private IICType GetIICandIICSignature(RegisterInvoiceRequest invoiceRequest, X509Certificate2 certificate, string issuerTIN)
{
IICType iicType = null;
if (invoiceRequest.Signature != null)
{
throw new Exception("Invoice already signed");
}
if (invoiceRequest != null && invoiceRequest.Invoice.IIC == null &&
invoiceRequest.Invoice.IICSignature == null)
{
InvoiceType invoice = invoiceRequest.Invoice;
IICGenerator iicTypeGenerator = new IICGenerator(certificate);
IICConfig iicConfig = new IICConfig()
{
IssuerTIN = issuerTIN,
DateTimeCreated = invoice.IssueDateTime.ToString(Fiscalization.DATE_FORMAT_LONG),
InvoiceNumber = invoice.InvNum,
BusinUnitCode = invoice.BusinUnitCode,
TCRCode = invoice.TCRCode,
SoftCode = invoice.SoftCode,
TotalPrice = invoice.TotPrice.ToString()
};
iicType = iicTypeGenerator.Generate(iicConfig);
}
return(iicType);
}
public IICType Generate(IICConfig iicConfig)
{
IICValidator.ThrowExceptionIfNotValid(iicConfig);
var inputParameter = GetInputParameterForIIC(iicConfig);
// Load a private from a key store
RSA privateKey = _certificate.GetRSAPrivateKey();
IICType iicType = new IICType();
// Create IIC signature according to RSASSA-PKCS-v1_5
byte[] iicSignature = privateKey.SignData(Encoding.ASCII.GetBytes(inputParameter),
HashAlgorithmName.SHA256, RSASignaturePadding.Pkcs1);
iicType.IICSignature = BitConverter.ToString(iicSignature).Replace("-", string.Empty);
// Hash IIC signature with MD5 to create IIC
byte[] iic = ((HashAlgorithm)CryptoConfig.CreateFromName("MD5")).ComputeHash(iicSignature);
iicType.IIC = BitConverter.ToString(iic).Replace("-", string.Empty);
return(iicType);
}
