CI was failing due to the return value of mbedtls_md being ignored.
If this function does fail, return early and propogate the md error.
Signed-off-by: Nick Child <nick.child@ibm.com>
The function `pkcs7_asn1_get_tag` should return an update pointer only
on success. Currently, the pointer is being updated on a failure case.
This commit resets *p to start if the first call to
mbedtls_asn1_get_tag fails.
Signed-off-by: Daniel Axtens <dja@axtens.net>
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>
