Add openssl backend.

Signed-off-by: Pol Henarejos <pol.henarejos@cttc.es>

cmake/openssl.cmake

@@ -0,0 +1,144 @@
+#
+# OpenSSL  wrapper configuration for Pico Keys SDK.
+# Keeps OpenSSL-specific build logic out of pico_keys_sdk_import.cmake.
+#
+
+if(NOT DEFINED USE_OPENSSL)
+    set(USE_OPENSSL 0)
+endif()
+
+set(SKIP_MBEDTLS_FOR_OPENSSL_EMULATION 0)
+set(USE_OPENSSL_EMULATION_WRAPPER 0)
+
+if(ENABLE_EMULATION AND USE_OPENSSL)
+    find_package(OpenSSL QUIET)
+    if(OpenSSL_FOUND)
+        set(SKIP_MBEDTLS_FOR_OPENSSL_EMULATION 1)
+        set(USE_OPENSSL_EMULATION_WRAPPER 1)
+        message(STATUS "OpenSSL backend:\t\t enabled")
+    else()
+        message(STATUS "OpenSSL backend:\t\t disabled (OpenSSL not found)")
+    endif()
+elseif(ENABLE_EMULATION)
+    message(STATUS "OpenSSL backend:\t\t disabled")
+endif()
+
+if(USE_OPENSSL_EMULATION_WRAPPER)
+    add_definitions(
+        -Dmbedtls_platform_zeroize=openssl_mbedtls_platform_zeroize
+        -Dmbedtls_sha256=openssl_mbedtls_sha256
+        -Dmbedtls_sha256_init=openssl_mbedtls_sha256_init
+        -Dmbedtls_sha256_free=openssl_mbedtls_sha256_free
+        -Dmbedtls_sha256_starts=openssl_mbedtls_sha256_starts
+        -Dmbedtls_sha256_update=openssl_mbedtls_sha256_update
+        -Dmbedtls_sha256_finish=openssl_mbedtls_sha256_finish
+        -Dmbedtls_md_info_from_type=openssl_mbedtls_md_info_from_type
+        -Dmbedtls_md_get_size=openssl_mbedtls_md_get_size
+        -Dmbedtls_md=openssl_mbedtls_md
+        -Dmbedtls_md_hmac=openssl_mbedtls_md_hmac
+        -Dmbedtls_md_init=openssl_mbedtls_md_init
+        -Dmbedtls_md_free=openssl_mbedtls_md_free
+        -Dmbedtls_md_setup=openssl_mbedtls_md_setup
+        -Dmbedtls_md_starts=openssl_mbedtls_md_starts
+        -Dmbedtls_md_update=openssl_mbedtls_md_update
+        -Dmbedtls_md_finish=openssl_mbedtls_md_finish
+        -Dmbedtls_hkdf=openssl_mbedtls_hkdf
+        -Dmbedtls_aes_init=openssl_mbedtls_aes_init
+        -Dmbedtls_aes_free=openssl_mbedtls_aes_free
+        -Dmbedtls_aes_setkey_enc=openssl_mbedtls_aes_setkey_enc
+        -Dmbedtls_aes_setkey_dec=openssl_mbedtls_aes_setkey_dec
+        -Dmbedtls_aes_crypt_ecb=openssl_mbedtls_aes_crypt_ecb
+        -Dmbedtls_aes_crypt_cbc=openssl_mbedtls_aes_crypt_cbc
+        -Dmbedtls_aes_crypt_cfb128=openssl_mbedtls_aes_crypt_cfb128
+        -Dmbedtls_aes_crypt_ofb=openssl_mbedtls_aes_crypt_ofb
+        -Dmbedtls_aes_crypt_ctr=openssl_mbedtls_aes_crypt_ctr
+        -Dmbedtls_aes_xts_init=openssl_mbedtls_aes_xts_init
+        -Dmbedtls_aes_xts_free=openssl_mbedtls_aes_xts_free
+        -Dmbedtls_aes_xts_setkey_enc=openssl_mbedtls_aes_xts_setkey_enc
+        -Dmbedtls_aes_xts_setkey_dec=openssl_mbedtls_aes_xts_setkey_dec
