public static string ConvertDistinguishedNameToString(X500DistinguishedName dnString)
{
string name = dnString.Name;
bool flag = false;
string[] strArray = dnString.Decode(X500DistinguishedNameFlags.UseNewLines).Split(new char[] { '\n', '\r' }, StringSplitOptions.RemoveEmptyEntries);
if (strArray.Length > 0)
{
flag = true;
string pairAndValue = string.Empty;
for (int i = 0; i < strArray.Length; i++)
{
pairAndValue = strArray[i];
Pair pair = ConvertStringToPair(pairAndValue);
if (string.Equals((string) pair.First, "CN", StringComparison.OrdinalIgnoreCase))
{
name = (string) pair.Second;
flag = false;
break;
}
}
}
else
{
name = (string) ConvertStringToPair(name).Second;
flag = false;
}
if (flag)
{
name = dnString.Name;
}
return name;
}
public static X509Certificate2 CreateCertificate(X500DistinguishedName subjectName, string friendlyName)
{
var key = Create2048RsaKey();
var cert = CreateSelfSignedCertificate(key, subjectName);
cert.FriendlyName = friendlyName;
return cert;
}
private static X509Certificate2 CreateSelfSignedCertificate(CngKey key, X500DistinguishedName subjectName)
{
using (SafeCertContextHandle selfSignedCertHandle = CreateSelfSignedCertificate(key,
true,
subjectName.RawData,
X509CertificateCreationOptions.None, // NONE
RsaSha1Oid,
DateTime.UtcNow,
DateTime.UtcNow.AddYears(1)))
{
X509Certificate2 certificate = null;
bool addedRef = false;
RuntimeHelpers.PrepareConstrainedRegions();
try
{
selfSignedCertHandle.DangerousAddRef(ref addedRef);
certificate = new X509Certificate2(selfSignedCertHandle.DangerousGetHandle());
}
finally
{
if (addedRef)
{
selfSignedCertHandle.DangerousRelease();
}
}
key.Dispose();
return certificate;
}
}
public SelfSignedCertProperties()
{
DateTime today = DateTime.Today;
ValidFrom = today.AddDays(-1);
ValidTo = today.AddYears(10);
Name = new X500DistinguishedName("cn=self");
KeyBitLength = 4096;
}
/// <summary>
/// Create a RSA based certificate (to be used with encryption) with the given options
/// </summary>
/// <param name="buildOptions">Allows for more advanced configuration</param>
/// <returns>An exportable X509Certificate2 object (with private key)</returns>
public static X509Certificate2 CreateNewCertificate(RSACertificateBuilderOptions buildOptions)
{
if (buildOptions == null)
{
throw new ArgumentNullException("buildOptions");
}
string keyName = buildOptions.RSAKeyName ?? "RSAKey";
CngKey objCngKey = null;
if (CngKey.Exists(keyName))
{
objCngKey = CngKey.Open(keyName);
objCngKey.Delete();
}
var creationParameters = new CngKeyCreationParameters();
creationParameters.ExportPolicy = CngExportPolicies.AllowExport;
creationParameters.KeyUsage = CngKeyUsages.AllUsages;
creationParameters.Provider = CngProvider.MicrosoftSoftwareKeyStorageProvider;
var keySizeProperty = new CngProperty("Length", BitConverter.GetBytes(buildOptions.KeySize ?? 4096), CngPropertyOptions.None);
creationParameters.Parameters.Add(keySizeProperty);
objCngKey = CngKey.Create(CngAlgorithm2.Rsa, keyName, creationParameters);
