mbedtls: add support for pkcs7
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>
diff --git a/library/Makefile b/library/Makefile
index 85cea6b..a780267 100644
--- a/library/Makefile
+++ b/library/Makefile
@@ -165,6 +165,7 @@
x509_csr.o \
x509write_crt.o \
x509write_csr.o \
+ pkcs7.o \
# This line is intentionally left blank
OBJS_TLS= \