+        -Dmbedtls_aes_crypt_xts=openssl_mbedtls_aes_crypt_xts
+        -Dmbedtls_gcm_init=openssl_mbedtls_gcm_init
+        -Dmbedtls_gcm_free=openssl_mbedtls_gcm_free
+        -Dmbedtls_gcm_setkey=openssl_mbedtls_gcm_setkey
+        -Dmbedtls_gcm_crypt_and_tag=openssl_mbedtls_gcm_crypt_and_tag
+        -Dmbedtls_gcm_auth_decrypt=openssl_mbedtls_gcm_auth_decrypt
+        -Dmbedtls_ccm_init=openssl_mbedtls_ccm_init
+        -Dmbedtls_ccm_free=openssl_mbedtls_ccm_free
+        -Dmbedtls_ccm_setkey=openssl_mbedtls_ccm_setkey
+        -Dmbedtls_ccm_encrypt_and_tag=openssl_mbedtls_ccm_encrypt_and_tag
+        -Dmbedtls_ccm_auth_decrypt=openssl_mbedtls_ccm_auth_decrypt
+        -Dmbedtls_chachapoly_init=openssl_mbedtls_chachapoly_init
+        -Dmbedtls_chachapoly_free=openssl_mbedtls_chachapoly_free
+        -Dmbedtls_chachapoly_setkey=openssl_mbedtls_chachapoly_setkey
+        -Dmbedtls_chachapoly_encrypt_and_tag=openssl_mbedtls_chachapoly_encrypt_and_tag
+        -Dmbedtls_chachapoly_auth_decrypt=openssl_mbedtls_chachapoly_auth_decrypt
+        -Dmbedtls_cipher_info_from_type=openssl_mbedtls_cipher_info_from_type
+        -Dmbedtls_cipher_cmac=openssl_mbedtls_cipher_cmac
+        -Dmbedtls_mpi_init=openssl_mbedtls_mpi_init
+        -Dmbedtls_mpi_free=openssl_mbedtls_mpi_free
+        -Dmbedtls_mpi_grow=openssl_mbedtls_mpi_grow
+        -Dmbedtls_mpi_lset=openssl_mbedtls_mpi_lset
+        -Dmbedtls_mpi_size=openssl_mbedtls_mpi_size
+        -Dmbedtls_mpi_read_binary=openssl_mbedtls_mpi_read_binary
+        -Dmbedtls_mpi_read_binary_le=openssl_mbedtls_mpi_read_binary_le
+        -Dmbedtls_mpi_write_binary=openssl_mbedtls_mpi_write_binary
+        -Dmbedtls_mpi_write_binary_le=openssl_mbedtls_mpi_write_binary_le
+        -Dmbedtls_mpi_copy=openssl_mbedtls_mpi_copy
+        -Dmbedtls_mpi_cmp_mpi=openssl_mbedtls_mpi_cmp_mpi
+        -Dmbedtls_mpi_cmp_int=openssl_mbedtls_mpi_cmp_int
+        -Dmbedtls_mpi_add_mpi=openssl_mbedtls_mpi_add_mpi
+        -Dmbedtls_mpi_add_int=openssl_mbedtls_mpi_add_int
+        -Dmbedtls_mpi_sub_abs=openssl_mbedtls_mpi_sub_abs
+        -Dmbedtls_mpi_mod_mpi=openssl_mbedtls_mpi_mod_mpi
+        -Dmbedtls_asn1_get_tag=openssl_mbedtls_asn1_get_tag
+        -Dmbedtls_asn1_get_int=openssl_mbedtls_asn1_get_int
+        -Dmbedtls_asn1_get_alg_null=openssl_mbedtls_asn1_get_alg_null
+        -Dmbedtls_oid_get_md_hmac=openssl_mbedtls_oid_get_md_hmac
+        -Dmbedtls_pkcs5_pbkdf2_hmac_ext=openssl_mbedtls_pkcs5_pbkdf2_hmac_ext
+        -Dmbedtls_pkcs5_pbes2_ext=openssl_mbedtls_pkcs5_pbes2_ext
+        -Dmbedtls_rsa_gen_key=openssl_mbedtls_rsa_gen_key
+        -Dmbedtls_rsa_init=openssl_mbedtls_rsa_init
+        -Dmbedtls_rsa_free=openssl_mbedtls_rsa_free
