def _parse(self, contents):
self._rawdata = contents
self._tlvdata = TLV_utils.unpack(contents)
tmp = TLV_utils.tlv_find_tag(self._tlvdata, 0xEA, num_results = 1)
if len(tmp) == 0:
raise ValueError, "Can't parse information file, tag 0xEA not found"
tmp = TLV_utils.tlv_find_tag(tmp, 0x85, num_results = 1)
if len(tmp) == 0:
raise ValueError, "Can't parse information file, tag 0x85 not found"
self._mainblob = tmp[0][2]
tmp = self._mainblob
some_id, tmp = tmp[:4], tmp[4:]
ascii_field_len = ord(tmp[0])
tmp = tmp[1:]
ascii_field, tmp = tmp[:ascii_field_len], tmp[ascii_field_len:]
self._maindata = ascii_field.split(" ")
if len(tmp) > 0:
if tmp[0] == "\x01":
tmp = tmp[1:]
birthdate_bin, tmp = tmp[:4], tmp[4:]
birthdate = binascii.b2a_hex(birthdate_bin)
self._birthdate = datetime.date( int(birthdate[0:4]), int(birthdate[4:6]), int(birthdate[6:8]) )
if len(tmp) > 0:
print "Warning: unparsed data trailing: %r" % tmp
def _parse(self, contents):
self._rawdata = contents
self._tlvdata = TLV_utils.unpack(contents)
tmp = TLV_utils.tlv_find_tag(self._tlvdata, 0xEA, num_results=1)
if len(tmp) == 0:
raise ValueError, "Can't parse information file, tag 0xEA not found"
tmp = TLV_utils.tlv_find_tag(tmp, 0x85, num_results=1)
if len(tmp) == 0:
raise ValueError, "Can't parse information file, tag 0x85 not found"
self._mainblob = tmp[0][2]
tmp = self._mainblob
some_id, tmp = tmp[:4], tmp[4:]
ascii_field_len = ord(tmp[0])
tmp = tmp[1:]
ascii_field, tmp = tmp[:ascii_field_len], tmp[ascii_field_len:]
self._maindata = ascii_field.split(" ")
if len(tmp) > 0:
if tmp[0] == "\x01":
tmp = tmp[1:]
birthdate_bin, tmp = tmp[:4], tmp[4:]
birthdate = binascii.b2a_hex(birthdate_bin)
self._birthdate = datetime.date(int(birthdate[0:4]),
int(birthdate[4:6]),
int(birthdate[6:8]))
if len(tmp) > 0:
print "Warning: unparsed data trailing: %r" % tmp
def parse_DG1(self, contents):
structure = TLV_utils.unpack(contents)
try:
mrz = TLV_utils.tlv_find_tag(structure, 0x5F1F, 1)[0][2]
except IndexError:
raise PassportParseError, "Could not find MRZ information in DG1"
# Length of an MRZ line is either 30+5 or 31+5 or 39+5, depending on document type. (LDS technical report 2004, section 16.1)
mrz_data = (mrz[:len(mrz)/2], mrz[len(mrz)/2:])
self.dg1_mrz = mrz_data
self._parse_mrz(mrz_data)
def parse_DG1(self, contents):
structure = TLV_utils.unpack(contents)
try:
mrz = TLV_utils.tlv_find_tag(structure, 0x5F1F, 1)[0][2]
except IndexError:
raise PassportParseError, "Could not find MRZ information in DG1"
# Length of an MRZ line is either 30+5 or 31+5 or 39+5, depending on document type. (LDS technical report 2004, section 16.1)
mrz_data = (mrz[:len(mrz) / 2], mrz[len(mrz) / 2:])
self.dg1_mrz = mrz_data
self._parse_mrz(mrz_data)
def process_apdu(self, apdu):
if apdu.cla & 0x0c in (0x0c, 0x08):
tlv_data = TLV_utils.unpack(apdu.data, with_marks = apdu.marks, include_filler=True)
tlv_data = self.encrypt_command(tlv_data)
tlv_data = self.authenticate_command(apdu, tlv_data)
data = TLV_utils.pack(tlv_data, recalculate_length = True)
new_apdu = C_APDU(apdu, data = data)
return new_apdu
else:
return apdu
def process_rapdu(self, rapdu):
result = rapdu
if self.last_c_apdu.cla & 0x0c in (0x0c, 0x08):
tlv_c_data = TLV_utils.unpack(self.last_c_apdu.data)
must_authenticate = False
must_decrypt = False
for data in tlv_c_data:
if data[0] & ~0x01 == 0xBA:
for response_template in data[2]:
if response_template[0] == 0x8E:
must_authenticate = True
if response_template[0] & ~0x01 in (0x84, 0x86):
must_decrypt = True
if must_authenticate or must_decrypt:
tlv_data = TLV_utils.unpack(rapdu.data, include_filler=True)
try:
if must_authenticate:
tlv_data = self.authenticate_response(tlv_data)
if must_decrypt:
tlv_data = self.decrypt_response(tlv_data)
#data = TLV_utils.pack(tlv_data, recalculate_length = True)
