godot/core/crypto/SCsub
Fabio Alessandrelli ee7b67e135 [Crypto] Implement CryptoCore::RandomGenerator.
As a cryptographically secure random generator.

Internally it uses mbedTLS CTR-DRBG implementation which gets re-seeded
with entropy from OS::get_entropy when needed.

CryptoCore now additionally depends on `ctr_drbg.c` and `entropy.c`
thirdparty mbedtls files.
2022-02-14 10:45:50 +01:00

55 lines
1.8 KiB
Python

#!/usr/bin/env python
Import("env")
env_crypto = env.Clone()
is_builtin = env["builtin_mbedtls"]
has_module = env["module_mbedtls_enabled"]
thirdparty_obj = []
if is_builtin or not has_module:
# Use our headers for builtin or if the module is not going to be compiled.
# We decided not to depend on system mbedtls just for these few files that can
# be easily extracted.
env_crypto.Prepend(CPPPATH=["#thirdparty/mbedtls/include"])
# MbedTLS core functions (for CryptoCore).
# If the mbedtls module is compiled we don't need to add the .c files with our
# custom config since they will be built by the module itself.
# Only if the module is not enabled, we must compile here the required sources
# to make a "light" build with only the necessary mbedtls files.
if not has_module:
env_thirdparty = env_crypto.Clone()
env_thirdparty.disable_warnings()
# Custom config file
env_thirdparty.Append(
CPPDEFINES=[("MBEDTLS_CONFIG_FILE", '\\"thirdparty/mbedtls/include/godot_core_mbedtls_config.h\\"')]
)
thirdparty_mbedtls_dir = "#thirdparty/mbedtls/library/"
thirdparty_mbedtls_sources = [
"aes.c",
"base64.c",
"constant_time.c",
"ctr_drbg.c",
"entropy.c",
"md5.c",
"sha1.c",
"sha256.c",
"godot_core_mbedtls_platform.c",
]
thirdparty_mbedtls_sources = [thirdparty_mbedtls_dir + file for file in thirdparty_mbedtls_sources]
env_thirdparty.add_source_files(thirdparty_obj, thirdparty_mbedtls_sources)
env.core_sources += thirdparty_obj
# Godot source files
core_obj = []
env_crypto.add_source_files(core_obj, "*.cpp")
env.core_sources += core_obj
# Needed to force rebuilding the core files when the thirdparty library is updated.
env.Depends(core_obj, thirdparty_obj)