public void VerifyX509AuthorityKeyIdentifierExtensionOnlyKeyID()
{
byte[] subjectKeyIdentifier = new byte[] { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };
var aki = new X509AuthorityKeyIdentifierExtension(subjectKeyIdentifier);
Assert.NotNull(aki);
TestContext.Out.WriteLine("Encoded:");
TestContext.Out.WriteLine(aki.Format(true));
Assert.Null(aki.Issuer);
Assert.Null(aki.GetSerialNumber());
Assert.AreEqual(string.Empty, aki.SerialNumber);
Assert.AreEqual(subjectKeyIdentifier, aki.GetKeyIdentifier());
var akidecoded = new X509AuthorityKeyIdentifierExtension(aki.Oid, aki.RawData, aki.Critical);
TestContext.Out.WriteLine("Decoded:");
TestContext.Out.WriteLine(akidecoded.Format(true));
Assert.AreEqual(aki.RawData, akidecoded.RawData);
Assert.Null(aki.Issuer);
Assert.Null(aki.GetSerialNumber());
Assert.AreEqual(string.Empty, aki.SerialNumber);
Assert.AreEqual(subjectKeyIdentifier, akidecoded.GetKeyIdentifier());
akidecoded = new X509AuthorityKeyIdentifierExtension(aki.Oid.Value, aki.RawData, aki.Critical);
TestContext.Out.WriteLine("Decoded2:");
TestContext.Out.WriteLine(akidecoded.Format(true));
Assert.AreEqual(aki.RawData, akidecoded.RawData);
Assert.Null(aki.Issuer);
Assert.Null(aki.GetSerialNumber());
Assert.AreEqual(string.Empty, aki.SerialNumber);
Assert.AreEqual(subjectKeyIdentifier, akidecoded.GetKeyIdentifier());
}
public void VerifyX509AuthorityKeyIdentifierExtension()
{
var authorityName = new X500DistinguishedName("CN=Test,O=OPC Foundation,DC=localhost");
byte[] serialNumber = new byte[] { 9, 1, 2, 3, 4, 5, 6, 7, 8, 9 };
byte[] subjectKeyIdentifier = new byte[] { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };
var aki = new X509AuthorityKeyIdentifierExtension(subjectKeyIdentifier, authorityName, serialNumber);
Assert.NotNull(aki);
TestContext.Out.WriteLine("Encoded:");
TestContext.Out.WriteLine(aki.Format(true));
Assert.AreEqual(authorityName, aki.Issuer);
Assert.AreEqual(serialNumber, aki.GetSerialNumber());
Assert.AreEqual(AsnUtils.ToHexString(serialNumber, true), aki.SerialNumber);
Assert.AreEqual(subjectKeyIdentifier, aki.GetKeyIdentifier());
var akidecoded = new X509AuthorityKeyIdentifierExtension(aki.Oid, aki.RawData, aki.Critical);
TestContext.Out.WriteLine("Decoded:");
TestContext.Out.WriteLine(akidecoded.Format(true));
Assert.AreEqual(aki.RawData, akidecoded.RawData);
Assert.AreEqual(authorityName.ToString(), akidecoded.Issuer.ToString());
Assert.AreEqual(serialNumber, akidecoded.GetSerialNumber());
Assert.AreEqual(AsnUtils.ToHexString(serialNumber, true), akidecoded.SerialNumber);
Assert.AreEqual(subjectKeyIdentifier, akidecoded.GetKeyIdentifier());
akidecoded = new X509AuthorityKeyIdentifierExtension(aki.Oid.Value, aki.RawData, aki.Critical);
TestContext.Out.WriteLine("Decoded2:");
TestContext.Out.WriteLine(akidecoded.Format(true));
Assert.AreEqual(aki.RawData, akidecoded.RawData);
Assert.AreEqual(authorityName.ToString(), akidecoded.Issuer.ToString());
Assert.AreEqual(serialNumber, akidecoded.GetSerialNumber());
Assert.AreEqual(AsnUtils.ToHexString(serialNumber, true), akidecoded.SerialNumber);
Assert.AreEqual(subjectKeyIdentifier, akidecoded.GetKeyIdentifier());
}
public static void VerifyCACert(X509Certificate2 cert, string subject, int pathLengthConstraint)
{
TestContext.Out.WriteLine($"{nameof(VerifyCACert)}:");
Assert.NotNull(cert);
TestContext.Out.WriteLine(cert);
Assert.False(cert.HasPrivateKey);
Assert.True(X509Utils.CompareDistinguishedName(subject, cert.Subject));
Assert.True(X509Utils.CompareDistinguishedName(subject, cert.Issuer));
// test basic constraints
var constraints = X509Extensions.FindExtension <X509BasicConstraintsExtension>(cert);
