python类Null()的实例源码

def valueDecoder(self, substrate, asn1Spec,
                     tagSet=None, length=None, state=None,
                     decodeFun=None, substrateFun=None,
                     **options):

        if tagSet[0].tagFormat != tag.tagFormatSimple:
            raise error.PyAsn1Error('Simple tag format expected')

        head, tail = substrate[:length], substrate[length:]

        component = self._createComponent(asn1Spec, tagSet)

        if head:
            raise error.PyAsn1Error('Unexpected %d-octet substrate for Null' % length)

        return component, tail

def valueDecoder(self, substrate, asn1Spec,
                     tagSet=None, length=None, state=None,
                     decodeFun=None, substrateFun=None,
                     **options):

        if tagSet[0].tagFormat != tag.tagFormatSimple:
            raise error.PyAsn1Error('Simple tag format expected')

        head, tail = substrate[:length], substrate[length:]

        component = self._createComponent(asn1Spec, tagSet)

        if head:
            raise error.PyAsn1Error('Unexpected %d-octet substrate for Null' % length)

        return component, tail

def valueDecoder(self, fullSubstrate, substrate, asn1Spec, tagSet,
                     length, state, decodeFun, substrateFun):
        head, tail = substrate[:length], substrate[length:]
        r = self._createComponent(asn1Spec, tagSet)
        if head:
            raise error.PyAsn1Error('Unexpected %d-octet substrate for Null' % length)
        return r, tail

def valueDecoder(self, fullSubstrate, substrate, asn1Spec, tagSet,
                     length, state, decodeFun, substrateFun):
        head, tail = substrate[:length], substrate[length:]
        r = self._createComponent(asn1Spec, tagSet)
        if head:
            raise error.PyAsn1Error('Unexpected %d-octet substrate for Null' % length)
        return r, tail

def _ValidateEmptyParams(self, params):
    if params:
      param_value, rest = decoder.decode(params)
      if rest:
        raise Asn1Error('Extra unparsed content.')
      if param_value != univ.Null():
        raise Asn1Error('Hasher has parameters. No idea what to do with them.')

def valueDecoder(self, fullSubstrate, substrate, asn1Spec, tagSet,
                     length, state, decodeFun, substrateFun):
        head, tail = substrate[:length], substrate[length:]
        r = self._createComponent(asn1Spec, tagSet)
        if head:
            raise error.PyAsn1Error('Unexpected %d-octet substrate for Null' % length)
        return r, tail

def valueDecoder(self, fullSubstrate, substrate, asn1Spec, tagSet,
                     length, state, decodeFun, substrateFun):
        head, tail = substrate[:length], substrate[length:]
        r = self._createComponent(asn1Spec, tagSet)
        if head:
            raise error.PyAsn1Error('Unexpected %d-octet substrate for Null' % length)
        return r, tail

def valueDecoder(self, fullSubstrate, substrate, asn1Spec, tagSet,
                     length, state, decodeFun, substrateFun):
        head, tail = substrate[:length], substrate[length:]
        r = self._createComponent(asn1Spec, tagSet)
        if head:
            raise error.PyAsn1Error('Unexpected %d-octet substrate for Null' % length)
        return r, tail

def __init__(self, oid=None, value=univ.Null):
        self.oid = oid
        self.default_value = value

def valueDecoder(self, fullSubstrate, substrate, asn1Spec, tagSet,
                     length, state, decodeFun, substrateFun):
        head, tail = substrate[:length], substrate[length:]
        component = self._createComponent(asn1Spec, tagSet)
        if head:
            raise error.PyAsn1Error('Unexpected %d-octet substrate for Null' % length)
        return component, tail

def valueDecoder(self, fullSubstrate, substrate, asn1Spec, tagSet,
                     length, state, decodeFun, substrateFun):
        head, tail = substrate[:length], substrate[length:]
        r = self._createComponent(asn1Spec, tagSet)
        if head:
            raise error.PyAsn1Error('Unexpected %d-octet substrate for Null' % length)
        return r, tail