data, sw = self.deformat_response(tlv_data, rapdu.sw)
new_apdu = R_APDU(rapdu, data = data, sw = sw)
result = new_apdu
except ValueError:
print "Warning: Can't authenticate/decrypt response due to exception being raised"
traceback.print_exc(limit=2)
return result
def cmd_passive_auth(self, verbose=1):
"Perform passive authentication"
hashes = {}
result = ""
i = 0
for name in ("DG1", "DG2", "SOD"):
fid = None
for n, f in self.INTERESTING_FILES:
if n == name:
fid = f
break
if fid is None:
return
i += 1
result = self.open_file(fid, 0x0c)
if self.check_sw(result.sw):
contents, sw = self.read_binary_file()
#self.last_result = R_APDU(contents + self.last_sw)
if name != "SOD":
hashes[i] = crypto_utils.hash("SHA", contents)
else:
result = self.verify_cms(contents[4:])
#print hexdump(result)
#print "DG1: %s" % hexdump(hashes[i])
#print "DG2: %s" % hexdump(hashes[2])
res = TLV_utils.tlv_find_tag(TLV_utils.unpack(result), 0x04)
if len(res) == 0:
print "failed to verify EF.SOD"
return
else:
print "verified EF.SOD"
i = 0
for tag, length, hash in res:
i += 1
if hexdump(hashes[i]) == hexdump(hash):
print "DG%d hash verified: %s" % (i, binascii.b2a_hex(hash))
else:
print "DG%d hash failed:" % i
print "was: %s" % binascii.b2a_hex(hashes[i])
print "expected: %s" % binascii.b2a_hex(hash)
return
def cmd_passive_auth(self, verbose=1):
"Perform passive authentication"
hashes = {}
result = ""
i = 0
for name in ("DG1", "DG2", "SOD"):
fid = None
for n, f in self.INTERESTING_FILES:
if n == name:
fid = f
break
if fid is None:
return
i += 1
result = self.open_file(fid, 0x0c)
if self.check_sw(result.sw):
contents, sw = self.read_binary_file()
#self.last_result = R_APDU(contents + self.last_sw)
if name != "SOD":
hashes[i] = crypto_utils.hash("SHA", contents)
else:
result = self.verify_cms(contents[4:])
#print hexdump(result)
#print "DG1: %s" % hexdump(hashes[i])
#print "DG2: %s" % hexdump(hashes[2])
res = TLV_utils.tlv_find_tag(TLV_utils.unpack(result), 0x04)
if len(res) == 0:
print "failed to verify EF.SOD"
return
else:
print "verified EF.SOD"
i = 0
for tag, length, hash in res:
i += 1
if hexdump(hashes[i]) == hexdump(hash):
print "DG%d hash verified: %s" % (i, binascii.b2a_hex(hash))
else:
print "DG%d hash failed:" % i
print "was: %s" % binascii.b2a_hex(hashes[i])
print "expected: %s" % binascii.b2a_hex(hash)
return
def list_x(self, x):
"Get a list of x objects, where x is one of 0 (DFs) or 1 (EFs) or 2 (DFs and EFs)"
## FIXME I just guessed this information
result = self.send_apdu(C_APDU(self.APDU_LIST_X, p1=x))
files = []
unpacked = TLV_utils.unpack(result.data)
for tag, length, value in unpacked:
if isinstance(value, list):
for tag, length, value in value:
if tag == 0x86:
files.append(value)
else:
if tag == 0x86:
files.append(value)
return files
def parse(self, config):
structure = TLV_utils.unpack(config)
for data in structure:
tag, length, value = data
if tag == 0x80:
self.mode = ord(value[0]) & 1
algorithm = (ord(value[0]) >> 2) & 0x7
self.algorithm = algorithm
elif tag in (0x83, 0x84):
self.keyref = ord(value)
self.keytype = tag
elif tag == 0x85:
self.iv = "\x00" * 8
elif tag == 0x87:
self.iv = value
elif tag == 0x88:
self.iv = None ## FIXME
else:
print "Warning: Unknown MSE parameters: tag 0x%02x, length 0x%02x, value: %s" % (tag, length, utils.hexdump(value, short=True))
def from_data(cls, data, offset = 0, length = None, **kwargs):
if length is None:
length = len(data) - offset
structure = TLV_utils.unpack(data[offset:offset+length])
return cls(structure=structure, **kwargs)
def verify_cms(self, data):
"""Verify a pkcs7 SMIME message"""
from M2Crypto import SMIME, X509, BIO
import base64, TLV_utils, os
data3 = "-----BEGIN PKCS7-----\n"
data3 += base64.encodestring(data)
data3 += "-----END PKCS7-----"
#print data3
p7_bio = BIO.MemoryBuffer(data3)
