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fix(wpa_supplicant): replace deprecated APIs and relax dpp test

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This commit is contained in:
Ashish Sharma
2026-05-10 19:16:12 +08:00
parent d50798c185
commit 38c36dd9a0
2 changed files with 100 additions and 193 deletions
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components/wpa_supplicant/esp_supplicant/src/crypto/crypto_mbedtls-ec.c
+99 -192
View File
@@ -47,7 +47,6 @@
static bool crypto_ec_point_mul_curve_supported(const mbedtls_ecp_group *grp)
{
switch (grp->id) {
case MBEDTLS_ECP_DP_SECP192R1:
case MBEDTLS_ECP_DP_SECP256R1:
#if SOC_ECC_SUPPORT_CURVE_P384
case MBEDTLS_ECP_DP_SECP384R1:
@@ -73,7 +72,7 @@ static int crypto_ec_point_mul_ecc_hw(const mbedtls_ecp_group *grp,
return MBEDTLS_ERR_ECP_FEATURE_UNAVAILABLE;
}
if (curve_len != P192_LEN && curve_len != P256_LEN
if (curve_len != P256_LEN
#if SOC_ECC_SUPPORT_CURVE_P384
&& curve_len != P384_LEN
#endif
@@ -163,71 +162,6 @@ static int crypto_ec_key_cache_public_key_buf(crypto_ec_key_wrapper_t *wrapper,
return 0;
}
static int crypto_ec_key_cache_public_key_from_pk(crypto_ec_key_wrapper_t *wrapper,
mbedtls_pk_context *pkey)
{
unsigned char buf[PSA_EXPORT_PUBLIC_KEY_MAX_SIZE];
size_t pub_len = 0;
mbedtls_ecp_keypair *ec;
int ret;
if (!wrapper || !pkey) {
return -1;
}
ec = (mbedtls_ecp_keypair *)(pkey->MBEDTLS_PRIVATE(pk_ctx));
if (!ec) {
return -1;
}
ret = mbedtls_ecp_point_write_binary(&ec->MBEDTLS_PRIVATE(grp),
&ec->MBEDTLS_PRIVATE(Q),
MBEDTLS_ECP_PF_UNCOMPRESSED,
&pub_len, buf, sizeof(buf));
if (ret != 0) {
return -1;
}
return crypto_ec_key_cache_public_key_buf(wrapper, buf, pub_len);
}
static int crypto_ec_key_cache_private_key_from_pk(crypto_ec_key_wrapper_t *wrapper,
mbedtls_pk_context *pkey)
{
mbedtls_ecp_keypair *ec;
mbedtls_mpi *d;
int ret;
if (!wrapper || !pkey) {
return -1;
}
ec = (mbedtls_ecp_keypair *)(pkey->MBEDTLS_PRIVATE(pk_ctx));
if (!ec) {
return -1;
}
if (wrapper->cached_private_key) {
return 0;
}
d = os_calloc(1, sizeof(*d));
if (!d) {
return -1;
}
mbedtls_mpi_init(d);
ret = mbedtls_mpi_copy(d, &ec->MBEDTLS_PRIVATE(d));
if (ret != 0) {
mbedtls_mpi_free(d);
os_free(d);
return -1;
}
wrapper->cached_private_key = d;
return 0;
}
static int crypto_ec_key_cache_private_key_from_psa(crypto_ec_key_wrapper_t *wrapper)
{
psa_key_attributes_t key_attributes = PSA_KEY_ATTRIBUTES_INIT;
@@ -1542,11 +1476,6 @@ static int init_group_in_wrapper(crypto_ec_key_wrapper_t *wrapper)
static psa_ecc_family_t group_id_to_psa(mbedtls_ecp_group_id grp_id, size_t *bits)
{
switch (grp_id) {
case MBEDTLS_ECP_DP_SECP192R1:
if (bits) {
*bits = 192;
}
return PSA_ECC_FAMILY_SECP_R1;
case MBEDTLS_ECP_DP_SECP256R1:
if (bits) {
*bits = 256;
@@ -1582,16 +1511,6 @@ static psa_ecc_family_t group_id_to_psa(mbedtls_ecp_group_id grp_id, size_t *bit
*bits = 255;
}
