def signature_algorithm_oid(self): alg = self._backend._ffi.new("X509_ALGOR **") self._backend._lib.X509_get0_signature(self._backend._ffi.NULL, alg, self._x509) self._backend.openssl_assert(alg[0] != self._backend._ffi.NULL) oid = _obj2txt(self._backend, alg[0].algorithm) return x509.ObjectIdentifier(oid)
def test_obj2txt_buffer_sizing(self): # This test exercises a branch for larger than default buffer sizing # in _obj2txt oid_str = ("1.2.3.182382138123818.1293813123.12381238123.3434834834888" ".383488234284.2348234.234819299576434.23482434203") obj = encode_asn1._txt2obj_gc(backend, oid_str) assert decode_asn1._obj2txt(backend, obj) == oid_str
def signature_algorithm_oid(self): alg = self._backend._ffi.new("X509_ALGOR **") self._backend._lib.X509_REQ_get0_signature( self._x509_req, self._backend._ffi.NULL, alg ) self._backend.openssl_assert(alg[0] != self._backend._ffi.NULL) oid = _obj2txt(self._backend, alg[0].algorithm) return x509.ObjectIdentifier(oid)
def signature_hash_algorithm(self): oid = _obj2txt(self._backend, self._x509.sig_alg.algorithm) try: return x509._SIG_OIDS_TO_HASH[oid] except KeyError: raise UnsupportedAlgorithm( "Signature algorithm OID:{0} not recognized".format(oid) )
def signature_hash_algorithm(self): alg = self._backend._ffi.new("X509_ALGOR **") self._backend._lib.X509_REQ_get0_signature(self._x509_req, self._backend._ffi.NULL, alg) self._backend.openssl_assert(alg[0] != self._backend._ffi.NULL) oid = _obj2txt(self._backend, alg[0].algorithm) try: return x509._SIG_OIDS_TO_HASH[oid] except KeyError: raise UnsupportedAlgorithm("Signature algorithm OID:{0} not recognized".format(oid))
def signature_hash_algorithm(self): alg = self._backend._ffi.new("X509_ALGOR **") self._backend._lib.X509_get0_signature(self._backend._ffi.NULL, alg, self._x509) self._backend.openssl_assert(alg[0] != self._backend._ffi.NULL) oid = _obj2txt(self._backend, alg[0].algorithm) try: return x509._SIG_OIDS_TO_HASH[oid] except KeyError: raise UnsupportedAlgorithm( "Signature algorithm OID:{0} not recognized".format(oid))
def _hash_algorithm(backend, cert_id): asn1obj = backend._ffi.new("ASN1_OBJECT **") res = backend._lib.OCSP_id_get0_info(backend._ffi.NULL, asn1obj, backend._ffi.NULL, backend._ffi.NULL, cert_id) backend.openssl_assert(res == 1) backend.openssl_assert(asn1obj[0] != backend._ffi.NULL) oid = _obj2txt(backend, asn1obj[0]) try: return _OIDS_TO_HASH[oid] except KeyError: raise UnsupportedAlgorithm( "Signature algorithm OID: {} not recognized".format(oid))
def _patched_decode_x509_name_entry(backend, x509_name_entry): obj = backend._lib.X509_NAME_ENTRY_get_object(x509_name_entry) backend.openssl_assert(obj != backend._ffi.NULL) data = backend._lib.X509_NAME_ENTRY_get_data(x509_name_entry) backend.openssl_assert(data != backend._ffi.NULL) value = _patched_asn1_string_to_utf8(backend, data) oid = _obj2txt(backend, obj) try: type = _ASN1_TYPE_TO_ENUM[data.type] except KeyError: type = 'Unsupported ASN1 string type' return x509.NameAttribute(x509.ObjectIdentifier(oid), value, type)
def _hash_algorithm(backend, cert_id): asn1obj = backend._ffi.new("ASN1_OBJECT **") res = backend._lib.OCSP_id_get0_info( backend._ffi.NULL, asn1obj, backend._ffi.NULL, backend._ffi.NULL, cert_id ) backend.openssl_assert(res == 1) backend.openssl_assert(asn1obj[0] != backend._ffi.NULL) oid = _obj2txt(backend, asn1obj[0]) try: return _OIDS_TO_HASH[oid] except KeyError: raise UnsupportedAlgorithm( "Signature algorithm OID: {0} not recognized".format(oid) )
def _xep_patched_parse(self, backend, x509_obj): extensions = [] seen_oids = set() for i in range(self.ext_count(backend, x509_obj)): ext = self.get_ext(backend, x509_obj, i) backend.openssl_assert(ext != backend._ffi.NULL) crit = backend._lib.X509_EXTENSION_get_critical(ext) critical = crit == 1 oid = x509.ObjectIdentifier( _obj2txt(backend, backend._lib.X509_EXTENSION_get_object(ext))) # This OID is only supported in OpenSSL 1.1.0+ but we want # to support it in all versions of OpenSSL so we decode it # ourselves. if oid == ExtensionOID.TLS_FEATURE: data = backend._lib.X509_EXTENSION_get_data(ext) parsed = _Integers.load(_asn1_string_to_bytes(backend, data)) value = x509.TLSFeature( [_TLS_FEATURE_TYPE_TO_ENUM[x.native] for x in parsed]) extensions.append(x509.Extension(oid, critical, value)) seen_oids.add(oid) continue