#include <SecurityBlock.h>

Inheritance diagram for dtn::security::SecurityBlock:

Collaboration diagram for dtn::security::SecurityBlock:

Classes
class	TLV

class	TLVList

Public Types
enum	BLOCK_TYPES { BUNDLE_AUTHENTICATION_BLOCK = 0x02, PAYLOAD_INTEGRITY_BLOCK = 0x03, PAYLOAD_CONFIDENTIAL_BLOCK = 0x04, EXTENSION_SECURITY_BLOCK = 0x09 }

enum	TLV_TYPES { not_set = 0, initialization_vector = 1, key_information = 3, fragment_range = 4, integrity_signature = 5, salt = 7, PCB_integrity_check_value = 8, encapsulated_block = 10, block_type_of_encapsulated_block = 11 }

enum	CIPHERSUITE_FLAGS { CONTAINS_SECURITY_RESULT = 1 << 0, CONTAINS_CORRELATOR = 1 << 1, CONTAINS_CIPHERSUITE_PARAMS = 1 << 2, CONTAINS_SECURITY_DESTINATION = 1 << 3, CONTAINS_SECURITY_SOURCE = 1 << 4, BIT5_RESERVED = 1 << 5, BIT6_RESERVED = 1 << 6 }

enum	CIPHERSUITE_IDS { BAB_HMAC = 0x001, PIB_RSA_SHA256 = 0x002, PCB_RSA_AES128_PAYLOAD_PIB_PCB = 0x003, ESB_RSA_AES128_EXT = 0x004 }

Public Types inherited from dtn::data::Block
enum	ProcFlags { REPLICATE_IN_EVERY_FRAGMENT = 1, TRANSMIT_STATUSREPORT_IF_NOT_PROCESSED = 1 << 0x01, DELETE_BUNDLE_IF_NOT_PROCESSED = 1 << 0x02, LAST_BLOCK = 1 << 0x03, DISCARD_IF_NOT_PROCESSED = 1 << 0x04, FORWARDED_WITHOUT_PROCESSED = 1 << 0x05, BLOCK_CONTAINS_EIDS = 1 << 0x06 }

typedef std::list< dtn::data::EID >	eid_list

Public Member Functions
virtual	~SecurityBlock ()=0

virtual dtn::data::Length	getLength () const

virtual dtn::data::Length	getLength_mutable () const

virtual std::ostream &	serialize (std::ostream &stream, dtn::data::Length &length) const

virtual std::ostream &	serialize_strict (std::ostream &stream, dtn::data::Length &length) const

virtual std::istream &	deserialize (std::istream &stream, const dtn::data::Length &length)

const dtn::data::EID	getSecuritySource () const

const dtn::data::EID	getSecurityDestination () const

void	setSecuritySource (const dtn::data::EID &source)

void	setSecurityDestination (const dtn::data::EID &destination)

bool	isSecuritySource (const dtn::data::Bundle &, const dtn::data::EID &) const

bool	isSecurityDestination (const dtn::data::Bundle &, const dtn::data::EID &) const

const dtn::data::EID	getSecuritySource (const dtn::data::Bundle &) const

const dtn::data::EID	getSecurityDestination (const dtn::data::Bundle &) const

template<class T >
T &	encryptBlock (dtn::data::Bundle &bundle, dtn::data::Bundle::iterator &it, uint32_t salt, const unsigned char ephemeral_key[ibrcommon::AES128Stream::key_size_in_bytes])

Public Member Functions inherited from dtn::data::Block
virtual	~Block ()

Block &	operator= (const Block &block)

bool	operator== (const block_t &id) const

virtual void	addEID (const dtn::data::EID &eid)

virtual void	clearEIDs ()

virtual const eid_list &	getEIDList () const

const block_t &	getType () const

void	set (ProcFlags flag, const bool &value)

bool	get (ProcFlags flag) const

const Bitset< ProcFlags > &	getProcessingFlags () const

virtual Length	getLength_strict () const

Protected Member Functions
void	store_security_references ()

	SecurityBlock (const SecurityBlock::BLOCK_TYPES type, const CIPHERSUITE_IDS id)

