How to use container_bytes method in autotest

Best Python code snippet using autotest_python Github


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1import binascii2import hashlib3import re as regex4from collections import OrderedDict5from enum import Enum6from oscrypto import keys as k7class ContainerTypes(Enum):8 Private = "Private"9 PKCS12 = "PKCS12"10 X509 = "X509"11 Undefined = None12class AbstractContainerReader(object):13 def __init__(self):14 self.bytes = None15 self.type = None16 self.password = None17 self.asn1 = None18 self._is_parsed = False19 @classmethod20 def by_bytes(cls, container_bytes, password=None):21 container = cls()22 container.bytes = container_bytes23 container.type = ContainerDetector.detect_type(container_bytes, password=password)24 container.password = password25 return container26 def is_parsed(self):27 return self._is_parsed28 def parse(self):29 '''30 Parses the bytes with a asn1 parser31 :return: None32 '''33 raise NotImplementedError()34 def der_dump(self):35 '''36 Dumpes the asn1 structure back to a uncrypted bytearray in DER format37 :return: bytearray38 '''39 raise NotImplementedError()40 def public_key_hash(self):41 '''42 Return a public key identifier. The identifier can be compared with others to find the43 private key/certificate pair44 :return: Identifier45 '''46 raise NotImplementedError()47 @classmethod48 def is_type(cls, container_bytes, password=None):49 '''50 Detects if the bytes have this ASN1 structure51 :return: Boolean52 '''53 raise NotImplementedError()54 def _sha256(self, value):55 '''56 Makes a sha256 hash over a string value. Formats the hash to be readable57 :param value: input58 :return: formated hash59 '''60 value = value.encode('utf-8')61 sha = hashlib.sha256()62 sha.update(value)63 hash_bytes = sha.digest()64 return self._format_hash(hash_bytes)65 def _format_hash(self, hash_bytes):66 hash_hex = binascii.hexlify(hash_bytes)67 hash_upper = hash_hex.decode('utf-8').upper()68 formated_hash = ""69 for part in regex.findall('..', hash_upper):70 formated_hash += part + ":"71 return formated_hash[:-1]72 def _raise_if_wrong_algorithm(self):73 algorithm_lower = self.algorithm().lower()74 wrong_algorihm = not (algorithm_lower == "rsa" or algorithm_lower == "ec")75 if wrong_algorihm:76 raise Exception("Detected unsupported algorithm " + str(algorithm_lower))77 def algorithm(self):78 '''79 :return: "rsa" or "ec"80 '''81 raise NotImplementedError()82class PrivateReader(AbstractContainerReader):83 @classmethod84 def is_type(cls, container_bytes, password=None):85 cert = None86 try:87 if password is None:88 cert = k.parse_private(container_bytes)89 else:90 cert = k.parse_private(container_bytes, password=password)91 cert.native92 except Exception:93 return False94 try:95 if cert.native["private_key"]["modulus"] is not None:96 return True97 except Exception:98 pass99 try:100 if cert.native["private_key"]["public_key"] is not None:101 return True102 except Exception:103 pass104 return False105 def parse(self):106 assert self.type == ContainerTypes.Private107 if self.password is None:108 self.asn1 = k.parse_private(self.bytes)109 else:110 self.asn1 = k.parse_private(self.bytes, password=self.password)111 self.asn1.native112 self._raise_if_wrong_algorithm()113 self._is_parsed = True114 def der_dump(self):115 return self.asn1.dump()116 def public_key_hash(self):117 if self.algorithm() == "rsa":118 ident = self.asn1.native["private_key"]["modulus"]119 elif self.algorithm() == "ec":120 ident = self.asn1.native["private_key"]["public_key"]121 return self._sha256(str(ident))122 def algorithm(self):123 return self.asn1.algorithm124class PKCS12Reader(AbstractContainerReader):125 @classmethod126 def is_type(cls, container_bytes, password=None):127 try:128 if password is None:129 k.parse_pkcs12(container_bytes)130 else:131 k.parse_pkcs12(container_bytes, password=password)132 return True133 except Exception:134 return False135 def parse(self):136 assert self.type == ContainerTypes.PKCS12137 if self.password is None:138 (self.privatekey, self.cert, self.certs) = k.parse_pkcs12(self.bytes)139 else:140 (self.privatekey, self.cert, self.certs) = k.parse_pkcs12(self.bytes, password=self.password)141 self._raise_if_wrong_algorithm()142 self._is_parsed = True143 def algorithm(self):144 return self.privatekey.algorithm145 def public_key_hash(self):146 if self.algorithm() == "rsa":147 ident = self.privatekey.native["private_key"]["modulus"]148 