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https://github.com/espressif/esp-idf.git
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921a8a7e71
Fix the increase in build size of mbedtls while upgrading to v3.x (v5.3) See merge request espressif/esp-idf!34252
1197 lines
48 KiB
Plaintext
1197 lines
48 KiB
Plaintext
menu "mbedTLS"
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choice MBEDTLS_MEM_ALLOC_MODE
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prompt "Memory allocation strategy"
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default MBEDTLS_INTERNAL_MEM_ALLOC
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help
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Allocation strategy for mbedTLS, essentially provides ability to
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allocate all required dynamic allocations from,
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- Internal DRAM memory only
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- External SPIRAM memory only
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- Either internal or external memory based on default malloc()
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behavior in ESP-IDF
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- Custom allocation mode, by overwriting calloc()/free() using
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mbedtls_platform_set_calloc_free() function
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- Internal IRAM memory wherever applicable else internal DRAM
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Recommended mode here is always internal (*), since that is most preferred
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from security perspective. But if application requirement does not
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allow sufficient free internal memory then alternate mode can be
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selected.
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(*) In case of ESP32-S2/ESP32-S3, hardware allows encryption of external
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SPIRAM contents provided hardware flash encryption feature is enabled.
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In that case, using external SPIRAM allocation strategy is also safe choice
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from security perspective.
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config MBEDTLS_INTERNAL_MEM_ALLOC
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bool "Internal memory"
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config MBEDTLS_EXTERNAL_MEM_ALLOC
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bool "External SPIRAM"
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depends on SPIRAM_USE_CAPS_ALLOC || SPIRAM_USE_MALLOC
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config MBEDTLS_DEFAULT_MEM_ALLOC
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bool "Default alloc mode"
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config MBEDTLS_CUSTOM_MEM_ALLOC
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bool "Custom alloc mode"
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config MBEDTLS_IRAM_8BIT_MEM_ALLOC
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bool "Internal IRAM"
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depends on ESP32_IRAM_AS_8BIT_ACCESSIBLE_MEMORY
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help
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Allows to use IRAM memory region as 8bit accessible region.
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TLS input and output buffers will be allocated in IRAM section which is 32bit aligned
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memory. Every unaligned (8bit or 16bit) access will result in an exception
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and incur penalty of certain clock cycles per unaligned read/write.
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endchoice #MBEDTLS_MEM_ALLOC_MODE
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config MBEDTLS_SSL_MAX_CONTENT_LEN
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int "TLS maximum message content length"
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default 16384
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range 512 16384
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depends on !MBEDTLS_ASYMMETRIC_CONTENT_LEN
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help
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Maximum TLS message length (in bytes) supported by mbedTLS.
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16384 is the default and this value is required to comply
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fully with TLS standards.
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However you can set a lower value in order to save RAM. This
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is safe if the other end of the connection supports Maximum
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Fragment Length Negotiation Extension (max_fragment_length,
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see RFC6066) or you know for certain that it will never send a
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message longer than a certain number of bytes.
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If the value is set too low, symptoms are a failed TLS
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handshake or a return value of MBEDTLS_ERR_SSL_INVALID_RECORD
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(-0x7200).
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config MBEDTLS_ASYMMETRIC_CONTENT_LEN
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bool "Asymmetric in/out fragment length"
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default y
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help
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If enabled, this option allows customizing TLS in/out fragment length
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in asymmetric way. Please note that enabling this with default values
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saves 12KB of dynamic memory per TLS connection.
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config MBEDTLS_SSL_IN_CONTENT_LEN
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int "TLS maximum incoming fragment length"
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default 16384
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range 512 16384
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depends on MBEDTLS_ASYMMETRIC_CONTENT_LEN
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help
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This defines maximum incoming fragment length, overriding default
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maximum content length (MBEDTLS_SSL_MAX_CONTENT_LEN).
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config MBEDTLS_SSL_OUT_CONTENT_LEN
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int "TLS maximum outgoing fragment length"
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default 4096
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range 512 16384
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depends on MBEDTLS_ASYMMETRIC_CONTENT_LEN
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help
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This defines maximum outgoing fragment length, overriding default
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maximum content length (MBEDTLS_SSL_MAX_CONTENT_LEN).
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config MBEDTLS_DYNAMIC_BUFFER
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bool "Using dynamic TX/RX buffer"
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default n
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select MBEDTLS_ASYMMETRIC_CONTENT_LEN
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# Dynamic buffer feature is not supported with DTLS
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depends on !IDF_TARGET_LINUX && !MBEDTLS_SSL_PROTO_DTLS && !MBEDTLS_SSL_VARIABLE_BUFFER_LENGTH
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help
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Using dynamic TX/RX buffer. After enabling this option, mbedTLS will
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allocate TX buffer when need to send data and then free it if all data
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is sent, allocate RX buffer when need to receive data and then free it
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when all data is used or read by upper layer.
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By default, when SSL is initialized, mbedTLS also allocate TX and
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RX buffer with the default value of "MBEDTLS_SSL_OUT_CONTENT_LEN" or
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"MBEDTLS_SSL_IN_CONTENT_LEN", so to save more heap, users can set
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the options to be an appropriate value.
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config MBEDTLS_DYNAMIC_FREE_CONFIG_DATA
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bool "Free private key and DHM data after its usage"
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default n
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depends on MBEDTLS_DYNAMIC_BUFFER
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help
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Free private key and DHM data after its usage in handshake process.
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The option will decrease heap cost when handshake, but also lead to problem:
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Because all certificate, private key and DHM data are freed so users should register
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certificate and private key to ssl config object again.
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config MBEDTLS_DYNAMIC_FREE_CA_CERT
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bool "Free SSL CA certificate after its usage"
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default y
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depends on MBEDTLS_DYNAMIC_FREE_CONFIG_DATA
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help
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Free CA certificate after its usage in the handshake process.
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This option will decrease the heap footprint for the TLS handshake, but may lead to a problem:
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If the respective ssl object needs to perform the TLS handshake again,
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the CA certificate should once again be registered to the ssl object.
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config MBEDTLS_DEBUG
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bool "Enable mbedTLS debugging"
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default n
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help
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Enable mbedTLS debugging functions at compile time.
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If this option is enabled, you can include
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"mbedtls/esp_debug.h" and call mbedtls_esp_enable_debug_log()
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at runtime in order to enable mbedTLS debug output via the ESP
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log mechanism.
