|
static private FindTrustAnchor ( |
||
| cert | the X509 certificate | |
| trustAnchors | ISet | a Set of TrustAnchor's |
| return | ||
private PkixCertPathBuilderResult Build(IX509AttributeCertificate attrCert, X509Certificate tbvCert, PkixBuilderParameters pkixParams, IList tbvPath)
{
if (tbvPath.Contains(tbvCert))
{
return(null);
}
if (pkixParams.GetExcludedCerts().Contains(tbvCert))
{
return(null);
}
if (pkixParams.MaxPathLength != -1 && tbvPath.Count - 1 > pkixParams.MaxPathLength)
{
return(null);
}
tbvPath.Add(tbvCert);
PkixCertPathBuilderResult pkixCertPathBuilderResult = null;
PkixAttrCertPathValidator pkixAttrCertPathValidator = new PkixAttrCertPathValidator();
try
{
if (PkixCertPathValidatorUtilities.FindTrustAnchor(tbvCert, pkixParams.GetTrustAnchors()) != null)
{
PkixCertPath certPath = new PkixCertPath(tbvPath);
PkixCertPathValidatorResult pkixCertPathValidatorResult;
try
{
pkixCertPathValidatorResult = pkixAttrCertPathValidator.Validate(certPath, pkixParams);
}
catch (Exception innerException)
{
throw new Exception("Certification path could not be validated.", innerException);
}
return(new PkixCertPathBuilderResult(certPath, pkixCertPathValidatorResult.TrustAnchor, pkixCertPathValidatorResult.PolicyTree, pkixCertPathValidatorResult.SubjectPublicKey));
}
try
{
PkixCertPathValidatorUtilities.AddAdditionalStoresFromAltNames(tbvCert, pkixParams);
}
catch (CertificateParsingException innerException2)
{
throw new Exception("No additional X.509 stores can be added from certificate locations.", innerException2);
}
ISet set = new HashSet();
try
{
set.AddAll(PkixCertPathValidatorUtilities.FindIssuerCerts(tbvCert, pkixParams));
}
catch (Exception innerException3)
{
throw new Exception("Cannot find issuer certificate for certificate in certification path.", innerException3);
}
if (set.IsEmpty)
{
throw new Exception("No issuer certificate for certificate in certification path found.");
}
foreach (X509Certificate x509Certificate in set)
{
if (!PkixCertPathValidatorUtilities.IsSelfIssued(x509Certificate))
{
pkixCertPathBuilderResult = this.Build(attrCert, x509Certificate, pkixParams, tbvPath);
if (pkixCertPathBuilderResult != null)
{
break;
}
}
}
}
catch (Exception innerException4)
{
this.certPathException = new Exception("No valid certification path could be build.", innerException4);
}
if (pkixCertPathBuilderResult == null)
{
tbvPath.Remove(tbvCert);
}
return(pkixCertPathBuilderResult);
}
protected virtual PkixCertPathBuilderResult Build(
X509Certificate tbvCert,
PkixBuilderParameters pkixParams,
IList tbvPath)
{
// If tbvCert is readily present in tbvPath, it indicates having run
// into a cycle in the PKI graph.
if (tbvPath.Contains(tbvCert))
{
return(null);
}
// step out, the certificate is not allowed to appear in a certification
// chain.
if (pkixParams.GetExcludedCerts().Contains(tbvCert))
{
return(null);
}
// test if certificate path exceeds maximum length
if (pkixParams.MaxPathLength != -1)
{
if (tbvPath.Count - 1 > pkixParams.MaxPathLength)
{
return(null);
}
}
tbvPath.Add(tbvCert);
X509CertificateParser certParser = new X509CertificateParser();
PkixCertPathBuilderResult builderResult = null;
PkixCertPathValidator validator = new PkixCertPathValidator();
try
{
// check whether the issuer of <tbvCert> is a TrustAnchor
if (PkixCertPathValidatorUtilities.FindTrustAnchor(tbvCert, pkixParams.GetTrustAnchors()) != null)
{
// exception message from possibly later tried certification
// chains
PkixCertPath certPath = null;
try
{
certPath = new PkixCertPath(tbvPath);
}
catch (Exception e)
{
throw new Exception(
"Certification path could not be constructed from certificate list.",
e);
}
PkixCertPathValidatorResult result = null;
try
{
result = (PkixCertPathValidatorResult)validator.Validate(
certPath, pkixParams);
}
catch (Exception e)
{
throw new Exception(
"Certification path could not be validated.", e);
}
return(new PkixCertPathBuilderResult(certPath, result.TrustAnchor,
result.PolicyTree, result.SubjectPublicKey));
}
else
{
// add additional X.509 stores from locations in certificate
try
{
PkixCertPathValidatorUtilities.AddAdditionalStoresFromAltNames(
tbvCert, pkixParams);
}
catch (CertificateParsingException e)
{
throw new Exception(
