This commit adds test for the new library function mbedtls_rsa_check_params for
checking a set of RSA core parameters. There are some toy example tests with
small numbers that can be verified by hand, as well as tests with real world
numbers. Complete, partial and corrupted data are tested, as well the check for
primality exactly if a PRNG is provided.
This commit adds tests for the new library function mbedtls_rsa_export_raw.
Each test case performs the following steps:
- Parse and convert a set of hex-string decoded core RSA parameters into big
endian byte arrays.
- Use these to initialize an RSA context
- Export core RSA parameters as byte arrays again afterwards
- Compare byte strings.
Each test split is performed twice, once with successive and once with
simultaneous exporting.
This commit adds tests for the new library function mbedtls_rsa_export. Each
test case performs the following steps:
- Parse and convert a set of hex-string decoded core RSA parameters into MPI's.
- Use these to initialize an RSA context
- Export core RSA parameters as MPI's again afterwards
- Compare initial MPI's to exported ones.
In the private key case, all core parameters are exported and sanity-checked,
regardless of whether they were also used during setup.
Each test split is performed twice, once with successive and once with
simultaneous exporting.
This commit adds numerous tests for the new library functions mbedtls_rsa_import
and mbedtls_rsa_import_raw in conjunction with mbedtls_rsa_complete for
importing and completing core sets of core RSA parameters (N,P,Q,D,E) into an
RSA context, with the importing accepting either MPI's or raw big endian
buffers.
Each test is determined by the following parameters:
1) Set of parameters provided
We're testing full sets (N,P,Q,D,E), partial sets (N,-,-,D,E) and (N,P,Q,-,E)
that are sufficient to generate missing parameters, and the partial and
insufficient set (N, -, Q, -, E).
2) Simultaenous or successive importing
The functions rsa_import and rsa_import_raw accept importing parameters at
once or one after another. We test both.
3) Sanity of parameters
This commit adds test for the new library function mbedtls_rsa_deduce_moduli for
deducing the prime factors (P,Q) of an RSA modulus N from knowledge of a
pair (D,E) of public and private exponent:
- Two toy examples that can be checked by hand, one fine and with bad parameters.
- Two real world examples, one fine and one with bad parameters.
This commit adds tests for the new library function mbedtls_rsa_deduce_private
for deducing the private RSA exponent D from the public exponent E and the
factorization (P,Q) of the RSA modulus:
- Two toy examples with small numbers that can be checked by hand, one
working fine and another failing due to bad parameters.
- Two real world examples, one fine and one with bad parameters.
The tests only work for a specific number for MBEDTLS_X509_MAX_INTERMEDIATE_CA
so the check has been changed to confirm the default value, and to show an error
otherwise.
The test for MBEDTLS_NO_UDBL_DIVISION wasn't preserving it's own config.h
for the next test.
Also added comments to ARM Compiler 6 tests to better explain them.
The X509 test suite assumes that MBEDTLS_X509_MAX_INTERMEDIATE_CA is below the
hardcoded threshold 20 used in the long certificate chain generating script
tests/data_files/dir-max/long.sh. This commit adds a compile-time check for
that.
Some tests in ssl-opt.sh assumes the value 8 for the maximal number
MBEDTLS_X509_MAX_INTERMEDIATE_CA of intermediate CA's. This commit adds a check
before conducting the respective tests.
The RSA key generation test needs strong entropy to succeed. This commit captures the presence of a strong entropy
source in a preprocessor flag and only runs the key generation test if that flag is set.
The test for MBEDTLS_NO_UDBL_DIVISION wasn't preserving it's own config.h
for the next test.
Also added comments to ARM Compiler 6 tests to better explain them.
The entropy test suite uses a negative dependency "depends_on:!CONFIG_FLAG" for one of its tests. This kind of
dependency (running a test only if some configuration flag is not defined) is currently not supported and instead
results in the respective test case being dropped.
This commit adds support for negative dependencies in test cases.
The function `mbedtls_rsa_gen_key` from `test_suite_rsa.function` initialized a stack allocated RSA context only after
seeding the CTR DRBG. If the latter operation failed, the cleanup code tried to free the uninitialized RSA context,
potentially resulting in a segmentation fault. Fixes one aspect of #1023.
If we didn't walk the whole chain, then there may be any kind of errors in the
part of the chain we didn't check, so setting all flags looks like the safe
thing to do.
Inspired by test code provided by Nicholas Wilson in PR #351.
