Asn1BerDecodeBuffer dbuf = new Asn1BerDecodeBuffer(data);
        final ContentInfo all = new ContentInfo();
        try {
            all.decode(dbuf);
            dbuf.reset();
        } catch (Exception e) {
            throw new RuntimeException("Couldn't read input enveloped data.");
        }
        final EnvelopedData cms = (EnvelopedData) all.content;