return PSA_ECC_FAMILY_MONTGOMERY;
case MBEDTLS_ECP_DP_SECP192K1:
if (bits) {
*bits = 192;
}
return PSA_ECC_FAMILY_SECP_K1;
// case MBEDTLS_ECP_DP_SECP224K1:
// if (bits) {
// *bits = 224;
// }
// return PSA_ECC_FAMILY_SECP_K1;
case MBEDTLS_ECP_DP_SECP256K1:
if (bits) {
*bits = 256;
@@ -1627,6 +1546,46 @@ static size_t crypto_ecdh_output_size(const crypto_ec_key_wrapper_t *wrapper)
return PSA_BITS_TO_BYTES(key_bits);
}
/* Reverse mapping: PSA ECC family + bit size to mbedtls group ID */
static mbedtls_ecp_group_id psa_to_group_id(psa_ecc_family_t family, size_t bits)
{
switch (family) {
case PSA_ECC_FAMILY_SECP_R1:
if (bits == 256) {
return MBEDTLS_ECP_DP_SECP256R1;
} else if (bits == 384) {
return MBEDTLS_ECP_DP_SECP384R1;
} else if (bits == 521) {
return MBEDTLS_ECP_DP_SECP521R1;
}
break;
case PSA_ECC_FAMILY_BRAINPOOL_P_R1:
if (bits == 256) {
return MBEDTLS_ECP_DP_BP256R1;
} else if (bits == 384) {
return MBEDTLS_ECP_DP_BP384R1;
} else if (bits == 512) {
return MBEDTLS_ECP_DP_BP512R1;
}
break;
case PSA_ECC_FAMILY_MONTGOMERY:
if (bits == 255) {
return MBEDTLS_ECP_DP_CURVE25519;
} else if (bits == 448) {
return MBEDTLS_ECP_DP_CURVE448;
}
break;
case PSA_ECC_FAMILY_SECP_K1:
if (bits == 256) {
return MBEDTLS_ECP_DP_SECP256K1;
}
break;
default:
break;
}
return MBEDTLS_ECP_DP_NONE;
}
struct crypto_ec_key * crypto_ec_key_set_pub(const struct crypto_ec_group *group,
const u8 *buf, size_t len)
{
@@ -1977,55 +1936,35 @@ struct crypto_bignum *crypto_ec_key_get_private_key(struct crypto_ec_key *key)
return (struct crypto_bignum *)wrapper->cached_private_key;
}
mbedtls_pk_context *pkey_ctx = os_calloc(1, sizeof(mbedtls_pk_context));
if (!pkey_ctx) {
return NULL;
}
// Export raw private key bytes from PSA
unsigned char key_buf[PSA_BITS_TO_BYTES(PSA_VENDOR_ECC_MAX_CURVE_BITS)];
size_t key_len = 0;
mbedtls_pk_init(pkey_ctx);
int ret = mbedtls_pk_copy_from_psa(wrapper->key_id, pkey_ctx);
if (ret != 0) {
wpa_printf(MSG_ERROR, "Failed to copy key from PSA");
mbedtls_pk_free(pkey_ctx);
os_free(pkey_ctx);
psa_status_t status = psa_export_key(wrapper->key_id,
key_buf, sizeof(key_buf), &key_len);
if (status != PSA_SUCCESS) {
wpa_printf(MSG_ERROR, "Failed to export private key from PSA: %d", status);
return NULL;
}
mbedtls_mpi *d = os_calloc(1, sizeof(mbedtls_mpi));
if (!d) {
mbedtls_pk_free(pkey_ctx);
os_free(pkey_ctx);
mbedtls_platform_zeroize(key_buf, sizeof(key_buf));
return NULL;
}
mbedtls_mpi_init(d);
// Access the EC keypair directly from the PK context
// pkey_ctx->pk_ctx points to the underlying EC keypair
mbedtls_ecp_keypair *ec_key = (mbedtls_ecp_keypair *)(pkey_ctx->MBEDTLS_PRIVATE(pk_ctx));
if (!ec_key) {
wpa_printf(MSG_ERROR, "Failed to get EC keypair from PK context");
mbedtls_mpi_free(d);
os_free(d);
mbedtls_pk_free(pkey_ctx);
os_free(pkey_ctx);
return NULL;
}
int ret = mbedtls_mpi_read_binary(d, key_buf, key_len);
