/**
* EncryptedContentInfo ::= SEQUENCE { contentType ContentType, contentEncryptionAlgorithm
* ContentEncryptionAlgorithmIdentifier, encryptedContent [0] IMPLICIT EncryptedContent OPTIONAL }
*
* <p>EncryptedContent ::= OCTET STRING
*/
public static EncContent fromASN1(ASN1Encodable content) {
ASN1Sequence sequence = (ASN1Sequence) content;
ASN1ObjectIdentifier contentType = (ASN1ObjectIdentifier) (sequence.getObjectAt(0));
int nid = ASN1Registry.obj2nid(contentType);
EncContent ec = new EncContent();
ec.setContentType(nid);
ec.setAlgorithm(AlgorithmIdentifier.getInstance(sequence.getObjectAt(1)));
if (sequence.size() > 2
&& sequence.getObjectAt(2) instanceof ASN1TaggedObject
&& ((ASN1TaggedObject) (sequence.getObjectAt(2))).getTagNo() == 0) {
ASN1Encodable ee = ((ASN1TaggedObject) (sequence.getObjectAt(2))).getObject();
if (ee instanceof ASN1Sequence && ((ASN1Sequence) ee).size() > 0) {
ByteList combinedOctets = new ByteList();
Enumeration enm = ((ASN1Sequence) ee).getObjects();
while (enm.hasMoreElements()) {
byte[] octets = ((ASN1OctetString) enm.nextElement()).getOctets();
combinedOctets.append(octets);
}
ec.setEncData(new DEROctetString(combinedOctets.bytes()));
} else {
ec.setEncData((ASN1OctetString) ee);
}
}
return ec;
}
public ASN1Encodable asASN1() {
ASN1EncodableVector vector = new ASN1EncodableVector();
vector.add(ASN1Registry.nid2obj(contentType).toASN1Primitive());
vector.add(algorithm.toASN1Primitive());
if (encData != null) {
vector.add(new DERTaggedObject(false, 0, encData));
}
return new DLSequence(vector);
}
@Override
public String toString() {
return "#<EncContent contentType="
+ contentType
+ " algorithm="
+ (algorithm == null ? "null" : ASN1Registry.o2a(algorithm.getAlgorithm()))
+ " content="
+ encData
+ ">";
}
