Vol 3, Part H: 3.6.2 Encryption Information message. More...

#include <SMPTypes.hpp>

Inheritance diagram for direct_bt::SMPEncInfoMsg:

Collaboration diagram for direct_bt::SMPEncInfoMsg:

Public Member Functions
	SMPEncInfoMsg (const jau::uint128dp_t &long_term_key)

	SMPEncInfoMsg (const uint8_t *source, const jau::nsize_t length)

constexpr_cxx20 jau::nsize_t	getDataSize () const noexcept override
	Returns the required data size according to the specified packet, which should be within 0-22 or 64 octets. More...

constexpr jau::uint128dp_t	getLTK () const noexcept
	Returns the 128-bit Long Term Key (16 octets) More...

std::string	getName () const noexcept override

Public Member Functions inherited from direct_bt::SMPEncKeyByteStream
	SMPEncKeyByteStream (const Opcode opc, const jau::nsize_t size)
	Persistent memory, w/ ownership . More...

	SMPEncKeyByteStream (const uint8_t *source, const jau::nsize_t size)
	Persistent memory, w/ ownership . More...

	~SMPEncKeyByteStream () noexcept override=default

Public Member Functions inherited from direct_bt::SMPPDUMsg
	SMPPDUMsg (const Opcode opc, const jau::nsize_t size)
	Persistent memory, w/ ownership . More...

	SMPPDUMsg (const uint8_t *source, const jau::nsize_t size)
	Persistent memory, w/ ownership . More...

	SMPPDUMsg (const uint8_t *source, const jau::nsize_t size, const jau::nsize_t min_size)
	Persistent memory, w/ ownership . More...

virtual	~SMPPDUMsg () noexcept=default

constexpr jau::nsize_t	getDataOffset () const noexcept
	Returns the octet offset to the data segment in this PDU including the mandatory opcode, i.e. More...

virtual constexpr_cxx20 jau::nsize_t	getDataSize () const noexcept
	Returns the required data size according to the specified packet, which should be within 0-22 or 64 octets. More...

virtual std::string	getName () const noexcept

constexpr Opcode	getOpcode () const noexcept
	SMP Command Codes Vol 3, Part H (SM): 3.3. More...

constexpr jau::nsize_t	getPDUParamSize () const noexcept
	Returns the actual PDU size less one octet for the opcode, which should result in 0-22 octets or 64 octets. More...

constexpr uint64_t	getTimestamp () const noexcept

virtual std::string	toString () const noexcept

Protected Member Functions
std::string	valueString () const noexcept override

Protected Member Functions inherited from direct_bt::SMPPDUMsg
virtual std::string	baseString () const noexcept

void	check_range ()

void	checkOpcode (const Opcode exp1, const Opcode exp2) const

void	checkOpcode (const Opcode expected) const

virtual std::string	valueString () const noexcept

Additional Inherited Members
Public Types inherited from direct_bt::SMPPDUMsg
enum class	Opcode : uint8_t { UNDEFINED = 0x00 , PAIRING_REQUEST = 0x01 , PAIRING_RESPONSE = 0x02 , PAIRING_CONFIRM = 0x03 , PAIRING_RANDOM = 0x04 , PAIRING_FAILED = 0x05 , ENCRYPTION_INFORMATION = 0x06 , MASTER_IDENTIFICATION = 0x07 , IDENTITY_INFORMATION = 0x08 , IDENTITY_ADDRESS_INFORMATION = 0x09 , SIGNING_INFORMATION = 0x0A , SECURITY_REQUEST = 0x0B , PAIRING_PUBLIC_KEY = 0x0C , PAIRING_DHKEY_CHECK = 0x0D , PAIRING_KEYPRESS_NOTIFICATION = 0x0E }
	SMP Command Codes Vol 3, Part H (SM): 3.3. More...