"No additiontal X.509 stores can be added from certificate locations.",
e);
}
// try to get the issuer certificate from one of the stores
HashSet issuers = new HashSet();
try
{
issuers.AddAll(PkixCertPathValidatorUtilities.FindIssuerCerts(tbvCert, pkixParams));
}
catch (Exception e)
{
throw new Exception(
"Cannot find issuer certificate for certificate in certification path.",
e);
}
if (issuers.IsEmpty)
{
throw new Exception("No issuer certificate for certificate in certification path found.");
}
foreach (X509Certificate issuer in issuers)
{
builderResult = Build(issuer, pkixParams, tbvPath);
if (builderResult != null)
{
break;
}
}
}
}
catch (Exception e)
{
certPathException = e;
}
if (builderResult == null)
{
tbvPath.Remove(tbvCert);
}
return(builderResult);
}
public virtual PkixCertPathValidatorResult Validate(
PkixCertPath certPath,
PkixParameters paramsPkix)
{
if (paramsPkix.GetTrustAnchors() == null)
{
throw new ArgumentException(
"trustAnchors is null, this is not allowed for certification path validation.",
"parameters");
}
//
// 6.1.1 - inputs
//
//
// (a)
//
IList certs = certPath.Certificates;
int n = certs.Count;
if (certs.Count == 0)
{
throw new PkixCertPathValidatorException("Certification path is empty.", null, certPath, 0);
}
//
// (b)
//
// DateTime validDate = PkixCertPathValidatorUtilities.GetValidDate(paramsPkix);
//
// (c)
//
ISet userInitialPolicySet = paramsPkix.GetInitialPolicies();
//
// (d)
//
TrustAnchor trust;
try
{
trust = PkixCertPathValidatorUtilities.FindTrustAnchor(
(X509Certificate)certs[certs.Count - 1],
paramsPkix.GetTrustAnchors());
}
catch (Exception e)
{
throw new PkixCertPathValidatorException(e.Message, e, certPath, certs.Count - 1);
}
if (trust == null)
{
throw new PkixCertPathValidatorException("Trust anchor for certification path not found.", null, certPath, -1);
}
//
// (e), (f), (g) are part of the paramsPkix object.
//
IEnumerator certIter;
int index = 0;
int i;
// Certificate for each interation of the validation loop
// Signature information for each iteration of the validation loop
//
// 6.1.2 - setup
//
//
// (a)
//
IList[] policyNodes = new IList[n + 1];
for (int j = 0; j < policyNodes.Length; j++)
{
policyNodes[j] = Platform.CreateArrayList();
}
ISet policySet = new HashSet();
policySet.Add(Rfc3280CertPathUtilities.ANY_POLICY);
PkixPolicyNode validPolicyTree = new PkixPolicyNode(Platform.CreateArrayList(), 0, policySet, null, new HashSet(),
Rfc3280CertPathUtilities.ANY_POLICY, false);
policyNodes[0].Add(validPolicyTree);
//
// (b) and (c)
//
PkixNameConstraintValidator nameConstraintValidator = new PkixNameConstraintValidator();
// (d)
//
int explicitPolicy;
ISet acceptablePolicies = new HashSet();
if (paramsPkix.IsExplicitPolicyRequired)
{
explicitPolicy = 0;
}
else
{
explicitPolicy = n + 1;
}
//
// (e)
//
int inhibitAnyPolicy;
if (paramsPkix.IsAnyPolicyInhibited)
{
inhibitAnyPolicy = 0;
}
else
{
inhibitAnyPolicy = n + 1;
}
//
// (f)
//
int policyMapping;
if (paramsPkix.IsPolicyMappingInhibited)
{
policyMapping = 0;
}
else
{
policyMapping = n + 1;
}
//
// (g), (h), (i), (j)
//
AsymmetricKeyParameter workingPublicKey;
X509Name workingIssuerName;
X509Certificate sign = trust.TrustedCert;
try
{
if (sign != null)
{
workingIssuerName = sign.SubjectDN;
workingPublicKey = sign.GetPublicKey();
}
else
{
workingIssuerName = new X509Name(trust.CAName);
workingPublicKey = trust.CAPublicKey;
}
}
catch (ArgumentException ex)
{
throw new PkixCertPathValidatorException("Subject of trust anchor could not be (re)encoded.", ex, certPath,
-1);
}
//AlgorithmIdentifier workingAlgId = null;
try
{
/*workingAlgId = */ PkixCertPathValidatorUtilities.GetAlgorithmIdentifier(workingPublicKey);
}
catch (PkixCertPathValidatorException e)
{
throw new PkixCertPathValidatorException(
"Algorithm identifier of public key of trust anchor could not be read.", e, certPath, -1);
}
// DerObjectIdentifier workingPublicKeyAlgorithm = workingAlgId.ObjectID;
// Asn1Encodable workingPublicKeyParameters = workingAlgId.Parameters;
//
// (k)
//
int maxPathLength = n;
//
// 6.1.3
//
X509CertStoreSelector certConstraints = paramsPkix.GetTargetCertConstraints();
if (certConstraints != null && !certConstraints.Match((X509Certificate)certs[0]))
