This article explains how to search For embedded electronic signatures with custom encryption in QR-code electronic signatures. This topic contains example of custom encryption, class definition and search For encrypted objects in the QR-codes with GroupDocs.Signature.... This article explains how to search for embedded electronic signatures with custom encryption in QR-code electronic signatures. This topic contains example of custom encryption, class definition and search for encrypted objects in the QR-codes with GroupDocs.Signature.