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choice MBEDTLS_DEBUG_LEVEL
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bool "Set mbedTLS debugging level"
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depends on MBEDTLS_DEBUG
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default MBEDTLS_DEBUG_LEVEL_VERBOSE
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help
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Set mbedTLS debugging level
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config MBEDTLS_DEBUG_LEVEL_WARN
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bool "Warning"
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config MBEDTLS_DEBUG_LEVEL_INFO
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bool "Info"
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config MBEDTLS_DEBUG_LEVEL_DEBUG
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bool "Debug"
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config MBEDTLS_DEBUG_LEVEL_VERBOSE
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bool "Verbose"
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endchoice
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config MBEDTLS_DEBUG_LEVEL
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int
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default 1 if MBEDTLS_DEBUG_LEVEL_WARN
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default 2 if MBEDTLS_DEBUG_LEVEL_INFO
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default 3 if MBEDTLS_DEBUG_LEVEL_DEBUG
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default 4 if MBEDTLS_DEBUG_LEVEL_VERBOSE
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menu "mbedTLS v3.x related"
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# NOTE: MBEDTLS_DYNAMIC_BUFFER feature is not supported with TLS 1.3 yet. Ref: IDF-4762
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config MBEDTLS_SSL_PROTO_TLS1_3
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bool "Support TLS 1.3 protocol"
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depends on MBEDTLS_TLS_ENABLED && MBEDTLS_SSL_KEEP_PEER_CERTIFICATE && !MBEDTLS_DYNAMIC_BUFFER
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select MBEDTLS_HKDF_C
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default n
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menu "TLS 1.3 related configurations"
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depends on MBEDTLS_SSL_PROTO_TLS1_3
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config MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
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bool "TLS 1.3 middlebox compatibility mode"
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default y
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config MBEDTLS_SSL_TLS1_3_KEXM_PSK
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bool "TLS 1.3 PSK key exchange mode"
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default y
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config MBEDTLS_SSL_TLS1_3_KEXM_EPHEMERAL
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bool "TLS 1.3 ephemeral key exchange mode"
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default y
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config MBEDTLS_SSL_TLS1_3_KEXM_PSK_EPHEMERAL
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bool "TLS 1.3 PSK ephemeral key exchange mode"
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default y
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endmenu
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config MBEDTLS_SSL_VARIABLE_BUFFER_LENGTH
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bool "Variable SSL buffer length"
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default n
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help
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This enables the SSL buffer to be resized automatically
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based on the negotiated maximum fragment length in each direction.
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config MBEDTLS_ECDH_LEGACY_CONTEXT
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bool "Use a backward compatible ECDH context (Experimental)"
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default n
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depends on MBEDTLS_ECDH_C && MBEDTLS_ECP_RESTARTABLE
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help
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Use the legacy ECDH context format.
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Define this option only if you enable MBEDTLS_ECP_RESTARTABLE or if you
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want to access ECDH context fields directly.
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config MBEDTLS_X509_TRUSTED_CERT_CALLBACK
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bool "Enable trusted certificate callbacks"
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default n
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help
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Enables users to configure the set of trusted certificates
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through a callback instead of a linked list.
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See mbedTLS documentation for required API and more details.
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config MBEDTLS_SSL_CONTEXT_SERIALIZATION
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bool "Enable serialization of the TLS context structures"
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default n
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depends on MBEDTLS_GCM_C || MBEDTLS_CCM_C || MBEDTLS_CHACHAPOLY_C
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help
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Enable serialization of the TLS context structures
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This is a local optimization in handling a single, potentially long-lived connection.
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See mbedTLS documentation for required API and more details.
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Disabling this option will save some code size.
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config MBEDTLS_SSL_KEEP_PEER_CERTIFICATE
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bool "Keep peer certificate after handshake completion"
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default y
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help
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Keep the peer's certificate after completion of the handshake.
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Disabling this option will save about 4kB of heap and some code size.
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See mbedTLS documentation for required API and more details.
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config MBEDTLS_PKCS7_C
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bool "Enable PKCS #7"
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default y
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depends on MBEDTLS_X509_CRL_PARSE_C
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help
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Enable PKCS #7 core for using PKCS #7-formatted signatures.
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config MBEDTLS_SSL_CID_PADDING_GRANULARITY
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int "Record plaintext padding"
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default 16
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range 0 32
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depends on MBEDTLS_SSL_PROTO_TLS1_3 || MBEDTLS_SSL_DTLS_CONNECTION_ID
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help
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Controls the use of record plaintext padding in TLS 1.3 and
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when using the Connection ID extension in DTLS 1.2.
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The padding will always be chosen so that the length of the
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padded plaintext is a multiple of the value of this option.
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Notes:
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A value of 1 means that no padding will be used for outgoing records.
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On systems lacking division instructions, a power of two should be preferred.
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menu "DTLS-based configurations"
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depends on MBEDTLS_SSL_PROTO_DTLS
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config MBEDTLS_SSL_DTLS_CONNECTION_ID
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bool "Support for the DTLS Connection ID extension"
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default n
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help
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Enable support for the DTLS Connection ID extension which allows to
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identify DTLS connections across changes in the underlying transport.
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config MBEDTLS_SSL_CID_IN_LEN_MAX
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int "Maximum length of CIDs used for incoming DTLS messages"
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default 32
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range 0 32
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depends on MBEDTLS_SSL_DTLS_CONNECTION_ID
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help
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Maximum length of CIDs used for incoming DTLS messages
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config MBEDTLS_SSL_CID_OUT_LEN_MAX
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int "Maximum length of CIDs used for outgoing DTLS messages"
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default 32
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range 0 32
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depends on MBEDTLS_SSL_DTLS_CONNECTION_ID
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help
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Maximum length of CIDs used for outgoing DTLS messages
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config MBEDTLS_SSL_DTLS_SRTP
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bool "Enable support for negotiation of DTLS-SRTP (RFC 5764)"
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default n
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help
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Enable support for negotiation of DTLS-SRTP (RFC 5764) through the use_srtp extension.
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See mbedTLS documentation for required API and more details.
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Disabling this option will save some code size.
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endmenu
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endmenu
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menu "Certificate Bundle"
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config MBEDTLS_CERTIFICATE_BUNDLE
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bool "Enable trusted root certificate bundle"
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default y
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help
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Enable support for large number of default root certificates
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When enabled this option allows user to store default as well
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as customer specific root certificates in compressed format rather
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than storing full certificate. For the root certificates the public key and the subject name
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will be stored.
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choice MBEDTLS_DEFAULT_CERTIFICATE_BUNDLE
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bool "Default certificate bundle options"
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depends on MBEDTLS_CERTIFICATE_BUNDLE
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default MBEDTLS_CERTIFICATE_BUNDLE_DEFAULT_FULL
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config MBEDTLS_CERTIFICATE_BUNDLE_DEFAULT_FULL
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bool "Use the full default certificate bundle"
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config MBEDTLS_CERTIFICATE_BUNDLE_DEFAULT_CMN
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bool "Use only the most common certificates from the default bundles"
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help
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Use only the most common certificates from the default bundles, reducing the size with 50%,
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while still having around 99% coverage.