Static Public Member Functions inherited from direct_bt::SMPPDUMsg
template<class T >
static T *	clone (const T &source) noexcept
	Clone template for convenience, based on derived class's copy-constructor. More...

static std::string	getOpcodeString (const Opcode opc) noexcept

static std::unique_ptr< const SMPPDUMsg >	getSpecialized (const uint8_t *buffer, jau::nsize_t const buffer_size) noexcept
	Return a newly created specialized instance pointer to base class. More...

static constexpr uint8_t	number (const Opcode rhs) noexcept

Protected Attributes inherited from direct_bt::SMPPDUMsg
jau::POctets	pdu
	actual received PDU More...

uint64_t	ts_creation
	creation timestamp in milliseconds More...

Detailed Description

Vol 3, Part H: 3.6.2 Encryption Information message.

Vol 3 (Host), Part H (SM): 3 (SMP), 3.6 SECURITY IN BLUETOOTH LOW ENERGY
Vol 3 (Host), Part H (SM): 3 (SMP), 3.6.1 Key distribution and generation
Vol 3 (Host), Part H (SM): 2 (SM), 2.4.1 Definition of keys and values

Opcode::ENCRYPTION_INFORMATION

[uint8_t opcode]
jau::uint128_t long_term_key

Message is used in the LE legacy pairing Transport Specific Key Distribution to distribute Long Term Key (LTK) that is used when encrypting future connections.

The message shall only be sent when the link has been encrypted or re-encrypted using the generated LTK.

Legacy: #1 in distribution, first value.

Notable: No endian wise conversion shall occur on this data, since the encryption values are interpreted as little-endian or as a byte stream.

Definition at line 1678 of file SMPTypes.hpp.

Constructor & Destructor Documentation

◆ SMPEncInfoMsg() [1/2]

direct_bt::SMPEncInfoMsg::SMPEncInfoMsg	(	const uint8_t *	source,
		const jau::nsize_t	length
	)

inline

Definition at line 1681 of file SMPTypes.hpp.

◆ SMPEncInfoMsg() [2/2]

direct_bt::SMPEncInfoMsg::SMPEncInfoMsg ( const jau::uint128dp_t & long_term_key )

inline

Definition at line 1688 of file SMPTypes.hpp.

Member Function Documentation

◆ getDataSize()

constexpr_cxx20 jau::nsize_t direct_bt::SMPEncInfoMsg::getDataSize ( ) const

inlineoverridevirtualnoexcept

Returns the required data size according to the specified packet, which should be within 0-22 or 64 octets.

See also: SMPPDUMsg::getPDUParamSize()

Reimplemented from direct_bt::SMPPDUMsg.

Definition at line 1695 of file SMPTypes.hpp.

◆ getLTK()

constexpr jau::uint128dp_t direct_bt::SMPEncInfoMsg::getLTK ( ) const

inlineconstexprnoexcept

Returns the 128-bit Long Term Key (16 octets)

The generated LTK value being distributed, see Vol 3, Part H, 2.4.2.3 SM - LE legacy pairing - generation of LTK, EDIV and Rand.

Definition at line 1706 of file SMPTypes.hpp.

◆ getName()

std::string direct_bt::SMPEncInfoMsg::getName ( ) const

inlineoverridevirtualnoexcept

Reimplemented from direct_bt::SMPPDUMsg.

Definition at line 1708 of file SMPTypes.hpp.

◆ valueString()

std::string direct_bt::SMPEncInfoMsg::valueString ( ) const

inlineoverrideprotectedvirtualnoexcept

Reimplemented from direct_bt::SMPPDUMsg.

Definition at line 1713 of file SMPTypes.hpp.

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

api/direct_bt/SMPTypes.hpp

Public Member Functions

Protected Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ SMPEncInfoMsg() [1/2]

◆ SMPEncInfoMsg() [2/2]

Member Function Documentation

◆ getDataSize()

◆ getLTK()

◆ getName()

◆ valueString()