{
throw new PkixCertPathValidatorException(
"Target certificate in certification path does not match targetConstraints.", null, certPath, 0);
}
//
// initialize CertPathChecker's
//
IList pathCheckers = paramsPkix.GetCertPathCheckers();
certIter = pathCheckers.GetEnumerator();
while (certIter.MoveNext())
{
((PkixCertPathChecker)certIter.Current).Init(false);
}
X509Certificate cert = null;
for (index = certs.Count - 1; index >= 0; index--)
{
// try
// {
//
// i as defined in the algorithm description
//
i = n - index;
//
// set certificate to be checked in this round
// sign and workingPublicKey and workingIssuerName are set
// at the end of the for loop and initialized the
// first time from the TrustAnchor
//
cert = (X509Certificate)certs[index];
//
// 6.1.3
//
Rfc3280CertPathUtilities.ProcessCertA(certPath, paramsPkix, index, workingPublicKey,
workingIssuerName, sign);
Rfc3280CertPathUtilities.ProcessCertBC(certPath, index, nameConstraintValidator);
validPolicyTree = Rfc3280CertPathUtilities.ProcessCertD(certPath, index,
acceptablePolicies, validPolicyTree, policyNodes, inhibitAnyPolicy);
validPolicyTree = Rfc3280CertPathUtilities.ProcessCertE(certPath, index, validPolicyTree);
Rfc3280CertPathUtilities.ProcessCertF(certPath, index, validPolicyTree, explicitPolicy);
//
// 6.1.4
//
if (i != n)
{
if (cert != null && cert.Version == 1)
{
throw new PkixCertPathValidatorException(
"Version 1 certificates can't be used as CA ones.", null, certPath, index);
}
Rfc3280CertPathUtilities.PrepareNextCertA(certPath, index);
validPolicyTree = Rfc3280CertPathUtilities.PrepareCertB(certPath, index, policyNodes,
validPolicyTree, policyMapping);
Rfc3280CertPathUtilities.PrepareNextCertG(certPath, index, nameConstraintValidator);
// (h)
explicitPolicy = Rfc3280CertPathUtilities.PrepareNextCertH1(certPath, index, explicitPolicy);
policyMapping = Rfc3280CertPathUtilities.PrepareNextCertH2(certPath, index, policyMapping);
inhibitAnyPolicy = Rfc3280CertPathUtilities.PrepareNextCertH3(certPath, index, inhibitAnyPolicy);
//
// (i)
//
explicitPolicy = Rfc3280CertPathUtilities.PrepareNextCertI1(certPath, index, explicitPolicy);
policyMapping = Rfc3280CertPathUtilities.PrepareNextCertI2(certPath, index, policyMapping);
// (j)
inhibitAnyPolicy = Rfc3280CertPathUtilities.PrepareNextCertJ(certPath, index, inhibitAnyPolicy);
// (k)
Rfc3280CertPathUtilities.PrepareNextCertK(certPath, index);
// (l)
maxPathLength = Rfc3280CertPathUtilities.PrepareNextCertL(certPath, index, maxPathLength);
// (m)
maxPathLength = Rfc3280CertPathUtilities.PrepareNextCertM(certPath, index, maxPathLength);
// (n)
Rfc3280CertPathUtilities.PrepareNextCertN(certPath, index);
ISet criticalExtensions1 = cert.GetCriticalExtensionOids();
if (criticalExtensions1 != null)
{
criticalExtensions1 = new HashSet(criticalExtensions1);
// these extensions are handled by the algorithm
criticalExtensions1.Remove(X509Extensions.KeyUsage.Id);
criticalExtensions1.Remove(X509Extensions.CertificatePolicies.Id);
criticalExtensions1.Remove(X509Extensions.PolicyMappings.Id);
criticalExtensions1.Remove(X509Extensions.InhibitAnyPolicy.Id);
criticalExtensions1.Remove(X509Extensions.IssuingDistributionPoint.Id);
criticalExtensions1.Remove(X509Extensions.DeltaCrlIndicator.Id);
criticalExtensions1.Remove(X509Extensions.PolicyConstraints.Id);
criticalExtensions1.Remove(X509Extensions.BasicConstraints.Id);
criticalExtensions1.Remove(X509Extensions.SubjectAlternativeName.Id);
criticalExtensions1.Remove(X509Extensions.NameConstraints.Id);
}
else
{
criticalExtensions1 = new HashSet();
}
// (o)
Rfc3280CertPathUtilities.PrepareNextCertO(certPath, index, criticalExtensions1, pathCheckers);
// set signing certificate for next round
sign = cert;
// (c)
workingIssuerName = sign.SubjectDN;
// (d)
try
{
workingPublicKey = PkixCertPathValidatorUtilities.GetNextWorkingKey(certPath.Certificates, index);
}
catch (PkixCertPathValidatorException e)
{
throw new PkixCertPathValidatorException("Next working key could not be retrieved.", e, certPath, index);
}
/*workingAlgId = */ PkixCertPathValidatorUtilities.GetAlgorithmIdentifier(workingPublicKey);
// (f)
// workingPublicKeyAlgorithm = workingAlgId.ObjectID;
// (e)
