Wildcard patterns now work with command line COMPONENT arguments
without --except as well as with. You can now run e.g.
`all.sh "check_*` to run all the sanity checks.
After backing up and restoring config.h, `git diff-files` may report
it as potentially-changed because it isn't sure whether the index is
up to date. Use `git diff` instead: it actually reads the file.
Only look for armcc if component_build_armcc is to be executed,
instead of requiring the option --no-armcc.
You can still pass --no-armcc, but it's no longer required when
listing components to run. With no list of components or an exclude
list on the command line, --no-armcc is equivalent to having
build_armcc in the exclude list.
Build the list of components to run in $RUN_COMPONENTS as part of
command line parsing. After parsing the command line, it no longer
matters how this list was built.
Extract the list of available components by looking for definitions of
functions called component_xxx. The previous code explicitly listed
all components in run_all_components, which opened the risk of
forgetting to list a component there.
Add a conditional execution facility: if a function support_xxx exists
and returns false then component_xxx is not executed (except when the
command line lists an explicit set of components to execute).
MAKEFLAGS was set to -j if it was already set, instead of being set if
not previously set as intended. So now all.sh will do parallel builds
if invoked without MAKEFLAGS in the environment.
Don't bail out of all.sh if the OS isn't Linux. We only expect
everything to pass on a recent Linux x86_64, but it's useful to call
all.sh to run some components on any platform.
In all.sh, always run both MemorySanitizer and Valgrind. Valgrind is
slower than ASan and MSan but finds some things that they don't.
Run MSan unconditionally, not just on Linux/x86_64. MSan is supported
on some other OSes and CPUs these days.
Use `all.sh --except test_memsan` if you want to omit MSan because it
isn't supported on your platform. Use `all.sh --except test_memcheck`
if you want to omit Valgrind because it's too slow.
Make the test scripts more portable (tested on FreeBSD): don't insist
on GNU sed, and recognize amd64 as well as x86_64 for `uname -m`. The
`make` utility must still be GNU make.
Call `set disable-randomization off` only if it seems to be supported.
The goal is to neither get an error about disable-randomization not
being supported (e.g. on FreeBSD), nor get an error if it is supported
but fails (e.g. on Ubuntu).
Only fiddle with disable-randomization from all.sh, which cares
because it reports the failure of ASLR disabling as an error. If a
developer invokes the Gdb script manually, a warning about ASLR
doesn't matter.
Use `cmake -D CMAKE_BUILD_TYPE=Asan` rather than manually setting
`-fsanitize=address`. This lets cmake determine the necessary compiler
and linker flags.
With UNSAFE_BUILD on, force -Wno-error. This is necessary to build
with MBEDTLS_TEST_NULL_ENTROPY.
Merge the work on all.sh that was done on mbedtls-2.14.0 with the
changes from mbedtls-2.14.0 to mbedtls-2.16.0.
There is a merge conflict in test/scripts/all.sh, which is the only
file that was modified in the all.sh work branch. I resolved it by
taking the copy from the all.sh branch and applying the changes
between mbedtls-2.14.0 and mbedtls-2.16.0. These changes consisted of
two commits:
* "Add tests to all.sh for CHECK_PARAMS edge cases": adds two
test components which are reproduced here as
test_check_params_without_platform and component_test_check_params_silent.
* "tests: Backup config.h before modifying it": moot because the
component framework introduced in the all.sh branch backs up config.h
systematically.
In all.sh, always save config.h before running a component, instead of
doing it manually in each component that requires it (except when we
forget, which has happened). This would break a script that requires
config.h.bak not to exist, but we don't have any of those.
Call cleanup from run_component instead of calling it from each
individual component function.
Clean up after each component rather than before. With the new
structure it makes more sense for each component to leave the place
clean. Run cleanup once at the beginning to start from a clean slate.
Move almost all the code of this script into functions. There is no
intended behavior change. The goal of this commit is to make
subsequent improvements easier to follow.
A very large number of lines have been reintended. To see what's going
on, ignore whitespace differences (e.g. diff -w).
I followed the following rules:
* Minimize the amount of code that gets moved.
* Don't change anything to what gets executed or displayed.
* Almost all the code must end up in a function.
* One function does one thing. For most of the code, that's from one
"cleanup" to the next.
* The test sequence functions (run_XXX) are independent.
The change mostly amounts to putting chunks of code into a function
and calling the functions in order. A few test runs are conditional;
in those cases the conditional is around the function call.
tests/Makefile had some unused warnings disabled unnecessarily, which
test-ref-configs.pl was turning back on. We don't need to disable these warnings
so I'm turning them back on.
Dependent on configured options, not all of the helper functions were being
used, which was leading to warning of unused functions with Clang.
To avoid any complex compile time options, or adding more logic to
generate_test_code.py to screen out unused functions, those functions which were
provoking the warning were changed to remove static, remove them from file
scope, and expose them to the linker.
Document when a context must be initialized or not, when it must be
set up or not, and whether it needs a private key or a public key will
do.
The implementation is sometimes more liberal than the documentation,
accepting a non-set-up context as a context that can't perform the
requested information. This preserves backward compatibility.
The MPI_VALIDATE_RET() macro cannot be used for parameter
validation of mbedtls_mpi_lsb() because this function returns
a size_t.
