PdfPkcs7RsaSigner constructor

const PdfPkcs7RsaSigner({
  1. required Uint8List privateKey,
  2. required HashAlgorithm digest,
  3. List<X509> chain = const <X509>[],
  4. required X509 issuer,
  5. TimestampSignCallback? onTimestampSign,
})

Create a Pkcs7 RSA signer