I2PDatagramDissector (Javadocs [I2P+ 2.13.0+]

java.lang.Object
- net.i2p.client.datagram.I2PDatagramDissector

```
public final class I2PDatagramDissector
extends Object
```
Class for dissecting I2P repliable datagrams, checking the authenticity of the sender. Note that objects of this class are NOT THREAD SAFE!

Constructor Summary
Constructors
Constructor and Description
I2PDatagramDissector()
Crate a new I2P repliable datagram dissector.

Constructors
Constructor and Description
`I2PDatagramDissector()` Crate a new I2P repliable datagram dissector.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`Hash`	`extractHash()` Extract the hash of the payload of an I2P repliable datagram (previously loaded with the loadI2PDatagram() method), without verifying the datagram signature.
`byte[]`	`extractPayload()` Extract the payload carried by an I2P repliable datagram (previously loaded with the loadI2PDatagram() method), without verifying the datagram signature.
`Destination`	`extractSender()` Extract the sender of an I2P repliable datagram (previously loaded with the loadI2PDatagram() method), without verifying the datagram signature.
`Hash`	`getHash()` Extract the hash of the payload of an I2P repliable datagram (previously loaded with the loadI2PDatagram() method), verifying the datagram signature.
`byte[]`	`getPayload()` Get the payload carried by an I2P repliable datagram (previously loaded with the loadI2PDatagram() method), verifying the datagram signature.
`Destination`	`getSender()` Get the sender of an I2P repliable datagram (previously loaded with the loadI2PDatagram() method), verifying the datagram signature.
`void`	`loadI2PDatagram(byte[] dgram)` Load an I2P repliable datagram into the dissector.
`void`	`verifySignature()` Verify the signature of this datagram (previously loaded with the loadI2PDatagram() method)

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - I2PDatagramDissector
```
public I2PDatagramDissector()
```
    Crate a new I2P repliable datagram dissector.
- Method Detail
  - extractHash
```
public Hash extractHash()
```
    Extract the hash of the payload of an I2P repliable datagram (previously loaded with the loadI2PDatagram() method), without verifying the datagram signature. As of 0.9.14, for signature types other than DSA_SHA1, this returns null.
    Returns:
    The hash of the payload of the I2P repliable datagram
  - extractPayload
```
public byte[] extractPayload()
```
    Extract the payload carried by an I2P repliable datagram (previously loaded with the loadI2PDatagram() method), without verifying the datagram signature.
    Returns:
    A byte array containing the datagram payload
  - extractSender
```
public Destination extractSender()
```
    Extract the sender of an I2P repliable datagram (previously loaded with the loadI2PDatagram() method), without verifying the datagram signature.
    Returns:
    The Destination of the I2P repliable datagram sender
  - getHash
```
public Hash getHash()
             throws I2PInvalidDatagramException
```
    Extract the hash of the payload of an I2P repliable datagram (previously loaded with the loadI2PDatagram() method), verifying the datagram signature. As of 0.9.14, for signature types other than DSA_SHA1, this returns null.
    Returns:
    The hash of the payload of the I2P repliable datagram
    Throws:
    I2PInvalidDatagramException - if the signature verification fails
  - getPayload
```
public byte[] getPayload()
                  throws I2PInvalidDatagramException
```
    Get the payload carried by an I2P repliable datagram (previously loaded with the loadI2PDatagram() method), verifying the datagram signature.
    Returns:
    A byte array containing the datagram payload
    Throws:
    I2PInvalidDatagramException - if the signature verification fails
  - getSender
```
public Destination getSender()
                      throws I2PInvalidDatagramException
```
    Get the sender of an I2P repliable datagram (previously loaded with the loadI2PDatagram() method), verifying the datagram signature.
    Returns:
    The Destination of the I2P repliable datagram sender
    Throws:
    I2PInvalidDatagramException - if the signature verification fails
  - loadI2PDatagram
```
public void loadI2PDatagram(byte[] dgram)
                     throws DataFormatException
```
    Load an I2P repliable datagram into the dissector. Does NOT verify the signature. Format is:
    1. Destination (387+ bytes)
    2. Signature (40+ bytes, type and length as implied by signing key type in the Destination)
    3. Payload
    For DSA_SHA1 Destinations, the signature is of the SHA-256 Hash of the payload. As of 0.9.14, for non-DSA_SHA1 Destinations, the signature is of the payload itself.
    Parameters:
    dgram - non-null I2P repliable datagram to be loaded
    Throws:
    DataFormatException - If there's an error in the datagram format
  - verifySignature
```
public void verifySignature()
                     throws I2PInvalidDatagramException
```
    Verify the signature of this datagram (previously loaded with the loadI2PDatagram() method)
    Throws:
    I2PInvalidDatagramException - if the signature is invalid

Class I2PDatagramDissector

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

I2PDatagramDissector

Method Detail

extractHash

extractPayload

extractSender

getHash

getPayload

getSender

loadI2PDatagram

verifySignature