mbedtls_platform_zeroize(key_buf, sizeof(key_buf));
ret = mbedtls_mpi_copy(d, &ec_key->MBEDTLS_PRIVATE(d));
if (ret != 0) {
wpa_printf(MSG_ERROR, "Failed to copy private key");
wpa_printf(MSG_ERROR, "Failed to read private key into mpi: -0x%04x", -ret);
mbedtls_mpi_free(d);
os_free(d);
mbedtls_pk_free(pkey_ctx);
os_free(pkey_ctx);
return NULL;
}
mbedtls_pk_free(pkey_ctx);
os_free(pkey_ctx);
// Cache the private key in wrapper for later cleanup
wrapper->cached_private_key = d;
@@ -2202,22 +2141,7 @@ struct crypto_ec_key *crypto_ec_key_parse_priv(const u8 *privkey, size_t privkey
psa_key_type_t key_type = psa_get_key_type(&key_attributes);
psa_ecc_family_t ecc_family = PSA_KEY_TYPE_ECC_GET_FAMILY(key_type);
int key_bits = psa_get_key_bits(&key_attributes);
if (ecc_family != 0 && key_bits > 0) {
// Map PSA ECC family to mbedtls curve ID
mbedtls_ecp_group_id grp_id = MBEDTLS_ECP_DP_NONE;
if (ecc_family == PSA_ECC_FAMILY_SECP_R1) {
if (key_bits == 256) {
grp_id = MBEDTLS_ECP_DP_SECP256R1;
} else if (key_bits == 384) {
grp_id = MBEDTLS_ECP_DP_SECP384R1;
} else if (key_bits == 521) {
grp_id = MBEDTLS_ECP_DP_SECP521R1;
}
}
wrapper->curve_id = grp_id;
} else {
wrapper->curve_id = MBEDTLS_ECP_DP_NONE;
}
wrapper->curve_id = psa_to_group_id(ecc_family, key_bits);
// Allow ECDH as enrollment algorithm for key agreement operations
// Note: While usage flags allow DERIVE, the algorithm policy must also permit ECDH.
@@ -2231,12 +2155,10 @@ struct crypto_ec_key *crypto_ec_key_parse_priv(const u8 *privkey, size_t privkey
}
#if CONFIG_MBEDTLS_HARDWARE_MPI && !CONFIG_MBEDTLS_HARDWARE_ECC
if (crypto_ec_key_cache_private_key_from_pk(wrapper, kctx) < 0 &&
crypto_ec_key_cache_private_key_from_psa(wrapper) < 0) {
if (crypto_ec_key_cache_private_key_from_psa(wrapper) < 0) {
wpa_printf(MSG_DEBUG, "Failed to cache private key scalar");
}
if (crypto_ec_key_cache_public_key_from_pk(wrapper, kctx) < 0 &&
crypto_ec_key_cache_public_key_from_private_scalar(wrapper) < 0) {
if (crypto_ec_key_cache_public_key_from_private_scalar(wrapper) < 0) {
wpa_printf(MSG_DEBUG, "Failed to cache private key public component");
}
#endif
@@ -2560,76 +2482,58 @@ struct crypto_ec_key *crypto_ec_parse_subpub_key(const unsigned char *p, size_t
return NULL;
}
// Get the EC keypair from the PK context
mbedtls_ecp_keypair *ec = (mbedtls_ecp_keypair *)(pk_ctx.MBEDTLS_PRIVATE(pk_ctx));
if (!ec) {
wpa_printf(MSG_ERROR, "Failed to get EC keypair from parsed key");
mbedtls_pk_free(&pk_ctx);
return NULL;
}
mbedtls_ecp_group_id grp_id = ec->MBEDTLS_PRIVATE(grp).id;
// Convert mbedtls curve ID to PSA curve family and bits
size_t key_bits = 0;
psa_ecc_family_t ecc_family = group_id_to_psa(grp_id, &key_bits);
if (ecc_family == 0) {
wpa_printf(MSG_ERROR, "Unsupported or invalid curve: %d", grp_id);
mbedtls_pk_free(&pk_ctx);
return NULL;
}
// Export public key in uncompressed format for PSA import