var name = new X500DistinguishedName(buildOptions.FullSubjectName);
X509CertificateSignatureAlgorithm certAlg;
switch (buildOptions.HashingMethod ?? HashingMethods.Sha256)
{
case HashingMethods.Sha1:
certAlg = X509CertificateSignatureAlgorithm.RsaSha1;
break;
case HashingMethods.Sha256:
certAlg = X509CertificateSignatureAlgorithm.RsaSha256;
break;
case HashingMethods.Sha384:
certAlg = X509CertificateSignatureAlgorithm.RsaSha384;
break;
case HashingMethods.Sha512:
certAlg = X509CertificateSignatureAlgorithm.RsaSha512;
break;
default:
throw new InvalidOperationException("Selected hashing method is not supported");
}
var options = new X509CertificateCreationParameters(name)
{
SignatureAlgorithm = certAlg,
TakeOwnershipOfKey = true
};
return objCngKey.CreateSelfSignedCertificate(options);
}
public override void Reset()
{
_lazyRawData = null;
_lazySignatureAlgorithm = null;
_lazyVersion = 0;
_lazySubjectName = null;
_lazyIssuerName = null;
_lazyPublicKey = null;
_lazyPrivateKey = null;
_lazyExtensions = null;
base.Reset();
}
public SimpleCA(string countryCode, string organization, string orgunit, string commonName)
{
var distinguishedName = $"C={countryCode};O={organization};OU={orgunit};CN={commonName}";
//var distinguishedName = "C=US;O=Microsoft;OU=WGA;CN=TedSt";
//CN={commonName}/OU={organizationUnit}/O={organization}/DC={domain}/STREET={address}/L={locality}/ST={state}/C={country}/DC={domainComponent}"
var dn = new System.Security.Cryptography.X509Certificates.X500DistinguishedName(
distinguishedName
);
var key = System.Security.Cryptography.RSA.Create();
key.KeySize = 4096;
var hash = System.Security.Cryptography.HashAlgorithmName.SHA512;
var req = new System.Security.Cryptography.X509Certificates.CertificateRequest(dn, key, hash, RSASignaturePadding.Pss);
var q = Oid.FromFriendlyName("", OidGroup.EnhancedKeyUsage);
Oid.FromOidValue("", OidGroup.EnhancedKeyUsage);
var r = new OidCollection();
r.Add(q);
var v = new X509EnhancedKeyUsageExtension(r, false);
req.CertificateExtensions.Add(SetEnhancedKeyUsage(keyCertSign: true));
req.CertificateExtensions.Add(SetBasicConstraints(true));
req.CertificateExtensions.Add(v);
var now = DateTimeOffset.UtcNow;
var startDate = now - TimeSpan.FromMinutes(5);
var endDate = DateTimeOffset.UtcNow + TimeSpan.FromDays(365.25 * 10);
rootCert = req.CreateSelfSigned(startDate, endDate);
rootKey = key;
var rootKeyChain = rootCert.Export(X509ContentType.Pkcs12);
}
public X500DistinguishedName(X500DistinguishedName distinguishedName) : base(distinguishedName)
{
this.m_distinguishedName = distinguishedName.Name;
}
void m_decode(Byte[] rawData)
{
try {
Type = X509CrlType.BaseCrl;
var signedInfo = new SignedContentBlob(rawData, ContentBlobType.SignedBlob);
// signature and alg
signature = signedInfo.Signature.Value;
sigUnused = signedInfo.Signature.UnusedBits;
SignatureAlgorithm = signedInfo.SignatureAlgorithm.AlgorithmId;
// tbs
Asn1Reader asn = new Asn1Reader(signedInfo.ToBeSignedData);