elif self.algorithm() == "ec":149 ident = self.privatekey.native["private_key"]["public_key"]150 return self._sha256(str(ident))151 def public_key(self):152 '''153 :return: the main X509 cert in this container154 :rtype X509Container155 '''156 data = self.cert.dump()157 container = X509Reader.by_bytes(data)158 container.parse()159 return container160 def private_key(self):161 '''162 :return: The private key in this container163 :rtype PrivateContainer164 '''165 data = self.privatekey.dump()166 container = PrivateReader.by_bytes(data)167 container.parse()168 return container169 def further_publics(self):170 '''171 :return: A list of X509 certs172 :rtype [X509Container]173 '''174 others = []175 for cer in self.certs:176 data = cer.dump()177 x509 = X509Reader.by_bytes(data)178 x509.parse()179 others.append(x509)180 return others181class X509Reader(AbstractContainerReader):182 @classmethod183 def is_type(cls, container_bytes, password=None):184 try:185 cert = k.parse_certificate(container_bytes)186 cert.native187 return True188 except Exception:189 return False190 def parse(self):191 assert self.type == ContainerTypes.X509192 self.asn1 = k.parse_certificate(self.bytes)193 self.asn1.native194 self._raise_if_wrong_algorithm()195 self._is_parsed = True196 def der_dump(self):197 return self.asn1.dump()198 def algorithm(self):199 return self.asn1.native["tbs_certificate"]["subject_public_key_info"]["algorithm"]["algorithm"]200 def public_key_hash(self):201 if self.algorithm() == "rsa":202 ident = self.asn1.native["tbs_certificate"]["subject_public_key_info"]["public_key"]["modulus"]203 elif self.algorithm() == "ec":204 ident = self.asn1.native["tbs_certificate"]["subject_public_key_info"]["public_key"]205 return self._sha256(str(ident))206 def is_cert_of(self, container):207 '''208 Compares the public keys of the container and this209 :param container: a private key container210 :type container: AbstractContainerReader211 :return: Boolean212 '''213 ident = container.public_key_hash()214 myident = self.public_key_hash()215 return ident == myident216 def serial_number(self):217 return self.asn1.serial_number218 def cname(self):219 return self.asn1.subject.native["common_name"]220class ContainerReaderException(Exception):221 pass222class ContainerDetector(object):223 _readers = OrderedDict([224 (ContainerTypes.X509, X509Reader),225 (ContainerTypes.PKCS12, PKCS12Reader),226 (ContainerTypes.Private, PrivateReader),227 ])228 @classmethod229 def detect_type(cls, container_bytes, password=None):230 '''231 Detects the type of an ASN.1 container232 :param container_bytes: bytes of the container in PEM or DER233 :param password: password of the container if encrypted234 :return: Type of the container235 :rtype ContainerTypes236 '''237 for ct, reader in cls._readers.items():238 if reader.is_type(container_bytes, password=password):239 return ct240 return ContainerTypes.Undefined241 @classmethod242 def factory(cls, container_bytes, password=None):243 '''244 Creates an instance of an ASN.1 container reader245 :param container_bytes: bytes of the container in PEM or DER246 :param password: password of the container if encrypted247 :return: container reader248 :rtype object derived of AbstractContainerReader249 '''250 reader = cls._readers[cls.detect_type(container_bytes, password)]251 if reader:252 return reader.by_bytes(container_bytes, password)...

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1from .utils.common_functions import to_int2class Container:3 def __init__(self,container_bytes: bytearray):4 self.container_bytes = container_bytes5 self.total_files = to_int(container_bytes[:4])6 self.idx_tbl_offset = to_int(container_bytes[4:8])7 self.load_files_table()8 self.load_files()9 10 def load_files_table(self):11 """12 Load the start offset for each file in the container13 """14 self.files_offset = []15 for i in range(self.total_files):16 offset = to_int(self.container_bytes[17 self.idx_tbl_offset + i * 4 : self.idx_tbl_offset + i * 4 + 418 ])19 self.files_offset.append(offset)20 def load_files(self):21 """22 Load each file into a list23 """24 self.files = []25 for i in range(self.total_files):26 if i == self.total_files -1:27 offset = bytearray(self.container_bytes[self.files_offset[i] : ])28 else:29 offset = bytearray(self.container_bytes[30 self.files_offset[i] : self.files_offset[i + 1]31 ])...

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