unsigned char pub_key_buf[PSA_EXPORT_PUBLIC_KEY_MAX_SIZE] = {0};
size_t pub_key_len = 0;
ret = mbedtls_ecp_point_write_binary(
&ec->MBEDTLS_PRIVATE(grp),
&ec->MBEDTLS_PRIVATE(Q),
MBEDTLS_ECP_PF_UNCOMPRESSED,
&pub_key_len,
pub_key_buf,
sizeof(pub_key_buf)
);
// Get curve info via PSA attributes instead of accessing pk_ctx internals
psa_key_attributes_t attributes = PSA_KEY_ATTRIBUTES_INIT;
ret = mbedtls_pk_get_psa_attributes(&pk_ctx, PSA_KEY_USAGE_VERIFY_HASH, &attributes);
if (ret != 0) {
wpa_printf(MSG_ERROR, "Failed to export public key: -0x%04x", -ret);
wpa_printf(MSG_ERROR, "Failed to get PSA attributes: -0x%04x", -ret);
mbedtls_pk_free(&pk_ctx);
return NULL;
}
// Done with mbedtls temporary context
mbedtls_pk_free(&pk_ctx);
psa_key_type_t key_type = psa_get_key_type(&attributes);
size_t key_bits = psa_get_key_bits(&attributes);
psa_ecc_family_t ecc_family = PSA_KEY_TYPE_ECC_GET_FAMILY(key_type);
mbedtls_ecp_group_id grp_id = psa_to_group_id(ecc_family, key_bits);
if (grp_id == MBEDTLS_ECP_DP_NONE) {
wpa_printf(MSG_ERROR, "Unsupported curve: family=0x%x bits=%zu", ecc_family, key_bits);
psa_reset_key_attributes(&attributes);
mbedtls_pk_free(&pk_ctx);
return NULL;
}
// Create wrapper structure
crypto_ec_key_wrapper_t *wrapper = os_calloc(1, sizeof(crypto_ec_key_wrapper_t));
if (!wrapper) {
wpa_printf(MSG_ERROR, "Memory allocation failed for key wrapper");
psa_reset_key_attributes(&attributes);
mbedtls_pk_free(&pk_ctx);
return NULL;
}
wrapper->curve_id = grp_id; // Store curve ID
mbedtls_ecp_group_init(&wrapper->group); // Initialize group structure
wrapper->group.id = MBEDTLS_ECP_DP_NONE; // Mark as not loaded yet (lazy init)
wrapper->curve_id = grp_id;
mbedtls_ecp_group_init(&wrapper->group);
wrapper->group.id = MBEDTLS_ECP_DP_NONE;
psa_key_attributes_t attributes = PSA_KEY_ATTRIBUTES_INIT;
// Configure attributes for import
psa_set_key_usage_flags(&attributes,
PSA_KEY_USAGE_VERIFY_HASH | PSA_KEY_USAGE_VERIFY_MESSAGE | PSA_KEY_USAGE_EXPORT);
psa_set_key_algorithm(&attributes, PSA_ALG_ECDSA(PSA_ALG_SHA_256));
psa_set_key_type(&attributes, PSA_KEY_TYPE_ECC_PUBLIC_KEY(ecc_family));
psa_set_key_bits(&attributes, key_bits);
psa_status_t status = psa_import_key(&attributes, pub_key_buf, pub_key_len, &wrapper->key_id);
// Import directly from PK context into PSA
ret = mbedtls_pk_import_into_psa(&pk_ctx, &attributes, &wrapper->key_id);
psa_reset_key_attributes(&attributes);
mbedtls_pk_free(&pk_ctx);
if (status != PSA_SUCCESS) {
wpa_printf(MSG_ERROR, "Failed to import key to PSA: %d", status);
if (ret != 0) {
wpa_printf(MSG_ERROR, "Failed to import key to PSA: -0x%04x", -ret);
mbedtls_ecp_group_free(&wrapper->group);
os_free(wrapper);
return NULL;
}
#if CONFIG_MBEDTLS_HARDWARE_MPI && !CONFIG_MBEDTLS_HARDWARE_ECC
if (crypto_ec_key_cache_public_key_buf(wrapper, pub_key_buf, pub_key_len) < 0) {
if (crypto_ec_key_ensure_public_key_cached(wrapper) < 0) {
