psa_key_derivation_operation_s Struct Reference

#include <crypto.h>

Data Fields
uint32_t	state
psa_algorithm_t	alg
psa_algorithm_t	agreement_alg
uint32_t	cost
uint32_t	sp800108_counter
uint32_t	sp800108_bits
size_t	capacity
size_t	info_length
uint8_t	salt [128]
uint8_t	prk [128]
uint8_t	block [64]
uint8_t	prf_a [64]
uint8_t	other_secret [64]
uint8_t	info [256]
uint16_t	salt_length
uint8_t	block_number
uint8_t	block_offset
uint8_t	prk_length
uint8_t	other_secret_length
uint8_t	flags
void *	key_references
psa_key_id_t	opaque_pbkdf2_key
psa_key_derivation_step_t	opaque_pbkdf2_step
size_t	opaque_salt_offset

Detailed Description

Key-derivation state.

agreement_alg holds the combined ECDH/KDF algorithm when applicable; alg holds the underlying KDF. HKDF information and PBKDF2 salt are limited to 256 bytes; TLS 1.2 seed is limited to 64 bytes, label to 256 bytes and PSK-to-MS other secret to 64 bytes. HKDF output is limited to 255 digest blocks, except HKDF-Extract, whose output is one digest. The other HMAC derivations support SHA-256/384/512 when enabled. SP 800-108 has a 128-byte label, 256-byte context and 32-bit counter; its initial capacity is 0x1fffffff bytes. The first output fixes L. Applications must treat the complete object as opaque.

Field Documentation

agreement_alg

psa_algorithm_t psa_key_derivation_operation_s::agreement_alg

alg

psa_algorithm_t psa_key_derivation_operation_s::alg

block

uint8_t psa_key_derivation_operation_s::block[64]

block_number

uint8_t psa_key_derivation_operation_s::block_number

block_offset

uint8_t psa_key_derivation_operation_s::block_offset

capacity

size_t psa_key_derivation_operation_s::capacity

cost

uint32_t psa_key_derivation_operation_s::cost

flags

uint8_t psa_key_derivation_operation_s::flags

info

uint8_t psa_key_derivation_operation_s::info[256]

info_length

size_t psa_key_derivation_operation_s::info_length

key_references

void* psa_key_derivation_operation_s::key_references

opaque_pbkdf2_key

psa_key_id_t psa_key_derivation_operation_s::opaque_pbkdf2_key

opaque_pbkdf2_step

psa_key_derivation_step_t psa_key_derivation_operation_s::opaque_pbkdf2_step

opaque_salt_offset

size_t psa_key_derivation_operation_s::opaque_salt_offset

other_secret

uint8_t psa_key_derivation_operation_s::other_secret[64]

other_secret_length

uint8_t psa_key_derivation_operation_s::other_secret_length

prf_a

uint8_t psa_key_derivation_operation_s::prf_a[64]

prk

uint8_t psa_key_derivation_operation_s::prk[128]

prk_length

uint8_t psa_key_derivation_operation_s::prk_length

salt

uint8_t psa_key_derivation_operation_s::salt[128]

salt_length

uint16_t psa_key_derivation_operation_s::salt_length

sp800108_bits

uint32_t psa_key_derivation_operation_s::sp800108_bits

sp800108_counter

uint32_t psa_key_derivation_operation_s::sp800108_counter

state

uint32_t psa_key_derivation_operation_s::state