public static SignedDGC VerifyData(String codeData)
{
try {
// The base45 encoded data shoudl begin with HC1
if (codeData.StartsWith("HC1:"))
{
string base45CodedData = codeData.Substring(4);
// Base 45 decode data
byte[] base45DecodedData = Base45Decoding(Encoding.GetEncoding("UTF-8").GetBytes(base45CodedData));
// zlib decompression
byte[] uncompressedData = ZlibDecompression(base45DecodedData);
SignedDGC vacProof = new SignedDGC();
// Sign and encrypt data
byte[] signedData = VerifySignedData(uncompressedData, vacProof);
// Get json from CBOR representation of ProofCode
EU_DGC eU_DGC = GetVaccinationProofFromCbor(signedData);
vacProof.Dgc = eU_DGC;
return(vacProof);
}
}
catch (Exception e)
{
Console.WriteLine(e.ToString());
throw e;
}
return(null);
}
protected static byte[] VerifySignedData(byte[] signedData, SignedDGC vacProof)
{
DGCVerifier verifier = new DGCVerifier(App.CertificateManager);
return(verifier.Verify(signedData, vacProof));
}
protected static byte[] VerifySignedData(byte[] signedData, SignedDGC vacProof)
{
DGCVerifier verifier = new DGCVerifier(new CertificateProvider());
return(verifier.Verify(signedData, vacProof));
}