// workingPublicKeyParameters = workingAlgId.Parameters;
}
}
//
// 6.1.5 Wrap-up procedure
//
explicitPolicy = Rfc3280CertPathUtilities.WrapupCertA(explicitPolicy, cert);
explicitPolicy = Rfc3280CertPathUtilities.WrapupCertB(certPath, index + 1, explicitPolicy);
//
// (c) (d) and (e) are already done
//
//
// (f)
//
ISet criticalExtensions = cert.GetCriticalExtensionOids();
if (criticalExtensions != null)
{
criticalExtensions = new HashSet(criticalExtensions);
// Requires .Id
// these extensions are handled by the algorithm
criticalExtensions.Remove(X509Extensions.KeyUsage.Id);
criticalExtensions.Remove(X509Extensions.CertificatePolicies.Id);
criticalExtensions.Remove(X509Extensions.PolicyMappings.Id);
criticalExtensions.Remove(X509Extensions.InhibitAnyPolicy.Id);
criticalExtensions.Remove(X509Extensions.IssuingDistributionPoint.Id);
criticalExtensions.Remove(X509Extensions.DeltaCrlIndicator.Id);
criticalExtensions.Remove(X509Extensions.PolicyConstraints.Id);
criticalExtensions.Remove(X509Extensions.BasicConstraints.Id);
criticalExtensions.Remove(X509Extensions.SubjectAlternativeName.Id);
criticalExtensions.Remove(X509Extensions.NameConstraints.Id);
criticalExtensions.Remove(X509Extensions.CrlDistributionPoints.Id);
}
else
{
criticalExtensions = new HashSet();
}
Rfc3280CertPathUtilities.WrapupCertF(certPath, index + 1, pathCheckers, criticalExtensions);
PkixPolicyNode intersection = Rfc3280CertPathUtilities.WrapupCertG(certPath, paramsPkix, userInitialPolicySet,
index + 1, policyNodes, validPolicyTree, acceptablePolicies);
if ((explicitPolicy > 0) || (intersection != null))
{
return(new PkixCertPathValidatorResult(trust, intersection, cert.GetPublicKey()));
}
throw new PkixCertPathValidatorException("Path processing failed on policy.", null, certPath, index);
}
private PkixCertPathBuilderResult Build(IX509AttributeCertificate attrCert, X509Certificate tbvCert, PkixBuilderParameters pkixParams, global::System.Collections.IList tbvPath)
{
if (tbvPath.Contains((object)tbvCert))
{
return(null);
}
if (pkixParams.GetExcludedCerts().Contains(tbvCert))
{
return(null);
}
if (pkixParams.MaxPathLength != -1 && ((global::System.Collections.ICollection)tbvPath).get_Count() - 1 > pkixParams.MaxPathLength)
{
return(null);
}
tbvPath.Add((object)tbvCert);
PkixCertPathBuilderResult pkixCertPathBuilderResult = null;
PkixAttrCertPathValidator pkixAttrCertPathValidator = new PkixAttrCertPathValidator();
try
{
if (PkixCertPathValidatorUtilities.FindTrustAnchor(tbvCert, pkixParams.GetTrustAnchors()) != null)
{
PkixCertPath certPath = new PkixCertPath((global::System.Collections.ICollection)tbvPath);
PkixCertPathValidatorResult pkixCertPathValidatorResult;
try
{
pkixCertPathValidatorResult = pkixAttrCertPathValidator.Validate(certPath, pkixParams);
}
catch (global::System.Exception ex)
{
throw new global::System.Exception("Certification path could not be validated.", ex);
}
return(new PkixCertPathBuilderResult(certPath, pkixCertPathValidatorResult.TrustAnchor, pkixCertPathValidatorResult.PolicyTree, pkixCertPathValidatorResult.SubjectPublicKey));
}
try
{
PkixCertPathValidatorUtilities.AddAdditionalStoresFromAltNames(tbvCert, pkixParams);
}
catch (CertificateParsingException ex2)
{
throw new global::System.Exception("No additional X.509 stores can be added from certificate locations.", (global::System.Exception)ex2);
}
ISet set = new HashSet();
try
{
set.AddAll((global::System.Collections.IEnumerable)PkixCertPathValidatorUtilities.FindIssuerCerts(tbvCert, pkixParams));
}
catch (global::System.Exception ex3)
{
throw new global::System.Exception("Cannot find issuer certificate for certificate in certification path.", ex3);
}
if (set.IsEmpty)
{
throw new global::System.Exception("No issuer certificate for certificate in certification path found.");
}
global::System.Collections.IEnumerator enumerator = ((global::System.Collections.IEnumerable)set).GetEnumerator();
try
{
while (enumerator.MoveNext())
{
X509Certificate x509Certificate = (X509Certificate)enumerator.get_Current();
if (!PkixCertPathValidatorUtilities.IsSelfIssued(x509Certificate))
{
pkixCertPathBuilderResult = Build(attrCert, x509Certificate, pkixParams, tbvPath);
if (pkixCertPathBuilderResult != null)
