Warnings are treated as errors in Mbed TLS test. An error
"ssl_parse_client_hello_v2’ defined but not used" can occur in some
specific configurations and therefore tests will break.
Use similar flags for static function "ssl_parse_client_hello_v2" as
what is used when calling the function to prevent the compilation
warning/error.
query_opt is used to read Mbed TLS configuration values instead of
config.pl script. Now MBEDTLS_SSL_MAX_CONTENT_LEN value is correctly
read and some tests needs to be removed from the test set when value
of MBEDTLS_SSL_MAX_CONTENT_LEN is too small for the test.
-Add comments to Makefiles about test env auto-detection
-Fix indentation
-Remove parent folder from include dirs
-Do not use environment variable for defining config file because
env variable usage is not fully implemented
-Revert changes to config.pl
This commit reimplements the helper functions
- requires_config_enabled
- requires_config_disabled
in ssl-opt.sh in terms of the programs/test/query_config
programs which allows to query the configuration in which
Mbed TLS was built.
This removes the dependency of ssl-opt.sh from the config
that was used to build the library.
The uint32 is given as a bigendian stream, in the tests, however,
the char buffer that collected the stream read it as is,
without converting it. Add a temporary buffer, to call `greentea_getc()`
8 times, and then put it in the correct endianity for input to `unhexify()`.
Reduce the stack usage of the `test_suite_pkcs1_v21` by reducing the
size of the buffers used in the tests, to a reasonable big enough size,
and change the size sent to the API to sizeof output.
Reduce the stack usage of the `test_suite_rsa` by reducing the
size of the buffers used in the tests, to a reasonable big enough size,
and change the data size to decrypt in the data file.
This makes a mbedtls_pk_context memory-wise equivalent to a
mbedtls_uecc_keypair and removes a dynamic allocation, making the PK layer
zero-cost in terms of memory when PK_SINGLE_TYPE is enabled.
In very reduced configurations, we don't want the overhead of maintaining a
bool just to remember if the context is valid and checking that bit at every
point of entry.
Note: so far this validity bit also served as a proxy to ensure that pk_ctx
was valid (currently this is a pointer to a dynamically-allocated buffer). In
the next series of commits, this will be changed to a statically-allocated
buffer, so there will be no question about its validity.
In the end (after this commit and the next series), a pk_context_t will be
(memory-wise) just the same as a mbedtls_uecc_keypair when SINGLE_TYPE is
enabled - meaning the PK layer will have zero memory overhead in that case.
So far, with MBEDTLS_SSL_KEEP_PEER_CERTIFICATE disabled, the SSL module relied
on a undocumented feature of the PK module: that you can distinguish between
contexts that have been setup and context that haven't. This feature is going
to go away in the case of PK_SINGLE_TYPE, as we'll soon (as in: the next
commit does that) no longer be storing the (now two-valued) pk_info member.
Note even with this change, we could still distinguish if the context has been
set up by look if pk_ctx is NULL or not, but this is also going away in the
near future (a few more commits down the road), so not a good option either.
This is the first in a series of commit aimed at removing the pk_info
structures when we're building with MBEDTLS_PK_SINGLE_TYPE enabled.
Introducing this abstraction allows us to later make it a two-valued type
(valid, invalid) instead, which is much lighter.
For optional functions, we introduce an extra macro to tell if the function is
omitted. As the C preprocessor doesn't directly support comparing strings,
testing if the _FUNC macro is defined to NULL isn't obvious. One could
probably play tricks to avoid the need for _OMIT macros, but the small amount
of (entirely local) duplication here is probably a lesser evil than extra
preprocessor complexity.
We want public functions to resolve to the internal wrappers at compile-time.
For this we need the wrappers to be visible from where the public functions
are defined. A simple declaration is not enough if we want the compiler to be
able to inline the wrapper and eliminate function overhead.
This commit just copies verbatim the contents of pk_wrap.c into pk.c. The next
commit will clean up the result (redundant includes etc.).
No effect for now, just declaring it here, implemented in subsequent commits.
The option requires MBEDTLS_USE_TINYCRYPT and is incompatible with
MBEDTLS_PK_RSA_ALT_SUPPORT and MBEDTLS_RSA_C.
Currently users (including the X.509 and SSL libraries) assume that if both PK
and RSA are enabled, then RSA is available through PK. If we allowed RSA to be
enabled together with PK_SINGLE_TYPE, we'd break that assumption. Going
through the code to find all place that rely on that assumption and fix them
would be cumbersome, and people who want PK_SINGLE_TYPE are unlikely to care
about RSA anyway, so let's just make them incompatible.
This is also consistent with what's done in the MD module: MD_SINGLE_HASH
requires that exactly one hash be enabled.
The programs assume that including "pk.h" brings up "bignum.h". When
MBEDTLS_USE_TINYCRYPT is enabled and MBEDTLS_RSA_C is disabled, that
assumption no longer holds. Fix that by explicitly including bignum.h from the
programs that need it.
This is a bug pre-existing to this PR, fixed here to enable the inclusion of a
test with a config that happens to reveal it.
This achieves two related goals:
1. Those members are now only accessed via the accessor function (except in
code paths that we don't care about: those guarded by
MBEDTLS_PK_RSA_ALT_SUPPORT or MBEDTLS_ECP_RESTARTABLE)
2. When we turn on compile-time dispatch, we don't obviously don't want to
keep a runtime NULL check.
For debug this requires changing the signature or the accessor function to
return int; this is done without changing the signature of the accessed
function.
1. Mark an RSA-alt-specific code path as such.
2. Move NULL check for wrapper function closer to the use of that function.
Those are in preparation of the next commit.
This is the first commit in a series aiming at implementing optional
compile-time dispatch when a single PK type is hardcoded. At the end of this
series, the functions introduced here will directly resolve to the correct
function at compile-time when this (to be created) option is enabled.
