class MD5AuthHandler

RIPv2 Authentication handler for MD5 scheme. More...

Definition#include <auth.hh>
InheritsAuthHandlerBase [public ]
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Detailed Description

Class to check inbound MD5 authenticated packets and add authentication data to outbound RIP packets. The RIP MD5 authentication scheme is described in RFC 2082.

MD5Key (struct)

MD5Key

Structure to hold MD5 key information.

typedef list<MD5Key> KeyChain

KeyChain

KeyChain::const_iterator  key_at (uint32_t when_secs)

key_at

[const]

Get iterator pointing at first key valid at a particular time.

Parameters:
when_secstime in seconds since midnight 1 Jan 1970.

 MD5AuthHandler (EventLoop& e, uint32_t timing_slack_secs = 3600)

MD5AuthHandler

Constructor

Parameters:
ethe EventLoop instance to used for time reference.
timing_slack_secsthe amount of slack in time comparisons, eg the amount of time a key is accepted before or after it's validity period.

bool  authenticate (const uint8_t* packet, size_t packet_bytes, const PacketRouteEntry<IPv4>*& entries_start, uint32_t& n_entries )

authenticate

Reimplemented from AuthHandlerBase.

uint32_t  authenticate (const uint8_t* packet, size_t packet_bytes, PacketRouteEntry<IPv4>* first_entry, vector<uint8_t>& trailer_data)

authenticate

Reimplemented from AuthHandlerBase.

uint32_t  head_entries ()

head_entries

[const]

Reimplemented from AuthHandlerBase.

uint32_t  max_routing_entries ()

max_routing_entries

[const]

Reimplemented from AuthHandlerBase.

const char*  name ()

name

[const]

Reimplemented from AuthHandlerBase.

bool  add_key (uint8_t id, const string& key, uint32_t start_secs, uint32_t end_secs)

add_key

Add key to MD5 key chain. If key already exists, it is updated with new settings. If the start and end times are the same the key is treated as persistant and will not expire.

Parameters:
key_idunique id associated with key.
keyphrase used for MD5 digest computation.
start_secsstart time in seconds since midnight 1 Jan 1970.
end_secsstart time in seconds since midnight 1 Jan 1970.

Returns: true on success, false if end time is less than start time or key has already expired.

void  remove_key (uint8_t id)

remove_key

Remove key from MD5 key chain.

Parameters:
key_idunique id of key to be removed.

uint16_t  currently_active_key ()

currently_active_key

[const]

Get currently active key.

Returns: key id in range 0-255 if key exists, value outside valid range otherwise 256-65535.

inline const KeyChain&  key_chain ()

key_chain

[const]

Get all keys managed by MD5AuthHandler.

Returns: list of keys.

KeyChain::iterator  key_at (uint32_t when_secs)

key_at

[protected]

Get iterator pointing at first key valid at a particular time.

Parameters:
when_secstime in seconds since midnight 1 Jan 1970.

EventLoop& _e

_e

[protected]

KeyChain _key_chain

_key_chain

[protected]

uint32_t _slack_secs

_slack_secs

[protected]


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