def valueDecoder(self, fullSubstrate, substrate, asn1Spec, tagSet,
                     length, state, decodeFun, substrateFun):
        head, tail = substrate[:length], substrate[length:]
        r = self._createComponent(asn1Spec, tagSet)
        if head:
            raise error.PyAsn1Error('Unexpected %d-octet substrate for Null' % length)
        return r, tail

def _ValidateEmptyParams(self, params):
    if params:
      param_value, rest = decoder.decode(params)
      if rest:
        raise Asn1Error('Extra unparsed content.')
      if param_value != univ.Null():
        raise Asn1Error('Hasher has parameters. No idea what to do with them.')

def valueDecoder(self, fullSubstrate, substrate, asn1Spec, tagSet,
                     length, state, decodeFun, substrateFun):
        head, tail = substrate[:length], substrate[length:]
        r = self._createComponent(asn1Spec, tagSet)
        if head:
            raise error.PyAsn1Error('Unexpected %d-octet substrate for Null' % length)
        return r, tail

def valueDecoder(self, fullSubstrate, substrate, asn1Spec, tagSet,
                     length, state, decodeFun, substrateFun):
        head, tail = substrate[:length], substrate[length:]
        r = self._createComponent(asn1Spec, tagSet)
        if head:
            raise error.PyAsn1Error('Unexpected %d-octet substrate for Null' % length)
        return r, tail

def valueDecoder(self, fullSubstrate, substrate, asn1Spec, tagSet,
                     length, state, decodeFun, substrateFun):
        head, tail = substrate[:length], substrate[length:]
        r = self._createComponent(asn1Spec, tagSet)
        if head:
            raise error.PyAsn1Error('Unexpected %d-octet substrate for Null' % length)
        return r, tail

def valueDecoder(self, fullSubstrate, substrate, asn1Spec, tagSet,
                     length, state, decodeFun, substrateFun):
        head, tail = substrate[:length], substrate[length:]
        r = self._createComponent(asn1Spec, tagSet)
        if head:
            raise error.PyAsn1Error('Unexpected %d-octet substrate for Null' % length)
        return r, tail

def valueDecoder(self, fullSubstrate, substrate, asn1Spec, tagSet,
                     length, state, decodeFun, substrateFun):
        head, tail = substrate[:length], substrate[length:]
        r = self._createComponent(asn1Spec, tagSet)
        if head:
            raise error.PyAsn1Error('Unexpected %d-octet substrate for Null' % length)
        return r, tail

def valueDecoder(self, fullSubstrate, substrate, asn1Spec, tagSet,
                     length, state, decodeFun, substrateFun):
        head, tail = substrate[:length], substrate[length:]
        r = self._createComponent(asn1Spec, tagSet)
        if head:
            raise error.PyAsn1Error('Unexpected %d-octet substrate for Null' % length)
        return r, tail

def valueDecoder(self, fullSubstrate, substrate, asn1Spec, tagSet,
                     length, state, decodeFun, substrateFun):
        head, tail = substrate[:length], substrate[length:]
        r = self._createComponent(asn1Spec, tagSet)
        if head:
            raise error.PyAsn1Error('Unexpected %d-octet substrate for Null' % length)
        return r, tail

def valueDecoder(self, fullSubstrate, substrate, asn1Spec, tagSet,
                     length, state, decodeFun, substrateFun):
        head, tail = substrate[:length], substrate[length:]
        r = self._createComponent(asn1Spec, tagSet)
        if head:
            raise error.PyAsn1Error('Unexpected %d-octet substrate for Null' % length)
        return r, tail

def valueDecoder(self, fullSubstrate, substrate, asn1Spec, tagSet,
                     length, state, decodeFun, substrateFun):
        head, tail = substrate[:length], substrate[length:]
        r = self._createComponent(asn1Spec, tagSet)
        if head:
            raise error.PyAsn1Error('Unexpected %d-octet substrate for Null' % length)
        return r, tail