The test will fail if someone sets MAX_INTERMEDIATE_CA to a value larger than
18 (default is 8), which is hopefully unlikely and can easily be fixed by
running long.sh again with a larger value if it ever happens.
Current behaviour is suboptimal as flags are not set, but currently the goal
is only to document/test existing behaviour.
This commit adds four tests to tests/ssl-opt.sh:
(1) & (2): Check behaviour of optional/required verification when the
trusted CA chain is empty.
(3) & (4): Check behaviour of optional/required verification when the
client receives a server certificate with an unsupported curve.
* gilles/IOTSSL-1330/development:
Changelog entry for the bug fixes
SSLv3: when refusing renegotiation, stop processing
Ignore failures when sending fatal alerts
Cleaned up double variable declaration
Code portability fix
Added changelog entry
Send TLS alerts in many more cases
Skip all non-executables in run-test-suites.pl
SSL tests: server requires auth, client has no certificate
Balanced braces across preprocessor conditionals
Support setting the ports on the command line
By default, keep allowing SHA-1 in key exchange signatures. Disabling
it causes compatibility issues, especially with clients that use
TLS1.2 but don't send the signature_algorithms extension.
SHA-1 is forbidden in certificates by default, since it's vulnerable
to offline collision-based attacks.
There is now one test case to validate that SHA-1 is rejected in
certificates by default, and one test case to validate that SHA-1 is
supported if MBEDTLS_TLS_DEFAULT_ALLOW_SHA1 is #defined.
SHA-1 is now disabled by default in the X.509 layer. Explicitly enable
it in our tests for now. Updating all the test data to SHA-256 should
be done over time.
With SHA-1 deprecation, we need a few certificates using algorithms in
the default support list. Most tests still use SHA-1 though.
The generation process for the new certificates is recorded in the makefile.
The ECJPAKE test suite uses a size zero array for the empty password
used in the tests, which is not valid C. This commit fixes this.
This originally showed up as a compilation failure on Visual Studio
2015, documented in IOTSSL-1242, but can also be observed with GCC
when using the -Wpedantic compilation option.
Fixed a bug in ssl_srv.c when parsing TLS_FALLBACK_SCSV in the
ciphersuite list that caused it to miss it sometimes. Reported by Hugo
Leisink as issue #810. Fix initially by @andreasag01; this commit
isolates the bug fix and adds a non-regression test.
Modify tests/scripts/check-doxy-blocks.pl to ensure that:
* It can only be run from the mbed TLS root directory.
* An error code is returned to the environment when a potential error
in the source code is found.
The test case was generated by modifying our signature code so that it
produces a 7-byte long padding (which also means garbage at the end, so it is
essential in to check that the error that is detected first is indeed the
padding rather than the final length check).
The modular inversion function hangs when provided with the modulus 1. This commit refuses this modulus with a BAD_INPUT error code. It also adds a test for this case.
The TLS client and server code was usually closing the connection in
case of a fatal error without sending an alert. This commit adds
alerts in many cases.
Added one test case to detect that we send the alert, where a server
complains that the client's certificate is from an unknown CA (case
tracked internally as IOTSSL-1330).
Added command line arguments --port and --proxy-port to choose the
ports explicitly instead of deriving them from the PID. This
facilitates debugging e.g. with Wireshark.
Fix a buffer overflow when writting a string representation of an MPI
number to a buffer in hexadecimal. The problem occurs because hex
digits are written in pairs and this is not accounted for in the
calculation of the required buffer size when the number of digits is
odd.
The first three test cases from test_suites_pkparse.data failed because
the key file they read requires DES to be read. However, MBEDTLS_DES_C
was missing from the dependency list.
This curve has special arithmetic on 64 bit platforms and an untested
path lead to trying to free a buffer on the stack.
For the sake of completeness, a test case for a point with non-affine
coordinates has been added as well.
Fixes a regression introduced by an earlier commit that modified
x509_crt_verify_top() to ensure that valid certificates that are after past or
future valid in the chain are processed. However the change introduced a change
in behaviour that caused the verification flags MBEDTLS_X509_BADCERT_EXPIRED and
MBEDTLS_BADCERT_FUTURE to always be set whenever there is a failure in the
verification regardless of the cause.
The fix maintains both behaviours:
* Ensure that valid certificates after future and past are verified
* Ensure that the correct verification flags are set.
Modifies the function mbedtls_x509_crl_parse() to ensure that a CRL in PEM
format with trailing characters after the footer does not result in the
execution of an infinite loop.
