The contentInfo field of PKCS7 Signed Data structures can
optionally contain the content of the signature. Per RFC 2315
it can also contain any of the PKCS7 data types. Add test and
comments making it clear that the current implementation
only supports the DATA content type and the data must be empty.
Return codes should be clear whether content was invalid or
unsupported.
Identification and fix provided by:
- Demi Marie Obenour <demiobenour@gmail.com>
- Dave Rodgman <dave.rodgman@arm.com>
Signed-off-by: Nick Child <nick.child@ibm.com>
If the digest algorithm is not compiled into Mbedtls,
then any pkcs7 structure which uses this algorithm
should fail with MBEDTLS_ERR_PKCS7_INVALID_ALG.
Add test for this case.
Signed-off-by: Nick Child <nick.child@ibm.com>
Previously, a loop in pkcs7_get_signers_info_set was not
getting covered by tests. This was because when there are
two or less signers, the loop will not execute.
Therefore, add new data files for another signer and use
three signers to generate a new pkcs7 DER file. Add a test
case to make sure that verification is still successfula and
use the test script to create ASN1 errors throoughout the
stucture:
./generate_pkcs7_tests.py ../data_files/pkcs7_data_3_signed.der
This results in the loop being executed.
Signed-off-by: Nick Child <nick.child@ibm.com>
Previously there were two test functions for verify.
One allowed for the verification of one certificate and
the other allowed for verification of two certificates.
Merge these two functions into one function that can take
any number of certificates as an argument.
Signed-off-by: Nick Child <nick.child@ibm.com>
Several PKCS7 invalid ASN1 Tests were failing due to extra
data bytes or incorrect content lengths going unnoticed. Make
the parser aware of possible malformed ASN1 data.
Signed-off-by: Nick Child <nick.child@ibm.com>
Add test calls to raw asn1 data with slight syntatical errors
Increases %branches covered from 70.4% to 87.7%.
Add a script which serves as documentation for how these new test
cases were generated:
./generate_pkcs7_tests.py ../data_files/pkcs7_data_cert_signed_sha256.der
./generate_pkcs7_tests.py ../data_files/pkcs7_data_multiple_signed.der
Signed-off-by: Nick Child <nick.child@ibm.com>
Add a test to verify a hash which uses a different digest
algorithm than the one specified in the pkcs7.
Signed-off-by: Nick Child <nick.child@ibm.com>
Previously the same test was repeated twice.
Signed-off-by: Demi Marie Obenour <demiobenour@gmail.com>
Signed-off-by: Bence Szépkúti <bence.szepkuti@arm.com>
In response to feedback[1], we can reuse much of the functions in
similar test cases by specifying some additional parameters.
Specifically, test cases which probe the functionality of
`mbedtls_pkcs7_parse_der` have all been merged into one test function.
Additionally, all test cases which examine the
`mbedtls_pkcs7_signed_data_verify` and `mbedtls_pkcs7_signed_hash_verify`
functions have been merged into two test functions (one for single and one
for multiple signers).
[1] https://github.com/Mbed-TLS/mbedtls/pull/3431#discussion_r953686780
Signed-off-by: Nick Child <nick.child@ibm.com>
Make `mbedtls_pkcs7_signed_hash_verify` loop over all signatures in the
PKCS7 structure and return success if any of them verify successfully.
Signed-off-by: Nick Child <nick.child@ibm.com>
Rather than only parsing/verifying one SignerInfo in the SignerInfos
field of the PKCS7 stucture, allow the ability to parse and verify more
than one signature. Verification will return success if any of the signatures
produce a match.
Signed-off-by: Daniel Axtens <dja@axtens.net>
Signed-off-by: Nick Child <nick.child@ibm.com>
Fixes include removing PEM dependency for greater
coverage when PEM config is not set and defining
test dependencies at the appropriate level.
Signed-off-by: Nick Child <nick.child@ibm.com>
OpenSSL provides APIs to generate only the signted data
format PKCS7 i.e. without content type OID. This patch
adds support to parse the data correctly even if formatted
only as signed data
Signed-off-by: Nayna Jain <nayna@linux.ibm.com>
PKCS7 signing format is used by OpenPOWER Key Management, which is
using mbedtls as its crypto library.
This patch adds the limited support of pkcs7 parser and verification
to the mbedtls. The limitations are:
* Only signed data is supported.
* CRLs are not currently handled.
* Single signer is supported.
Signed-off-by: Daniel Axtens <dja@axtens.net>
Signed-off-by: Eric Richter <erichte@linux.ibm.com>
Signed-off-by: Nayna Jain <nayna@linux.ibm.com>