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config MBEDTLS_CERTIFICATE_BUNDLE_DEFAULT_NONE
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bool "Do not use the default certificate bundle"
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endchoice
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config MBEDTLS_CUSTOM_CERTIFICATE_BUNDLE
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depends on MBEDTLS_CERTIFICATE_BUNDLE
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default n
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bool "Add custom certificates to the default bundle"
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config MBEDTLS_CUSTOM_CERTIFICATE_BUNDLE_PATH
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depends on MBEDTLS_CUSTOM_CERTIFICATE_BUNDLE
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string "Custom certificate bundle path"
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help
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Name of the custom certificate directory or file. This path is evaluated
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relative to the project root directory.
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config MBEDTLS_CERTIFICATE_BUNDLE_DEPRECATED_LIST
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bool "Add deprecated root certificates"
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depends on MBEDTLS_CERTIFICATE_BUNDLE && !MBEDTLS_CERTIFICATE_BUNDLE_DEFAULT_NONE
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help
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Include the deprecated list of root certificates in the bundle.
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This list gets updated when a certificate is removed from the Mozilla's
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NSS root certificate store. This config can be enabled if you would like
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to ensure that none of the certificates that were deployed in the product
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are affected because of the update to bundle. In turn, enabling this
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config keeps expired, retracted certificates in the bundle and it may
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pose a security risk.
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- Deprecated cert list may grow based based on sync with upstream bundle
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- Deprecated certs would be be removed in ESP-IDF (next) major release
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config MBEDTLS_CERTIFICATE_BUNDLE_MAX_CERTS
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int "Maximum no of certificates allowed in certificate bundle"
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default 200
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depends on MBEDTLS_CERTIFICATE_BUNDLE
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endmenu
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config MBEDTLS_ECP_RESTARTABLE
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bool "Enable mbedTLS ecp restartable"
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select MBEDTLS_ECDH_LEGACY_CONTEXT
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depends on MBEDTLS_ECP_C
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default n
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help
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Enable "non-blocking" ECC operations that can return early and be resumed.
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config MBEDTLS_CMAC_C
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bool "Enable CMAC mode for block ciphers"
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default n
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depends on MBEDTLS_AES_C || MBEDTLS_DES_C
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help
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Enable the CMAC (Cipher-based Message Authentication Code) mode for
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block ciphers.
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config MBEDTLS_HARDWARE_AES
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bool "Enable hardware AES acceleration"
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default y
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depends on !SPIRAM_CACHE_WORKAROUND_STRATEGY_DUPLDST && SOC_AES_SUPPORTED
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help
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Enable hardware accelerated AES encryption & decryption.
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Note that if the ESP32 CPU is running at 240MHz, hardware AES does not
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offer any speed boost over software AES.
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config MBEDTLS_AES_USE_INTERRUPT
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bool "Use interrupt for long AES operations"
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depends on !IDF_TARGET_ESP32 && MBEDTLS_HARDWARE_AES
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default y
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help
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Use an interrupt to coordinate long AES operations.
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This allows other code to run on the CPU while an AES operation is pending.
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Otherwise the CPU busy-waits.
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config MBEDTLS_AES_INTERRUPT_LEVEL
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int "AES hardware interrupt level"
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default 0
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depends on MBEDTLS_AES_USE_INTERRUPT
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range 0 3
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help
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This config helps to set the interrupt priority level for the AES peripheral.
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Value 0 (default) means that there is no preference regarding the interrupt
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priority level and any level from 1 to 3 can be selected (based on the availability).
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Note: Higher value indicates high interrupt priority.
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config MBEDTLS_HARDWARE_GCM
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bool "Enable partially hardware accelerated GCM"
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depends on SOC_AES_SUPPORT_GCM && MBEDTLS_HARDWARE_AES
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default y
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help
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Enable partially hardware accelerated GCM. GHASH calculation is still done
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in software.
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If MBEDTLS_HARDWARE_GCM is disabled and MBEDTLS_HARDWARE_AES is enabled then
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mbedTLS will still use the hardware accelerated AES block operation, but
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on a single block at a time.
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config MBEDTLS_GCM_SUPPORT_NON_AES_CIPHER
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bool "Enable support for non-AES ciphers in GCM operation"
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depends on MBEDTLS_HARDWARE_AES
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default y
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help
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Enable this config to support fallback to software definitions for a non-AES
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cipher GCM operation as we support hardware acceleration only for AES cipher.
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Some of the non-AES ciphers used in a GCM operation are DES, ARIA, CAMELLIA,
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CHACHA20, BLOWFISH.
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If this config is disabled, performing a non-AES cipher GCM operation with
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the config MBEDTLS_HARDWARE_AES enabled will result in calculation of an
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AES-GCM operation instead for the given input values and thus could lead
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to failure in certificate validation which would ultimately lead to a SSL
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handshake failure.
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This config being by-default enabled leads to an increase in binary size
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footprint of ~2.5KB.
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In case you are sure that your use case (for example, client and server
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configurations in case of a TLS handshake) would not involve any GCM
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operations using a non-AES cipher, you can safely disable this config,
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leading to reduction in binary size footprint.
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config MBEDTLS_HARDWARE_MPI
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bool "Enable hardware MPI (bignum) acceleration"
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default y
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depends on !SPIRAM_CACHE_WORKAROUND_STRATEGY_DUPLDST && SOC_MPI_SUPPORTED
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help
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Enable hardware accelerated multiple precision integer operations.
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Hardware accelerated multiplication, modulo multiplication,
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and modular exponentiation for up to SOC_RSA_MAX_BIT_LEN bit results.
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These operations are used by RSA.
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config MBEDTLS_LARGE_KEY_SOFTWARE_MPI
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bool "Fallback to software implementation for larger MPI values"
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depends on MBEDTLS_HARDWARE_MPI
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default y if SOC_RSA_MAX_BIT_LEN <= 3072 # HW max 3072 bits
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default n
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help
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Fallback to software implementation for RSA key lengths
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larger than SOC_RSA_MAX_BIT_LEN. If this is not active
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then the ESP will be unable to process keys greater
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than SOC_RSA_MAX_BIT_LEN.
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config MBEDTLS_MPI_USE_INTERRUPT
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bool "Use interrupt for MPI exp-mod operations"
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depends on !IDF_TARGET_ESP32 && MBEDTLS_HARDWARE_MPI
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default y
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help
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Use an interrupt to coordinate long MPI operations.
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This allows other code to run on the CPU while an MPI operation is pending.
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Otherwise the CPU busy-waits.
