private void reEncrypt(Document doc, UnlockedKeySet ownerKeySet) {
try {
final byte[] body = doc.decryptBody(ownerKeySet);
doc.encryptAndSetBody(ownerKeySet, randomProvider.get(), body);
} catch (CryptographicException e) {
throw new RuntimeException(e);
}
}
@DELETE
@Transactional
public Response deleteLink(
@Context Credentials credentials,
@PathParam("user_id") String userId,
@PathParam("name") String name,
@PathParam("reader_id") String readerId) {
final Session session = credentials.buildSession(userDAO, userId);
final User reader = findUser(readerId);
final Document doc = findDocument(session.getUser(), name);
doc.unlinkUser(reader);
reEncrypt(doc, session.getKeySet());
documentDAO.saveOrUpdate(doc);
return Response.noContent().build();
}