{
break;
}
}
}
}
finally
{
global::System.IDisposable disposable = enumerator as global::System.IDisposable;
if (disposable != null)
{
disposable.Dispose();
}
}
}
catch (global::System.Exception ex4)
{
certPathException = new global::System.Exception("No valid certification path could be build.", ex4);
}
if (pkixCertPathBuilderResult == null)
{
tbvPath.Remove((object)tbvCert);
}
return(pkixCertPathBuilderResult);
}
public virtual PkixCertPathValidatorResult Validate(PkixCertPath certPath, PkixParameters paramsPkix)
{
if (paramsPkix.GetTrustAnchors() == null)
{
throw new ArgumentException("trustAnchors is null, this is not allowed for certification path validation.", "parameters");
}
IList certificates = certPath.Certificates;
int count = certificates.Count;
if (certificates.Count == 0)
{
throw new PkixCertPathValidatorException("Certification path is empty.", null, certPath, 0);
}
ISet initialPolicies = paramsPkix.GetInitialPolicies();
TrustAnchor trustAnchor;
try
{
trustAnchor = PkixCertPathValidatorUtilities.FindTrustAnchor((X509Certificate)certificates[certificates.Count - 1], paramsPkix.GetTrustAnchors());
}
catch (Exception ex)
{
throw new PkixCertPathValidatorException(ex.Message, ex, certPath, certificates.Count - 1);
}
if (trustAnchor == null)
{
throw new PkixCertPathValidatorException("Trust anchor for certification path not found.", null, certPath, -1);
}
int i = 0;
IList[] array = new IList[count + 1];
for (int j = 0; j < array.Length; j++)
{
array[j] = Platform.CreateArrayList();
}
ISet set = new HashSet();
set.Add(Rfc3280CertPathUtilities.ANY_POLICY);
PkixPolicyNode pkixPolicyNode = new PkixPolicyNode(Platform.CreateArrayList(), 0, set, null, new HashSet(), Rfc3280CertPathUtilities.ANY_POLICY, false);
array[0].Add(pkixPolicyNode);
PkixNameConstraintValidator nameConstraintValidator = new PkixNameConstraintValidator();
ISet acceptablePolicies = new HashSet();
int num;
if (paramsPkix.IsExplicitPolicyRequired)
{
num = 0;
}
else
{
num = count + 1;
}
int inhibitAnyPolicy;
if (paramsPkix.IsAnyPolicyInhibited)
{
inhibitAnyPolicy = 0;
}
else
{
inhibitAnyPolicy = count + 1;
}
int policyMapping;
if (paramsPkix.IsPolicyMappingInhibited)
{
policyMapping = 0;
}
else
{
policyMapping = count + 1;
}
X509Certificate x509Certificate = trustAnchor.TrustedCert;
X509Name workingIssuerName;
AsymmetricKeyParameter asymmetricKeyParameter;
try
{
if (x509Certificate != null)
{
workingIssuerName = x509Certificate.SubjectDN;
asymmetricKeyParameter = x509Certificate.GetPublicKey();
}
else
{
workingIssuerName = new X509Name(trustAnchor.CAName);
asymmetricKeyParameter = trustAnchor.CAPublicKey;
}
}
catch (ArgumentException cause)
{
throw new PkixCertPathValidatorException("Subject of trust anchor could not be (re)encoded.", cause, certPath, -1);
}
try
{
PkixCertPathValidatorUtilities.GetAlgorithmIdentifier(asymmetricKeyParameter);
}
catch (PkixCertPathValidatorException cause2)
{
throw new PkixCertPathValidatorException("Algorithm identifier of public key of trust anchor could not be read.", cause2, certPath, -1);
}
int maxPathLength = count;
X509CertStoreSelector targetCertConstraints = paramsPkix.GetTargetCertConstraints();
if (targetCertConstraints != null && !targetCertConstraints.Match((X509Certificate)certificates[0]))
{
throw new PkixCertPathValidatorException("Target certificate in certification path does not match targetConstraints.", null, certPath, 0);
}
IList certPathCheckers = paramsPkix.GetCertPathCheckers();
IEnumerator enumerator = certPathCheckers.GetEnumerator();
while (enumerator.MoveNext())
{
((PkixCertPathChecker)enumerator.Current).Init(false);
}
X509Certificate x509Certificate2 = null;
for (i = certificates.Count - 1; i >= 0; i--)
{
int num2 = count - i;
x509Certificate2 = (X509Certificate)certificates[i];
Rfc3280CertPathUtilities.ProcessCertA(certPath, paramsPkix, i, asymmetricKeyParameter, workingIssuerName, x509Certificate);
Rfc3280CertPathUtilities.ProcessCertBC(certPath, i, nameConstraintValidator);
pkixPolicyNode = Rfc3280CertPathUtilities.ProcessCertD(certPath, i, acceptablePolicies, pkixPolicyNode, array, inhibitAnyPolicy);
pkixPolicyNode = Rfc3280CertPathUtilities.ProcessCertE(certPath, i, pkixPolicyNode);
