public void VerifyExtendedSignatureUsingDefaultPolicy()
{
// Create simple wrapper.
KSI.Ksi ksi = GetKsi();
// Read the existing signature, assume it is extended
IKsiSignature signature = LoadExtendedSignature();
DataHash documentHash = KsiProvider.CreateDataHasher(signature.InputHash.Algorithm)
.AddData(File.ReadAllBytes("Resources/infile.txt"))
.GetHash();
// Do the verification and check the result.
// The signature is verified against given document hash and publications file (publications file is automatically downloaded by simple wrapper).
VerificationResult verificationResult = ksi.Verify(signature, documentHash);
if (verificationResult.ResultCode == VerificationResultCode.Ok)
{
Console.WriteLine("VerifyExtendedSignatureUsingDefaultPolicy > signature valid");
}
else
{
Console.WriteLine("VerifyExtendedSignatureUsingDefaultPolicy > verification failed with error > " + verificationResult.VerificationError);
}
}
public void VerifyUnextendedSignatureUsingDefaultPolicy()
{
// Create simple wrapper.
KSI.Ksi ksi = GetKsi();
// Read signature, assume to be not extended
IKsiSignature signature = LoadUnextendedSignature();
// We need to compute the hash from the original data, to make sure it
// matches the one in the signature and has not been changed
// Use the same algorithm as the input hash in the signature
DataHash documentHash = KsiProvider.CreateDataHasher(signature.InputHash.Algorithm)
.AddData(File.ReadAllBytes("Resources/infile.txt"))
.GetHash();
// Do the verification and check the result.
// At first KSI signature is verified against given document hash.
// Then the signature is extended. If extending succeeds then the signature is verified
// against publications file (publications file is automatically downloaded by simple wrapper).
// If extending is not yet possible then key based verification is done.
VerificationResult verificationResult = ksi.Verify(signature, documentHash);
if (verificationResult.ResultCode == VerificationResultCode.Ok)
{
Console.WriteLine("VerifyUnextendedSignatureUsingDefaultPolicy > signature valid");
}
else
{
Console.WriteLine("VerifyUnextendedSignatureUsingDefaultPolicy > verification failed with error > " + verificationResult.VerificationError);
}
}
