pcpp::IPv6AuthenticationHeader Class Reference

#include <IPv6Extensions.h>

Inheritance diagram for pcpp::IPv6AuthenticationHeader:

Classes
struct	ipv6_authentication_header

Public Member Functions
	IPv6AuthenticationHeader (uint32_t securityParametersIndex, uint32_t sequenceNumber, const uint8_t *integrityCheckValue, size_t integrityCheckValueLen)
ipv6_authentication_header *	getAuthHeader () const
uint8_t *	getIntegrityCheckValue () const
size_t	getIntegrityCheckValueLength () const
size_t	getExtensionLen () const override
Public Member Functions inherited from pcpp::IPv6Extension
IPv6ExtensionType	getExtensionType () const
virtual	~IPv6Extension ()
IPv6Extension *	getNextHeader () const

Additional Inherited Members
Public Types inherited from pcpp::IPv6Extension
enum	IPv6ExtensionType {   IPv6HopByHop = 0 , IPv6Routing = 43 , IPv6Fragmentation = 44 , IPv6AuthenticationHdr = 51 ,   IPv6Destination = 60 , IPv6ExtensionUnknown = 255 }

Detailed Description

Represents IPv6 authentication header extension (used in IPSec protocol) and allows easy access to all of its data

Constructor & Destructor Documentation

IPv6AuthenticationHeader()

pcpp::IPv6AuthenticationHeader::IPv6AuthenticationHeader	(	uint32_t	securityParametersIndex,
		uint32_t	sequenceNumber,
		const uint8_t *	integrityCheckValue,
		size_t	integrityCheckValueLen
	)

A c'tor for creating a new IPv6 authentication header extension object not bounded to a packet. Useful for adding new extensions to an IPv6 layer with IPv6Layer::addExtension()

Parameters

[in]	securityParametersIndex	Security Parameters Index (SPI) value (will be written to ipv6_authentication_header::securityParametersIndex field)
[in]	sequenceNumber	Sequence number value (will be written to ipv6_authentication_header::sequenceNumber field)
[in]	integrityCheckValue	A pointer to a buffer containing the integrity check value (ICV) data for this extension. Notice this pointer is read-only and its content isn't modified in any way
[in]	integrityCheckValueLen	The length of the integrity check value (ICV) buffer

Member Function Documentation

getAuthHeader()

ipv6_authentication_header* pcpp::IPv6AuthenticationHeader::getAuthHeader ( ) const

inline

Get a pointer to the fixed part of the authentication header. Notice the return pointer points directly to the data, so every change will modify the actual packet data

Returns

A pointer to the ipv6_authentication_header

getExtensionLen()

size_t pcpp::IPv6AuthenticationHeader::getExtensionLen ( ) const

inlineoverridevirtual

In the authentication header the extension length is calculated in a different way than other extensions. The calculation is: [ 4 * (ipv6_authentication_header::headerLen + 2) ]

Returns

The length of this extension

Reimplemented from pcpp::IPv6Extension.

getIntegrityCheckValue()

uint8_t* pcpp::IPv6AuthenticationHeader::getIntegrityCheckValue

(

)

const

Returns

A pointer to the buffer containing the integrity check value (ICV) for this extension. Notice that any change in this buffer will lead to a change in the extension data

getIntegrityCheckValueLength()

size_t pcpp::IPv6AuthenticationHeader::getIntegrityCheckValueLength

(

)

const

Returns

The length of the integrity check value (ICV) buffer