Rfc3280CertPathUtilities.ProcessCertF(certPath, i, pkixPolicyNode, num);
if (num2 != count)
{
if (x509Certificate2 != null && x509Certificate2.Version == 1)
{
throw new PkixCertPathValidatorException("Version 1 certificates can't be used as CA ones.", null, certPath, i);
}
Rfc3280CertPathUtilities.PrepareNextCertA(certPath, i);
pkixPolicyNode = Rfc3280CertPathUtilities.PrepareCertB(certPath, i, array, pkixPolicyNode, policyMapping);
Rfc3280CertPathUtilities.PrepareNextCertG(certPath, i, nameConstraintValidator);
num = Rfc3280CertPathUtilities.PrepareNextCertH1(certPath, i, num);
policyMapping = Rfc3280CertPathUtilities.PrepareNextCertH2(certPath, i, policyMapping);
inhibitAnyPolicy = Rfc3280CertPathUtilities.PrepareNextCertH3(certPath, i, inhibitAnyPolicy);
num = Rfc3280CertPathUtilities.PrepareNextCertI1(certPath, i, num);
policyMapping = Rfc3280CertPathUtilities.PrepareNextCertI2(certPath, i, policyMapping);
inhibitAnyPolicy = Rfc3280CertPathUtilities.PrepareNextCertJ(certPath, i, inhibitAnyPolicy);
Rfc3280CertPathUtilities.PrepareNextCertK(certPath, i);
maxPathLength = Rfc3280CertPathUtilities.PrepareNextCertL(certPath, i, maxPathLength);
maxPathLength = Rfc3280CertPathUtilities.PrepareNextCertM(certPath, i, maxPathLength);
Rfc3280CertPathUtilities.PrepareNextCertN(certPath, i);
ISet set2 = x509Certificate2.GetCriticalExtensionOids();
if (set2 != null)
{
set2 = new HashSet(set2);
set2.Remove(X509Extensions.KeyUsage.Id);
set2.Remove(X509Extensions.CertificatePolicies.Id);
set2.Remove(X509Extensions.PolicyMappings.Id);
set2.Remove(X509Extensions.InhibitAnyPolicy.Id);
set2.Remove(X509Extensions.IssuingDistributionPoint.Id);
set2.Remove(X509Extensions.DeltaCrlIndicator.Id);
set2.Remove(X509Extensions.PolicyConstraints.Id);
set2.Remove(X509Extensions.BasicConstraints.Id);
set2.Remove(X509Extensions.SubjectAlternativeName.Id);
set2.Remove(X509Extensions.NameConstraints.Id);
}
else
{
set2 = new HashSet();
}
Rfc3280CertPathUtilities.PrepareNextCertO(certPath, i, set2, certPathCheckers);
x509Certificate = x509Certificate2;
workingIssuerName = x509Certificate.SubjectDN;
try
{
asymmetricKeyParameter = PkixCertPathValidatorUtilities.GetNextWorkingKey(certPath.Certificates, i);
}
catch (PkixCertPathValidatorException cause3)
{
throw new PkixCertPathValidatorException("Next working key could not be retrieved.", cause3, certPath, i);
}
PkixCertPathValidatorUtilities.GetAlgorithmIdentifier(asymmetricKeyParameter);
}
}
num = Rfc3280CertPathUtilities.WrapupCertA(num, x509Certificate2);
num = Rfc3280CertPathUtilities.WrapupCertB(certPath, i + 1, num);
ISet set3 = x509Certificate2.GetCriticalExtensionOids();
if (set3 != null)
{
set3 = new HashSet(set3);
set3.Remove(X509Extensions.KeyUsage.Id);
set3.Remove(X509Extensions.CertificatePolicies.Id);
set3.Remove(X509Extensions.PolicyMappings.Id);
set3.Remove(X509Extensions.InhibitAnyPolicy.Id);
set3.Remove(X509Extensions.IssuingDistributionPoint.Id);
set3.Remove(X509Extensions.DeltaCrlIndicator.Id);
set3.Remove(X509Extensions.PolicyConstraints.Id);
set3.Remove(X509Extensions.BasicConstraints.Id);
set3.Remove(X509Extensions.SubjectAlternativeName.Id);
set3.Remove(X509Extensions.NameConstraints.Id);
set3.Remove(X509Extensions.CrlDistributionPoints.Id);
}
else
{
set3 = new HashSet();
}
Rfc3280CertPathUtilities.WrapupCertF(certPath, i + 1, certPathCheckers, set3);
PkixPolicyNode pkixPolicyNode2 = Rfc3280CertPathUtilities.WrapupCertG(certPath, paramsPkix, initialPolicies, i + 1, array, pkixPolicyNode, acceptablePolicies);
if (num > 0 || pkixPolicyNode2 != null)
{
return(new PkixCertPathValidatorResult(trustAnchor, pkixPolicyNode2, x509Certificate2.GetPublicKey()));
}
throw new PkixCertPathValidatorException("Path processing failed on policy.", null, certPath, i);
}
public virtual PkixCertPathValidatorResult Validate(PkixCertPath certPath, PkixParameters paramsPkix)
{
//IL_0012: Unknown result type (might be due to invalid IL or missing references)
//IL_0170: Expected O, but got Unknown
if (paramsPkix.GetTrustAnchors() == null)
{
throw new ArgumentException("trustAnchors is null, this is not allowed for certification path validation.", "parameters");
}
global::System.Collections.IList certificates = certPath.Certificates;