	SecurityBlock (const SecurityBlock::BLOCK_TYPES type)

void	setCiphersuiteId (const CIPHERSUITE_IDS id)

void	setCorrelator (const dtn::data::Number &corr)

virtual MutualSerializer &	serialize_mutable (MutualSerializer &serializer) const

virtual MutualSerializer &	serialize_mutable_without_security_result (MutualSerializer &serializer) const

virtual dtn::data::Length	getSecurityResultSize () const

Protected Member Functions inherited from dtn::data::Block
	Block (block_t blocktype)

Static Protected Member Functions
static bool	isCorrelatorPresent (const dtn::data::Bundle &bundle, const dtn::data::Number &correlator)

static dtn::data::Number	createCorrelatorValue (const dtn::data::Bundle &bundle)

static void	createSaltAndKey (uint32_t &salt, unsigned char *key, dtn::data::Length key_size)

static void	addKey (TLVList &security_parameter, unsigned char const const key, dtn::data::Length key_size, RSA rsa)

static bool	getKey (const TLVList &security_parameter, unsigned char key, dtn::data::Length key_size, RSA rsa)

static void	addSalt (TLVList &security_parameters, const uint32_t &salt)

static uint32_t	getSalt (const TLVList &security_parameters)

static void	copyEID (const dtn::data::Block &from, dtn::data::Block &to, dtn::data::Length skip=0)

template<class T >
static T &	encryptBlock (dtn::data::Bundle &bundle, dtn::data::Bundle::iterator &it, uint32_t salt, const unsigned char ephemeral_key[ibrcommon::AES128Stream::key_size_in_bytes])

static void	decryptBlock (dtn::data::Bundle &bundle, dtn::data::Bundle::iterator &it, uint32_t salt, const unsigned char key[ibrcommon::AES128Stream::key_size_in_bytes])

static void	addFragmentRange (TLVList &ciphersuite_params, const dtn::data::Number &fragmentoffset, const dtn::data::Number &payload_length)

Protected Attributes
dtn::data::Number	_ciphersuite_id

dtn::data::Bitset < CIPHERSUITE_FLAGS >	_ciphersuite_flags

dtn::data::Number	_correlator

TLVList	_ciphersuite_params

TLVList	_security_result

dtn::data::EID	_security_destination

dtn::data::EID	_security_source

Protected Attributes inherited from dtn::data::Block
block_t	_blocktype

eid_list	_eids

Friends
class	StrictSerializer

class	MutualSerializer

Detailed Description

Abstract base class for BundleAuthenticationBlock, PayloadIntegrityBlock, PayloadConfidentialBlock and ExtensionSecurityBlock. It provides definitions of constants and basic functions, which are shared among the blocks. These blocks can be serialized in three forms. In normal form, which is needed for transmission, in strict canonical form, which is need for the BundleAuthenticationBlock and in mutable canonical form. In strict canonical form the security result can be set to be ignored. In mutable canonical form all SDNVs are unpacked to 8 byte fields, numbers written in network byte order and even the security result may be ignored, too. Because the size of security result of the children cannot be known in advance, the children have to implement a method for getting this size.

Definition at line 58 of file SecurityBlock.h.

Member Enumeration Documentation

enum dtn::security::SecurityBlock::BLOCK_TYPES

the block id for each block type

Enumerator
BUNDLE_AUTHENTICATION_BLOCK
PAYLOAD_INTEGRITY_BLOCK
PAYLOAD_CONFIDENTIAL_BLOCK
EXTENSION_SECURITY_BLOCK

Definition at line 64 of file SecurityBlock.h.

enum dtn::security::SecurityBlock::CIPHERSUITE_FLAGS

the position of each flag in the ciphersuite flags

Enumerator
CONTAINS_SECURITY_RESULT
CONTAINS_CORRELATOR
CONTAINS_CIPHERSUITE_PARAMS
CONTAINS_SECURITY_DESTINATION
CONTAINS_SECURITY_SOURCE
BIT5_RESERVED
BIT6_RESERVED

Definition at line 86 of file SecurityBlock.h.

enum dtn::security::SecurityBlock::CIPHERSUITE_IDS

the ids of the supported ciphersuites

Enumerator
BAB_HMAC
PIB_RSA_SHA256
PCB_RSA_AES128_PAYLOAD_PIB_PCB
ESB_RSA_AES128_EXT

Definition at line 97 of file SecurityBlock.h.

enum dtn::security::SecurityBlock::TLV_TYPES

the id of each TLV type, which is used in security parameters or

security result

Enumerator
not_set
initialization_vector
key_information
fragment_range
integrity_signature
salt
PCB_integrity_check_value
encapsulated_block
block_type_of_encapsulated_block

Definition at line 73 of file SecurityBlock.h.