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config MBEDTLS_MPI_INTERRUPT_LEVEL
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int "MPI hardware interrupt level"
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default 0
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depends on MBEDTLS_MPI_USE_INTERRUPT
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range 0 3
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help
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This config helps to set the interrupt priority level for the MPI peripheral.
|
|
Value 0 (default) means that there is no preference regarding the interrupt
|
|
priority level and any level from 1 to 3 can be selected (based on the availability).
|
|
Note: Higher value indicates high interrupt priority.
|
|
|
|
config MBEDTLS_HARDWARE_SHA
|
|
bool "Enable hardware SHA acceleration"
|
|
default y
|
|
depends on !SPIRAM_CACHE_WORKAROUND_STRATEGY_DUPLDST && SOC_SHA_SUPPORTED
|
|
help
|
|
Enable hardware accelerated SHA1, SHA256, SHA384 & SHA512 in mbedTLS.
|
|
|
|
Due to a hardware limitation, on the ESP32 hardware acceleration is only
|
|
guaranteed if SHA digests are calculated one at a time. If more
|
|
than one SHA digest is calculated at the same time, one will
|
|
be calculated fully in hardware and the rest will be calculated
|
|
(at least partially calculated) in software. This happens automatically.
|
|
|
|
SHA hardware acceleration is faster than software in some situations but
|
|
slower in others. You should benchmark to find the best setting for you.
|
|
|
|
config MBEDTLS_HARDWARE_ECC
|
|
bool "Enable hardware ECC acceleration"
|
|
default y
|
|
depends on SOC_ECC_SUPPORTED
|
|
help
|
|
Enable hardware accelerated ECC point multiplication and point verification for points
|
|
on curve SECP192R1 and SECP256R1 in mbedTLS
|
|
|
|
config MBEDTLS_ECC_OTHER_CURVES_SOFT_FALLBACK
|
|
bool "Fallback to software implementation for curves not supported in hardware"
|
|
depends on MBEDTLS_HARDWARE_ECC
|
|
default y
|
|
help
|
|
Fallback to software implementation of ECC point multiplication and point verification
|
|
for curves not supported in hardware.
|
|
|
|
config MBEDTLS_ROM_MD5
|
|
bool "Use MD5 implementation in ROM"
|
|
default y
|
|
help
|
|
Use ROM MD5 in mbedTLS.
|
|
|
|
config MBEDTLS_HARDWARE_ECDSA_SIGN
|
|
bool "Enable ECDSA signing using on-chip ECDSA peripheral"
|
|
default n
|
|
depends on SOC_ECDSA_SUPPORTED
|
|
help
|
|
Enable hardware accelerated ECDSA peripheral to sign data
|
|
on curve SECP192R1 and SECP256R1 in mbedTLS.
|
|
|
|
Note that for signing, the private key has to be burnt in an efuse key block
|
|
with key purpose set to ECDSA_KEY.
|
|
If no key is burnt, it will report an error
|
|
|
|
The key should be burnt in little endian format. espefuse.py utility handles it internally
|
|
but care needs to be taken while burning using esp_efuse APIs
|
|
|
|
menu "Enable Software Countermeasure for ECDSA signing using on-chip ECDSA peripheral"
|
|
depends on MBEDTLS_HARDWARE_ECDSA_SIGN
|
|
depends on IDF_TARGET_ESP32H2
|
|
config MBEDTLS_HARDWARE_ECDSA_SIGN_MASKING_CM
|
|
bool "Mask original ECDSA sign operation under dummy sign operations"
|
|
select HAL_ECDSA_GEN_SIG_CM
|
|
# ToDo: IDF-11051
|
|
default y
|
|
help
|
|
The ECDSA peripheral before ECO5 does not offer constant time ECDSA sign operation.
|
|
This time can be observed through power profiling of the device,
|
|
making the ECDSA private key vulnerable to side-channel timing attacks.
|
|
This countermeasure masks the real ECDSA sign operation
|
|
under dummy sign operations to add randomness in the generated power signature.
|
|
It is highly recommended to also enable Secure Boot for the device in addition to this countermeasure
|
|
so that only trusted software can execute on the device.
|
|
|
|
config MBEDTLS_HARDWARE_ECDSA_SIGN_CONSTANT_TIME_CM
|
|
bool "Make ECDSA signature operation pseudo constant time for software"
|
|
default y
|
|
help
|
|
This option adds a delay after the actual ECDSA signature operation
|
|
so that the entire operation appears to be constant time for the software.
|
|
This fix helps in protecting the device only in case of remote timing attack on the ECDSA private key.
|
|
For e.g., When an interface is exposed by the device to perform ECDSA signature
|
|
of an arbitrary message.
|
|
The signature time would appear to be constant to the external entity after enabling
|
|
this option.
|
|
|
|
endmenu
|
|
|
|
config MBEDTLS_HARDWARE_ECDSA_VERIFY
|
|
bool "Enable ECDSA signature verification using on-chip ECDSA peripheral"
|
|
default y
|
|
depends on SOC_ECDSA_SUPPORTED
|
|
help
|
|
Enable hardware accelerated ECDSA peripheral to verify signature
|
|
on curve SECP192R1 and SECP256R1 in mbedTLS.
|
|
|
|
config MBEDTLS_ATCA_HW_ECDSA_SIGN
|
|
bool "Enable hardware ECDSA sign acceleration when using ATECC608A"
|
|
default n
|
|
help
|
|
This option enables hardware acceleration for ECDSA sign function, only
|
|
when using ATECC608A cryptoauth chip.
|
|
|
|
config MBEDTLS_ATCA_HW_ECDSA_VERIFY
|
|
bool "Enable hardware ECDSA verify acceleration when using ATECC608A"
|
|
default n
|
|
help
|
|
This option enables hardware acceleration for ECDSA sign function, only
|
|
when using ATECC608A cryptoauth chip.
|
|
|
|
config MBEDTLS_HAVE_TIME
|
|
bool "Enable mbedtls time support"
|
|
depends on !ESP_TIME_FUNCS_USE_NONE
|
|
default y
|
|
help
|
|
Enable use of time.h functions (time() and gmtime()) by mbedTLS.
|
|
|
|
This option doesn't require the system time to be correct, but enables
|
|
functionality that requires relative timekeeping - for example periodic
|
|
expiry of TLS session tickets or session cache entries.
|
|
|
|
Disabling this option will save some firmware size, particularly if
|
|
the rest of the firmware doesn't call any standard timekeeeping
|
|
functions.
|
|
|
|
config MBEDTLS_PLATFORM_TIME_ALT
|
|
bool "Enable mbedtls time support: platform-specific"
|
|
depends on MBEDTLS_HAVE_TIME
|
|
default n
|
|
help
|
|
Enabling this config will provide users with a function
|
|
"mbedtls_platform_set_time()" that allows to set an alternative
|
|
time function pointer.