Use the underlying MBEDTLS_INTERNAL_VALIDATE_RET() insteaed,
returning 0 on failure.
Also, add a test for this behaviour.
For mbedtls_pk_parse_key and mbedtls_pk_parse_keyfile, the password is
optional. Clarify what this means: NULL is ok and means no password.
Validate parameters and test accordingly.
The test that mbedtls_aria_free() accepts NULL parameters
can be performed even if MBEDTLS_CHECK_PARAMS is unset, but
was previously included in the test case aria_invalid_params()
which is only executed if MBEDTLS_CHECK_PARAMS is set.
It's good to make a backup of config.h before modifying it, so that when
"cleanup" runs the next test has a clean default config.h to start from.
Fixes 840af0a9ae ("Add tests to all.sh for CHECK_PARAMS edge cases")
Parameter validation was previously performed and tested unconditionally
for the ChaCha/Poly modules. This commit therefore only needs go guard the
existing tests accordingly and use the appropriate test macros for parameter
validation.
With the build option SKIP_TEST_SUITES=..., the specified test suites
are built, but skipped when running tests. Usage:
make check SKIP_TEST_SUITES=timing,gcm
or
cmake -D SKIP_TEST_SUITES=timing,gcm ...
The list can be separated by any of space, comma or semicolon, and each
element can be a regular expression in ERE syntax except that "." stands
for itself. Skipping "foo" skips not only "foo" itself but also
any "foo.bar", but does not skip "foobar".
Previously, one could change the definition of AES_VALIDATE_RET() to return
some other code than MBEDTLS_ERR_AES_BAD_INPUT_DATA, and the test suite
wouldn't notice. Now this modification would make the suite fail as expected.
The test framework for validation of parameters depends on the macro
MBEDTLS_PARAM_FAILED() being set to its default value when building the
library. So far the test framework attempted to define this macro but this was
the wrong place - this definition wouldn't be picked by the library.
Instead, a different approach is taken: skip those tests when the macro is
defined in config.h, as in that case we have no way to know if it will indeed
end up calling mbedtls_param_failed() as we need it to.
This commit was tested by manually ensuring that aes_invalid_params:
- passes (and is not skipped) in the default configuration
- is skipped when MBEDTLS_PARAM_FAILED() is defined in config.h
The previous prototype gave warnings are the strings produced by #cond and
__FILE__ are const, so we shouldn't implicitly cast them to non-const.
While at it modifying most example programs:
- include the header that has the function declaration, so that the definition
can be checked to match by the compiler
- fix whitespace
- make it work even if PLATFORM_C is not defined:
- CHECK_PARAMS is not documented as depending on PLATFORM_C and there is
no reason why it should
- so, remove the corresponding #if defined in each program...
- and add missing #defines for mbedtls_exit when needed
The result has been tested (make all test with -Werror) with the following
configurations:
- full with CHECK_PARAMS with PLATFORM_C
- full with CHECK_PARAMS without PLATFORM_C
- full without CHECK_PARAMS without PLATFORM_C
- full without CHECK_PARAMS with PLATFORM_C
Additionally, it has been manually tested that adding
mbedtls_aes_init( NULL );
near the normal call to mbedtls_aes_init() in programs/aes/aescrypt2.c has the
expected effect when running the program.
It was inconsistent between files: sometimes 3 arguments, sometimes one.
Align to 1 argument for the macro and 3 for the function, because:
- we don't need 3 arguments for the macro, it can add __FILE__ and __LINE__
in its expansion, while the function needs them as parameters to be correct;
- people who re-defined the macro should have flexibility, and 3 arguments
can give the impression they they don't have as much as they actually do;
- the design document has the macro with 1 argument, so let's stick to that.
Change the use of setjmp and longjmp in signalling parameter validation failures
when using the MBEDTLS_CHECK_PARAMS config.h option. This change allows
all calls which might result in a call to the parameter validation failure
handler to always be caught, even without use of the new macros, by placing a
setjmp() in the outer function which calls the test function, which the handler
can jump to.
This has several benefits:
* it allows us to remove the clang compiler warning (-Wclobbered) caused
by local auto variables being in the same function as the call to setjmp.
* removes the need to wrap all function calls in the test functions with the
TEST_ASSERT() macro. Now all parameter validation function calls should be
caught.
We've changed the behavior of "-v" to no longer output test summary
statuses. Update basic-build-test.sh to use the test runner's verbosity
option "-v 2", so that the basic-build-test.sh script can get the summary
statuses it needs.
The tests for the ECDH key exchange that use the context accessed it
directly. This can't work with the new context, where we can't make any
assumptions about the implementation of the context. This commit works
around this problem and comes with the cost of allocating an extra
structures on the stack when executing the test.
One of the tests is testing an older interface for the sake of backward
compatibility. The new ECDH context is not backward compatible and this
test doesn't make any sense for it, therefore we skip this test in
non-legacy mode.
The recently added `mbedtls_ecdh_setup()` function is not used in the
tests yet. This commit adapts the tests to the new workflow.
Having done that, the old lifecycle is not tested anymore, so we add a
new test to ensure backward compatibility.
Fix parsing error that contains special character.
The previous implementation replaced the `:` char with `\n`,
and split on `\n`. Test data containing strings with `\n`
were split as well. Fixes#2193.
The split function caused strings containing `\:` to add
another escape char, resulting in `\\:`. This caused the
tests with the `\:` in the string data to fail.