Constructor & Destructor Documentation

dtn::security::SecurityBlock::~SecurityBlock ( )

pure virtual

does nothing

Definition at line 200 of file SecurityBlock.cpp.

dtn::security::SecurityBlock::SecurityBlock	(	const SecurityBlock::BLOCK_TYPES	type,
		const CIPHERSUITE_IDS	id
	)

protected

Creates an empty SecurityBlock. This is only needed by children, which add blocks to bundles in a factory

Parameters

type	type of child block
id	the ciphersuite

Definition at line 188 of file SecurityBlock.cpp.

dtn::security::SecurityBlock::SecurityBlock ( const SecurityBlock::BLOCK_TYPES type )

protected

Creates a factory with a partner. If partner is empty, this must be a instance with a private key or a BundleAuthenticationBlock.

Parameters

type	type of child block

Definition at line 194 of file SecurityBlock.cpp.

Member Function Documentation

void dtn::security::SecurityBlock::addFragmentRange	(	TLVList &	ciphersuite_params,
		const dtn::data::Number &	fragmentoffset,
		const dtn::data::Number &	payload_length
	)

staticprotected

Calculates the Size of the stream and adds a fragment range item to ciphersuite_params

Parameters

ciphersuite_params	the string which will get a fragment range TLV added
stream	the stream which size will be calculated

Definition at line 686 of file SecurityBlock.cpp.

References fragment_range, and dtn::security::SecurityBlock::TLVList::set().

Referenced by dtn::security::PayloadConfidentialBlock::encrypt(), and dtn::security::PayloadIntegrityBlock::sign().

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void dtn::security::SecurityBlock::addKey	(	TLVList &	security_parameter,
		unsigned char const *const	key,
		dtn::data::Length	key_size,
		RSA *	rsa
	)

staticprotected

Adds a key as a TLV to a string. The key is encrypted using the public key provided in the rsa object.

Parameters

security_parameter	the string object which gets the TLV appended which contains the encrypted key
key	the plaintext key
key_size	the size of the plaintext key
rsa	object containing the public key for encryption of the symmetric key

Definition at line 530 of file SecurityBlock.cpp.

References ibrcommon::LogLevel::critical, IBRCOMMON_LOGGER_ENDL, IBRCOMMON_LOGGER_ex, key_information, and dtn::security::SecurityBlock::TLVList::set().

Referenced by dtn::security::ExtensionSecurityBlock::encrypt(), and dtn::security::PayloadConfidentialBlock::encrypt().

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void dtn::security::SecurityBlock::addSalt	(	TLVList &	security_parameters,
		const uint32_t &	salt
	)

staticprotected

Adds a salt TLV object to a string.

Parameters

security_parameters	the string
salt	the salt which shall be added

Definition at line 585 of file SecurityBlock.cpp.

References salt, and dtn::security::SecurityBlock::TLVList::set().

Referenced by dtn::security::ExtensionSecurityBlock::encrypt(), and dtn::security::PayloadConfidentialBlock::encrypt().

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void dtn::security::SecurityBlock::copyEID	(	const dtn::data::Block &	from,
		dtn::data::Block &	to,
		dtn::data::Length	skip = `0`
	)

staticprotected

Copys all EIDs from one block to another and skips the first skip EIDs

Parameters

from	source of the EIDs
to	destination of the EIDs
skip	how much EIDs should be skipped at the beginning

Definition at line 569 of file SecurityBlock.cpp.

Referenced by decryptBlock(), and encryptBlock().

dtn::data::Number dtn::security::SecurityBlock::createCorrelatorValue ( const dtn::data::Bundle & bundle )

staticprotected

Creates a unique correlatorvalue for bundle

Parameters

bundle the bundle for which a new unique correlator shall be created

Returns: a unique correlator

Definition at line 290 of file SecurityBlock.cpp.

References isCorrelatorPresent(), and dtn::data::SDNV< E >::random().

Referenced by dtn::security::BundleAuthenticationBlock::auth(), and dtn::security::PayloadConfidentialBlock::encrypt().

