key_pad || message ) )".
format(result.encode("hex")))
return result
def hexdigest(md5): #XXX: argh. 1.5.2 doesn't have this.
return ''.join(map(lambda x: hex(ord(x))[2:], md5.digest()))
def hexdigest(md5): #XXX: argh. 1.5.2 doesn't have this.
return ''.join(map(lambda x: hex(ord(x))[2:], md5.digest()))
def md5optimal(a_file, block_size=65536):
buf = a_file.read(block_size)
while len(buf) > 0:
md5.update(buf)
buf = a_file.read(block_size)
return md5.digest()
def expand_to_128bit(key): return md5.digest(key)
def md5optimal(a_file, block_size=65536):
buf = a_file.read(block_size)
while len(buf) > 0:
md5.update(buf)
buf = a_file.read(block_size)
return md5.digest()