int count = ((global::System.Collections.ICollection)certificates).get_Count();
if (((global::System.Collections.ICollection)certificates).get_Count() == 0)
{
throw new PkixCertPathValidatorException("Certification path is empty.", null, certPath, 0);
}
ISet initialPolicies = paramsPkix.GetInitialPolicies();
TrustAnchor trustAnchor;
try
{
trustAnchor = PkixCertPathValidatorUtilities.FindTrustAnchor((X509Certificate)certificates.get_Item(((global::System.Collections.ICollection)certificates).get_Count() - 1), paramsPkix.GetTrustAnchors());
}
catch (global::System.Exception ex)
{
throw new PkixCertPathValidatorException(ex.get_Message(), ex, certPath, ((global::System.Collections.ICollection)certificates).get_Count() - 1);
}
if (trustAnchor == null)
{
throw new PkixCertPathValidatorException("Trust anchor for certification path not found.", null, certPath, -1);
}
int num = 0;
global::System.Collections.IList[] array = new global::System.Collections.IList[count + 1];
for (int i = 0; i < array.Length; i++)
{
array[i] = Platform.CreateArrayList();
}
ISet set = new HashSet();
set.Add(Rfc3280CertPathUtilities.ANY_POLICY);
PkixPolicyNode pkixPolicyNode = new PkixPolicyNode(Platform.CreateArrayList(), 0, set, null, new HashSet(), Rfc3280CertPathUtilities.ANY_POLICY, critical: false);
array[0].Add((object)pkixPolicyNode);
PkixNameConstraintValidator nameConstraintValidator = new PkixNameConstraintValidator();
ISet acceptablePolicies = new HashSet();
int explicitPolicy = ((!paramsPkix.IsExplicitPolicyRequired) ? (count + 1) : 0);
int inhibitAnyPolicy = ((!paramsPkix.IsAnyPolicyInhibited) ? (count + 1) : 0);
int policyMapping = ((!paramsPkix.IsPolicyMappingInhibited) ? (count + 1) : 0);
X509Certificate x509Certificate = trustAnchor.TrustedCert;
X509Name workingIssuerName;
AsymmetricKeyParameter asymmetricKeyParameter;
try
{
if (x509Certificate != null)
{
workingIssuerName = x509Certificate.SubjectDN;
asymmetricKeyParameter = x509Certificate.GetPublicKey();
}
else
{
workingIssuerName = new X509Name(trustAnchor.CAName);
asymmetricKeyParameter = trustAnchor.CAPublicKey;
}
}
catch (ArgumentException val)
{
ArgumentException cause = val;
throw new PkixCertPathValidatorException("Subject of trust anchor could not be (re)encoded.", (global::System.Exception)(object) cause, certPath, -1);
}
try
{
PkixCertPathValidatorUtilities.GetAlgorithmIdentifier(asymmetricKeyParameter);
}
catch (PkixCertPathValidatorException cause2)
{
throw new PkixCertPathValidatorException("Algorithm identifier of public key of trust anchor could not be read.", cause2, certPath, -1);
}
int maxPathLength = count;
X509CertStoreSelector targetCertConstraints = paramsPkix.GetTargetCertConstraints();
if (targetCertConstraints != null && !targetCertConstraints.Match((X509Certificate)certificates.get_Item(0)))
{
throw new PkixCertPathValidatorException("Target certificate in certification path does not match targetConstraints.", null, certPath, 0);
}
global::System.Collections.IList certPathCheckers = paramsPkix.GetCertPathCheckers();
global::System.Collections.IEnumerator enumerator = ((global::System.Collections.IEnumerable)certPathCheckers).GetEnumerator();
while (enumerator.MoveNext())
{
((PkixCertPathChecker)enumerator.get_Current()).Init(forward: false);
}
X509Certificate x509Certificate2 = null;
for (num = ((global::System.Collections.ICollection)certificates).get_Count() - 1; num >= 0; num--)
{
int num2 = count - num;
x509Certificate2 = (X509Certificate)certificates.get_Item(num);
Rfc3280CertPathUtilities.ProcessCertA(certPath, paramsPkix, num, asymmetricKeyParameter, workingIssuerName, x509Certificate);
Rfc3280CertPathUtilities.ProcessCertBC(certPath, num, nameConstraintValidator);
pkixPolicyNode = Rfc3280CertPathUtilities.ProcessCertD(certPath, num, acceptablePolicies, pkixPolicyNode, array, inhibitAnyPolicy);
pkixPolicyNode = Rfc3280CertPathUtilities.ProcessCertE(certPath, num, pkixPolicyNode);
Rfc3280CertPathUtilities.ProcessCertF(certPath, num, pkixPolicyNode, explicitPolicy);
if (num2 != count)
{
if (x509Certificate2 != null && x509Certificate2.Version == 1)
{
throw new PkixCertPathValidatorException("Version 1 certificates can't be used as CA ones.", null, certPath, num);
