The test only runs with MBEDTLS_CONSTANT_TIME_PRIME_GEN disabled:
with the constant-time prime generation that is now the default,
RSA-2048 key generation takes over a minute on most targets (~86 s on
ESP32-S3), exceeding the test timeout and starving the task watchdog.
mbedtls 4.1.1 made the small-factor test in prime generation
constant-time (a CT GCD against the product of primes up to 997, run
for every prime candidate). This makes RSA key generation roughly ten
times slower on ESP chips and starves the idle task since the software
GCD never yields, tripping the task watchdog.
Add MBEDTLS_CONSTANT_TIME_PRIME_GEN under the new "Security hardening"
menu, default y so the upstream constant-time behavior ships as the
secure default. When disabled, esp_config.h defines
MBEDTLS_MPI_PRIME_SIEVE_VARIABLE_TIME and mbedtls uses the pre-3.6.7
variable-time trial division, restoring key generation performance on
devices where no untrusted co-resident code could time key generation.
Remove ~50 duplicate local definitions of ALIGN_UP/ALIGN_DOWN/ALIGN_UP_BY/
ALIGN_DOWN_BY across the codebase and replace them with canonical
ESP_ALIGN_UP/ESP_ALIGN_DOWN from esp_macros.h.
These tests enable features they do not use -- the VFS console, Wi-Fi task core pinning, and
the DS peripheral -- which shift memory layout, interrupt allocation, and peripheral access
enough to fail them. Override the unused options in each test's sdkconfig and ignore the
resulting unknown-symbol build warnings.
- esp_tls_mbedtls: require cert when PSA-backed server/client key is set
- esp_tls_mbedtls: drop redundant pk_init/x509_crt_init (calloc handles it)
- psa SE driver: copy callbacks/opaque_key by value (no lifetime coupling)
- psa SE driver: replace atomic CAS with simple null check on register
- psa SE driver: use sig_len from sign callback with bounds validation
- psa SE driver: validate pubkey_len returned by export_pubkey callback
- psa SE driver: check hash sub-alg in RSA PKCS1V15 branch of validate_request
- psa SE driver: align secure_element_register_callbacks doc with value-copy impl
- esp_https_server: initialize server_key in HTTPD_SSL_CONFIG_DEFAULT
- mbedtls: move SECURE_ELEMENT_DRIVER_ENABLED to esp_config.h for parity
with ESP_ECDSA_DRIVER_ENABLED; drop target_compile_definitions
- docs: fix esp_tls_cfg_t -> esp_http_client_config_t cross-reference
- docs: check psa_import_key() status in ESP-TLS PSA example
- hints/error_output: point at CONFIG_MBEDTLS_SECURE_ELEMENT_DRIVER_ENABLED
Add generic secure element PSA driver with runtime callback registration.
Consolidate Kconfig into single MBEDTLS_SECURE_ELEMENT_DRIVER_ENABLED option.
Closes https://github.com/espressif/esp-idf/issues/18388
esp_crypto_shared_gdma_done() polled the AXI RX raw interrupt status
(in_done) but never cleared it, so after the first transfer the set bit
made every subsequent call return immediately without waiting.
fix(mmap): fixed mmap read data wrong when flash being erased/written and cache not disabled
Closes IDFGH-14084
See merge request espressif/esp-idf!29804
Prevent signature verification failures on targets that do not round hardware words
to 16-word boundaries (e.g. ESP32-S3, ESP32-C6, and ESP32-P4), where exponent blinding
can cause `num_words` to vary between calls, leading to reuse of an incorrectly sized
cached `Rinv`.
Perform modulo reduction on the base before size checks to allow RSA-4096
CRT (2048-bit exponentiations) to use the hardware accelerator instead of
falling back to software. Fix input validation, negative zero sign issues,
and early memory cleanup paths in esp_mpi_exp_mod()
Before:
The cache won't be disabled when XIP on psram. But during flash
erasing/programming, read data will be courrupt.
When XIP in psram is enabled, the image is not mapped to the cache so
usually there will be no flash access. The only way to read from flash
is via the driver or use mmap. The driver has protection during erasing,
while th mmap region not.
Now:
Mmap APIs provide a flag to make mmap->unmap region mutually exclusive
to flash erase/programming when XIP from psram. SPI Flash write APIs
will benefit from this. When the flag is used, no concurrent access to
mapped region will happen while writing; otherwise the cache will be
disable to avoid data corruption.
Most ESP-IDF APIs calls mmap with this flag. As for users calling
mmap-like APIs directly, they can choose whether to enable this by a
flag.
Closes https://github.com/espressif/esp-idf/issues/14897
Audited every esp_* PSA driver against its corresponding software driver in
mbedtls/library (psa_crypto_cipher.c, psa_crypto_aead.c, psa_crypto_mac.c,
psa_crypto_hash.c, psa_crypto_ecp.c, psa_crypto_rsa.c) and fixed gaps in
workflow ownership, error-path cleanup, sensitive-data wiping, and BAD_STATE
gating per the PSA Crypto API spec.
esp_aes (cipher): fix padding oracle in cipher_finish by replacing leaky
branches with mbedtls_ct_* primitives; abort wipes the driver-level ctx,
not just the inner mbedtls_aes_context; setup routes errors through abort.
esp_aes_gcm (AEAD): zeroize the 16-byte full_tag scratch; restore the
*output_length = finish_output_size assignment that the SW reference keeps
for future ciphers; NULL the inner ctx pointer after free in abort; gate
update/finish on a live ctx with PSA_ERROR_BAD_STATE.
esp_ecdsa: keep abort-at-exit in the one-shot wrappers so the stack-copy
of the hash (needed for little-endian byte order on HW) is wiped per
PSA spec 6.3.3, drop the over-defensive public-key qx/qy wipes that the
SW driver does not perform.
esp_cmac / esp_hmac_transparent / esp_hmac_opaque (MAC): make abort
idempotent, route setup errors through abort, gate update/finish/
verify_finish on PSA_ERROR_BAD_STATE, wipe M_last and intermediate hmac[]
buffers on completion or HW failure. HMAC opaque gains alg + computed
fields to mirror the SW psa_crypto_mac.c state machine. HMAC transparent
explicitly aborts the inner SHA context before reusing it for the outer
hash.
esp_sha: switch the per-op live indicator to (sha_ctx != NULL) so the
public esp_sha_operation_type_t enum keeps its original ordinal values;
free + NULL sha_ctx on every error path; gate update/finish/clone on a
live ctx; wipe per-algorithm core/parallel-engine scratch buffers
(W[], A[], state) on HW-engine failure.
esp_md5: replace bare memset in abort with mbedtls_platform_zeroize.
esp_rsa_ds: complete() no longer frees sig_buffer (abort owns that);
start() routes failures through abort; asymmetric_decrypt funnels all
cleanup through a single exit: label. RSA-DS utilities wipe the
decrypted-plaintext scratch on v15 / OAEP unpad failure.
The "custom certificate bundle - weak hash" test relied on DigiCert
Global Root CA being present as a trust anchor in cacrt_all.pem (the
only SHA-1-self-signed root in the chain it loaded). The recent
cacrt_all.pem refresh moved that root to cacrt_deprecated.pem, so the
chain could no longer anchor and the test started failing.
