David PHAM-VAN

Add encryption paragraph

@@ -92,3 +92,10 @@ To save the pdf file: @@ -92,3 +92,10 @@ To save the pdf file:
92 final file = File("example.pdf"); 92 final file = File("example.pdf");
93 await file.writeAsBytes(pdf.save()); 93 await file.writeAsBytes(pdf.save());
94 ``` 94 ```
  95 +
  96 +## Encryption and Digital Signature
  97 +
  98 +Encryption using RC4-40, RC4-128, AES-128, and AES-256 is fully supported using a separate library.
  99 +This library also provides SHA1 or SHA-256 Digital Signature using your x509 certificate. The graphic signature is represented by a clickable widget that shows Digital Signature information.
  100 +
  101 +Drop me an email for availability and more information.
@@ -133,3 +133,10 @@ To print an existing Pdf file from a Flutter asset: @@ -133,3 +133,10 @@ To print an existing Pdf file from a Flutter asset:
133 final pdf = await rootBundle.load('document.pdf'); 133 final pdf = await rootBundle.load('document.pdf');
134 await Printing.layoutPdf(onLayout: (_) => pdf.buffer.asUint8List()); 134 await Printing.layoutPdf(onLayout: (_) => pdf.buffer.asUint8List());
135 ``` 135 ```
  136 +
  137 +## Encryption and Digital Signature
  138 +
  139 +Encryption using RC4-40, RC4-128, AES-128, and AES-256 is fully supported using a separate library.
  140 +This library also provides SHA1 or SHA-256 Digital Signature using your x509 certificate. The graphic signature is represented by a clickable widget that shows Digital Signature information.
  141 +
  142 +Drop me an email for availability and more information.