|
|
|
|
config MBEDTLS_HAVE_TIME_DATE
|
|
bool "Enable mbedtls certificate expiry check"
|
|
depends on MBEDTLS_HAVE_TIME
|
|
default n
|
|
help
|
|
Enables X.509 certificate expiry checks in mbedTLS.
|
|
|
|
If this option is disabled (default) then X.509 certificate
|
|
"valid from" and "valid to" timestamp fields are ignored.
|
|
|
|
If this option is enabled, these fields are compared with the
|
|
current system date and time. The time is retrieved using the
|
|
standard time() and gmtime() functions. If the certificate is not
|
|
valid for the current system time then verification will fail with
|
|
code MBEDTLS_X509_BADCERT_FUTURE or MBEDTLS_X509_BADCERT_EXPIRED.
|
|
|
|
Enabling this option requires adding functionality in the firmware
|
|
to set the system clock to a valid timestamp before using TLS. The
|
|
recommended way to do this is via ESP-IDF's SNTP functionality, but
|
|
any method can be used.
|
|
|
|
In the case where only a small number of certificates are trusted by
|
|
the device, please carefully consider the tradeoffs of enabling this
|
|
option. There may be undesired consequences, for example if all
|
|
trusted certificates expire while the device is offline and a TLS
|
|
connection is required to update. Or if an issue with the SNTP
|
|
server means that the system time is invalid for an extended period
|
|
after a reset.
|
|
|
|
config MBEDTLS_ECDSA_DETERMINISTIC
|
|
bool "Enable deterministic ECDSA"
|
|
default y
|
|
help
|
|
Standard ECDSA is "fragile" in the sense that lack of entropy when signing
|
|
may result in a compromise of the long-term signing key.
|
|
|
|
config MBEDTLS_SHA512_C
|
|
bool "Enable the SHA-384 and SHA-512 cryptographic hash algorithms"
|
|
default y
|
|
help
|
|
Enable MBEDTLS_SHA512_C adds support for SHA-384 and SHA-512.
|
|
|
|
config MBEDTLS_SHA3_C
|
|
bool "Enable the SHA3 cryptographic hash algorithm"
|
|
default n
|
|
help
|
|
Enabling MBEDTLS_SHA3_C adds support for SHA3.
|
|
Enabling this configuration option increases the flash footprint
|
|
by almost 4KB.
|
|
|
|
choice MBEDTLS_TLS_MODE
|
|
bool "TLS Protocol Role"
|
|
default MBEDTLS_TLS_SERVER_AND_CLIENT
|
|
help
|
|
mbedTLS can be compiled with protocol support for the TLS
|
|
server, TLS client, or both server and client.
|
|
|
|
Reducing the number of TLS roles supported saves code size.
|
|
|
|
config MBEDTLS_TLS_SERVER_AND_CLIENT
|
|
bool "Server & Client"
|
|
select MBEDTLS_TLS_SERVER
|
|
select MBEDTLS_TLS_CLIENT
|
|
config MBEDTLS_TLS_SERVER_ONLY
|
|
bool "Server"
|
|
select MBEDTLS_TLS_SERVER
|
|
config MBEDTLS_TLS_CLIENT_ONLY
|
|
bool "Client"
|
|
select MBEDTLS_TLS_CLIENT
|
|
config MBEDTLS_TLS_DISABLED
|
|
bool "None"
|
|
|
|
endchoice
|
|
|
|
config MBEDTLS_TLS_SERVER
|
|
bool
|
|
select MBEDTLS_TLS_ENABLED
|
|
config MBEDTLS_TLS_CLIENT
|
|
bool
|
|
select MBEDTLS_TLS_ENABLED
|
|
config MBEDTLS_TLS_ENABLED
|
|
bool
|
|
|
|
menu "TLS Key Exchange Methods"
|
|
depends on MBEDTLS_TLS_ENABLED
|
|
|
|
config MBEDTLS_PSK_MODES
|
|
bool "Enable pre-shared-key ciphersuites"
|
|
default n
|
|
help
|
|
Enable to show configuration for different types of pre-shared-key TLS authentatication methods.
|
|
|
|
Leaving this options disabled will save code size if they are not used.
|
|
|
|
config MBEDTLS_KEY_EXCHANGE_PSK
|
|
bool "Enable PSK based ciphersuite modes"
|
|
depends on MBEDTLS_PSK_MODES
|
|
default n
|
|
help
|
|
Enable to support symmetric key PSK (pre-shared-key) TLS key exchange modes.
|
|
|
|
config MBEDTLS_KEY_EXCHANGE_DHE_PSK
|
|
bool "Enable DHE-PSK based ciphersuite modes"
|
|
depends on MBEDTLS_PSK_MODES && MBEDTLS_DHM_C
|
|
default y
|
|
help
|
|
Enable to support Diffie-Hellman PSK (pre-shared-key) TLS authentication modes.
|
|
|
|
config MBEDTLS_KEY_EXCHANGE_ECDHE_PSK
|
|
bool "Enable ECDHE-PSK based ciphersuite modes"
|
|
depends on MBEDTLS_PSK_MODES && MBEDTLS_ECDH_C
|
|
default y
|
|
help
|
|
Enable to support Elliptic-Curve-Diffie-Hellman PSK (pre-shared-key) TLS authentication modes.
|
|
|
|
config MBEDTLS_KEY_EXCHANGE_RSA_PSK
|
|
bool "Enable RSA-PSK based ciphersuite modes"
|
|
depends on MBEDTLS_PSK_MODES
|
|
default y
|
|
help
|
|
Enable to support RSA PSK (pre-shared-key) TLS authentication modes.
|
|
|
|
config MBEDTLS_KEY_EXCHANGE_RSA
|
|
bool "Enable RSA-only based ciphersuite modes"
|
|
default y
|
|
help
|
|
Enable to support ciphersuites with prefix TLS-RSA-WITH-
|
|
|
|
config MBEDTLS_KEY_EXCHANGE_DHE_RSA
|
|
bool "Enable DHE-RSA based ciphersuite modes"
|
|
default y
|
|
depends on MBEDTLS_DHM_C
|
|
help
|
|
Enable to support ciphersuites with prefix TLS-DHE-RSA-WITH-
|
|
|
|
config MBEDTLS_KEY_EXCHANGE_ELLIPTIC_CURVE
|
|
bool "Support Elliptic Curve based ciphersuites"
|
|
depends on MBEDTLS_ECP_C
|
|
default y
|
|
help
|
|
Enable to show Elliptic Curve based ciphersuite mode options.
|
|
|
|
Disabling all Elliptic Curve ciphersuites saves code size and
|
|
can give slightly faster TLS handshakes, provided the server supports
|
|
RSA-only ciphersuite modes.