if (!asn.MoveNext())
{
throw new Asn1InvalidTagException();
}
// version
if (asn.Tag == (Byte)Asn1Type.INTEGER)
{
Version = (Int32)Asn1Utils.DecodeInteger(asn.GetTagRawData()) + 1;
asn.MoveNextCurrentLevel();
}
else
{
Version = 1;
}
// hash algorithm
var h = new AlgorithmIdentifier(asn.GetTagRawData());
if (h.AlgorithmId.Value != SignatureAlgorithm.Value)
{
throw new CryptographicException("Algorithm mismatch.");
}
if (!asn.MoveNextCurrentLevel())
{
throw new Asn1InvalidTagException();
}
// issuer
IssuerName = new X500DistinguishedName(asn.GetTagRawData());
// NextUpdate, RevokedCerts and Extensions are optional. Ref: RFC5280, p.118
if (!asn.MoveNextCurrentLevel())
{
throw new Asn1InvalidTagException();
}
switch (asn.Tag)
{
case (Byte)Asn1Type.UTCTime:
ThisUpdate = new Asn1UtcTime(asn.GetTagRawData()).Value;
break;
case (Byte)Asn1Type.GeneralizedTime:
ThisUpdate = Asn1Utils.DecodeGeneralizedTime(asn.GetTagRawData());
break;
default:
throw new Asn1InvalidTagException();
}
if (!asn.MoveNextCurrentLevel())
{
return;
}
switch (asn.Tag)
{
case (Byte)Asn1Type.UTCTime:
case (Byte)Asn1Type.GeneralizedTime:
switch (asn.Tag)
{
case (Byte)Asn1Type.UTCTime:
NextUpdate = new Asn1UtcTime(asn.GetTagRawData()).Value;
break;
case (Byte)Asn1Type.GeneralizedTime:
NextUpdate = Asn1Utils.DecodeGeneralizedTime(asn.GetTagRawData());
break;
default:
throw new Asn1InvalidTagException();
}
if (!asn.MoveNextCurrentLevel())
{
return;
}
if (asn.Tag == 48)
{
getRevCerts(asn);
if (!asn.MoveNextCurrentLevel())
{
return;
}
getExts(asn);
}
else
{
getExts(asn);
}
break;
case 48:
if (asn.Tag == 48)
{
getRevCerts(asn);
if (!asn.MoveNextCurrentLevel())
{
return;
}
getExts(asn);
}
else
{
getExts(asn);
}
break;
default:
getExts(asn);
break;
}
} catch (Exception e) {
throw new CryptographicException("Cannot find the requested object.", e);
}
}
private static String FormatX509Name(X500DistinguishedName name)
{
Asn1StreamParser parser = new Asn1StreamParser(name.RawData);
X509Name _name = X509Name.GetInstance(parser.ReadObject().ToAsn1Object());
return _name.ToString(true, X509Name.RFC1779Symbols);
}
//
// Used only by client SSL code, never returns null.
//
private string[] GetIssuers()
{
string[] issuers = new string[0];
if (IsValidContext)
{
#if MONO_NOT_IMPLEMENTED
IssuerListInfoEx issuerList = (IssuerListInfoEx)SSPIWrapper.QueryContextAttributes(m_SecModule, m_SecurityContext, ContextAttribute.IssuerListInfoEx);
try
{
if (issuerList.cIssuers>0) {
unsafe {
uint count = issuerList.cIssuers;
issuers = new string[issuerList.cIssuers];
_CERT_CHAIN_ELEMENT* pIL = (_CERT_CHAIN_ELEMENT*)issuerList.aIssuers.DangerousGetHandle();
for (uint i =0; i<count; ++i) {
_CERT_CHAIN_ELEMENT* pIL2 = pIL + i;
uint size = pIL2->cbSize;
byte* ptr = (byte*)(pIL2->pCertContext);
byte[] x = new byte[size];
for (uint j=0; j<size; j++) {
x[j] = *(ptr + j);
}
// Oid oid = new Oid();
// oid.Value = "1.3.6.1.5.5.7.3.2";
// Value of issuers[i] can be an empty string when size of x is 0.