The fix doesn't replace with `\n`, but splits all `:` that
are not preceded with `\`. After that, removes the preceding `\` char.
Since the AD too long is a limitation on Mbed TLS,
HW accelerators may support this. Run the test for AD too long,
only if `MBEDTLS_CCM_ALT` is not defined.
Addresses comment in #1996.
Detect Git merge artifacts. These are lines starting with "<<<<<<",
"|||||||" or ">>>>>>>" followed by a space, or containing just
"=======". For "=======", exempt Markdown files, because this can be
used to underline a title, as a compromise between false negatives and
false positives.
Programs and tests need to be able to use PSA header files when
USE_CRYPTO_SUBMODULE and MBEDTLS_USE_PSA_CRYPTO are set. Add the crypto
submodule include folder, which contains psa headers, after the main
include folder so that psa headers can be found and crypto submodule
headers don't take precedence over mbedtls headers.
The check-files script contains the strings "TODO" and "todo" in order to
search for files that contain TODO items. So, any check-files script would
need to be excluded from the list of files that gets checked for "TODO".
Normally, the script excludes itself from checks, but with the addition of
the crypto submodule, there is another copy of the script present from the
project root. We must avoid checking check-files scripts for TODO items.
This also helps if you run check-files from another working tree in your
working tree.
So far, make sure we test the following ciphersuites
without any fallback to non-PSA ciphers:
TLS-ECDHE-ECDSA-WITH-AES-128-CCM
TLS-ECDHE-ECDSA-WITH-AES-128-CCM-8
TLS-ECDHE-ECDSA-WITH-AES-256-CCM
TLS-ECDHE-ECDSA-WITH-AES-256-CCM-8
TLS-ECDHE-ECDSA-WITH-AES-128-GCM-SHA256
TLS-ECDHE-ECDSA-WITH-AES-256-GCM-SHA384
TLS-ECDHE-ECDSA-WITH-AES-128-CBC-SHA
TLS-ECDHE-ECDSA-WITH-AES-128-CBC-SHA256
TLS-ECDHE-ECDSA-WITH-AES-256-CBC-SHA384
The test suites `test_suite_gcm.aes{128,192,256}_en.data` contains
numerous NIST test vectors for AES-*-GCM against which the GCM
API mbedtls_gcm_xxx() is tested.
However, one level higher at the cipher API, no tests exist which
exercise mbedtls_cipher_auth_{encrypt/decrypt}() for GCM ciphers,
although test_suite_cipher.function contains the test auth_crypt_tv
which does precisely that and is already used e.g. in
test_suite_cipher.ccm.
This commit replicates the test vectors from
test_suite_gcm.aes{128,192,256}_en.data in test_suite_cipher.gcm.data
and adds a run of auth_crypt_tv for each of them.
The conversion was mainly done through the sed command line
```
s/gcm_decrypt_and_verify:\([^:]*\):\([^:]*\):\([^:]*\):\([^:]*\):
\([^:]*\):\([^:]*\):\([^:]*\):\([^:]*\):\([^:]*\):\([^:]*\)/auth_crypt_tv:
\1:\2:\4:\5:\3:\7:\8:\9/
```
It's better for names in the API to describe the "what" (opaque keys) rather
than the "how" (using PSA), at least since we don't intend to have multiple
function doing the same "what" in different ways in the foreseeable future.
Unfortunately the can_do wrapper does not receive the key context as an
argument, so it cannot check psa_get_key_information(). Later we might want to
change our internal structures to fix this, but for now we'll just restrict
opaque PSA keys to be ECDSA keypairs, as this is the only thing we need for
now. It also simplifies testing a bit (no need to test each key type).
While at it, clarify who's responsible for destroying the underlying key. That
can't be us because some keys cannot be destroyed and we wouldn't know. So
let's leave that up to the caller.
Previously, command line arguments `psk_slot` and `psk_list_slot`
could be used to indicate the PSA key slots that the example
applications should use to store the PSK(s) provided.
This commit changes this approach to use the utility function
`mbedtls_psa_get_free_key_slot()` to obtain free key slots from
the PSA Crypto implementation automatically, so that users only
need to pass boolean flags `psk_opaque` and `psk_list_opaque`
on the command line to enable / disable PSA-based opaque PSKs.
Add a test to ensure that when the crypto submodule is not used, the crypto
library is not created and that libmbedcrypto.a does not contain symbols
from files contained within the crypto submodule.
- Check that libmbedcrypto was not built at the top level.
- Check that we've built libmbedcrypto with the correct files. Build
libmbedcrypto with debug symbols and verify that files used are from the
crypto submodule.
- Check that config.h is handled properly. Enable a feature at the top
level that the crypto library submodule has disabled in its config.h, and
check that the library symboles indicate that the feature is present in
libmbedcrypto.
- Ensure basic functionality of the resulting build with a run of
`make test` and `ssl-opt.sh`.
all.sh's cleanup function would not entirely remove CMakeFiles due to a
missing -o in its fine command. Add a -o after prune, so that the find for
CMakeFiles can succeed.
`test_hkdf` in the hkdf test suites consumed stack of ~6KB with
6 buffers of ~1KB each. This causes stack overflow on some platforms
with smaller stack. The buffer sizes were reduced. By testing, the sizes
can be reduced even further, as the largest seen size is 82 bytes(for okm).