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void dtn::security::SecurityBlock::createSaltAndKey	(	uint32_t &	salt,
		unsigned char *	key,
		dtn::data::Length	key_size
	)

staticprotected

Fills salt and key with random numbers.

Parameters

salt	reference to salt
key	pointer to key
key_size	size of key

Definition at line 515 of file SecurityBlock.cpp.

References ibrcommon::LogLevel::critical, IBRCOMMON_LOGGER_ENDL, and IBRCOMMON_LOGGER_ex.

Referenced by dtn::security::ExtensionSecurityBlock::encrypt(), and dtn::security::PayloadConfidentialBlock::encrypt().

void dtn::security::SecurityBlock::decryptBlock	(	dtn::data::Bundle &	bundle,
		dtn::data::Bundle::iterator &	it,
		uint32_t	salt,
		const unsigned char	key[ibrcommon::AES128Stream::key_size_in_bytes]
	)

staticprotected

Decrypts the block which is held in the SecurityBlock replaces it. The ciphertext is only substituted and the old block reconstructed if tag verification succeeds.

Parameters

bundle	the bundle which contains block
block	the security block with an encrypted block in its security result
salt	the salt
ephemeral_key	the key

Returns: true if tag verification succeeded, false if not

Definition at line 598 of file SecurityBlock.cpp.

References _ciphersuite_flags, _ciphersuite_params, _security_result, dtn::data::PayloadBlock::BLOCK_TYPE, ibrcommon::CipherStream::CIPHER_DECRYPT, dtn::data::Block::clearEIDs(), CONTAINS_SECURITY_DESTINATION, CONTAINS_SECURITY_SOURCE, copyEID(), encapsulated_block, dtn::data::Bundle::find(), dtn::data::ExtensionBlock::Factory::get(), dtn::security::SecurityBlock::TLVList::get(), initialization_vector, dtn::data::Bundle::insert(), ibrcommon::AES128Stream::iv_len, dtn::data::Bundle::remove(), ibrcommon::AES128Stream::tag_len, and ibrcommon::AES128Stream::verify().

Referenced by dtn::security::ExtensionSecurityBlock::decrypt(), and dtn::security::PayloadConfidentialBlock::decrypt().

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std::istream & dtn::security::SecurityBlock::deserialize	(	std::istream &	stream,
		const dtn::data::Length &	length
	)

virtual

Parses the SecurityBlock from a Stream

Parameters

stream the stream to read from

Implements dtn::data::Block.

Reimplemented in dtn::security::PayloadIntegrityBlock.

Definition at line 399 of file SecurityBlock.cpp.

References dtn::data::Block::_blocktype, _ciphersuite_flags, _ciphersuite_id, _ciphersuite_params, _correlator, dtn::data::Block::_eids, _security_destination, _security_result, _security_source, BAB_HMAC, BUNDLE_AUTHENTICATION_BLOCK, CONTAINS_CIPHERSUITE_PARAMS, CONTAINS_CORRELATOR, CONTAINS_SECURITY_DESTINATION, CONTAINS_SECURITY_RESULT, CONTAINS_SECURITY_SOURCE, ESB_RSA_AES128_EXT, EXTENSION_SECURITY_BLOCK, PAYLOAD_CONFIDENTIAL_BLOCK, PAYLOAD_INTEGRITY_BLOCK, PCB_RSA_AES128_PAYLOAD_PIB_PCB, and PIB_RSA_SHA256.

Referenced by dtn::security::PayloadIntegrityBlock::deserialize().

template<class T >

static T& dtn::security::SecurityBlock::encryptBlock	(	dtn::data::Bundle &	bundle,
		dtn::data::Bundle::iterator &	it,
		uint32_t	salt,
		const unsigned char	ephemeral_key[ibrcommon::AES128Stream::key_size_in_bytes]
	)

staticprotected

Encrypts a Block. The used initialisation vector will be written into the security parameters of the new SecurityBlock. The ciphertext will have the tag appended and be written into security result. The flags that this block contains ciphersuite parameters and security result will be set. If this is the first block, don't forget to add the key and salt to its security parameters.