X500DistinguishedName x500DistinguishedName = new X500DistinguishedName(x);
issuers[i] = x500DistinguishedName.Name;
GlobalLog.Print("SecureChannel#" + ValidationHelper.HashString(this) + "::GetIssuers() IssuerListEx[" + i + "]:" + issuers[i]);
}
}
}
}
finally
{
if (issuerList.aIssuers != null)
{
issuerList.aIssuers.Close();
}
}
#endif
}
return issuers;
}
public void RFC3280MandatoryAttributeTypes ()
{
string expected = "dnQualifier=CA, OID.2.5.4.5=345, S=Maryland, DC=testcertificates, DC=gov, O=Test Certificates, C=US";
X509Certificate2 cert = new X509Certificate2 (RFC3280MandatoryAttributeTypesCACert_crt);
// note: strangely the (also CryptoAPI based) certificate viewer in Windows seems to resolve 2.5.4.5 as "Serial Number"
Assert.AreEqual (expected, cert.SubjectName.Name, "SubjectName");
X500DistinguishedName build = new X500DistinguishedName (expected);
Assert.AreEqual (expected, build.Name, "Name");
}
public void T61String ()
{
// http://bugzilla.ximian.com/show_bug.cgi?id=77295
byte[] sn = { 0x30, 0x81, 0xB5, 0x31, 0x0B, 0x30, 0x09, 0x06, 0x03, 0x55, 0x04, 0x06, 0x13, 0x02, 0x44, 0x4B, 0x31, 0x2D, 0x30, 0x2B, 0x06,
0x03, 0x55, 0x04, 0x0A, 0x14, 0x24, 0x48, 0x65, 0x64, 0x65, 0x62, 0x79, 0x27, 0x73, 0x20, 0x4D, 0xF8, 0x62, 0x65, 0x6C, 0x68, 0x61,
0x6E, 0x64, 0x65, 0x6C, 0x20, 0x2F, 0x2F, 0x20, 0x43, 0x56, 0x52, 0x3A, 0x31, 0x33, 0x34, 0x37, 0x31, 0x39, 0x36, 0x37, 0x31, 0x2F,
0x30, 0x2D, 0x06, 0x03, 0x55, 0x04, 0x03, 0x14, 0x26, 0x48, 0x65, 0x64, 0x65, 0x62, 0x79, 0x27, 0x73, 0x20, 0x4D, 0xF8, 0x62, 0x65,
0x6C, 0x68, 0x61, 0x6E, 0x64, 0x65, 0x6C, 0x20, 0x2D, 0x20, 0x53, 0x61, 0x6C, 0x67, 0x73, 0x61, 0x66, 0x64, 0x65, 0x6C, 0x69, 0x6E,
0x67, 0x65, 0x6E, 0x31, 0x1E, 0x30, 0x1C, 0x06, 0x09, 0x2A, 0x86, 0x48, 0x86, 0xF7, 0x0D, 0x01, 0x09, 0x01, 0x16, 0x0F, 0x76, 0x68,
0x6D, 0x40, 0x75, 0x73, 0x65, 0x2E, 0x74, 0x65, 0x73, 0x74, 0x2E, 0x64, 0x6B, 0x31, 0x26, 0x30, 0x24, 0x06, 0x03, 0x55, 0x04, 0x05,
0x13, 0x1D, 0x43, 0x56, 0x52, 0x3A, 0x31, 0x33, 0x34, 0x37, 0x31, 0x39, 0x36, 0x37, 0x2D, 0x55, 0x49, 0x44, 0x3A, 0x31, 0x32, 0x31,
0x32, 0x31, 0x32, 0x31, 0x32, 0x31, 0x32, 0x31, 0x32 };
X500DistinguishedName dn = new X500DistinguishedName (sn);
string subject = "OID.2.5.4.5=CVR:13471967-UID:121212121212, [email protected], CN=Hedeby's Møbelhandel - Salgsafdelingen, O=Hedeby's Møbelhandel // CVR:13471967, C=DK";
Assert.AreEqual (subject, dn.Name, "Name");
}
public string GetNameInfo(X509NameType nameType, bool forIssuer)
{
// Algorithm behaviors (pseudocode). When forIssuer is true, replace "Subject" with "Issuer" and
// SAN (Subject Alternative Names) with IAN (Issuer Alternative Names).
//
// SimpleName: Subject[CN] ?? Subject[OU] ?? Subject[O] ?? Subject[E] ?? Subject.Rdns.FirstOrDefault() ??