The invocation of `compat.sh` that runs those tests was added in all.sh but
not here, resulting in our reported coverage figures being slightly lower than
what we actually test. Fixing that omission change the figures reported from:
Lines Tested : 19105 of 22623 84.4%
Functions Tested : 1392 of 1460 95.3%
to:
Lines Tested : 19126 of 22623 84.5%
Functions Tested : 1399 of 1460 95.8%
It requires `$OPENSSL_NEXT` to be set and point to an OpenSSL version in the
1.1.1 line or later.
This commit introduces variants test-ca_utf8.crt,
test-ca_printablestring.crt and test-ca_uppercase.crt
of tests/data_files/test-ca.crt which differ from
test-ca.crt in their choice of string encoding and
upper and lower case letters in the DN field. These
changes should be immaterial to the recovation check,
and three tests are added that crl.pem, which applies
to test-ca.crt, is also considered as applying to
test-ca_*.crt.
The test files were generated using PR #1641 which
- adds a build instruction for test-ca.crt to
tests/data_files/Makefile which allows easy
change of the subject DN.
- changes the default string format from `PrintableString`
to `UTF8String`.
Specifically:
- `test-ca_utf8.crt` was generated by running
`rm test-ca.crt && make test-ca.crt`
on PR #1641.
- `test-ca_uppercase.crt`, too, was generated by running
`rm test-ca.crt && make test-ca.crt`
on PR #1641, after modifying the subject DN line in the build
instruction for `test-ca.crt` in `tests/data_files/Makefile`.
- `test-ca_printable.crt` is a copy of `test-ca.crt`
because at the time of this commit, `PrintableString` is
still the default string format.
Enable passing a number to "-v" in order to set the level of verbosity.
Print detailed test failure information at verbosity level 1 or higher.
Display summary messages at the verbosity level 2 or higher. Print
detailed test information at verbosity level 3 or higher, whether the
test failed or not. This enables a more readable output style that
includes detailed failure information when a failure occurs.
Previous commits have added or modified build instructions for
server1*, server2*, server5*, test-ca*, cli-rsa* in the Makefile
tests/data_files/Makefile, or the apps they invoke have been changed.
This commit regenerates those files to make sure they are in match with
the build instructions.
This commit introduces variants test-ca_utf8.crt,
test-ca_printablestring.crt and test-ca_uppercase.crt
of tests/data_files/test-ca.crt which differ from
test-ca.crt in their choice of string encoding and
upper and lower case letters in the DN field. These
changes should be immaterial to the recovation check,
and three tests are added that crl.pem, which applies
to test-ca.crt, is also considered as applying to
test-ca_*.crt.
Previously, CSRs and CRTs from the server1* family in testa/data_files
were generated through OpenSSL. This commit changes the build instructions
to use Mbed TLS' example applications programs/x509/cert_write and
programs/x509/cert_req instead.
* development:
ssl-opt.sh: change expected output for large srv packet test with SSLv3
Adapt ChangeLog
Fix bug in SSL ticket implementation removing keys of age < 1s
ssl-opt.sh: Add DTLS session resumption tests
Add ChangeLog entry
Fix typo
Fix hmac_drbg failure in benchmark, with threading
Remove trailing whitespace
Remove trailing whitespace
ssl_server2: add buffer overhead for a termination character
Add missing large and small packet tests for ssl_server2
Added buffer_size and response_size options for ssl-server2. Added appropriate tests.
Solving a conflict in tests/ssl-opt.sh: two set of tests were added at the
same place (just after large packets):
- restartable ECC tests (in this branch)
- server-side large packets (in development)
Resolution was to move the ECC tests after the newly added server large packet
ones.
This commit adds a test to tests/scripts/all.sh exercising an
ASan build of the default configuration with
MBEDTLS_PLATFORM_MEMORY enabled,
MBEDTLS_PLATFORM_CALLOC_MACRO set to std calloc
MBEDTLS_PLATFORM_FREE_MACRO set to std free
(This should functionally be indistinguishable from a default build)
Extend the mbedtls_mpi_is_prime_det test to check that it reports
the number as prime when testing rounds-1 rounds, then reports the
number as composite when testing the full number of rounds.
When using a primality testing function the tolerable error rate depends
on the scheme in question, the required security strength and wether it
is used for key generation or parameter validation. To support all use
cases we need more flexibility than what the old API provides.
Primality tests have to deal with different distribution when generating
primes and when validating primes.
These new tests are testing if mbedtls_mpi_is_prime() is working
properly in the latter setting.
The new tests involve pseudoprimes with maximum number of
non-witnesses. The non-witnesses were generated by printing them
from mpi_miller_rabin(). The pseudoprimes were generated by the
following function:
void gen_monier( mbedtls_mpi* res, int nbits )
{
mbedtls_mpi p_2x_plus_1, p_4x_plus_1, x, tmp;
mbedtls_mpi_init( &p_2x_plus_1 );
mbedtls_mpi_init( &p_4x_plus_1 );
mbedtls_mpi_init( &x ); mbedtls_mpi_init( &tmp );
do
{
mbedtls_mpi_gen_prime( &p_2x_plus_1, nbits >> 1, 0,
rnd_std_rand, NULL );
mbedtls_mpi_sub_int( &x, &p_2x_plus_1, 1 );
mbedtls_mpi_div_int( &x, &tmp, &x, 2 );
if( mbedtls_mpi_get_bit( &x, 0 ) == 0 )
continue;
mbedtls_mpi_mul_int( &p_4x_plus_1, &x, 4 );
mbedtls_mpi_add_int( &p_4x_plus_1, &p_4x_plus_1, 1 );
if( mbedtls_mpi_is_prime( &p_4x_plus_1, rnd_std_rand,
NULL ) == 0 )
break;
} while( 1 );
mbedtls_mpi_mul_mpi( res, &p_2x_plus_1, &p_4x_plus_1 );
}
Functional tests for various payload sizes and output buffer sizes.