+        -Dmbedtls_rsa_set_padding=openssl_mbedtls_rsa_set_padding
+        -Dmbedtls_rsa_get_len=openssl_mbedtls_rsa_get_len
+        -Dmbedtls_rsa_import=openssl_mbedtls_rsa_import
+        -Dmbedtls_rsa_complete=openssl_mbedtls_rsa_complete
+        -Dmbedtls_rsa_check_pubkey=openssl_mbedtls_rsa_check_pubkey
+        -Dmbedtls_rsa_check_privkey=openssl_mbedtls_rsa_check_privkey
+        -Dmbedtls_ecp_curve_info_from_grp_id=openssl_mbedtls_ecp_curve_info_from_grp_id
+        -Dmbedtls_ecp_get_type=openssl_mbedtls_ecp_get_type
+        -Dmbedtls_ecp_group_init=openssl_mbedtls_ecp_group_init
+        -Dmbedtls_ecp_group_free=openssl_mbedtls_ecp_group_free
+        -Dmbedtls_ecp_group_load=openssl_mbedtls_ecp_group_load
+        -Dmbedtls_ecp_keypair_init=openssl_mbedtls_ecp_keypair_init
+        -Dmbedtls_ecp_keypair_free=openssl_mbedtls_ecp_keypair_free
+        -Dmbedtls_ecp_gen_key=openssl_mbedtls_ecp_gen_key
+        -Dmbedtls_ecp_mul=openssl_mbedtls_ecp_mul
+        -Dmbedtls_ecp_read_key=openssl_mbedtls_ecp_read_key
+        -Dmbedtls_ecp_write_key_ext=openssl_mbedtls_ecp_write_key_ext
+        -Dmbedtls_ecp_point_read_binary=openssl_mbedtls_ecp_point_read_binary
+        -Dmbedtls_ecp_point_write_binary=openssl_mbedtls_ecp_point_write_binary
+        -Dmbedtls_ecp_point_edwards=openssl_mbedtls_ecp_point_edwards
+        -Dmbedtls_ecp_check_pubkey=openssl_mbedtls_ecp_check_pubkey
+        -Dmbedtls_ecp_check_pub_priv=openssl_mbedtls_ecp_check_pub_priv
+        -Dmbedtls_ecdsa_init=openssl_mbedtls_ecdsa_init
+        -Dmbedtls_ecdsa_free=openssl_mbedtls_ecdsa_free
+        -Dmbedtls_ecdsa_genkey=openssl_mbedtls_ecdsa_genkey
+        -Dmbedtls_rsa_private=openssl_mbedtls_rsa_private
+        -Dmbedtls_rsa_pkcs1_sign=openssl_mbedtls_rsa_pkcs1_sign
+        -Dmbedtls_rsa_rsassa_pkcs1_v15_sign=openssl_mbedtls_rsa_rsassa_pkcs1_v15_sign
+        -Dmbedtls_rsa_pkcs1_verify=openssl_mbedtls_rsa_pkcs1_verify
+        -Dmbedtls_rsa_pkcs1_decrypt=openssl_mbedtls_rsa_pkcs1_decrypt
+        -Dmbedtls_ecdh_init=openssl_mbedtls_ecdh_init
+        -Dmbedtls_ecdh_free=openssl_mbedtls_ecdh_free
+        -Dmbedtls_ecdh_setup=openssl_mbedtls_ecdh_setup
+        -Dmbedtls_ecdh_gen_public=openssl_mbedtls_ecdh_gen_public
+        -Dmbedtls_ecdh_read_public=openssl_mbedtls_ecdh_read_public
+        -Dmbedtls_ecdh_calc_secret=openssl_mbedtls_ecdh_calc_secret
+        -Dmbedtls_ecdsa_sign=openssl_mbedtls_ecdsa_sign
+        -Dmbedtls_ecdsa_verify=openssl_mbedtls_ecdsa_verify
+        -Dmbedtls_ecdsa_write_signature=openssl_mbedtls_ecdsa_write_signature
+        -Dmbedtls_eddsa_sign=openssl_mbedtls_eddsa_sign
+        -Dmbedtls_eddsa_write_signature=openssl_mbedtls_eddsa_write_signature
+    )
+endif()

