Remove an unnecessary debug print (whoops).
Use new error code for when the x509 is expired.
When there are no signers return invalid certificate.
Signed-off-by: Nick Child <nick.child@ibm.com>
Co-authored-by: Dave Rodgman <dave.rodgman@arm.com>
Signed-off-by: Nick Child <nick.child@ibm.com>
Mbed TLS uses a two layer system for error codes. The least significant
7 bits should be used to signal low-level module errors. Since PKCS7 is
a high level module, it should leave these bits unassigned. To do this,
the least significant byte of PKCS7 error codes must either be 0x00 or
0x80.
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>