When the padding is bad or the plaintext is too large for the output
buffer, verify that function writes some outputs. This doesn't
validate that the implementation is time-constant, but it at least
validates that it doesn't just return early without outputting anything.
Exclude ".git" directories anywhere. This avoids spurious errors in git
checkouts that contain branch names that look like a file
check-files.py would check. Fix#1713
Exclude "mbed-os" anywhere and "examples" from the root. Switch to the
new mechanism to exclude "yotta/module". These are directories where
we store third-party files that do not need to match our preferences.
Exclude "cov-int" from the root. Fix#1691
Changes run-test-suites.pl to filter out directories, and select only files
as on OSX, test coverage tests create .dSYM directories which were being
accidentally selected to execute.
We don't need to disable ASLR, so don't try. If gdb tries but fails,
the test runs normally, but all.sh then trips up because it sees
`warning: Error disabling address space randomization: Operation not permitted`
and interprets it as an error that indicates a test failure.
Add signing tests with 528-bit and 520-bit RSA keys with SHA-512. These
selections of key and hash size should lead to an error returned, as
there is not enough room for our chosen minimum salt size of two bytes
less than the hash size. These test the boundary around an available
salt length of 0 or -1 bytes.
The RSA keys were generated with OpenSSL 1.1.1-pre8.
$ openssl genrsa 520
Generating RSA private key, 520 bit long modulus (2 primes)
.............++++++++++++
.................++++++++++++
e is 65537 (0x010001)
-----BEGIN RSA PRIVATE KEY-----
MIIBPwIBAAJCANWgb4bludh0KFQBZcqWb6iJOmLipZ0L/XYXeAuwOfkWWjc6jhGd
B2b43lVnEPM/ZwGRU7rYIjd155fUUdSCBvO/AgMBAAECQgDOMq+zy6XZEjWi8D5q
j05zpRGgRRiKP/qEtB6BWbZ7gUV9DDgZhD4FFsqfanwjWNG52LkM9D1OQmUOtGGq
a9COwQIhD+6l9iIPrCkblQjsK6jtKB6zmu5NXcaTJUEGgW68cA7PAiENaJGHhcOq
/jHqqi2NgVbc5kWUD/dzSkVzN6Ub0AvIiBECIQIeL2Gw1XSFYm1Fal/DbQNQUX/e
/dnhc94X7s118wbScQIhAMPVgbDc//VurZ+155vYc9PjZlYe3QIAwlkLX3HYKkGx
AiEND8ndKyhkc8jLGlh8aRP8r03zpDIiZNKqCKiijMWVRYQ=
-----END RSA PRIVATE KEY-----
$ openssl genrsa 528
Generating RSA private key, 528 bit long modulus (2 primes)
.........++++++++++++
....++++++++++++
e is 65537 (0x010001)
-----BEGIN RSA PRIVATE KEY-----
MIIBQgIBAAJDAKJVTrpxW/ZuXs3z1tcY4+XZB+hmbnv1p2tBUQbgTrgn7EyyGZz/
ZkkdRUGQggWapbVLDPXu9EQ0AvMEfAsObwJQgQIDAQABAkJhHVXvFjglElxnK7Rg
lERq0k73yqfYQts4wCegTHrrkv3HzqWQVVi29mGLSXTqoQ45gzWZ5Ru5NKjkTjko
YtWWIVECIgDScqoo7SCFrG3zwFxnGe7V3rYYr6LkykpvczC0MK1IZy0CIgDFeINr
qycUXbndZvF0cLYtSmEA+MoN7fRX7jY5w7lZYyUCIUxyiOurEDhe5eY5B5gQbJlW
ePHIw7S244lO3+9lC12U1QIhWgzQ8YKFObZcEejl5xGXIiQvBEBv89Y1fPu2YrUs
iuS5AiFE64NJs8iI+zZxp72esKHPXq/chJ1BvhHsXI0y1OBK8m8=
-----END RSA PRIVATE KEY-----
Since we wish to generate RSASSA-PSS signatures even when hashes are
relatively large for the chosen RSA key size, we need some tests. Our
main focus will be on 1024-bit keys and the couple key sizes larger than
it. For example, we test for a signature generated using a salt length
of 63 when a 1032-bit key is used. Other tests check the boundary
conditions around other key sizes. We want to make sure we don't use a
salt length larger than the hash length (because FIPS 186-4 requires
this). We also want to make sure we don't use a salt that is too small
(no smaller than 2 bytes away from the hash length).
Test RSASSA-PSS signatures with:
- 1024-bit key and SHA-512 (slen 62)
- 1032-bit key and SHA-512 (slen 63)
- 1040-bit key and SHA-512 (slen 64)
- 1048-bit key and SHA-512 (slen 64)
The tests also verify that we can properly verify the RSASSA-PSS
signatures we've generated.
