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java.lang.Objectnet.i2p.router.tunnel.HopProcessor
public class HopProcessor
Take a received tunnel message, verify that it isn't a duplicate, and translate it into what the next hop will want. The hop processor works the same on all peers - inbound and outbound participants, outbound endpoints, and inbound gateways (with a small modification per InbuondGatewayProcessor).
Field Summary | |
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protected HopConfig |
_config
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protected I2PAppContext |
_context
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(package private) static int |
IV_LENGTH
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(package private) static boolean |
USE_DOUBLE_IV_ENCRYPTION
as of i2p 0.6, the tunnel crypto will change by encrypting the IV both before and after using it at each hop so as to prevent a certain type of replay/confirmation attack. |
(package private) static boolean |
USE_ENCRYPTION
helpful flag for debugging |
Constructor Summary | |
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HopProcessor(I2PAppContext ctx,
HopConfig config)
Deprecated. unused |
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HopProcessor(I2PAppContext ctx,
HopConfig config,
IVValidator validator)
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Method Summary | |
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protected static IVValidator |
createValidator()
Deprecated. unused |
boolean |
process(byte[] orig,
int offset,
int length,
Hash prev)
Process the data for the current hop, overwriting the original data with what should be sent to the next peer. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
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protected I2PAppContext _context
protected HopConfig _config
static final boolean USE_ENCRYPTION
static final boolean USE_DOUBLE_IV_ENCRYPTION
static final int IV_LENGTH
Constructor Detail |
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public HopProcessor(I2PAppContext ctx, HopConfig config)
public HopProcessor(I2PAppContext ctx, HopConfig config, IVValidator validator)
Method Detail |
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protected static IVValidator createValidator()
public boolean process(byte[] orig, int offset, int length, Hash prev)
orig
- IV+data of the messageoffset
- index into orig where the IV beginslength
- how long after the offset does the message go for?prev
- previous hop in the tunnel, or null if we are the gateway
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