|
|
|
|
config MBEDTLS_KEY_EXCHANGE_ECDHE_RSA
|
|
bool "Enable ECDHE-RSA based ciphersuite modes"
|
|
depends on MBEDTLS_KEY_EXCHANGE_ELLIPTIC_CURVE && MBEDTLS_ECDH_C
|
|
default y
|
|
help
|
|
Enable to support ciphersuites with prefix TLS-ECDHE-RSA-WITH-
|
|
|
|
config MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA
|
|
bool "Enable ECDHE-ECDSA based ciphersuite modes"
|
|
depends on MBEDTLS_KEY_EXCHANGE_ELLIPTIC_CURVE && MBEDTLS_ECDH_C && MBEDTLS_ECDSA_C
|
|
default y
|
|
help
|
|
Enable to support ciphersuites with prefix TLS-ECDHE-RSA-WITH-
|
|
|
|
config MBEDTLS_KEY_EXCHANGE_ECDH_ECDSA
|
|
bool "Enable ECDH-ECDSA based ciphersuite modes"
|
|
depends on MBEDTLS_KEY_EXCHANGE_ELLIPTIC_CURVE && MBEDTLS_ECDH_C && MBEDTLS_ECDSA_C
|
|
default y
|
|
help
|
|
Enable to support ciphersuites with prefix TLS-ECDHE-RSA-WITH-
|
|
|
|
config MBEDTLS_KEY_EXCHANGE_ECDH_RSA
|
|
bool "Enable ECDH-RSA based ciphersuite modes"
|
|
depends on MBEDTLS_KEY_EXCHANGE_ELLIPTIC_CURVE && MBEDTLS_ECDH_C
|
|
default y
|
|
help
|
|
Enable to support ciphersuites with prefix TLS-ECDHE-RSA-WITH-
|
|
|
|
config MBEDTLS_KEY_EXCHANGE_ECJPAKE
|
|
bool "Enable ECJPAKE based ciphersuite modes"
|
|
depends on MBEDTLS_ECJPAKE_C && MBEDTLS_ECP_DP_SECP256R1_ENABLED
|
|
default n
|
|
help
|
|
Enable to support ciphersuites with prefix TLS-ECJPAKE-WITH-
|
|
|
|
endmenu # TLS key exchange modes
|
|
|
|
config MBEDTLS_SSL_RENEGOTIATION
|
|
bool "Support TLS renegotiation"
|
|
depends on MBEDTLS_TLS_ENABLED
|
|
default y
|
|
help
|
|
The two main uses of renegotiation are (1) refresh keys on long-lived
|
|
connections and (2) client authentication after the initial handshake.
|
|
If you don't need renegotiation, disabling it will save code size and
|
|
reduce the possibility of abuse/vulnerability.
|
|
|
|
config MBEDTLS_SSL_PROTO_TLS1_2
|
|
bool "Support TLS 1.2 protocol"
|
|
depends on MBEDTLS_TLS_ENABLED
|
|
default y
|
|
|
|
config MBEDTLS_SSL_PROTO_GMTSSL1_1
|
|
bool "Support GM/T SSL 1.1 protocol"
|
|
depends on MBEDTLS_TLS_ENABLED
|
|
default n
|
|
help
|
|
Provisions for GM/T SSL 1.1 support
|
|
|
|
config MBEDTLS_SSL_PROTO_DTLS
|
|
bool "Support DTLS protocol (all versions)"
|
|
default n
|
|
depends on MBEDTLS_SSL_PROTO_TLS1_2
|
|
help
|
|
Requires TLS 1.2 to be enabled for DTLS 1.2
|
|
|
|
config MBEDTLS_SSL_ALPN
|
|
bool "Support ALPN (Application Layer Protocol Negotiation)"
|
|
depends on MBEDTLS_TLS_ENABLED
|
|
default y
|
|
help
|
|
Disabling this option will save some code size if it is not needed.
|
|
|
|
config MBEDTLS_CLIENT_SSL_SESSION_TICKETS
|
|
bool "TLS: Client Support for RFC 5077 SSL session tickets"
|
|
default y
|
|
depends on MBEDTLS_TLS_ENABLED
|
|
help
|
|
Client support for RFC 5077 session tickets. See mbedTLS documentation for more details.
|
|
Disabling this option will save some code size.
|
|
|
|
config MBEDTLS_SERVER_SSL_SESSION_TICKETS
|
|
bool "TLS: Server Support for RFC 5077 SSL session tickets"
|
|
default y
|
|
depends on MBEDTLS_TLS_ENABLED && (MBEDTLS_GCM_C || MBEDTLS_CCM_C || MBEDTLS_CHACHAPOLY_C)
|
|
help
|
|
Server support for RFC 5077 session tickets. See mbedTLS documentation for more details.
|
|
Disabling this option will save some code size.
|
|
|
|
menu "Symmetric Ciphers"
|
|
|
|
config MBEDTLS_AES_C
|
|
bool "AES block cipher"
|
|
default y
|
|
|
|
config MBEDTLS_CAMELLIA_C
|
|
bool "Camellia block cipher"
|
|
default n
|
|
|
|
config MBEDTLS_DES_C
|
|
bool "DES block cipher (legacy, insecure)"
|
|
default n
|
|
help
|
|
Enables the DES block cipher to support 3DES-based TLS ciphersuites.
|
|
|
|
3DES is vulnerable to the Sweet32 attack and should only be enabled
|
|
if absolutely necessary.
|
|
|
|
config MBEDTLS_BLOWFISH_C
|
|
bool "Blowfish block cipher (read help)"
|
|
default n
|
|
help
|
|
Enables the Blowfish block cipher (not used for TLS sessions.)
|
|
|
|
The Blowfish cipher is not used for mbedTLS TLS sessions but can be
|
|
used for other purposes. Read up on the limitations of Blowfish (including
|
|
Sweet32) before enabling.
|
|
|
|
config MBEDTLS_XTEA_C
|
|
bool "XTEA block cipher"
|
|
default n
|
|
help
|
|
Enables the XTEA block cipher.
|
|
|
|
|
|
config MBEDTLS_CCM_C
|
|
bool "CCM (Counter with CBC-MAC) block cipher modes"
|
|
default y
|
|
depends on MBEDTLS_AES_C || MBEDTLS_CAMELLIA_C
|
|
help
|
|
Enable Counter with CBC-MAC (CCM) modes for AES and/or Camellia ciphers.
|
|
|
|
Disabling this option saves some code size.
|
|
|
|
config MBEDTLS_GCM_C
|
|
bool "GCM (Galois/Counter) block cipher modes"
|
|
default y
|
|
depends on MBEDTLS_AES_C || MBEDTLS_CAMELLIA_C
|
|
help
|
|
Enable Galois/Counter Mode for AES and/or Camellia ciphers.