We've manually verified that OpenSSL 1.1.1-pre8 can verify the
RSASSA-PSS signatures we've generated.
$ openssl rsa -in rsa1024.pem -pubout -out pub1024.pem
writing RSA key
$ openssl rsa -in rsa1032.pem -pubout -out pub1032.pem
writing RSA key
$ openssl rsa -in rsa1040.pem -pubout -out pub1040.pem
writing RSA key
$ openssl rsa -in rsa1048.pem -pubout -out pub1048.pem
writing RSA key
$ cat message.bin | openssl dgst -sha512 -sigopt rsa_padding_mode:pss -sigopt rsa_pss_saltlen:62 -verify pub1024.pem -signature valid1024.bin
Verified OK
$ cat message.bin | openssl dgst -sha512 -sigopt rsa_padding_mode:pss -sigopt rsa_pss_saltlen:63 -verify pub1032.pem -signature valid1032.bin
Verified OK
$ cat message.bin | openssl dgst -sha512 -sigopt rsa_padding_mode:pss -sigopt rsa_pss_saltlen:64 -verify pub1040.pem -signature valid1040.bin
Verified OK
$ cat message.bin | openssl dgst -sha512 -sigopt rsa_padding_mode:pss -sigopt rsa_pss_saltlen:64 -verify pub1048.pem -signature valid1048.bin
Verified OK
We've also added a new test that ensures we can properly validate a
RSASSA-PSS 1032-bit signature with SHA-512 generated by OpenSSL. This
has been added as the "RSASSA-PSS Verify OpenSSL-generated Signature
1032-bit w/SHA-512" test. The signature to verify was generated with the
following command line.
$ cat message.bin | openssl dgst -sha512 -sigopt rsa_padding_mode:pss -sigopt rsa_pss_saltlen:63 -sign rsa1032.pem > valid.bin
The RSA private keys used by these tests were generated with OpenSSL
1.1.1-pre8.
$ openssl genrsa 1024
Generating RSA private key, 1024 bit long modulus (2 primes)
........................................++++++
......++++++
e is 65537 (0x010001)
-----BEGIN RSA PRIVATE KEY-----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-----END RSA PRIVATE KEY-----
$ openssl genrsa 1032
Generating RSA private key, 1032 bit long modulus (2 primes)
....................++++++
.................................++++++
e is 65537 (0x010001)
-----BEGIN RSA PRIVATE KEY-----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-----END RSA PRIVATE KEY-----
$ openssl genkey 1040
Generating RSA private key, 1040 bit long modulus
........++++++
........++++++
e is 65537 (0x10001)
-----BEGIN RSA PRIVATE KEY-----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-----END RSA PRIVATE KEY-----
$ openssl genrsa 1048
Generating RSA private key, 1048 bit long modulus (2 primes)
...............................++++++
.++++++
e is 65537 (0x010001)
-----BEGIN RSA PRIVATE KEY-----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-----END RSA PRIVATE KEY-----
It should be valid to RSASSA-PSS sign a SHA-512 hash with a 1024-bit or
1032-bit RSA key, but with the salt size being always equal to the hash
size, this isn't possible: the key is too small.
To enable use of hashes that are relatively large compared to the key
size, allow reducing the salt size to no less than the hash size minus 2
bytes. We don't allow salt sizes smaller than the hash size minus 2
bytes because that too significantly changes the security guarantees the
library provides compared to the previous implementation which always
used a salt size equal to the hash size. The new calculated salt size
remains compliant with FIPS 186-4.
We also need to update the "hash too large" test, since we now reduce
the salt size when certain key sizes are used. We used to not support
1024-bit keys with SHA-512, but now we support this by reducing the salt
size to 62. Update the "hash too large" test to use a 1016-bit RSA key
with SHA-512, which still has too large of a hash because we will not
reduce the salt size further than 2 bytes shorter than the hash size.
The RSA private key used for the test was generated using "openssl
genrsa 1016" using OpenSSL 1.1.1-pre8.
$ openssl genrsa 1016
Generating RSA private key, 1016 bit long modulus (2 primes)
..............++++++
....++++++
e is 65537 (0x010001)
-----BEGIN RSA PRIVATE KEY-----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-----END RSA PRIVATE KEY-----
Yotta is no longer supported by Mbed TLS, so has been removed. Specifically, the
following changes have been made:
* references to yotta have been removed from the main readme and build
instructions
* the yotta module directory and build script has been removed
* yotta has been removed from test scripts such as all.sh and check-names.sh
* yotta has been removed from other files that that referenced it such as the
doxyfile and the bn_mul.h header
* yotta specific configurations and references have been removed from config.h
Setting the dh_flag to 1 used to indicate that the caller requests safe
primes from mbedtls_mpi_gen_prime. We generalize the functionality to
make room for more flags in that parameter.