Parameters

bundle	the bundle which contains block
it	The iterator pointing to the block which shall be encrypted and encapsulated
salt	the salt to be used
ephemeral_key	the key to be used

Returns: the Security Block which replaced block

template<class T >

T& dtn::security::SecurityBlock::encryptBlock	(	dtn::data::Bundle &	bundle,
		dtn::data::Bundle::iterator &	it,
		uint32_t	salt,
		const unsigned char	ephemeral_key[ibrcommon::AES128Stream::key_size_in_bytes]
	)

Definition at line 425 of file SecurityBlock.h.

References ibrcommon::CipherStream::CIPHER_ENCRYPT, CONTAINS_CIPHERSUITE_PARAMS, CONTAINS_SECURITY_RESULT, copyEID(), encapsulated_block, dtn::data::Bundle::erase(), ibrcommon::AES128Stream::getIV(), ibrcommon::AES128Stream::getTag(), initialization_vector, dtn::data::Bundle::insert(), ibrcommon::AES128Stream::iv_len, and ibrcommon::AES128Stream::tag_len.

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bool dtn::security::SecurityBlock::getKey	(	const TLVList &	security_parameter,
		unsigned char *	key,
		dtn::data::Length	key_size,
		RSA *	rsa
	)

staticprotected

Reads a symmetric key TLV object from a string.

Parameters

securiy_parameter	the TLVs containing string
key	pointer to an array to which the key will be written
key_size	size of the array
rsa	object containing the private key for decryption of the symmetric key

Returns: true if the key has been successfully decrypted

Definition at line 547 of file SecurityBlock.cpp.

References ibrcommon::LogLevel::critical, dtn::security::SecurityBlock::TLVList::get(), IBRCOMMON_LOGGER_ENDL, IBRCOMMON_LOGGER_ex, and key_information.

Referenced by dtn::security::ExtensionSecurityBlock::decrypt(), and dtn::security::PayloadConfidentialBlock::decrypt().

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dtn::data::Length dtn::security::SecurityBlock::getLength ( ) const

virtual

Returns the length of this Block

Returns: the length

Implements dtn::data::Block.

Definition at line 301 of file SecurityBlock.cpp.

References _ciphersuite_flags, _ciphersuite_id, _ciphersuite_params, _correlator, CONTAINS_CIPHERSUITE_PARAMS, CONTAINS_CORRELATOR, CONTAINS_SECURITY_RESULT, dtn::data::SDNV< E >::get(), dtn::data::SDNV< E >::getLength(), dtn::security::SecurityBlock::TLVList::getLength(), and getSecurityResultSize().

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dtn::data::Length dtn::security::SecurityBlock::getLength_mutable ( ) const

virtual

Returns the length of this Block if it would serialized in mutable canonical form

Returns: the length in mutable canonical form

Definition at line 326 of file SecurityBlock.cpp.

References _ciphersuite_flags, _ciphersuite_params, CONTAINS_CIPHERSUITE_PARAMS, CONTAINS_CORRELATOR, CONTAINS_SECURITY_RESULT, dtn::security::SecurityBlock::TLVList::getLength(), getSecurityResultSize(), and dtn::security::MutualSerializer::sdnv_size.

Referenced by dtn::security::MutualSerializer::getLength(), and dtn::security::MutualSerializer::operator<<().

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uint32_t dtn::security::SecurityBlock::getSalt ( const TLVList & security_parameters )

staticprotected

Reads a salt TLV from a string containing TLVs

Parameters

security_parameters string containing TLVs

Definition at line 591 of file SecurityBlock.cpp.

References dtn::security::SecurityBlock::TLVList::get(), and salt.

Referenced by dtn::security::ExtensionSecurityBlock::decrypt(), and dtn::security::PayloadConfidentialBlock::decrypt().

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const dtn::data::EID dtn::security::SecurityBlock::getSecurityDestination ( ) const

Returns the Security destination of a SecurityBlock or dtn:none if none exists

Definition at line 246 of file SecurityBlock.cpp.

References _security_destination.

Referenced by getSecurityDestination(), and isSecurityDestination().

const dtn::data::EID dtn::security::SecurityBlock::getSecurityDestination ( const dtn::data::Bundle & bundle ) const

Returns the security destination of a given block

Parameters

bundle the bundle to which the block belongs to

Returns: the security destination

Definition at line 714 of file SecurityBlock.cpp.

References dtn::data::PrimaryBlock::destination, dtn::data::EID::getNode(), and getSecurityDestination().