def valueDecoder(self, fullSubstrate, substrate, asn1Spec, tagSet,
                     length, state, decodeFun, substrateFun):
        head, tail = substrate[:length], substrate[length:]
        r = self._createComponent(asn1Spec, tagSet)
        if head:
            raise error.PyAsn1Error('Unexpected %d-octet substrate for Null' % length)
        return r, tail

def valueDecoder(self, fullSubstrate, substrate, asn1Spec, tagSet,
                     length, state, decodeFun, substrateFun):
        head, tail = substrate[:length], substrate[length:]
        r = self._createComponent(asn1Spec, tagSet)
        if head:
            raise error.PyAsn1Error('Unexpected %d-octet substrate for Null' % length)
        return r, tail

def valueDecoder(self, fullSubstrate, substrate, asn1Spec, tagSet,
                     length, state, decodeFun, substrateFun):
        head, tail = substrate[:length], substrate[length:]
        r = self._createComponent(asn1Spec, tagSet)
        if head:
            raise error.PyAsn1Error('Unexpected %d-octet substrate for Null' % length)
        return r, tail

def __assemble_hmac_block(self, content, key):
        """ Produce HMAC block ASN.1 structure (MPHMACContainer)

        @developer: vsmysle

        :param content: string DER-encoded content generate HMAC of and
                        encapsulate into HMAC FLOD block
        :param key:     bytes key to use for HMAC generation

        :return: DER-encoded ASN.1 structure that encapsulates HMAC
                 block

        """
        # TODO: add exceptions

        self.logger.debug("producing HMAC block with ASN.1 structure")

        # calculating hmac digest of content
        digest = self.__generate_hmac(content, key)

        # oid for SHA1 hash function
        oid = const.SHA1_OID

        # creating instance of AlgorithmIdentifier class
        ai = asn1_dec.AlgorithmIdentifier()

        # setting corresponding parameters
        ai['algorithm'] = oid
        ai['parameters'] = univ.Null()

        # creating instance of MPHMACContainer class
        hmac_block = asn1_dec.MPHMACContainer()

        # setting corresponding parameters
        hmac_block['digestAlgorithm'] = ai
        hmac_block['digest'] = digest

        return hmac_block

def __get_asn1_algorithm_identifier(self, oid_str):
        """ Generate ASN.1 structure for algorithm identifier

        @developer: vsmysle

        :param oid_str: string OID to encapsulate

        :return: pyasn1.type.univ.Sequence object

        """

        # TODO: add exceptions

        # log entry
        self.logger.debug("creating AlgorithmIdentifier ASN.1 "
                          "structure with OID=%s" % oid_str)

        # create the instance of AlgorithmIdentifier
        ai = asn1_dec.AlgorithmIdentifier()

        # set corresponding parameters
        ai['algorithm'] = oid_str
        ai['parameters'] = univ.Null()

        # return the result
        return ai

def valueDecoder(self, fullSubstrate, substrate, asn1Spec, tagSet,
                     length, state, decodeFun, substrateFun):
        head, tail = substrate[:length], substrate[length:]
        r = self._createComponent(asn1Spec, tagSet)
        if head:
            raise error.PyAsn1Error('Unexpected %d-octet substrate for Null' % length)
        return r, tail

def valueDecoder(self, fullSubstrate, substrate, asn1Spec, tagSet,
                     length, state, decodeFun, substrateFun):
        head, tail = substrate[:length], substrate[length:]
        r = self._createComponent(asn1Spec, tagSet)
        if head:
            raise error.PyAsn1Error('Unexpected %d-octet substrate for Null' % length)
        return r, tail

def __init__(self, oid=None, value=univ.Null):
        self.oid = oid
        self.default_value = value