* development-restricted: (578 commits)
Update library version number to 2.13.1
Don't define _POSIX_C_SOURCE in header file
Don't declare and define gmtime()-mutex on Windows platforms
Correct preprocessor guards determining use of gmtime()
Correct documentation of mbedtls_platform_gmtime_r()
Correct typo in documentation of mbedtls_platform_gmtime_r()
Correct POSIX version check to determine presence of gmtime_r()
Improve documentation of mbedtls_platform_gmtime_r()
platform_utils.{c/h} -> platform_util.{c/h}
Don't include platform_time.h if !MBEDTLS_HAVE_TIME
Improve wording of documentation of MBEDTLS_PLATFORM_GMTIME_R_ALT
Fix typo in documentation of MBEDTLS_PLATFORM_GMTIME_R_ALT
Replace 'thread safe' by 'thread-safe' in the documentation
Improve documentation of MBEDTLS_HAVE_TIME_DATE
ChangeLog: Add missing renamings gmtime -> gmtime_r
Improve documentation of MBEDTLS_HAVE_TIME_DATE
Minor documentation improvements
Style: Add missing period in documentation in threading.h
Rename mbedtls_platform_gmtime() to mbedtls_platform_gmtime_r()
Guard decl and use of gmtime mutex by HAVE_TIME_DATE and !GMTIME_ALT
...
While these tests and the issue with it are pre-existing:
- we previously didn't understand that the issue was an openssl bug
- failures seem to have become more frequent since the recent changes
So let's disable these fragile tests in order to get a clean CI. We still have
the tests against gnutls-serv for interop testing.
While making the initial commit, I thought $OPENSSL_LEGACY was not affect by
this bug, but it turns out I was wrong. All versions of OpenSSL installed on
the CI are. Therefore, the corresponding tests are disabled for the same
reason as the gnutls-cli tests above it.
This commit is only about the tests that were added in the recent
fragmentation work. One of those two tests had a particularly
annoying mode of failure: it failed consistently with seed=1 (use in the
release version of all.sh), once #1951 was applied. This has nothing
particular to do with #1951, except that by changing retransmission behaviour
1951 made the proxy run into a path that triggered the OpenSSL bug with this
seed, while it previously did that only with other seeds.
Other 3d interop test are also susceptible to triggering this OpenSSL bug or
others (or bugs in GnuTLS), but they are left untouched by this commit as:
- they were pre-existing to the recent DTLS branches;
- they don't seem to have the particularly annoying seed=1 mode of failure.
However it's probably desirable to do something about them at some point in
the future.
previously a single function was used for most test cases (ctr_drbg_validate) making it harder to understand what the exact scenario is as a result it was split into easier to understand functions.
the testing functions were re-factored so that the common code was extracted to a single static function (removing the need for unclear goto statements).
As part of the re-factor the test functions now use data_t for parameters (support for this was introduced in previous rebase),
the change is designed to make configuring 128bit keys for ctr_drbg more similar to other configuration options. Tests have been updated accordingly.
also clarified test naming.
This commit adds a test to ssl-opt.sh which exercises the behavior
of the library in the situation where a single proper fragment
of a future handshake message is received prior to the next
expected handshake message (concretely, the client receives
the first fragment of the server's Certificate message prior
to the server's ServerHello).
This commit adds two builds to all.sh which use a value of
MBEDTLS_SSL_DTLS_MAX_BUFFERING that allows to run the
reordering tests in ssl-opt.sh introduced in the last commit.
This commit adds tests to ssl-opt.sh which trigger code-paths
responsible for freeing future buffered messages when the buffering
limitations set by MBEDTLS_SSL_DTLS_MAX_BUFFERING don't allow the
next expected message to be reassembled.
These tests only work for very specific ranges of
MBEDTLS_SSL_DTLS_MAX_BUFFERING and will therefore be skipped
on a run of ssl-opt.sh in ordinary configurations.
This commit adds functions requires_config_value_at_most()
and requires_config_value_at_least() which can be used to
only run tests when a numerical value from config.h
(e.g. MBEDTLS_SSL_IN_CONTENT_LEN) is within a certain range.
The negotiated MFL is always the one suggested by the client, even
if the server has a smaller MFL configured locally. Hence, in the test
where the client asks for an MFL of 4096 bytes while the server locally
has an MFL of 512 bytes configured, the client will still send datagrams
of up to ~4K size.
Depending on the settings of the local machine, gnutls-cli will either try
IPv4 or IPv6 when trying to connect to localhost. With TLS, whatever it tries
first, it will notice if any failure happens and try the other protocol if
necessary. With DTLS it can't do that. Unfortunately for now there isn't
really any good way to specify an address and hostname independently, though
that might come soon: https://gitlab.com/gnutls/gnutls/issues/344
A work around is to specify an address directly and then use --insecure to
ignore certificate hostname mismatch; that is OK for tests that are completely
unrelated to certificate verification (such as the recent fragmenting tests)
but unacceptable for others.
For that reason, don't specify a default hostname for gnutls-cli, but instead
let each test choose between `--insecure 127.0.0.1` and `localhost` (or
`--insecure '::1'` if desired).
Alternatives include:
- having test certificates with 127.0.0.1 as the hostname, but having an IP as
the CN is unusual, and we would need to change our test certs;
- have our server open two sockets under the hood and listen on both IPv4 and
IPv6 (that's what gnutls-serv does, and IMO it's a good thing) but that
obviously requires development and testing (esp. for windows compatibility)
- wait for a newer version of GnuTLS to be released, install it on the CI and
developer machines, and use that in all tests - quite satisfying but can't
be done now (and puts stronger requirements on test environment).