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dtn::data::Length dtn::security::SecurityBlock::getSecurityResultSize ( ) const

protectedvirtual

Returns the size of the security result if it would be serialized, even if it is empty. This is needed for canonicalisation. If it is empty this will be zero. There is no way to know how big will a payload be in advance. Children have to override it for the canonicalisation forms if nessessary (especial BundleAuthenticationBlock and PayloadIntegrityBlock).

Returns: the size of the serialized security result

Reimplemented in dtn::security::BundleAuthenticationBlock, and dtn::security::PayloadIntegrityBlock.

Definition at line 507 of file SecurityBlock.cpp.

References _security_result, and dtn::security::SecurityBlock::TLVList::getLength().

Referenced by getLength(), getLength_mutable(), dtn::security::PayloadIntegrityBlock::getSecurityResultSize(), serialize_mutable_without_security_result(), and serialize_strict().

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const dtn::data::EID dtn::security::SecurityBlock::getSecuritySource ( ) const

Returns the Security source of a SecurityBlock or dtn:none if none exists

Definition at line 241 of file SecurityBlock.cpp.

References _security_source.

Referenced by getSecuritySource(), isSecuritySource(), dtn::security::SecurityManager::verifyBAB(), and dtn::security::SecurityManager::verifyPIB().

const dtn::data::EID dtn::security::SecurityBlock::getSecuritySource ( const dtn::data::Bundle & bundle ) const

Returns the security source of a given block

Parameters

bundle the bundle to which the block belongs to

Returns: the security source

Definition at line 706 of file SecurityBlock.cpp.

References dtn::data::EID::getNode(), getSecuritySource(), and dtn::data::PrimaryBlock::source.

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bool dtn::security::SecurityBlock::isCorrelatorPresent	(	const dtn::data::Bundle &	bundle,
		const dtn::data::Number &	correlator
	)

staticprotected

Checks if the given correlator value is used in the bundle

Parameters

bundle	the bundle in which shall be searched for correlators
correlator	the correlator to be tested for uniqueness

Returns: false if correlator is unique, true otherwise

Definition at line 274 of file SecurityBlock.cpp.

References _correlator, dtn::data::Bundle::begin(), BUNDLE_AUTHENTICATION_BLOCK, dtn::data::Bundle::end(), EXTENSION_SECURITY_BLOCK, dtn::data::Block::getType(), PAYLOAD_CONFIDENTIAL_BLOCK, and PAYLOAD_INTEGRITY_BLOCK.

Referenced by createCorrelatorValue().

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bool dtn::security::SecurityBlock::isSecurityDestination	(	const dtn::data::Bundle &	bundle,
		const dtn::data::EID &	eid
	)		const

Checks if the given EID is a security destination for the given block

Parameters

bundle	the bundle to which the block belongs to
eid	the eid of the destination

Returns: true if eid is the security destination, false if not

Definition at line 700 of file SecurityBlock.cpp.

References dtn::data::EID::getNode(), getSecurityDestination(), dtn::data::EID::getString(), IBRCOMMON_LOGGER_DEBUG_TAG, and IBRCOMMON_LOGGER_ENDL.

Referenced by dtn::security::PayloadConfidentialBlock::decrypt(), and dtn::security::SecurityManager::verifyPIB().

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bool dtn::security::SecurityBlock::isSecuritySource	(	const dtn::data::Bundle &	bundle,
		const dtn::data::EID &	eid
	)		const

Checks if the given EID is a security source for the given block

Parameters

bundle	the bundle to which the block belongs to
eid	the eid of the source

Returns: true if eid is the security source, false if not

Definition at line 694 of file SecurityBlock.cpp.

References dtn::data::EID::getNode(), getSecuritySource(), dtn::data::EID::getString(), IBRCOMMON_LOGGER_DEBUG_TAG, and IBRCOMMON_LOGGER_ENDL.

Referenced by dtn::security::BundleAuthenticationBlock::verify().

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std::ostream & dtn::security::SecurityBlock::serialize	(	std::ostream &	stream,
		dtn::data::Length &	length
	)		const

virtual

Serializes this Block into stream

Parameters

the	stream in which should be written

Returns: the same stream as the input stream

Implements dtn::data::Block.

Definition at line 355 of file SecurityBlock.cpp.

