def compute(self, message):
self.ihvs = list(self.IVs)
message += self.pad(message)
for block in _misc.as_bytes_blocks(message, self.block_length / 8):
self.process_block(block)
self.finalize()
return self
def checksum(message):
checksum_bytes = [0 for i in xrange(16)]
previous = 0
for block in as_bytes_blocks(message, 16):
for i, char in enumerate(block):
# careful, RFC1319 is wrong there. - rfcc209
# Set C[j] to S[c xor L]
# should be
# Set C[j] to (C[j] xor S[c xor L])
checksum_bytes[i] = checksum_bytes[i] ^ Md2_u.pi_subst[ord(char) ^ previous]
previous = checksum_bytes[i]
checksum_string = str().join(chr(i) for i in checksum_bytes)
return checksum_string
def checksum(message):
checksum_bytes = [0 for i in xrange(16)]
previous = 0
for block in as_bytes_blocks(message, 16):
for i, char in enumerate(block):
# careful, RFC1319 is wrong there. - rfcc209
# Set C[j] to S[c xor L]
# should be
# Set C[j] to (C[j] xor S[c xor L])
checksum_bytes[i] = checksum_bytes[i] ^ Md2_u.pi_subst[
ord(char) ^ previous]
previous = checksum_bytes[i]
checksum_string = str().join(chr(i) for i in checksum_bytes)
return checksum_string
def compute(self, message):
self.ihvs = list(self.IVs)
message += self.pad(message)
block_bytes = [0 for i in xrange(16)]
blocks = as_bytes_blocks(message, 16)
for block in blocks:
xor = bytes([0 for i in xrange(16)])
block_bytes = [ord(i) for i in block]
for i in xrange(16):
xor[i] = self.ihvs[i] ^ block_bytes[i]
previous = Byte(0)
for round_ in xrange(18):
for l in [self.ihvs, block_bytes, xor]:
for k in xrange(16):
previous = l[k] = l[k] ^ Md2_u.pi_subst[previous]
previous = previous + round_
return self
def compute(self, message):
self.ihvs = list(self.IVs)
message += self.pad(message)
block_bytes = [0 for i in xrange(16)]
blocks = as_bytes_blocks(message, 16)
for block in blocks:
xor = bytes([0 for i in xrange(16)])
block_bytes = [ord(i) for i in block]
for i in xrange(16):
xor[i] = self.ihvs[i] ^ block_bytes[i]
previous = Byte(0)
for round_ in xrange(18):
for l in [self.ihvs, block_bytes, xor]:
for k in xrange(16):
previous = l[k] = l[k] ^ Md2_u.pi_subst[previous]
previous = previous + round_
return self
