iTextSharp.text.pdf.PdfPKCS7.GetAuthenticatedAttributeSet C# (CSharp) Метод

        private DerSet GetAuthenticatedAttributeSet(byte[] secondDigest, DateTime signingTime, byte[] ocsp) {
            Asn1EncodableVector attribute = new Asn1EncodableVector();
            Asn1EncodableVector v = new Asn1EncodableVector();
            v.Add(new DerObjectIdentifier(ID_CONTENT_TYPE));
            v.Add(new DerSet(new DerObjectIdentifier(ID_PKCS7_DATA)));
            attribute.Add(new DerSequence(v));
            v = new Asn1EncodableVector();
            v.Add(new DerObjectIdentifier(ID_SIGNING_TIME));
            v.Add(new DerSet(new DerUtcTime(signingTime)));
            attribute.Add(new DerSequence(v));
            v = new Asn1EncodableVector();
            v.Add(new DerObjectIdentifier(ID_MESSAGE_DIGEST));
            v.Add(new DerSet(new DerOctetString(secondDigest)));
            attribute.Add(new DerSequence(v));
            if (ocsp != null) {
                v = new Asn1EncodableVector();
                v.Add(new DerObjectIdentifier(ID_ADBE_REVOCATION));
                DerOctetString doctet = new DerOctetString(ocsp);
                Asn1EncodableVector vo1 = new Asn1EncodableVector();
                Asn1EncodableVector v2 = new Asn1EncodableVector();
                v2.Add(OcspObjectIdentifiers.PkixOcspBasic);
                v2.Add(doctet);
                DerEnumerated den = new DerEnumerated(0);
                Asn1EncodableVector v3 = new Asn1EncodableVector();
                v3.Add(den);
                v3.Add(new DerTaggedObject(true, 0, new DerSequence(v2)));
                vo1.Add(new DerSequence(v3));
                v.Add(new DerSet(new DerSequence(new DerTaggedObject(true, 1, new DerSequence(vo1)))));
                attribute.Add(new DerSequence(v));
            }
            return new DerSet(attribute);
        }