Assert.NotNull(constraints);
TestContext.Out.WriteLine(constraints.Format(true));
Assert.True(constraints.Critical);
Assert.True(constraints.CertificateAuthority);
if (pathLengthConstraint < 0)
{
Assert.False(constraints.HasPathLengthConstraint);
}
else
{
Assert.True(constraints.HasPathLengthConstraint);
Assert.AreEqual(pathLengthConstraint, constraints.PathLengthConstraint);
}
// key usage
var keyUsage = X509Extensions.FindExtension <X509KeyUsageExtension>(cert);
Assert.NotNull(keyUsage);
TestContext.Out.WriteLine(keyUsage.Format(true));
Assert.True(keyUsage.Critical);
Assert.True((keyUsage.KeyUsages & X509KeyUsageFlags.CrlSign) == X509KeyUsageFlags.CrlSign);
Assert.True((keyUsage.KeyUsages & X509KeyUsageFlags.DataEncipherment) == 0);
Assert.True((keyUsage.KeyUsages & X509KeyUsageFlags.DecipherOnly) == 0);
Assert.True((keyUsage.KeyUsages & X509KeyUsageFlags.DigitalSignature) == X509KeyUsageFlags.DigitalSignature);
Assert.True((keyUsage.KeyUsages & X509KeyUsageFlags.EncipherOnly) == 0);
Assert.True((keyUsage.KeyUsages & X509KeyUsageFlags.KeyAgreement) == 0);
Assert.True((keyUsage.KeyUsages & X509KeyUsageFlags.KeyCertSign) == X509KeyUsageFlags.KeyCertSign);
Assert.True((keyUsage.KeyUsages & X509KeyUsageFlags.KeyEncipherment) == 0);
Assert.True((keyUsage.KeyUsages & X509KeyUsageFlags.NonRepudiation) == 0);
// enhanced key usage
X509EnhancedKeyUsageExtension enhancedKeyUsage = X509Extensions.FindExtension <X509EnhancedKeyUsageExtension>(cert);
Assert.Null(enhancedKeyUsage);
// test for authority key
X509AuthorityKeyIdentifierExtension authority = X509Extensions.FindExtension <X509AuthorityKeyIdentifierExtension>(cert);
Assert.NotNull(authority);
TestContext.Out.WriteLine(authority.Format(true));
Assert.NotNull(authority.SerialNumber);
Assert.NotNull(authority.GetSerialNumber());
Assert.NotNull(authority.KeyIdentifier);
Assert.NotNull(authority.Issuer);
Assert.NotNull(authority.ToString());
Assert.AreEqual(authority.SerialNumber, Utils.ToHexString(authority.GetSerialNumber(), true));
// verify authority key in signed cert
X509SubjectKeyIdentifierExtension subjectKeyId = X509Extensions.FindExtension <X509SubjectKeyIdentifierExtension>(cert);
TestContext.Out.WriteLine(subjectKeyId.Format(true));
Assert.AreEqual(subjectKeyId.SubjectKeyIdentifier, authority.KeyIdentifier);
Assert.AreEqual(cert.SerialNumber, authority.SerialNumber);
Assert.AreEqual(cert.GetSerialNumber(), authority.GetSerialNumber());
X509SubjectAltNameExtension subjectAlternateName = X509Extensions.FindExtension <X509SubjectAltNameExtension>(cert);
Assert.Null(subjectAlternateName);
}
public static void VerifyApplicationCert(ApplicationTestData testApp, X509Certificate2 cert, X509Certificate2 issuerCert = null)
{
bool signedCert = issuerCert != null;
if (issuerCert == null)
{
issuerCert = cert;
}
TestContext.Out.WriteLine($"{nameof(VerifyApplicationCert)}:");
Assert.NotNull(cert);
TestContext.Out.WriteLine(cert);
Assert.False(cert.HasPrivateKey);
Assert.True(X509Utils.CompareDistinguishedName(testApp.Subject, cert.Subject));
Assert.True(X509Utils.CompareDistinguishedName(issuerCert.Subject, cert.Issuer));
// test basic constraints
X509BasicConstraintsExtension constraints = X509Extensions.FindExtension <X509BasicConstraintsExtension>(cert);
Assert.NotNull(constraints);
TestContext.Out.WriteLine(constraints.Format(true));
Assert.True(constraints.Critical);
if (signedCert)
{
Assert.False(constraints.CertificateAuthority);
Assert.False(constraints.HasPathLengthConstraint);
}
else
{
Assert.True(constraints.CertificateAuthority);
Assert.True(constraints.HasPathLengthConstraint);
