Class BloomFilterIVValidator

java.lang.Object
net.i2p.router.tunnel.BloomFilterIVValidator
All Implemented Interfaces:
IVValidator

class BloomFilterIVValidator extends Object implements IVValidator
Manage the IV validation for all of the router's tunnels by way of a big decaying bloom filter.
  • Constructor Details

    • BloomFilterIVValidator

      public BloomFilterIVValidator(RouterContext ctx, int KBps)
      Parameters:
      KBps - share bandwidth
  • Method Details

    • receiveIV

      public boolean receiveIV(byte[] ivData, int ivOffset, byte[] payload, int payloadOffset)
      Description copied from interface: IVValidator
      receive the IV for the tunnel message, returning true if it is valid, or false if it has already been used (or is otherwise invalid). To prevent colluding attackers from successfully tagging the tunnel by switching the IV and the first block of the message, the validator should treat the XOR of the IV and the first block as the unique identifier, not the IV alone (since the tunnel is encrypted via AES/CBC). Thanks to dvorak for pointing out that tagging!
      Specified by:
      receiveIV in interface IVValidator
      Parameters:
      ivData - data will not be modified
      payload - will not be modified
    • destroy

      public void destroy()