wpa_printf(MSG_DEBUG, "Failed to cache parsed SPKI public key");
}
#endif
@@ -3150,13 +3054,7 @@ struct crypto_ec_key *crypto_ec_key_parse_pub(const u8 *der, size_t der_len)
return NULL;
}
// Extract curve ID from parsed key
mbedtls_ecp_keypair *ec = (mbedtls_ecp_keypair *)(pkey->MBEDTLS_PRIVATE(pk_ctx));
mbedtls_ecp_group_id grp_id = MBEDTLS_ECP_DP_NONE;
if (ec) {
grp_id = ec->MBEDTLS_PRIVATE(grp).id;
}
// Extract curve info via PSA attributes instead of accessing pk_ctx internals
psa_key_attributes_t key_attributes = PSA_KEY_ATTRIBUTES_INIT;
ret = mbedtls_pk_get_psa_attributes(pkey, PSA_KEY_USAGE_VERIFY_HASH, &key_attributes);
if (ret != 0) {
@@ -3166,19 +3064,27 @@ struct crypto_ec_key *crypto_ec_key_parse_pub(const u8 *der, size_t der_len)
return NULL;
}
// Derive mbedtls group ID from PSA attributes
psa_key_type_t key_type = psa_get_key_type(&key_attributes);
size_t key_bits = psa_get_key_bits(&key_attributes);
mbedtls_ecp_group_id grp_id = psa_to_group_id(
PSA_KEY_TYPE_ECC_GET_FAMILY(key_type), key_bits);
// Create wrapper structure
crypto_ec_key_wrapper_t *wrapper = os_calloc(1, sizeof(crypto_ec_key_wrapper_t));
if (!wrapper) {
wpa_printf(MSG_ERROR, "Memory allocation failed for key wrapper");
psa_reset_key_attributes(&key_attributes);
mbedtls_pk_free(pkey);
os_free(pkey);
return NULL;
}
wrapper->curve_id = grp_id; // Store curve ID
wrapper->curve_id = grp_id;
mbedtls_ecp_group_init(&wrapper->group);
wrapper->group.id = MBEDTLS_ECP_DP_NONE; // Mark as not loaded yet (lazy init)
wrapper->group.id = MBEDTLS_ECP_DP_NONE;
ret = mbedtls_pk_import_into_psa(pkey, &key_attributes, &wrapper->key_id);
psa_reset_key_attributes(&key_attributes);
if (ret != 0) {
wpa_printf(MSG_ERROR, "mbedtls_pk_import_into_psa failed with %d", ret);
mbedtls_ecp_group_free(&wrapper->group);
@@ -3187,15 +3093,16 @@ struct crypto_ec_key *crypto_ec_key_parse_pub(const u8 *der, size_t der_len)
os_free(pkey);
return NULL;
}
#if CONFIG_MBEDTLS_HARDWARE_MPI && !CONFIG_MBEDTLS_HARDWARE_ECC
if (crypto_ec_key_cache_public_key_from_pk(wrapper, pkey) < 0) {
wpa_printf(MSG_DEBUG, "Failed to cache parsed public key");
}
#endif
psa_reset_key_attributes(&key_attributes);
mbedtls_pk_free(pkey);
os_free(pkey);
#if CONFIG_MBEDTLS_HARDWARE_MPI && !CONFIG_MBEDTLS_HARDWARE_ECC
if (crypto_ec_key_ensure_public_key_cached(wrapper) < 0) {
wpa_printf(MSG_DEBUG, "Failed to cache parsed public key");
}
#endif
return (struct crypto_ec_key *)wrapper;
}
components/wpa_supplicant/test_apps/main/test_dpp.c
+1 -1
View File
@@ -47,7 +47,7 @@ static u32 dpp_test_prod_limit_us(void)
#if !defined(CONFIG_MBEDTLS_HARDWARE_ECC) && !defined(CONFIG_MBEDTLS_HARDWARE_MPI)
return 0;
#elif CONFIG_IDF_TARGET_ESP32 || CONFIG_IDF_TARGET_ESP32S2 || CONFIG_IDF_TARGET_ESP32S3 || CONFIG_IDF_TARGET_ESP32C3
return 300000;
return 305000;
#elif SOC_ECC_SUPPORTED
return 100000;
#else