Assert.AreEqual(0, constraints.PathLengthConstraint);
}
// key usage
X509KeyUsageExtension keyUsage = X509Extensions.FindExtension <X509KeyUsageExtension>(cert);
Assert.NotNull(keyUsage);
TestContext.Out.WriteLine(keyUsage.Format(true));
Assert.True(keyUsage.Critical);
Assert.True((keyUsage.KeyUsages & X509KeyUsageFlags.CrlSign) == 0);
Assert.True((keyUsage.KeyUsages & X509KeyUsageFlags.DataEncipherment) == X509KeyUsageFlags.DataEncipherment);
Assert.True((keyUsage.KeyUsages & X509KeyUsageFlags.DecipherOnly) == 0);
Assert.True((keyUsage.KeyUsages & X509KeyUsageFlags.DigitalSignature) == X509KeyUsageFlags.DigitalSignature);
Assert.True((keyUsage.KeyUsages & X509KeyUsageFlags.EncipherOnly) == 0);
Assert.True((keyUsage.KeyUsages & X509KeyUsageFlags.KeyAgreement) == 0);
Assert.True((keyUsage.KeyUsages & X509KeyUsageFlags.KeyCertSign) == (signedCert ? 0 : X509KeyUsageFlags.KeyCertSign));
Assert.True((keyUsage.KeyUsages & X509KeyUsageFlags.KeyEncipherment) == X509KeyUsageFlags.KeyEncipherment);
Assert.True((keyUsage.KeyUsages & X509KeyUsageFlags.NonRepudiation) == X509KeyUsageFlags.NonRepudiation);
// enhanced key usage
X509EnhancedKeyUsageExtension enhancedKeyUsage = X509Extensions.FindExtension <X509EnhancedKeyUsageExtension>(cert);
Assert.NotNull(enhancedKeyUsage);
TestContext.Out.WriteLine(enhancedKeyUsage.Format(true));
Assert.True(enhancedKeyUsage.Critical);
// test for authority key
X509AuthorityKeyIdentifierExtension authority = X509Extensions.FindExtension <X509AuthorityKeyIdentifierExtension>(cert);
Assert.NotNull(authority);
TestContext.Out.WriteLine(authority.Format(true));
Assert.NotNull(authority.SerialNumber);
Assert.NotNull(authority.KeyIdentifier);
Assert.NotNull(authority.Issuer);
if (issuerCert == null)
{
Assert.AreEqual(cert.SubjectName.RawData, authority.Issuer.RawData);
Assert.True(X509Utils.CompareDistinguishedName(cert.SubjectName.Name, authority.Issuer.Name), $"{cert.SubjectName.Name} != {authority.Issuer.Name}");
}
else
{
Assert.AreEqual(issuerCert.SubjectName.RawData, authority.Issuer.RawData);
Assert.True(X509Utils.CompareDistinguishedName(issuerCert.SubjectName.Name, authority.Issuer.Name), $"{cert.SubjectName.Name} != {authority.Issuer.Name}");
}
// verify authority key in signed cert
X509SubjectKeyIdentifierExtension subjectKeyId = X509Extensions.FindExtension <X509SubjectKeyIdentifierExtension>(cert);
TestContext.Out.WriteLine(subjectKeyId.Format(true));
if (signedCert)
{
var caCertSubjectKeyId = X509Extensions.FindExtension <X509SubjectKeyIdentifierExtension>(issuerCert);
Assert.NotNull(caCertSubjectKeyId);
Assert.AreEqual(caCertSubjectKeyId.SubjectKeyIdentifier, authority.KeyIdentifier);
}
else
{
Assert.AreEqual(subjectKeyId.SubjectKeyIdentifier, authority.KeyIdentifier);
}
Assert.AreEqual(issuerCert.GetSerialNumber(), authority.GetSerialNumber());
Assert.AreEqual(issuerCert.SerialNumber, authority.SerialNumber);
X509SubjectAltNameExtension subjectAlternateName = X509Extensions.FindExtension <X509SubjectAltNameExtension>(cert);
Assert.NotNull(subjectAlternateName);
TestContext.Out.WriteLine(subjectAlternateName.Format(true));
Assert.False(subjectAlternateName.Critical);
var domainNames = X509Utils.GetDomainsFromCertficate(cert);
foreach (var domainName in testApp.DomainNames)
{
Assert.True(domainNames.Contains(domainName, StringComparer.OrdinalIgnoreCase));
}
Assert.True(subjectAlternateName.Uris.Count == 1);
var applicationUri = X509Utils.GetApplicationUriFromCertificate(cert);
TestContext.Out.WriteLine("ApplicationUri: ");
TestContext.Out.WriteLine(applicationUri);
Assert.AreEqual(testApp.ApplicationUri, applicationUri);
}