References _ciphersuite_flags, _ciphersuite_id, _ciphersuite_params, _correlator, _security_result, CONTAINS_CIPHERSUITE_PARAMS, CONTAINS_CORRELATOR, and CONTAINS_SECURITY_RESULT.

dtn::security::MutualSerializer & dtn::security::SecurityBlock::serialize_mutable ( MutualSerializer & serializer ) const

protectedvirtual

Canonicalizes the block into the stream.

Parameters

stream the stream to be written into

Returns: the same stream as the parameter for chaining

Definition at line 465 of file SecurityBlock.cpp.

References _ciphersuite_flags, _ciphersuite_id, _ciphersuite_params, _security_result, CONTAINS_CIPHERSUITE_PARAMS, CONTAINS_CORRELATOR, and CONTAINS_SECURITY_RESULT.

dtn::security::MutualSerializer & dtn::security::SecurityBlock::serialize_mutable_without_security_result ( MutualSerializer & serializer ) const

protectedvirtual

Definition at line 486 of file SecurityBlock.cpp.

References _ciphersuite_flags, _ciphersuite_id, _ciphersuite_params, CONTAINS_CIPHERSUITE_PARAMS, CONTAINS_CORRELATOR, CONTAINS_SECURITY_RESULT, and getSecurityResultSize().

Referenced by dtn::security::MutualSerializer::operator<<().

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std::ostream & dtn::security::SecurityBlock::serialize_strict	(	std::ostream &	stream,
		dtn::data::Length &	length
	)		const

virtual

Serializes this block in a strict form. That skips all dynamic field like the security result.

Parameters

stream

Returns

Reimplemented from dtn::data::Block.

Definition at line 377 of file SecurityBlock.cpp.

References _ciphersuite_flags, _ciphersuite_id, _ciphersuite_params, _correlator, CONTAINS_CIPHERSUITE_PARAMS, CONTAINS_CORRELATOR, CONTAINS_SECURITY_RESULT, and getSecurityResultSize().

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void dtn::security::SecurityBlock::setCiphersuiteId ( const CIPHERSUITE_IDS id )

protected

Sets the ciphersuite id

Parameters

id	ciphersuite id

Definition at line 263 of file SecurityBlock.cpp.

References _ciphersuite_id.

Referenced by dtn::security::BundleAuthenticationBlock::auth(), and dtn::security::PayloadIntegrityBlock::sign().

void dtn::security::SecurityBlock::setCorrelator ( const dtn::data::Number & corr )

protected

Sets the correlator

Parameters

corr	correlator value

Definition at line 268 of file SecurityBlock.cpp.

References _ciphersuite_flags, _correlator, and CONTAINS_CORRELATOR.

Referenced by dtn::security::BundleAuthenticationBlock::auth(), and dtn::security::PayloadConfidentialBlock::encrypt().

void dtn::security::SecurityBlock::setSecurityDestination ( const dtn::data::EID & destination )

Sets the security destination of this block

Parameters

destination the security destination

Definition at line 257 of file SecurityBlock.cpp.

References _security_destination, and store_security_references().

Referenced by dtn::security::ExtensionSecurityBlock::encrypt(), dtn::security::PayloadConfidentialBlock::encrypt(), and dtn::security::PayloadIntegrityBlock::sign().

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void dtn::security::SecurityBlock::setSecuritySource ( const dtn::data::EID & source )

Sets the security source of this block

Parameters

source the security source

Definition at line 251 of file SecurityBlock.cpp.

References _security_source, and store_security_references().

Referenced by dtn::security::BundleAuthenticationBlock::auth(), dtn::security::ExtensionSecurityBlock::encrypt(), dtn::security::PayloadConfidentialBlock::encrypt(), and dtn::security::PayloadIntegrityBlock::sign().

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void dtn::security::SecurityBlock::store_security_references ( )

protected

stores the security source and destination in the EID reference list

Definition at line 204 of file SecurityBlock.cpp.

References _ciphersuite_flags, dtn::data::Block::_eids, _security_destination, _security_source, CONTAINS_SECURITY_DESTINATION, and CONTAINS_SECURITY_SOURCE.

Referenced by setSecurityDestination(), and setSecuritySource().

Friends And Related Function Documentation

friend class MutualSerializer

friend

Definition at line 61 of file SecurityBlock.h.

friend class StrictSerializer

friend

Definition at line 60 of file SecurityBlock.h.

