/// <summary>
/// Initializes a new instance.
/// </summary>
/// <param name="model">Card DGI model.</param>
/// <param name="data">Card data.</param>
/// <param name="issuerContext"></param>
/// <param name="iccContext"></param>
public DgiBuilder(EmvPersonalizationModel model, EmvPersonalizationData data, EmvIssuerContext issuerContext, EmvIccContext iccContext)
{
this.data = data;
this.model = model;
this.issuerContext = issuerContext;
this.iccContext = iccContext;
}
void ComputeIssuerContext()
{
var caModulusLength = new BigInteger(caPrivateKey.Modulus, 16).BitLength / 8;
var issuerPublicKey = certificateData.IssuerPrivateKey.GetPublicKey();
var issuerModulusLength = new BigInteger(issuerPublicKey.Modulus, 16).BitLength / 8;
var issuerPublicKeyCertificate = new IssuerPublicKeyCertificate
{
HashAlgorithmIndicator = certificateData.HashAlgorithmIndicator.FromHexa().First(),
IssuerIdentifier = certificateData.IssuerIdentifier.FromHexa(),
CertificateExpirationDate = certificateData.ExpirationDate.FromHexa(),
CertificateSerialNumber = certificateData.SerialNumber.FromHexa(),
PublicKeyAlgorithmIndicator = certificateData.PublicKeyAlgorithmIndicator.FromHexa().First(),
IssuerPublicKey = issuerPublicKey
};
IssuerContext = new EmvIssuerContext()
{
CaPublicKeyIndex = certificateData.CaPublicKeyIndex,
IssuerPrivateKey = certificateData.IssuerPrivateKey
};
// 90 Issuer Public Key Certificate (Nca)
IssuerContext.IssuerPublicKeyCertificate = issuerPublicKeyCertificate.GenerateCertificate(caPrivateKey.GetPrivateKey()).ToHexa();
// 92 Issuer Public Key Remainder (Ni-Nca+36)
if (issuerModulusLength > caModulusLength - 36)
{
IssuerContext.IssuerPublicKeyRemainder = issuerPublicKey.Modulus.FromHexa().Skip(caModulusLength - 36).ToArray().ToHexa();
}
// 9F32 Issuer Public Key Exponent (1 or 3)
IssuerContext.IssuerPrivateKey.PublicExponent = issuerPublicKey.Exponent.FromHexa().ToHexa();
}
public void BuildTlvData_Partial()
{
var emvIssuerContext = new EmvIssuerContext();
emvIssuerContext.CaPublicKeyIndex = "01";
var tlv = emvIssuerContext.BuildTlvData();
Assert.AreEqual(1, tlv.Count);
Assert.AreEqual("8F 01 01", tlv[0].ToByteArray().ToHexa());
}
public void BuildTlvData_All()
{
var emvIssuerContext = new EmvIssuerContext();
emvIssuerContext.CaPublicKeyIndex = "01";
emvIssuerContext.IssuerPublicKeyCertificate = "0203";
emvIssuerContext.IssuerPublicKeyRemainder = "040506";
emvIssuerContext.IssuerPrivateKey = new PrivateKey {
PublicExponent = "07080900"
};
var tlv = emvIssuerContext.BuildTlvData();
Assert.AreEqual(4, tlv.Count);
Assert.AreEqual("8F 01 01", tlv.First(t => t.Tag == 0x8F).ToByteArray().ToHexa());
Assert.AreEqual("90 02 02 03", tlv.First(t => t.Tag == 0x90).ToByteArray().ToHexa());
Assert.AreEqual("92 03 04 05 06", tlv.First(t => t.Tag == 0x92).ToByteArray().ToHexa());
Assert.AreEqual("9F 32 04 07 08 09 00", tlv.First(t => t.Tag == 0x9F32).ToByteArray().ToHexa());
}