}
Rfc3280CertPathUtilities.PrepareNextCertA(certPath, num);
pkixPolicyNode = Rfc3280CertPathUtilities.PrepareCertB(certPath, num, array, pkixPolicyNode, policyMapping);
Rfc3280CertPathUtilities.PrepareNextCertG(certPath, num, nameConstraintValidator);
explicitPolicy = Rfc3280CertPathUtilities.PrepareNextCertH1(certPath, num, explicitPolicy);
policyMapping = Rfc3280CertPathUtilities.PrepareNextCertH2(certPath, num, policyMapping);
inhibitAnyPolicy = Rfc3280CertPathUtilities.PrepareNextCertH3(certPath, num, inhibitAnyPolicy);
explicitPolicy = Rfc3280CertPathUtilities.PrepareNextCertI1(certPath, num, explicitPolicy);
policyMapping = Rfc3280CertPathUtilities.PrepareNextCertI2(certPath, num, policyMapping);
inhibitAnyPolicy = Rfc3280CertPathUtilities.PrepareNextCertJ(certPath, num, inhibitAnyPolicy);
Rfc3280CertPathUtilities.PrepareNextCertK(certPath, num);
maxPathLength = Rfc3280CertPathUtilities.PrepareNextCertL(certPath, num, maxPathLength);
maxPathLength = Rfc3280CertPathUtilities.PrepareNextCertM(certPath, num, maxPathLength);
Rfc3280CertPathUtilities.PrepareNextCertN(certPath, num);
ISet criticalExtensionOids = x509Certificate2.GetCriticalExtensionOids();
if (criticalExtensionOids != null)
{
criticalExtensionOids = new HashSet(criticalExtensionOids);
criticalExtensionOids.Remove(X509Extensions.KeyUsage.Id);
criticalExtensionOids.Remove(X509Extensions.CertificatePolicies.Id);
criticalExtensionOids.Remove(X509Extensions.PolicyMappings.Id);
criticalExtensionOids.Remove(X509Extensions.InhibitAnyPolicy.Id);
criticalExtensionOids.Remove(X509Extensions.IssuingDistributionPoint.Id);
criticalExtensionOids.Remove(X509Extensions.DeltaCrlIndicator.Id);
criticalExtensionOids.Remove(X509Extensions.PolicyConstraints.Id);
criticalExtensionOids.Remove(X509Extensions.BasicConstraints.Id);
criticalExtensionOids.Remove(X509Extensions.SubjectAlternativeName.Id);
criticalExtensionOids.Remove(X509Extensions.NameConstraints.Id);
}
else
{
criticalExtensionOids = new HashSet();
}
Rfc3280CertPathUtilities.PrepareNextCertO(certPath, num, criticalExtensionOids, certPathCheckers);
x509Certificate = x509Certificate2;
workingIssuerName = x509Certificate.SubjectDN;
try
{
asymmetricKeyParameter = PkixCertPathValidatorUtilities.GetNextWorkingKey(certPath.Certificates, num);
}
catch (PkixCertPathValidatorException cause3)
{
throw new PkixCertPathValidatorException("Next working key could not be retrieved.", cause3, certPath, num);
}
PkixCertPathValidatorUtilities.GetAlgorithmIdentifier(asymmetricKeyParameter);
}
}
explicitPolicy = Rfc3280CertPathUtilities.WrapupCertA(explicitPolicy, x509Certificate2);
explicitPolicy = Rfc3280CertPathUtilities.WrapupCertB(certPath, num + 1, explicitPolicy);
ISet criticalExtensionOids2 = x509Certificate2.GetCriticalExtensionOids();
if (criticalExtensionOids2 != null)
{
criticalExtensionOids2 = new HashSet(criticalExtensionOids2);
criticalExtensionOids2.Remove(X509Extensions.KeyUsage.Id);
criticalExtensionOids2.Remove(X509Extensions.CertificatePolicies.Id);
criticalExtensionOids2.Remove(X509Extensions.PolicyMappings.Id);
criticalExtensionOids2.Remove(X509Extensions.InhibitAnyPolicy.Id);
criticalExtensionOids2.Remove(X509Extensions.IssuingDistributionPoint.Id);
criticalExtensionOids2.Remove(X509Extensions.DeltaCrlIndicator.Id);
criticalExtensionOids2.Remove(X509Extensions.PolicyConstraints.Id);
criticalExtensionOids2.Remove(X509Extensions.BasicConstraints.Id);
criticalExtensionOids2.Remove(X509Extensions.SubjectAlternativeName.Id);
criticalExtensionOids2.Remove(X509Extensions.NameConstraints.Id);
criticalExtensionOids2.Remove(X509Extensions.CrlDistributionPoints.Id);
}
else
{
criticalExtensionOids2 = new HashSet();
}
Rfc3280CertPathUtilities.WrapupCertF(certPath, num + 1, certPathCheckers, criticalExtensionOids2);
PkixPolicyNode pkixPolicyNode2 = Rfc3280CertPathUtilities.WrapupCertG(certPath, paramsPkix, initialPolicies, num + 1, array, pkixPolicyNode, acceptablePolicies);
if (explicitPolicy > 0 || pkixPolicyNode2 != null)
{
return(new PkixCertPathValidatorResult(trustAnchor, pkixPolicyNode2, x509Certificate2.GetPublicKey()));
}
throw new PkixCertPathValidatorException("Path processing failed on policy.", null, certPath, num);
}