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Python Data.getSignature方法代码示例

本文整理汇总了Python中pyndn.data.Data.getSignature方法的典型用法代码示例。如果您正苦于以下问题:Python Data.getSignature方法的具体用法?Python Data.getSignature怎么用?Python Data.getSignature使用的例子?那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在pyndn.data.Data的用法示例。


在下文中一共展示了Data.getSignature方法的2个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的Python代码示例。

示例1: _registerPrefixHelper

# 需要导入模块: from pyndn.data import Data [as 别名]
# 或者: from pyndn.data.Data import getSignature [as 别名]
    def _registerPrefixHelper(
      self, registeredPrefixId, prefix, onInterest, onRegisterFailed, flags,
      wireFormat):
        """
        Do the work of registerPrefix to register with NDNx once we have an
        _ndndId.

        :param int registeredPrefixId: The
          _RegisteredPrefix.getNextRegisteredPrefixId() which registerPrefix got
          so it could return it to the caller. If this is 0, then don't add to
          _registeredPrefixTable (assuming it has already been done).
        """
        # Create a ForwardingEntry.
        # Note: ndnd ignores any freshness that is larger than 3600 seconds and
        #   sets 300 seconds instead. To register "forever", (=2000000000 sec),
        #   the freshness period must be omitted.
        forwardingEntry = ForwardingEntry()
        forwardingEntry.setAction("selfreg")
        forwardingEntry.setPrefix(prefix)
        forwardingEntry.setForwardingFlags(flags)
        content = forwardingEntry.wireEncode(wireFormat)

        # Set the ForwardingEntry as the content of a Data packet and sign.
        data = Data()
        data.setContent(content)
        # Set the name to a random value so that each request is unique.
        nonce = bytearray(4)
        for i in range(len(nonce)):
            nonce[i] = _systemRandom.randint(0, 0xff)
        data.getName().append(nonce)
        # The ndnd ignores the signature, so set to blank values.
        data.getSignature().getKeyLocator().setType(
          KeyLocatorType.KEY_LOCATOR_DIGEST)
        data.getSignature().getKeyLocator().setKeyData(
          Blob(bytearray(32), False))
        data.getSignature().setSignature(Blob(bytearray(128), False))
        encodedData = data.wireEncode(wireFormat)

        # Create an interest where the name has the encoded Data packet.
        interestName = Name().append("ndnx").append(self._ndndId).append(
          "selfreg").append(encodedData)

        interest = Interest(interestName)
        interest.setInterestLifetimeMilliseconds(4000.0)
        interest.setScope(1)
        encodedInterest = interest.wireEncode(wireFormat)

        if registeredPrefixId != 0:
            # Save the onInterest callback and send the registration interest.
            self._registeredPrefixTable.append(Node._RegisteredPrefix(
              registeredPrefixId, prefix, onInterest))

        response = Node._RegisterResponse(
          self, prefix, onInterest, onRegisterFailed, flags, wireFormat, False)
        self.expressInterest(
          interest, response.onData, response.onTimeout, wireFormat)
开发者ID:WeiqiJust,项目名称:NDN-total,代码行数:58,代码来源:node.py

示例2: _registerPrefixHelper

# 需要导入模块: from pyndn.data import Data [as 别名]
# 或者: from pyndn.data.Data import getSignature [as 别名]
    def _registerPrefixHelper(
      self, registeredPrefixId, prefix, onInterest, onRegisterFailed, flags,
      wireFormat, face):
        """
        Do the work of registerPrefix to register with NDNx once we have an
        _ndndId.

        :param int registeredPrefixId: The getNextEntryId() which registerPrefix
          got so it could return it to the caller. If this is 0, then don't add
          to _registeredPrefixTable (assuming it has already been done).
        """
        if not WireFormat.ENABLE_NDNX:
            # We can get here if the command signing info is set, but running NDNx.
            raise RuntimeError(
              "registerPrefix with NDNx is deprecated. To enable while you upgrade your code to use NFD, set WireFormat.ENABLE_NDNX = True")

        # Create a ForwardingEntry.
        # Note: ndnd ignores any freshness that is larger than 3600 seconds and
        #   sets 300 seconds instead. To register "forever", (=2000000000 sec),
        #   the freshness period must be omitted.
        forwardingEntry = ForwardingEntry()
        forwardingEntry.setAction("selfreg")
        forwardingEntry.setPrefix(prefix)
        forwardingEntry.setForwardingFlags(flags)
        content = forwardingEntry.wireEncode(wireFormat)

        # Set the ForwardingEntry as the content of a Data packet and sign.
        data = Data()
        data.setContent(content)
        # Set the name to a random value so that each request is unique.
        nonce = bytearray(4)
        for i in range(len(nonce)):
            nonce[i] = _systemRandom.randint(0, 0xff)
        data.getName().append(nonce)
        # The ndnd ignores the signature, so set to blank values.
        data.getSignature().getKeyLocator().setType(
          KeyLocatorType.KEY_LOCATOR_DIGEST)
        data.getSignature().getKeyLocator().setKeyData(
          Blob(bytearray(32), False))
        data.getSignature().setSignature(Blob(bytearray(128), False))
        encodedData = data.wireEncode(wireFormat)

        # Create an interest where the name has the encoded Data packet.
        interestName = Name().append("ndnx").append(self._ndndId).append(
          "selfreg").append(encodedData)

        interest = Interest(interestName)
        interest.setInterestLifetimeMilliseconds(4000.0)
        interest.setScope(1)

        if registeredPrefixId != 0:
            interestFilterId = 0
            if onInterest != None:
                # registerPrefix was called with the "combined" form that includes
                # the callback, so add an InterestFilterEntry.
                interestFilterId = self.getNextEntryId()
                self.setInterestFilter(
                  interestFilterId, InterestFilter(prefix), onInterest, face)

            self._registeredPrefixTable.append(Node._RegisteredPrefix(
              registeredPrefixId, prefix, interestFilterId))

        # Send the registration interest.
        response = Node._RegisterResponse(
          self, prefix, onInterest, onRegisterFailed, flags, wireFormat, False,
          face)
        self.expressInterest(
          self.getNextEntryId(), interest, response.onData, response.onTimeout,
          wireFormat, face)
开发者ID:mjycom,项目名称:PyNDN2,代码行数:71,代码来源:node.py


注:本文中的pyndn.data.Data.getSignature方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。