pico_keys_sdk_import.cmake

@@ -79,6 +79,7 @@ endif()
 if(NOT DEFINED ENABLE_EMULATION)
     set(ENABLE_EMULATION 0)
 endif()
+include(${CMAKE_CURRENT_LIST_DIR}/cmake/openssl.cmake)
 
 option(ENABLE_DELAYED_BOOT "Enable/disable delayed boot" OFF)
 if(ENABLE_DELAYED_BOOT)
@@ -392,13 +393,19 @@ endif()
     set(INCLUDES ${INCLUDES}
         ${CMAKE_CURRENT_LIST_DIR}/tinycbor/src
     )
-set(LIBRARIES
-    mbedtls
-)
+set(LIBRARIES)
+if(NOT SKIP_MBEDTLS_FOR_OPENSSL_EMULATION)
+    list(APPEND LIBRARIES mbedtls)
+endif()
+if(USE_OPENSSL_EMULATION_WRAPPER)
+    list(APPEND LIBRARIES OpenSSL::Crypto)
+endif()
 
 if (NOT ESP_PLATFORM)
-    add_library(mbedtls STATIC ${MBEDTLS_SOURCES})
-    target_include_directories(mbedtls PUBLIC ${CMAKE_CURRENT_LIST_DIR}/mbedtls/include)
+    if(NOT SKIP_MBEDTLS_FOR_OPENSSL_EMULATION)
+        add_library(mbedtls STATIC ${MBEDTLS_SOURCES})
+        target_include_directories(mbedtls PUBLIC ${CMAKE_CURRENT_LIST_DIR}/mbedtls/include)
+    endif()
     if(USB_ITF_HID)
         add_library(tinycbor STATIC ${CBOR_SOURCES})
         target_include_directories(tinycbor PUBLIC ${CMAKE_CURRENT_LIST_DIR}/tinycbor/src)
@@ -479,6 +486,11 @@ if(ENABLE_EMULATION)
     set(PICO_KEYS_SOURCES ${PICO_KEYS_SOURCES}
         ${CMAKE_CURRENT_LIST_DIR}/src/usb/emulation/emulation.c
     )
+    if(USE_OPENSSL_EMULATION_WRAPPER)
+        set(PICO_KEYS_SOURCES ${PICO_KEYS_SOURCES}
+            ${CMAKE_CURRENT_LIST_DIR}/src/usb/emulation/openssl.c
+        )
+    endif()
     set(MBEDTLS_SOURCES ${MBEDTLS_SOURCES}
         ${CMAKE_CURRENT_LIST_DIR}/mbedtls/library/aesni.c
     )
@@ -529,10 +541,12 @@ if(PICO_RP2350)
     set(INCLUDES ${INCLUDES}
         ${CMAKE_CURRENT_LIST_DIR}/config/rp2350/alt
     )
-    target_include_directories(mbedtls PRIVATE
-        ${CMAKE_CURRENT_LIST_DIR}/config/rp2350/alt
-    )
-    target_link_libraries(mbedtls PRIVATE pico_sha256)
+    if(TARGET mbedtls)
+        target_include_directories(mbedtls PRIVATE
+            ${CMAKE_CURRENT_LIST_DIR}/config/rp2350/alt
+        )
+        target_link_libraries(mbedtls PRIVATE pico_sha256)
+    endif()
     set(PICO_KEYS_SOURCES ${PICO_KEYS_SOURCES}
         ${CMAKE_CURRENT_LIST_DIR}/config/rp2350/alt/sha256_alt.c
     )