Fix potential integer overflows in the following functions:
* mbedtls_md2_update() to be bypassed and cause
* mbedtls_cipher_update()
* mbedtls_ctr_drbg_reseed()
This overflows would mainly be exploitable in 32-bit systems and could
cause buffer bound checks to be bypassed.
Add a test to ssl-opt.sh to ensure that in DTLS a 6 byte record counter
is compared in ssl_check_ctr_renegotiate() instead of a 8 byte one as in
the TLS case. Because currently there are no testing facilities to check
that renegotiation routines are triggered after X number of input/output
messages, the test consists on setting a renegotiation period that
cannot be represented in 6 bytes, but whose least-significant byte is 2.
If the library behaves correctly, the renegotiation routines will be
executed after two exchanged.
Fixes strict C99 builds in all.sh with glibc version >2.19 where platform support
wasn't being compiled in automatically.
Also fixes C99 syntax with armclang.
Changes use of mklink in Windows test builds, to create junctions instead of
directory symbolic links. This removes the need for an elevated command prompt
when running cmake to create the Visual Studio project files.
Tighten up the test options in all.sh, test-ref-configs.pl and curves.pl
to ensure the builds are strict for all warnings, warnings are treated
as errors, and that wherever possible builds are strict to the C99
standard. (Note that builds that use the Unix sockets API cannot be).
Modify the script at tests/scripts/all.sh to export the variable
MAKEFLAGS with -j if it was not set before. This should decrease the
total runtime of tests/scripts/all.sh by letting make run multiple jobs
in parallel. Also, add a check at the top of the script to cause a
failure if the environment is not Linux.
Fix potential integer overflows in the following functions:
* mbedtls_md2_update() to be bypassed and cause
* mbedtls_cipher_update()
* mbedtls_ctr_drbg_reseed()
This overflows would mainly be exploitable in 32-bit systems and could
cause buffer bound checks to be bypassed.
Fix an incorrect condition in ssl_check_ctr_renegotiate() that compared
64 bits of record counter instead of 48 bits as described in RFC 6347
Section 4.3.1. This would cause the function's return value to be
occasionally incorrect and the renegotiation routines to be triggered
at unexpected times.
The tests load certificate chains from files. The CA chains contain a
past or future certificate and an invalid certificate. The test then
checks that the flags set are MBEDTLS_X509_BADCERT_EXPIRED or
MBEDTLS_X509_BADCERT_FUTURE.
Add a test to ssl-opt.sh to ensure that in DTLS a 6 byte record counter
is compared in ssl_check_ctr_renegotiate() instead of a 8 byte one as in
the TLS case. Because currently there are no testing facilities to check
that renegotiation routines are triggered after X number of input/output
messages, the test consists on setting a renegotiation period that
cannot be represented in 6 bytes, but whose least-significant byte is 2.
If the library behaves correctly, the renegotiation routines will be
executed after two exchanged.
Fixes strict C99 builds in all.sh with glibc version >2.19 where platform support
wasn't being compiled in automatically.
Also fixes C99 syntax with armclang.
Pull Request #533 - Use MAKEFLAGS to pass args to make in all.sh
Modify the script at tests/scripts/all.sh to export the variable
MAKEFLAGS with -j if it was not set before. This should decrease the
total runtime of tests/scripts/all.sh by letting make run multiple jobs
in parallel. Also, add a check at the top of the script to cause a
failure if the environment is not Linux.w
Changes use of mklink in Windows test builds, to create junctions instead of
directory symbolic links. This removes the need for an elevated command prompt
when running cmake to create the Visual Studio project files.
Tighten up the test options in all.sh, test-ref-configs.pl and curves.pl
to ensure the builds are strict for all warnings, warnings are treated
as errors, and that wherever possible builds are strict to the C99
standard. (Note that builds that use the Unix sockets API cannot be).
The PKCS#1 standard says nothing about the relation between P and Q
but many libraries guarantee P>Q and mbed TLS did so too in earlier
versions.
This commit restores this behaviour.
Fixes the test suites to consistently use mbedtls_fprintf to output to
stdout or stderr.
Also redirects output from the tests to /dev/null to avoid confusing
output if the test suite code or library outputs anything to stdout.
Minor fixes following review including:
* formatting changes including indentation and code style
* corrections
* removal of debug code
* clarification of code through variable renaming
* memory leak
* compiler warnings