Member Data Documentation

dtn::data::Bitset<CIPHERSUITE_FLAGS> dtn::security::SecurityBlock::_ciphersuite_flags

protected

the ciphersuite flags tell if security result or parameters are

used, if the security destination or source is set and if a correlator is used

Definition at line 247 of file SecurityBlock.h.

Referenced by dtn::security::BundleAuthenticationBlock::auth(), dtn::security::PayloadConfidentialBlock::decrypt(), decryptBlock(), deserialize(), dtn::security::ExtensionSecurityBlock::encrypt(), dtn::security::PayloadConfidentialBlock::encrypt(), getLength(), getLength_mutable(), dtn::security::StrictSerializer::operator<<(), serialize(), serialize_mutable(), serialize_mutable_without_security_result(), serialize_strict(), setCorrelator(), dtn::security::PayloadIntegrityBlock::sign(), store_security_references(), dtn::security::BundleAuthenticationBlock::strip(), and dtn::security::BundleAuthenticationBlock::verify().

dtn::data::Number dtn::security::SecurityBlock::_ciphersuite_id

protected

the ciphersuite id tells what type of encryption, signature or MAC

is used

Definition at line 243 of file SecurityBlock.h.

Referenced by dtn::security::PayloadConfidentialBlock::decrypt(), deserialize(), getLength(), serialize(), serialize_mutable(), serialize_mutable_without_security_result(), serialize_strict(), setCiphersuiteId(), and dtn::security::BundleAuthenticationBlock::verify().

TLVList dtn::security::SecurityBlock::_ciphersuite_params

protected

you can find e.g. key information, tags, salts,

initialization_vectors stored als TLVs here

Definition at line 253 of file SecurityBlock.h.

Referenced by dtn::security::ExtensionSecurityBlock::decrypt(), dtn::security::PayloadConfidentialBlock::decrypt(), decryptBlock(), dtn::security::PayloadConfidentialBlock::decryptPayload(), deserialize(), dtn::security::ExtensionSecurityBlock::encrypt(), dtn::security::PayloadConfidentialBlock::encrypt(), getLength(), getLength_mutable(), serialize(), serialize_mutable(), serialize_mutable_without_security_result(), serialize_strict(), and dtn::security::PayloadIntegrityBlock::sign().

dtn::data::Number dtn::security::SecurityBlock::_correlator

protected

a correlator binds several security blocks in a bundle together

Definition at line 249 of file SecurityBlock.h.

Referenced by dtn::security::PayloadConfidentialBlock::decrypt(), dtn::security::ExtensionSecurityBlock::decrypt(), deserialize(), getLength(), isCorrelatorPresent(), dtn::security::StrictSerializer::operator<<(), serialize(), serialize_strict(), setCorrelator(), dtn::security::BundleAuthenticationBlock::strip(), and dtn::security::BundleAuthenticationBlock::verify().

dtn::data::EID dtn::security::SecurityBlock::_security_destination

protected

security destination: only set if differs from primary header

Definition at line 259 of file SecurityBlock.h.

Referenced by deserialize(), getSecurityDestination(), setSecurityDestination(), and store_security_references().

TLVList dtn::security::SecurityBlock::_security_result

protected

you can find encrypted blocks, signatures or MACs here

Definition at line 256 of file SecurityBlock.h.

Referenced by dtn::security::BundleAuthenticationBlock::auth(), decryptBlock(), dtn::security::PayloadConfidentialBlock::decryptPayload(), dtn::security::PayloadIntegrityBlock::deserialize(), deserialize(), dtn::security::PayloadConfidentialBlock::encrypt(), getSecurityResultSize(), serialize(), serialize_mutable(), dtn::security::PayloadIntegrityBlock::sign(), and dtn::security::BundleAuthenticationBlock::verify().

dtn::data::EID dtn::security::SecurityBlock::_security_source

protected

security source: only set if differs from primary header

Definition at line 262 of file SecurityBlock.h.

Referenced by deserialize(), getSecuritySource(), setSecuritySource(), and store_security_references().

The documentation for this class was generated from the following files:

ibrdtn/ibrdtn/security/SecurityBlock.h
ibrdtn/ibrdtn/security/SecurityBlock.cpp

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