try: handler = self.handlers[oid] except KeyError: # Dump the DER payload into an UnrecognizedExtension object der = dump_der(ext, backend) unrecognized = x509.UnrecognizedExtension(oid, der) extensions.append(x509.Extension(oid, critical, unrecognized)) else: ext_data = backend._lib.X509V3_EXT_d2i(ext) if ext_data == backend._ffi.NULL: backend._consume_errors() der = dump_der(ext, backend) unrecognized = x509.UnrecognizedExtension(oid, der) extensions.append(x509.Extension(oid, critical, unrecognized)) else: value = handler(backend, ext_data) extensions.append(x509.Extension(oid, critical, value)) seen_oids.add(oid) return x509.Extensions(extensions)
def signature_algorithm_oid(self): alg = self._backend._lib.OCSP_resp_get0_tbs_sigalg(self._basic) self._backend.openssl_assert(alg != self._backend._ffi.NULL) oid = _obj2txt(self._backend, alg.algorithm) return x509.ObjectIdentifier(oid)
def _patched_decode_general_name(backend, gn): if gn.type == backend._lib.GEN_DNS: # Convert to bytes and then decode to utf8. We don't use # asn1_string_to_utf8 here because it doesn't properly convert # utf8 from ia5strings. name_bytes = _asn1_string_to_bytes(backend, gn.d.dNSName) try: data = name_bytes.decode("utf8") except UnicodeDecodeError: data = name_bytes.hex() # We don't use the constructor for DNSName so we can bypass validation # This allows us to create DNSName objects that have unicode chars # when a certificate (against the RFC) contains them. return x509.DNSName._init_without_validation(data) elif gn.type == backend._lib.GEN_URI: # Convert to bytes and then decode to utf8. We don't use # asn1_string_to_utf8 here because it doesn't properly convert # utf8 from ia5strings. name_bytes = _asn1_string_to_bytes(backend, gn.d.uniformResourceIdentifier) try: data = name_bytes.decode("utf8") except UnicodeDecodeError: # TODO: we could try utf16-be data = name_bytes.hex() # We don't use the constructor for URI so we can bypass validation # This allows us to create URI objects that have unicode chars # when a certificate (against the RFC) contains them. return x509.UniformResourceIdentifier._init_without_validation(data) elif gn.type == backend._lib.GEN_RID: oid = _obj2txt(backend, gn.d.registeredID) return x509.RegisteredID(x509.ObjectIdentifier(oid)) elif gn.type == backend._lib.GEN_IPADD: data = _asn1_string_to_bytes(backend, gn.d.iPAddress) data_len = len(data) if data_len == 8 or data_len == 32: # This is an IPv4 or IPv6 Network and not a single IP. This # type of data appears in Name Constraints. Unfortunately, # ipaddress doesn't support packed bytes + netmask. Additionally, # IPv6Network can only handle CIDR rather than the full 16 byte # netmask. To handle this we convert the netmask to integer, then # find the first 0 bit, which will be the prefix. If another 1 # bit is present after that the netmask is invalid. base = ipaddress.ip_address(data[:data_len // 2]) netmask = ipaddress.ip_address(data[data_len // 2:]) bits = bin(int(netmask))[2:] prefix = bits.find('0') # If no 0 bits are found it is a /32 or /128 if prefix == -1: prefix = len(bits) if "1" in bits[prefix:]: raise ValueError("Invalid netmask") ip = ipaddress.ip_network(base.exploded + u"/{0}".format(prefix)) else: try: ip = ipaddress.ip_address(data) except ValueError: ip = data return x509.IPAddress(ip) elif gn.type == backend._lib.GEN_DIRNAME: return x509.DirectoryName( _decode_x509_name(backend, gn.d.directoryName)) elif gn.type == backend._lib.GEN_EMAIL: # Convert to bytes and then decode to utf8. We don't use # asn1_string_to_utf8 here because it doesn't properly convert # utf8 from ia5strings. data = _asn1_string_to_bytes(backend, gn.d.rfc822Name).decode("utf8") # We don't use the constructor for RFC822Name so we can bypass # validation. This allows us to create RFC822Name objects that have # unicode chars when a certificate (against the RFC) contains them. return x509.RFC822Name._init_without_validation(data) elif gn.type == backend._lib.GEN_OTHERNAME: type_id = _obj2txt(backend, gn.d.otherName.type_id) value = _asn1_to_der(backend, gn.d.otherName.value) return x509.OtherName(x509.ObjectIdentifier(type_id), value) else: # x400Address or ediPartyName raise x509.UnsupportedGeneralNameType( "{0} is not a supported type".format( x509._GENERAL_NAMES.get(gn.type, gn.type)), gn.type)