// SAN.Entries.FirstOrDefault(type == GEN_EMAIL);
// EmailName: SAN.Entries.FirstOrDefault(type == GEN_EMAIL) ?? Subject[E];
// UpnName: SAN.Entries.FirsOrDefaultt(type == GEN_OTHER && entry.AsOther().OID == szOidUpn).AsOther().Value;
// DnsName: SAN.Entries.FirstOrDefault(type == GEN_DNS) ?? Subject[CN];
// DnsFromAlternativeName: SAN.Entries.FirstOrDefault(type == GEN_DNS);
// UrlName: SAN.Entries.FirstOrDefault(type == GEN_URI);
if (nameType == X509NameType.SimpleName)
{
X500DistinguishedName name = forIssuer ? Issuer : Subject;
string?candidate = GetSimpleNameInfo(name);
if (candidate != null)
{
return(candidate);
}
}
// Check the Subject Alternative Name (or Issuer Alternative Name) for the right value;
{
string extensionId = forIssuer ? Oids.IssuerAltName : Oids.SubjectAltName;
GeneralNameType?matchType = null;
string? otherOid = null;
// Currently all X509NameType types have a path where they look at the SAN/IAN,
// but we need to figure out which kind they want.
switch (nameType)
{
case X509NameType.DnsName:
case X509NameType.DnsFromAlternativeName:
matchType = GeneralNameType.DnsName;
break;
case X509NameType.SimpleName:
case X509NameType.EmailName:
matchType = GeneralNameType.Email;
break;
case X509NameType.UpnName:
matchType = GeneralNameType.OtherName;
otherOid = Oids.UserPrincipalName;
break;
case X509NameType.UrlName:
matchType = GeneralNameType.UniformResourceIdentifier;
break;
}
if (matchType.HasValue)
{
foreach (X509Extension extension in Extensions)
{
if (extension.Oid !.Value == extensionId)
{
string?candidate = FindAltNameMatch(extension.RawData, matchType.Value, otherOid);
if (candidate != null)
{
return(candidate);
}
}
}
}
else
{
Debug.Fail($"Unresolved matchType for X509NameType.{nameType}");
}
}
// Subject-based fallback
{
string?expectedKey = null;
switch (nameType)
{
case X509NameType.EmailName:
expectedKey = Oids.EmailAddress;
break;
case X509NameType.DnsName:
// Note: This does not include DnsFromAlternativeName, since
// the subject (or issuer) is not the Alternative Name.
expectedKey = Oids.CommonName;
break;
}
if (expectedKey != null)
{
X500DistinguishedName name = forIssuer ? Issuer : Subject;
foreach (var kvp in ReadReverseRdns(name))
{
if (kvp.Key == expectedKey)
{
return(kvp.Value);
}
}
}
}
return("");
}
public void Constructor_X500DistinguishedName ()
{
X500DistinguishedName dn = new X500DistinguishedName (x509a.IssuerName);
Assert.IsNotNull (dn.Oid, "Oid");
Assert.IsNull (dn.Oid.Value, "Oid.Value");
Assert.IsNull (dn.Oid.FriendlyName, "Oid.FriendlyName");
RsaIssuer (dn);
}
public X509Certificate2 Create(X500DistinguishedName issuerName, X509SignatureGenerator generator, System.DateTimeOffset notBefore, System.DateTimeOffset notAfter, byte[] serialNumber) => throw new PlatformNotSupportedException();
public X500DistinguishedName(X500DistinguishedName distinguishedName)
: base(distinguishedName)
{
_lazyDistinguishedName = distinguishedName.Name;
}
public CertificateRequest(X500DistinguishedName subjectName, PublicKey publicKey, HashAlgorithmName hashAlgorithm) => throw new PlatformNotSupportedException();
public CertificateRequest(X500DistinguishedName subjectName, RSA key, HashAlgorithmName hashAlgorithm, RSASignaturePadding padding) => throw new PlatformNotSupportedException();
/// <summary>
/// Sign the current certificate request to create a chain-signed or self-signed certificate.
/// </summary>
/// <param name="issuerName">The X500DistinguishedName for the Issuer</param>
/// <param name="generator">
/// An <see cref="X509SignatureGenerator"/> representing the issuing certificate authority.
