skdp_client_state Struct Reference

The SKDP client state structure. More...

#include <skdpclient.h>

Data Fields
qsc_rcs_state	rxcpr
qsc_rcs_state	txcpr
uint8_t	ddk [SKDP_DDK_SIZE]
uint8_t	dsh [SKDP_STH_SIZE]
uint8_t	kid [SKDP_KID_SIZE]
uint8_t	ssh [SKDP_STH_SIZE]
uint64_t	expiration
uint64_t	rxseq
uint64_t	txseq
skdp_flags	exflag

Detailed Description

The SKDP client state structure.

This structure holds the state information for an SKDP client during a key exchange and ongoing communication session. It contains:

• rxcpr: The receive channel cipher state.
• txcpr: The transmit channel cipher state.
• ddk: The device derivation key.
• dsh: The device session hash, computed from the device identity, configuration, and a random token.
• kid: The device identity string.
• ssh: The server session hash received during the key exchange.
• expiration: The expiration time for the current session (in seconds from epoch).
• rxseq: The receive channel packet sequence number.
• txseq: The transmit channel packet sequence number.
• exflag: A flag indicating the progress/status of the key exchange.

Field Documentation

ddk

uint8_t ddk[SKDP_DDK_SIZE]

The device derivation key

dsh

uint8_t dsh[SKDP_STH_SIZE]

The device session hash

exflag

skdp_flags exflag

The key exchange (kex) position flag

expiration

uint64_t expiration

The expiration time, in seconds from epoch

kid

uint8_t kid[SKDP_KID_SIZE]

The device identity string

rxcpr

qsc_rcs_state rxcpr

The receive channel cipher state

rxseq

uint64_t rxseq

The receive channel packet sequence number

ssh

uint8_t ssh[SKDP_STH_SIZE]

The server session hash

txcpr

qsc_rcs_state txcpr

The transmit channel cipher state

txseq

uint64_t txseq

The transmit channel packet sequence number

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

• C:/Users/stepp/Documents/Visual Studio 2022/Projects/C/SKDP/SKDP/skdpclient.h