# Instantiate an SMIME object.
s = SMIME.SMIME()
# TODO: ugly hack for M2Crypto
body = TLV_utils.tlv_find_tag(TLV_utils.unpack(data), 0xA0, 1)[0][2]
thecert = TLV_utils.tlv_find_tag(body, 0xA0, 2)[1][2]
cert_bio = BIO.MemoryBuffer(TLV_utils.pack(thecert))
# Load the signer's cert.
x509 = X509.load_cert_bio(cert_bio, format=0)
sk = X509.X509_Stack()
sk.push(x509)
s.set_x509_stack(sk)
country = str(x509.get_issuer()).split('/')[1][2:]
#print country
cacert = country + "-cacert.der"
#print cacert
msgErr = "couldn't parse certificate to determine URL for CACert, search the intertubes,"
msg = "download CACert (convert to DER if necessary) and save it as \n\"%s\"" % cacert
if not os.path.isfile(cacert):
try:
v = x509.get_ext("certificatePolicies").get_value()
start = v.find("CPS: ")
if start != -1:
url = v[start + 5:-1]
print "visit %s" % url, msg
else:
print msgErr, msg
except Exception:
print msgErr, msg
return ""
# Load the signer's CA cert.
st = X509.X509_Store()
#st.load_info('main')
x509CA = X509.load_cert(cacert, format=0)
st.add_x509(x509CA)
s.set_x509_store(st)
# Load the data, verify it.
#p7, data = SMIME.smime_load_pkcs7_bio(p7_bio)
p7 = SMIME.load_pkcs7_bio(p7_bio)
v = s.verify(p7)
return v
def parse_DG7(self, contents):
self.dg7_tlv = TLV_utils.unpack(contents)
def from_data(cls, data, offset=0, length=None, **kwargs):
if length is None:
length = len(data) - offset
structure = TLV_utils.unpack(data[offset:offset + length])
return cls(structure=structure, **kwargs)
def verify_cms(self, data):
"""Verify a pkcs7 SMIME message"""
from M2Crypto import SMIME, X509, BIO
import base64, TLV_utils, os
data3 = "-----BEGIN PKCS7-----\n"
data3 += base64.encodestring(data)
data3 += "-----END PKCS7-----"
#print data3
p7_bio = BIO.MemoryBuffer(data3)
# Instantiate an SMIME object.
s = SMIME.SMIME()
# TODO: ugly hack for M2Crypto
body = TLV_utils.tlv_find_tag(TLV_utils.unpack(data), 0xA0, 1)[0][2]
thecert = TLV_utils.tlv_find_tag(body, 0xA0, 2)[1][2]
cert_bio = BIO.MemoryBuffer(TLV_utils.pack(thecert))
# Load the signer's cert.
x509 = X509.load_cert_bio(cert_bio, format=0)
sk = X509.X509_Stack()
sk.push(x509)
s.set_x509_stack(sk)
country = str(x509.get_issuer()).split('/')[1][2:]
#print country
cacert = country + "-cacert.der"
#print cacert
msgErr = "couldn't parse certificate to determine URL for CACert, search the intertubes,"
msg = "download CACert (convert to DER if necessary) and save it as \n\"%s\"" % cacert
if not os.path.isfile(cacert):
try:
v = x509.get_ext("certificatePolicies").get_value()
start = v.find("CPS: ")
if start != -1:
url = v[start + 5:-1]
print "visit %s" % url, msg
else:
print msgErr, msg
except Exception:
print msgErr, msg
return ""
# Load the signer's CA cert.
st = X509.X509_Store()
#st.load_info('main')
x509CA = X509.load_cert(cacert, format=0)
st.add_x509(x509CA)
s.set_x509_store(st)
# Load the data, verify it.
#p7, data = SMIME.smime_load_pkcs7_bio(p7_bio)
p7 = SMIME.load_pkcs7_bio(p7_bio)
v = s.verify(p7)
return v
def parse_DG7(self, contents):
self.dg7_tlv = TLV_utils.unpack(contents)
