/// <exception cref="System.IO.IOException"></exception>
public virtual X509Crl FindCrl(X509Certificate certificate, X509Certificate issuerCertificate)
{
OnlineCrlSource source = this.CachedSource ?? new OnlineCrlSource();
string crlUrl = source.GetCrlUri(certificate);
if (crlUrl != null)
{
try
{
CachedCRL cachedCrl = null;
string key = Hex.ToHexString(
DigestUtilities.CalculateDigest(DigestAlgorithm.SHA1.GetOid()
, Sharpen.Runtime.GetBytesForString(crlUrl)));
string pathCrl = Path.Combine("CRL", key);
DirectoryInfo dirCrl = new DirectoryInfo("CRL");
if (dirCrl.Exists)
{
FileInfo[] archivosCrl = dirCrl.GetFiles();
foreach (FileInfo a in archivosCrl)
{
if (a.Extension.Equals(".txt"))
continue;
if (a.Name.Equals(key))
{
cachedCrl = new CachedCRL()
{
Crl = File.ReadAllBytes(a.FullName),
Key = key
};
break;
}
}
}
else
{
dirCrl.Create();
}
if (cachedCrl == null)
{
LOG.Info("CRL not in cache");
return FindAndCacheCrlOnline(certificate, issuerCertificate, pathCrl);
}
X509CrlParser parser = new X509CrlParser();
X509Crl x509crl = parser.ReadCrl(cachedCrl.Crl);
if (x509crl.NextUpdate.Value.CompareTo(DateTime.Now) > 0)
{
LOG.Info("CRL in cache");
return x509crl;
}
else
{
LOG.Info("CRL expired");
return FindAndCacheCrlOnline(certificate, issuerCertificate, pathCrl);
}
}
catch (NoSuchAlgorithmException)
{
LOG.Info("Cannot instantiate digest for algorithm SHA1 !?");
}
catch (CrlException)
{
LOG.Info("Cannot serialize CRL");
}
catch (CertificateException)
{
LOG.Info("Cannot instanciate X509 Factory");
}
catch (WebException)
{
LOG.Info("Cannot connect to CRL URL");
}
}
return null;
}
/// <exception cref="System.IO.IOException"></exception>
public virtual X509Crl FindCrl(X509Certificate certificate, X509Certificate issuerCertificate)
{
OnlineCrlSource source = this.CachedSource ?? new OnlineCrlSource();
string crlUrl = source.GetCrlUri(certificate);
if (crlUrl != null)
{
try
{
CachedCRL cachedCrl = null;
string key = Hex.ToHexString(
DigestUtilities.CalculateDigest(DigestAlgorithm.SHA1.GetOid()
, Sharpen.Runtime.GetBytesForString(crlUrl)));
string pathCrl = Path.Combine("CRL", key);
DirectoryInfo dirCrl = new DirectoryInfo("CRL");
if (dirCrl.Exists)
{
FileInfo[] archivosCrl = dirCrl.GetFiles();
foreach (FileInfo a in archivosCrl)
{
if (a.Extension.Equals(".txt"))
{
continue;
}
if (a.Name.Equals(key))
{
cachedCrl = new CachedCRL()
{
Crl = File.ReadAllBytes(a.FullName),
Key = key
};
break;
}
}
}
else
{
dirCrl.Create();
}
if (cachedCrl == null)
{
LOG.Info("CRL not in cache");
return(FindAndCacheCrlOnline(certificate, issuerCertificate, pathCrl));
}
X509CrlParser parser = new X509CrlParser();
X509Crl x509crl = parser.ReadCrl(cachedCrl.Crl);
if (x509crl.NextUpdate.Value.CompareTo(DateTime.Now) > 0)
{
LOG.Info("CRL in cache");
return(x509crl);
}
else
{
LOG.Info("CRL expired");
return(FindAndCacheCrlOnline(certificate, issuerCertificate, pathCrl));
}
}
catch (NoSuchAlgorithmException)
{
LOG.Info("Cannot instantiate digest for algorithm SHA1 !?");
}
catch (CrlException)
{
LOG.Info("Cannot serialize CRL");
}
catch (CertificateException)
{
LOG.Info("Cannot instanciate X509 Factory");
}
catch (WebException)
{
LOG.Info("Cannot connect to CRL URL");
}
}
return(null);
}
