This article explains how to search For encrypted text in QR-code electronic signatures in the document metadata. This topic contains example of standard encryption usage and searching For encrypted text in the QR-code electronic signature with further decryption by GroupDocs.Signature API.... This article explains how to search for encrypted text in QR-code electronic signatures in the document metadata. This topic contains example of standard encryption usage and searching for encrypted text in the QR-code electronic signature with further decryption by GroupDocs.Signature API.