Disabling this config can reduce footprint for the cases where
mbedtls_strerror() is used and hence the debug strings are getting
pulled into the application image.
- Even if the config MBEDTLS_HARDWARE_AES is enabled, we now support fallback
to software implementation of GCM operations when non-AES ciphers are used.
- Add ECDSA peripheral chapter and instructions to program efuse key block
- Update security guide for ECDSA peripheral mention for device identity
- Link with ESP-TLS guide about using ECDSA peripheral in TLS connection
Add changes to use fast_pbkdf2 as default for PMK calculations.
fast_pbkdf2 is significantly faster than current implementations
for esp chips.
Also removes unnecessary code for pbkdf-sha256 and pbkdf-sha512.
Updates config to define the new MBEDTLS_SSL_CID_TLS1_3_PAD_GRANULARITY
option, which replaced the previously used
MBEDTLS_SSL_CID_PADDING_GRANULARITY. The old option is continuing to be
used as the new one exceeds the maximum length for an option name in
esp-idf.
See https://github.com/Mbed-TLS/mbedtls/pull/4490 for more information.
Signed-off-by: Daniel Mangum <georgedanielmangum@gmail.com>
- GCM operation in mbedtls used ECB, which calculated only 16 bytes of data each time.
- Therefore, when processing a large amount of data, it is necessary to frequently set hardware acceleration calculations,
- which could not make good use of the AES DMA function to improve efficiency.
- Hence, GCM implementation is replaced with CTR-based calculation which utilizes AES DMA to improve efficiency.
*MBEDTLS_ECDH_LEGACY_CONTEXT is now disabled by default.
*Fixed MBEDTLS_ECDH_LEGACY_CONTEXT issue for protocomm component.
*Removed all code under MBEDTLS_DEPRECATED_REMOVED
1) Fix build issue in mbedtls
2) skip the public headers check in IDF
3)Update Kconfig Macros
4)Remove deprecated config options
5) Update the sha API according to new nomenclature
6) Update mbedtls_rsa_init usage
7) Include mbedtls/build_info.h instead of mbedtls/config.h
8) Dont include check_config.h
9) Add additional error message in esp_blufi_api.h
In commit de22f3a4e5, combination of
hardware and software MPI (bignum) related approach was used to
work around chip (e.g. ESP32-C3) limitation of max 3072 bits support.
This was done using linker "--wrap" flag but since the relevant API is
being used in same translation (compilation unit), hardware mode was not
getting used in some cases (e.g., RSA key generation).
This commit modified internal mbedTLS API and makes software+hardware
combination deterministic.
Using these ciphers can constitute a security risk if the server
uses a weak prime for the key exchange.
Footprint impact:
Roughly 3K saved in text+rodata in default https_request example
This commit add following crypto changes
1. Update current crypto code with upstream supplicant code
2. Add a proper porting layer to use mbedtls APIs for all the crypto
operations used by supplicant.
Internal crypto will be used when USE_MBEDLTS flag is disabled
in supplicant's menuconfig.
This commit also removes the clutter in crypto files due to partial
porting of some APIs to mbedtls, all the code from those files have
been removed and rewritten in a generic way, this is inspired from
current upstream code.
This also reduces the lib size significantly, supplicant's lib
size reduces around ~567kb after this change(NB: lib size doesn't
indicate reduction in final bin size).
Removed the old dynamically allocated GDMA channel approach.
It proved too unreliable as we couldn't not ensure consumers of the mbedtls
would properly free the channels after use.
Replaced by a single shared GDMA channel for AES and SHA, which won't be
released unless user specifically calls API for releasing it.
Add configuration option to fallback to software implementation
for exponential mod incase of hardware is not supporting it
for larger MPI value.
Usecase:
ESP32C3 only supports till RSA3072 in hardware. This config option
will help to support 4k certificates for WPA enterprise connection.