|
|
|
|
This option is generally faster than CCM.
|
|
|
|
config MBEDTLS_NIST_KW_C
|
|
bool "NIST key wrapping (KW) and KW padding (KWP)"
|
|
default n
|
|
depends on MBEDTLS_AES_C
|
|
help
|
|
Enable NIST key wrapping and key wrapping padding.
|
|
|
|
endmenu # Symmetric Ciphers
|
|
|
|
config MBEDTLS_RIPEMD160_C
|
|
bool "Enable RIPEMD-160 hash algorithm"
|
|
default n
|
|
help
|
|
Enable the RIPEMD-160 hash algorithm.
|
|
|
|
menu "Certificates"
|
|
|
|
config MBEDTLS_PEM_PARSE_C
|
|
bool "Read & Parse PEM formatted certificates"
|
|
default y
|
|
help
|
|
Enable decoding/parsing of PEM formatted certificates.
|
|
|
|
If your certificates are all in the simpler DER format, disabling
|
|
this option will save some code size.
|
|
|
|
config MBEDTLS_PEM_WRITE_C
|
|
bool "Write PEM formatted certificates"
|
|
default y
|
|
help
|
|
Enable writing of PEM formatted certificates.
|
|
|
|
If writing certificate data only in DER format, disabling this
|
|
option will save some code size.
|
|
|
|
config MBEDTLS_X509_CRL_PARSE_C
|
|
bool "X.509 CRL parsing"
|
|
default y
|
|
help
|
|
Support for parsing X.509 Certificate Revocation Lists.
|
|
|
|
config MBEDTLS_X509_CSR_PARSE_C
|
|
bool "X.509 CSR parsing"
|
|
default y
|
|
help
|
|
Support for parsing X.509 Certificate Signing Requests
|
|
|
|
endmenu # Certificates
|
|
|
|
menuconfig MBEDTLS_ECP_C
|
|
bool "Elliptic Curve Ciphers"
|
|
default y
|
|
|
|
config MBEDTLS_DHM_C
|
|
bool "Diffie-Hellman-Merkle key exchange (DHM)"
|
|
default n
|
|
help
|
|
Enable DHM. Needed to use DHE-xxx TLS ciphersuites.
|
|
|
|
Note that the security of Diffie-Hellman key exchanges depends on
|
|
a suitable prime being used for the exchange. Please see detailed
|
|
warning text about this in file `mbedtls/dhm.h` file.
|
|
|
|
config MBEDTLS_ECDH_C
|
|
bool "Elliptic Curve Diffie-Hellman (ECDH)"
|
|
depends on MBEDTLS_ECP_C
|
|
default y
|
|
help
|
|
Enable ECDH. Needed to use ECDHE-xxx TLS ciphersuites.
|
|
|
|
config MBEDTLS_ECDSA_C
|
|
bool "Elliptic Curve DSA"
|
|
depends on MBEDTLS_ECDH_C
|
|
default y
|
|
help
|
|
Enable ECDSA. Needed to use ECDSA-xxx TLS ciphersuites.
|
|
|
|
config MBEDTLS_ECJPAKE_C
|
|
bool "Elliptic curve J-PAKE"
|
|
depends on MBEDTLS_ECP_C
|
|
default n
|
|
help
|
|
Enable ECJPAKE. Needed to use ECJPAKE-xxx TLS ciphersuites.
|
|
|
|
config MBEDTLS_ECP_DP_SECP192R1_ENABLED
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bool "Enable SECP192R1 curve"
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depends on MBEDTLS_ECP_C
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default y if !(MBEDTLS_ATCA_HW_ECDSA_SIGN || MBEDTLS_ATCA_HW_ECDSA_VERIFY)
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help
|
|
Enable support for SECP192R1 Elliptic Curve.
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|
|
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config MBEDTLS_ECP_DP_SECP224R1_ENABLED
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|
bool "Enable SECP224R1 curve"
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|
depends on MBEDTLS_ECP_C
|
|
default y if !(MBEDTLS_ATCA_HW_ECDSA_SIGN || MBEDTLS_ATCA_HW_ECDSA_VERIFY)
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|
help
|
|
Enable support for SECP224R1 Elliptic Curve.
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|
|
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config MBEDTLS_ECP_DP_SECP256R1_ENABLED
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|
bool "Enable SECP256R1 curve"
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|
depends on MBEDTLS_ECP_C
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|
default y
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help
|
|
Enable support for SECP256R1 Elliptic Curve.
|
|
|
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config MBEDTLS_ECP_DP_SECP384R1_ENABLED
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|
bool "Enable SECP384R1 curve"
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|
depends on MBEDTLS_ECP_C
|
|
default y if !(MBEDTLS_ATCA_HW_ECDSA_SIGN || MBEDTLS_ATCA_HW_ECDSA_VERIFY)
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|
help
|
|
Enable support for SECP384R1 Elliptic Curve.
|
|
|
|
config MBEDTLS_ECP_DP_SECP521R1_ENABLED
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|
bool "Enable SECP521R1 curve"
|
|
depends on MBEDTLS_ECP_C
|
|
default y if !(MBEDTLS_ATCA_HW_ECDSA_SIGN || MBEDTLS_ATCA_HW_ECDSA_VERIFY)
|
|
help
|
|
Enable support for SECP521R1 Elliptic Curve.
|
|
|
|
config MBEDTLS_ECP_DP_SECP192K1_ENABLED
|
|
bool "Enable SECP192K1 curve"
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|
depends on MBEDTLS_ECP_C
|
|
default y if !(MBEDTLS_ATCA_HW_ECDSA_SIGN || MBEDTLS_ATCA_HW_ECDSA_VERIFY)
|
|
help
|
|
Enable support for SECP192K1 Elliptic Curve.
|
|
|
|
config MBEDTLS_ECP_DP_SECP224K1_ENABLED
|
|
bool "Enable SECP224K1 curve"
|
|
depends on MBEDTLS_ECP_C
|
|
default y if !(MBEDTLS_ATCA_HW_ECDSA_SIGN || MBEDTLS_ATCA_HW_ECDSA_VERIFY)
|
|
help
|
|
Enable support for SECP224K1 Elliptic Curve.
|
|
|
|
config MBEDTLS_ECP_DP_SECP256K1_ENABLED
|
|
bool "Enable SECP256K1 curve"
|
|
depends on MBEDTLS_ECP_C
|
|
default y if !(MBEDTLS_ATCA_HW_ECDSA_SIGN || MBEDTLS_ATCA_HW_ECDSA_VERIFY)
|
|
help
|
|
Enable support for SECP256K1 Elliptic Curve.
