encryptedContent data in EncryptedContentInfo should be encoded as "implicit" not "explicit" #84
Description
The encryptedContent field in EncryptedContentInfo is "implicit" according to the rfc (https://www.rfc-editor.org/rfc/rfc5652).
EncryptedContentInfo ::= SEQUENCE {
contentType ContentType,
contentEncryptionAlgorithm ContentEncryptionAlgorithmIdentifier,
encryptedContent [0] IMPLICIT EncryptedContent OPTIONAL }
However, marshalEncryptedContent() is emitting encryptedContent as EXPLICIT and it can't be parsed by strict parsers.