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/*
* Context structure declaration of the Mbed TLS software-based PSA drivers
* called through the PSA Crypto driver dispatch layer.
* This file contains the context structures of key derivation algorithms
* which need to rely on other algorithms.
*
* \note This file may not be included directly. Applications must
* include psa/crypto.h.
*
* \note This header and its content are not part of the Mbed TLS API and
* applications must not depend on it. Its main purpose is to define the
* multi-part state objects of the Mbed TLS software-based PSA drivers. The
* definitions of these objects are then used by crypto_struct.h to define the
* implementation-defined types of PSA multi-part state objects.
*/
/*
* Copyright The Mbed TLS Contributors
* SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
*/
#ifndef PSA_CRYPTO_BUILTIN_KEY_DERIVATION_H
#define PSA_CRYPTO_BUILTIN_KEY_DERIVATION_H
#include "mbedtls/private_access.h"
#include <psa/crypto_driver_common.h>
#if defined(MBEDTLS_PSA_BUILTIN_ALG_HKDF) || \
defined(MBEDTLS_PSA_BUILTIN_ALG_HKDF_EXTRACT) || \
defined(MBEDTLS_PSA_BUILTIN_ALG_HKDF_EXPAND)
typedef struct {
uint8_t *MBEDTLS_PRIVATE(info);
size_t MBEDTLS_PRIVATE(info_length);
#if PSA_HASH_MAX_SIZE > 0xff
#error "PSA_HASH_MAX_SIZE does not fit in uint8_t"
#endif
uint8_t MBEDTLS_PRIVATE(offset_in_block);
uint8_t MBEDTLS_PRIVATE(block_number);
unsigned int MBEDTLS_PRIVATE(state) : 2;
unsigned int MBEDTLS_PRIVATE(info_set) : 1;
uint8_t MBEDTLS_PRIVATE(output_block)[PSA_HASH_MAX_SIZE];
uint8_t MBEDTLS_PRIVATE(prk)[PSA_HASH_MAX_SIZE];
struct psa_mac_operation_s MBEDTLS_PRIVATE(hmac);
} psa_hkdf_key_derivation_t;
#endif /* MBEDTLS_PSA_BUILTIN_ALG_HKDF ||
MBEDTLS_PSA_BUILTIN_ALG_HKDF_EXTRACT ||
MBEDTLS_PSA_BUILTIN_ALG_HKDF_EXPAND */
#if defined(MBEDTLS_PSA_BUILTIN_ALG_TLS12_ECJPAKE_TO_PMS)
typedef struct {
uint8_t MBEDTLS_PRIVATE(data)[PSA_TLS12_ECJPAKE_TO_PMS_DATA_SIZE];
} psa_tls12_ecjpake_to_pms_t;
#endif /* MBEDTLS_PSA_BUILTIN_ALG_TLS12_ECJPAKE_TO_PMS */
#if defined(MBEDTLS_PSA_BUILTIN_ALG_TLS12_PRF) || \
defined(MBEDTLS_PSA_BUILTIN_ALG_TLS12_PSK_TO_MS)
typedef enum {
PSA_TLS12_PRF_STATE_INIT, /* no input provided */
PSA_TLS12_PRF_STATE_SEED_SET, /* seed has been set */
PSA_TLS12_PRF_STATE_OTHER_KEY_SET, /* other key has been set - optional */
PSA_TLS12_PRF_STATE_KEY_SET, /* key has been set */
PSA_TLS12_PRF_STATE_LABEL_SET, /* label has been set */
PSA_TLS12_PRF_STATE_OUTPUT /* output has been started */
} psa_tls12_prf_key_derivation_state_t;
typedef struct psa_tls12_prf_key_derivation_s {
#if PSA_HASH_MAX_SIZE > 0xff
#error "PSA_HASH_MAX_SIZE does not fit in uint8_t"
#endif
/* Indicates how many bytes in the current HMAC block have
* not yet been read by the user. */
uint8_t MBEDTLS_PRIVATE(left_in_block);
/* The 1-based number of the block. */
uint8_t MBEDTLS_PRIVATE(block_number);
psa_tls12_prf_key_derivation_state_t MBEDTLS_PRIVATE(state);
uint8_t *MBEDTLS_PRIVATE(secret);
size_t MBEDTLS_PRIVATE(secret_length);
uint8_t *MBEDTLS_PRIVATE(seed);
size_t MBEDTLS_PRIVATE(seed_length);
uint8_t *MBEDTLS_PRIVATE(label);
size_t MBEDTLS_PRIVATE(label_length);
#if defined(MBEDTLS_PSA_BUILTIN_ALG_TLS12_PSK_TO_MS)
uint8_t *MBEDTLS_PRIVATE(other_secret);
size_t MBEDTLS_PRIVATE(other_secret_length);
#endif /* MBEDTLS_PSA_BUILTIN_ALG_TLS12_PSK_TO_MS */
uint8_t MBEDTLS_PRIVATE(Ai)[PSA_HASH_MAX_SIZE];
/* `HMAC_hash( prk, A( i ) + seed )` in the notation of RFC 5246, Sect. 5. */
uint8_t MBEDTLS_PRIVATE(output_block)[PSA_HASH_MAX_SIZE];
} psa_tls12_prf_key_derivation_t;
#endif /* MBEDTLS_PSA_BUILTIN_ALG_TLS12_PRF) ||
* MBEDTLS_PSA_BUILTIN_ALG_TLS12_PSK_TO_MS */
#if defined(PSA_HAVE_SOFT_PBKDF2)
typedef enum {
PSA_PBKDF2_STATE_INIT, /* no input provided */
PSA_PBKDF2_STATE_INPUT_COST_SET, /* input cost has been set */
PSA_PBKDF2_STATE_SALT_SET, /* salt has been set */
PSA_PBKDF2_STATE_PASSWORD_SET, /* password has been set */
PSA_PBKDF2_STATE_OUTPUT /* output has been started */
} psa_pbkdf2_key_derivation_state_t;
typedef struct {
psa_pbkdf2_key_derivation_state_t MBEDTLS_PRIVATE(state);
uint64_t MBEDTLS_PRIVATE(input_cost);
uint8_t *MBEDTLS_PRIVATE(salt);
size_t MBEDTLS_PRIVATE(salt_length);
uint8_t MBEDTLS_PRIVATE(password)[PSA_HMAC_MAX_HASH_BLOCK_SIZE];
size_t MBEDTLS_PRIVATE(password_length);
uint8_t MBEDTLS_PRIVATE(output_block)[PSA_HASH_MAX_SIZE];
uint8_t MBEDTLS_PRIVATE(bytes_used);
uint32_t MBEDTLS_PRIVATE(block_number);
} psa_pbkdf2_key_derivation_t;
#endif /* PSA_HAVE_SOFT_PBKDF2 */
#endif /* PSA_CRYPTO_BUILTIN_KEY_DERIVATION_H */
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