From Hanno:
When a server replies to a cookieless ClientHello with a HelloVerifyRequest,
it is supposed to reset the connection and wait for a subsequent ClientHello
which includes the cookie from the HelloVerifyRequest.
In testing environments, it might happen that the reset of the server
takes longer than for the client to replying to the HelloVerifyRequest
with the ClientHello+Cookie. In this case, the ClientHello gets lost
and the client will need retransmit. This may happen even if the underlying
datagram transport is reliable.
This commit continues commit 47db877 by removing resend guards in the
ssl-opt.sh tests 'DTLS fragmenting: proxy MTU, XXX' which sometimes made
the tests fail in case the log showed a resend from the client.
See 47db877 for more information.
Unify the three existing validation functions (with prediction
resistance, with manual reseeding between generations, and with no
reseeding) into a single function that supports these three scenarios
plus a fourth one (reseed before the first generation).
The four supported scenarios cover the three scenarios from the
current CAVP test vectors (no reseed, reseed before generating,
prediction resistance) plus a fourth scenario used by the existing
test vectors (reseed after generating).
(cherry picked from commit cee9bedee6bc1a8e2b22fa8a31647b62ebb8a0a4)
The ctr_drbg_validate_xxx test functions had hard-coded sizes for the
entropy and the output size. Generalize the sizes.
Keep track of the current entropy size.
Unhexify the expected output and compare with the actual output,
rather than hexifying the actual output and comparing the hex.
When a server replies to a cookieless ClientHello with a HelloVerifyRequest,
it is supposed to reset the connection and wait for a subsequent ClientHello
which includes the cookie from the HelloVerifyRequest.
In testing environments, it might happen that the reset of the server
takes longer than for the client to replying to the HelloVerifyRequest
with the ClientHello+Cookie. In this case, the ClientHello gets lost
and the client will need retransmit. This may happen even if the underlying
datagram transport is reliable.
This commit removes a guard in the ssl-opt.sh test
'DTLS fragmenting: proxy MTU, resumed handshake' which made
the test fail in case the log showed a resend from the client.
We previously observed random-looking failures from this test. I think they
were caused by a race condition where the client tries to reconnect while the
server is still closing the connection and has not yet returned to an
accepting state. In that case, the server would fail to see and reply to the
ClientHello, and the client would have to resend it.
I believe logs of failing runs are compatible with this interpretation:
- the proxy logs show the new ClientHello and the server's closing Alert are
sent the same millisecond.
- the client logs show the server's closing Alert is received after the new
handshake has been started (discarding message from wrong epoch).
The attempted fix is for the client to wait a bit before reconnecting, which
should vastly enhance the probability of the server reaching its accepting
state before the client tries to reconnect. The value of 1 second is arbitrary
but should be more than enough even on loaded machines.
The test was run locally 100 times in a row on a slightly loaded machine (an
instance of all.sh running in parallel) without any failure after this fix.
Use the same values as other 3d tests: this makes the test hopefully a bit
faster than the default values, while not increasing the failure rate.
While at it:
- adjust "needs_more_time" setting for 3d interop tests (we can't set the
timeout values for other implementations, so the test might be slow)
- fix some supposedly DTLS 1.0 test that were using dtls1_2 on the command
line
Now that the UDP proxy has the ability to delay specific
handshake message on the client and server side, use
this to rewrite the reordering tests and thereby make
them independent on the choice of PRNG used by the proxy
(which is not stable across platforms).
This commit adds four tests to ssl-opt.sh running default
DTLS client and server with and without datagram packing
enabled, and checking that datagram packing is / is not
used by inspecting the debug output.
The UDP proxy does currently not dissect datagrams into records,
an hence the coverage of the reordering, package loss and duplication
tests is much smaller if datagram packing is in use.
This commit disables datagram packing for most UDP proxy tests,
in particular all 3D (drop, duplicate, delay) tests.
Now that datagram packing can be dynamically configured,
the test exercising the behavior of Mbed TLS when facing
an out-of-order CCS message can be re-introduced, disabling
datagram packing for the sender of the delayed CCS.
The tests "DTLS fragmenting: none (for reference)" and
"DTLS fragmenting: none (for reference) (MTU)" used a
maximum fragment length resp. MTU value of 2048 which
was meant to be large enough so that fragmentation
of the certificate message would not be necessary.
However, it is not large enough to hold the entire flight
to which the certificate belongs, and hence there will
be fragmentation as soon as datagram packing is used.
This commit increases the maximum fragment length resp.
MTU values to 4096 bytes to ensure that even with datagram
packing in place, no fragmentation is necessary.
A similar change was made in "DTLS fragmenting: client (MTU)".
The test exercising a delayed CCS message is not
expected to work when datagram packing is used,
as the current UDP proxy is not able to recognize
records which are not at the beginning of a
datagram.
Adds a requirement for GNUTLS_NEXT (3.5.3 or above, in practice we should
install 3.6.3) on the CI.
See internal ref IOTSSL-2401 for analysis of the bugs and their impact on the
tests.
For now, just check that it causes us to fragment. More tests are coming in
follow-up commits to ensure we respect the exact value set, including when
renegotiating.
Note: no interop tests in ssl-opt.sh for now, as some of them make us run into
bugs in (the CI's default versions of) OpenSSL and GnuTLS, so interop tests
will be added later once the situation is clarified. <- TODO
