/// <inheritdoc />
protected override byte[] GetDataToSign(int privateKeyLength)
{
var iccPublicKeyModulus = IccPublicKey.Modulus.FromHexa();
var iccPublicKeyExponent = IccPublicKey.Exponent.FromHexa();
DataFormat = 0x04;
PublicKeyLength = (byte)iccPublicKeyModulus.Length;
PublicKeyExponentLength = (byte)iccPublicKeyExponent.Length;
PublicKeyorLeftmostDigitsofthePublicKey = new byte[privateKeyLength - 42];
// ICC Public Key Remainder (0 or NI – NCA + 42) - Present only if NI > NCA – 42 and consists of the NI – NCA + 42 least significant bytes of the ICC Public Key
byte[] iccPublicKeyRemainder;
if (IccPublicKey.Modulus.Length <= privateKeyLength - 42)
{
Array.Copy(iccPublicKeyModulus, PublicKeyorLeftmostDigitsofthePublicKey, iccPublicKeyModulus.Length);
// pad with 'BB'
for (var i = iccPublicKeyModulus.Length; i < privateKeyLength - 42; i++)
{
PublicKeyorLeftmostDigitsofthePublicKey[i] = 0xBB;
}
iccPublicKeyRemainder = new byte[0];
}
else
{
PublicKeyorLeftmostDigitsofthePublicKey = iccPublicKeyModulus.Take(privateKeyLength - 42).ToArray();
iccPublicKeyRemainder = new byte[iccPublicKeyModulus.Length - privateKeyLength + 42];
// TODO Set a correct value !!
}
var applicationPan = ApplicationPan
.ToHexa('\0')
.PadRight(20, 'F')
.FromHexa();
return(DataFormat.ToByteArray()
.Concat(applicationPan)
.Concat(CertificateExpirationDate)
.Concat(CertificateSerialNumber)
.Concat(HashAlgorithmIndicator.ToByteArray())
.Concat(PublicKeyAlgorithmIndicator.ToByteArray())
.Concat(PublicKeyLength.ToByteArray())
.Concat(PublicKeyExponentLength.ToByteArray())
.Concat(PublicKeyorLeftmostDigitsofthePublicKey)
.Concat(iccPublicKeyRemainder)
.Concat(iccPublicKeyExponent)
// TODO Add Static Data to be authenticated
.ToArray());
}
/// <inheritdoc />
public override string ToString()
{
var s = new StringBuilder();
s.AppendFormat("Header:[{0:X2}] ", DataHeader);
s.AppendFormat("Format:[{0:X2}] ", DataFormat);
s.AppendFormat("Issuer Identifier:[{0}] ", ApplicationPan.ToHexa('\0'));
s.AppendFormat("Expiration:[{0}] ", CertificateExpirationDate.ToHexa('\0'));
s.AppendFormat("Serial:[{0}] ", CertificateSerialNumber.ToHexa('\0'));
s.AppendFormat("Hash Algorithm:[{0:X2}] ", HashAlgorithmIndicator);
s.AppendFormat("PK Algorithm:[{0:X2}] ", PublicKeyAlgorithmIndicator);
s.AppendFormat("PK Length:[{0:X2}] ", PublicKeyLength);
s.AppendFormat("PKExp Length:[{0:X2}] ", PublicKeyExponentLength);
s.AppendFormat("Leftmost IssuerPK:[{0}] ", PublicKeyorLeftmostDigitsofthePublicKey.ToHexa('\0'));
s.AppendFormat("Hash:[{0}] ", HashResult.ToHexa('\0'));
s.AppendFormat("Trailer:[{0:X2}] ", DataTrailer);
return(s.ToString());
}