/// </param>
/// <param name="notBefore">
/// The oldest date and time where this certificate is considered valid.
/// Typically <see cref="DateTimeOffset.UtcNow"/>, plus or minus a few seconds.
/// </param>
/// <param name="notAfter">
/// The date and time where this certificate is no longer considered valid.
/// </param>
/// <param name="serialNumber">
/// The serial number to use for the new certificate. This value should be unique per issuer.
/// The value is interpreted as an unsigned (big) integer in big endian byte ordering.
/// </param>
/// <returns>
/// The ASN.1 DER-encoded certificate, suitable to be passed to <see cref="X509Certificate2(byte[])"/>.
/// </returns>
/// <exception cref="ArgumentNullException"><paramref name="issuerName"/> is null.</exception>
/// <exception cref="ArgumentNullException"><paramref name="generator"/> is null.</exception>
/// <exception cref="ArgumentException">
/// <paramref name="notAfter"/> represents a date and time before <paramref name="notBefore"/>.
/// </exception>
/// <exception cref="ArgumentException"><paramref name="serialNumber"/> is null or has length 0.</exception>
/// <exception cref="CryptographicException">Any error occurs during the signing operation.</exception>
public X509Certificate2 Create(
X500DistinguishedName issuerName,
X509SignatureGenerator generator,
DateTimeOffset notBefore,
DateTimeOffset notAfter,
byte[] serialNumber)
{
if (issuerName == null)
{
throw new ArgumentNullException(nameof(issuerName));
}
if (generator == null)
{
throw new ArgumentNullException(nameof(generator));
}
if (notAfter < notBefore)
{
throw new ArgumentException(SR.Cryptography_CertReq_DatesReversed);
}
if (serialNumber == null || serialNumber.Length < 1)
{
throw new ArgumentException(SR.Arg_EmptyOrNullArray, nameof(serialNumber));
}
byte[] signatureAlgorithm = generator.GetSignatureAlgorithmIdentifier(HashAlgorithm);
AlgorithmIdentifierAsn signatureAlgorithmAsn;
// Deserialization also does validation of the value (except for Parameters, which have to be validated separately).
signatureAlgorithmAsn = AlgorithmIdentifierAsn.Decode(signatureAlgorithm, AsnEncodingRules.DER);
if (signatureAlgorithmAsn.Parameters.HasValue)
{
Helpers.ValidateDer(signatureAlgorithmAsn.Parameters.Value);
}
TbsCertificateAsn tbsCertificate = new TbsCertificateAsn
{
Version = 2,
SerialNumber = NormalizeSerialNumber(serialNumber),
SignatureAlgorithm = signatureAlgorithmAsn,
Issuer = issuerName.RawData,
SubjectPublicKeyInfo = new SubjectPublicKeyInfoAsn
{
Algorithm = new AlgorithmIdentifierAsn
{
Algorithm = PublicKey.Oid,
Parameters = PublicKey.EncodedParameters.RawData,
},
SubjectPublicKey = PublicKey.EncodedKeyValue.RawData,
},
Validity = new ValidityAsn(notBefore, notAfter),
Subject = SubjectName.RawData,
};
if (CertificateExtensions.Count > 0)
{
HashSet <string> usedOids = new HashSet <string>(CertificateExtensions.Count);
List <X509ExtensionAsn> extensionAsns = new List <X509ExtensionAsn>(CertificateExtensions.Count);
// An interesting quirk of skipping null values here is that
// Extensions.Count == 0 => no extensions
// Extensions.ContainsOnly(null) => empty extensions list
foreach (X509Extension extension in CertificateExtensions)
{
if (extension == null)
{
continue;
}
if (!usedOids.Add(extension.Oid.Value))
{
throw new InvalidOperationException(
SR.Format(SR.Cryptography_CertReq_DuplicateExtension, extension.Oid.Value));
}
extensionAsns.Add(new X509ExtensionAsn(extension, false));
}
tbsCertificate.Extensions = extensionAsns.ToArray();
}
using (AsnWriter writer = new AsnWriter(AsnEncodingRules.DER))
using (AsnWriter signedWriter = new AsnWriter(AsnEncodingRules.DER))
{
tbsCertificate.Encode(writer);
byte[] encodedTbsCertificate = writer.Encode();
CertificateAsn certificate = new CertificateAsn
{
TbsCertificate = tbsCertificate,
SignatureAlgorithm = signatureAlgorithmAsn,
SignatureValue = generator.SignData(encodedTbsCertificate, HashAlgorithm),
};
certificate.Encode(signedWriter);
return(new X509Certificate2(signedWriter.Encode()));
}
}
// *** certificate chain/path validation stuff ***
// Currently a subset of RFC3280 (hopefully a full implementation someday)
private void ValidateChain (X509ChainStatusFlags flag)
{
// 'n' should be the root certificate...
