NativeCrypto: empty data content for PKCS7 container

The EncapsulatedContentInfo must be present in the output, but OpenSSL
will fill in a zero-length OID if you don't call PKCS7_set_content on the
outer PKCS7 container. So we construct an empty PKCS7 data container and
set it as the content. This fixes the invalid PKCS7 output.

(cherry picked from commit 525df9b12c1eb77db9f1b2b8fa5d41f779b9afa6)

Bug: 18664989
Change-Id: I6f4cf785dd02ee40f1951d098fa987aa25d2421a
1 file changed
tree: 91193334922b05a52c6793dbffb625bf6110517a
  2. build.gradle
  3. jarjar-rules.txt
  4. src/