private string GetAccessLocation(X509Certificate certificate, DerObjectIdentifier
accessMethod)
{
Asn1OctetString authInfoAccessExtensionValue = certificate.GetExtensionValue(X509Extensions
.AuthorityInfoAccess);
if (null == authInfoAccessExtensionValue)
{
return(null);
}
AuthorityInformationAccess authorityInformationAccess = AuthorityInformationAccess.GetInstance(authInfoAccessExtensionValue.GetOctets());
AccessDescription[] accessDescriptions = authorityInformationAccess.GetAccessDescriptions();
foreach (AccessDescription accessDescription in accessDescriptions)
{
logger.Info("access method: " + accessDescription.AccessMethod);
bool correctAccessMethod = accessDescription.AccessMethod.Equals(accessMethod);
if (!correctAccessMethod)
{
continue;
}
GeneralName gn = accessDescription.AccessLocation;
if (gn.TagNo != GeneralName.UniformResourceIdentifier)
{
logger.Info("not a uniform resource identifier");
continue;
}
DerIA5String str = (DerIA5String)((DerTaggedObject)gn.ToAsn1Object()).GetObject();
string accessLocation = str.GetString();
logger.Info("access location: " + accessLocation);
return(accessLocation);
}
return(null);
}
private string GetAccessLocation(X509Certificate certificate, DerObjectIdentifier
accessMethod)
{
try
{
//byte[] authInfoAccessExtensionValue = certificate.GetExtensionValue(X509Extensions
// .AuthorityInfoAccess);
Asn1OctetString authInfoAccessExtensionValue = certificate.GetExtensionValue(X509Extensions
.AuthorityInfoAccess);
if (null == authInfoAccessExtensionValue)
{
return(null);
}
AuthorityInformationAccess authorityInformationAccess;
//DerOctetString oct = (DerOctetString)(new Asn1InputStream(new MemoryStream
// (authInfoAccessExtensionValue)).ReadObject());
DerOctetString oct = (DerOctetString)authInfoAccessExtensionValue;
//authorityInformationAccess = new AuthorityInformationAccess((Asn1Sequence)new Asn1InputStream
// (oct.GetOctets()).ReadObject());
authorityInformationAccess = AuthorityInformationAccess.GetInstance(oct);
AccessDescription[] accessDescriptions = authorityInformationAccess.GetAccessDescriptions
();
foreach (AccessDescription accessDescription in accessDescriptions)
{
LOG.Info("access method: " + accessDescription.AccessMethod);
bool correctAccessMethod = accessDescription.AccessMethod.Equals(accessMethod
);
if (!correctAccessMethod)
{
continue;
}
GeneralName gn = accessDescription.AccessLocation;
if (gn.TagNo != GeneralName.UniformResourceIdentifier)
{
LOG.Info("not a uniform resource identifier");
continue;
}
DerIA5String str = (DerIA5String)((DerTaggedObject)gn.ToAsn1Object()).GetObject();
string accessLocation = str.GetString();
LOG.Info("access location: " + accessLocation);
return(accessLocation);
}
return(null);
}
catch (IOException e)
{
throw new RuntimeException("IO error: " + e.Message, e);
}
}