|
|
|
|
config MBEDTLS_ECP_DP_BP256R1_ENABLED
|
|
bool "Enable BP256R1 curve"
|
|
depends on MBEDTLS_ECP_C
|
|
default y if !(MBEDTLS_ATCA_HW_ECDSA_SIGN || MBEDTLS_ATCA_HW_ECDSA_VERIFY)
|
|
help
|
|
support for DP Elliptic Curve.
|
|
|
|
config MBEDTLS_ECP_DP_BP384R1_ENABLED
|
|
bool "Enable BP384R1 curve"
|
|
depends on MBEDTLS_ECP_C
|
|
default y if !(MBEDTLS_ATCA_HW_ECDSA_SIGN || MBEDTLS_ATCA_HW_ECDSA_VERIFY)
|
|
help
|
|
support for DP Elliptic Curve.
|
|
|
|
config MBEDTLS_ECP_DP_BP512R1_ENABLED
|
|
bool "Enable BP512R1 curve"
|
|
depends on MBEDTLS_ECP_C
|
|
default y if !(MBEDTLS_ATCA_HW_ECDSA_SIGN || MBEDTLS_ATCA_HW_ECDSA_VERIFY)
|
|
help
|
|
support for DP Elliptic Curve.
|
|
|
|
config MBEDTLS_ECP_DP_CURVE25519_ENABLED
|
|
bool "Enable CURVE25519 curve"
|
|
depends on MBEDTLS_ECP_C
|
|
default y if !(MBEDTLS_ATCA_HW_ECDSA_SIGN || MBEDTLS_ATCA_HW_ECDSA_VERIFY)
|
|
help
|
|
Enable support for CURVE25519 Elliptic Curve.
|
|
|
|
config MBEDTLS_ECP_NIST_OPTIM
|
|
bool "NIST 'modulo p' optimisations"
|
|
depends on MBEDTLS_ECP_C
|
|
default y
|
|
help
|
|
NIST 'modulo p' optimisations increase Elliptic Curve operation performance.
|
|
|
|
Disabling this option saves some code size.
|
|
|
|
config MBEDTLS_ECP_FIXED_POINT_OPTIM
|
|
bool "Enable fixed-point multiplication optimisations"
|
|
depends on MBEDTLS_ECP_C
|
|
default n
|
|
help
|
|
This configuration option enables optimizations to speedup (about 3 ~ 4 times) the ECP
|
|
fixed point multiplication using pre-computed tables in the flash memory.
|
|
Enabling this configuration option increases the flash footprint
|
|
(about 29KB if all Elliptic Curve selected) in the application binary.
|
|
|
|
# end of Elliptic Curve options
|
|
|
|
config MBEDTLS_POLY1305_C
|
|
bool "Poly1305 MAC algorithm"
|
|
default n
|
|
help
|
|
Enable support for Poly1305 MAC algorithm.
|
|
|
|
config MBEDTLS_CHACHA20_C
|
|
bool "Chacha20 stream cipher"
|
|
default n
|
|
help
|
|
Enable support for Chacha20 stream cipher.
|
|
|
|
config MBEDTLS_CHACHAPOLY_C
|
|
bool "ChaCha20-Poly1305 AEAD algorithm"
|
|
default n
|
|
depends on MBEDTLS_CHACHA20_C && MBEDTLS_POLY1305_C
|
|
help
|
|
Enable support for ChaCha20-Poly1305 AEAD algorithm.
|
|
|
|
config MBEDTLS_HKDF_C
|
|
bool "HKDF algorithm (RFC 5869)"
|
|
default n
|
|
help
|
|
Enable support for the Hashed Message Authentication Code
|
|
(HMAC)-based key derivation function (HKDF).
|
|
|
|
config MBEDTLS_THREADING_C
|
|
bool "Enable the threading abstraction layer"
|
|
default n
|
|
help
|
|
If you do intend to use contexts between threads, you will need to enable
|
|
this layer to prevent race conditions.
|
|
|
|
config MBEDTLS_THREADING_ALT
|
|
bool "Enable threading alternate implementation"
|
|
depends on MBEDTLS_THREADING_C
|
|
default y
|
|
help
|
|
Enable threading alt to allow your own alternate threading implementation.
|
|
|
|
config MBEDTLS_THREADING_PTHREAD
|
|
bool "Enable threading pthread implementation"
|
|
depends on MBEDTLS_THREADING_C
|
|
default n
|
|
help
|
|
Enable the pthread wrapper layer for the threading layer.
|
|
|
|
config MBEDTLS_ERROR_STRINGS
|
|
bool "Enable error code to error string conversion"
|
|
default y
|
|
help
|
|
Enables mbedtls_strerror() for converting error codes to error strings.
|
|
Disabling this config can save some code/rodata size as the error
|
|
string conversion implementation is replaced with an empty stub.
|
|
|
|
config MBEDTLS_USE_CRYPTO_ROM_IMPL
|
|
bool "Use ROM implementation of the crypto algorithm"
|
|
depends on ESP_ROM_HAS_MBEDTLS_CRYPTO_LIB
|
|
default "n"
|
|
select MBEDTLS_SHA512_C
|
|
select MBEDTLS_AES_C
|
|
select MBEDTLS_CCM_C
|
|
select MBEDTLS_CMAC_C
|
|
select MBEDTLS_ROM_MD5
|
|
select MBEDTLS_HARDWARE_SHA
|
|
select MBEDTLS_ECP_RESTARTABLE
|
|
select MBEDTLS_THREADING_C
|
|
help
|
|
Enable this flag to use mbedtls crypto algorithm from ROM instead of ESP-IDF.
|
|
|
|
This configuration option saves flash footprint in the application binary.
|
|
Note that the version of mbedtls crypto algorithm library in ROM(ECO1~ECO3) is v2.16.12,
|
|
and the version of mbedtls crypto algorithm library in ROM(ECO4) is v3.6.0.
|
|
We have done the security analysis of the mbedtls revision in ROM (ECO1~ECO4)
|
|
and ensured that affected symbols have been patched (removed). If in the future
|
|
mbedtls revisions there are security issues that also affects the version in
|
|
ROM (ECO1~ECO4) then we shall patch the relevant symbols. This would increase
|
|
the flash footprint and hence care must be taken to keep some reserved space
|
|
for the application binary in flash layout.
|
|
|
|
config MBEDTLS_FS_IO
|
|
bool "Enable functions that use the filesystem"
|
|
default y
|
|
depends on (VFS_SUPPORT_IO && VFS_SUPPORT_DIR) || IDF_TARGET_LINUX
|
|
help
|
|
This option enables functions in mbedTLS that use the filesystem.
|
|
It uses the default filesystem support for the target,
|
|
which is added through vfs component for ESP32 based targets or by
|
|
the host system when the target is Linux.
|
|
|
|
endmenu # mbedTLS
|