int n = elements.Count - 1;
X509Certificate2 certificate = elements [n].Certificate;
// ... and, if so, must be treated outside the chain...
if (((flag & X509ChainStatusFlags.PartialChain) == 0)) {
Process (n);
// deal with the case where the chain == the root certificate
// (which isn't for RFC3280) part of the chain
if (n == 0) {
elements [0].UncompressFlags ();
return;
}
// skip the root certificate when processing the chain (in 6.1.3)
n--;
}
// ... unless the chain is a partial one (then we start with that one)
// 6.1.1 - Inputs
// 6.1.1.a - a prospective certificate path of length n (i.e. elements)
// 6.1.1.b - the current date/time (i.e. ChainPolicy.VerificationTime)
// 6.1.1.c - user-initial-policy-set (i.e. ChainPolicy.CertificatePolicy)
// 6.1.1.d - the trust anchor information (i.e. certificate, unless it's a partial chain)
// 6.1.1.e - initial-policy-mapping-inhibit (NOT SUPPORTED BY THE API)
// 6.1.1.f - initial-explicit-policy (NOT SUPPORTED BY THE API)
// 6.1.1.g - initial-any-policy-inhibit (NOT SUPPORTED BY THE API)
// 6.1.2 - Initialization (incomplete)
// 6.1.2.a-f - policy stuff, some TODO, some not supported
// 6.1.2.g - working public key algorithm
// working_public_key_algorithm = certificate.PublicKey.Oid.Value;
// 6.1.2.h-i - our key contains both the "working public key" and "working public key parameters" data
working_public_key = certificate.PublicKey.Key;
// 6.1.2.j - working issuer name
working_issuer_name = certificate.IssuerName;
// 6.1.2.k - this integer is initialized to n, is decremented for each non-self-issued, certificate and
// may be reduced to the value in the path length constraint field
max_path_length = n;
// 6.1.3 - Basic Certificate Processing
// note: loop looks reversed (the list is) but we process this part just like RFC3280 does
for (int i = n; i > 0; i--) {
Process (i);
// 6.1.4 - preparation for certificate i+1 (for not with i+1, or i-1 in our loop)
PrepareForNextCertificate (i);
}
Process (0);
// 6.1.3.a.3 - revocation checks
CheckRevocationOnChain (flag);
// 6.1.5 - Wrap-up procedure
WrapUp ();
}
private void Process(int n)
{
X509ChainElement element = elements [n];
X509Certificate2 certificate = element.Certificate;
// pre-step: DSA certificates may inherit the parameters of their CA
if ((n != elements.Count - 1) && (certificate.MonoCertificate.KeyAlgorithm == "1.2.840.10040.4.1"))
{
if (certificate.MonoCertificate.KeyAlgorithmParameters == null)
{
X509Certificate2 parent = elements [n + 1].Certificate;
certificate.MonoCertificate.KeyAlgorithmParameters = parent.MonoCertificate.KeyAlgorithmParameters;
}
}
bool root = (working_public_key == null);
// 6.1.3.a.1 - check signature (with special case to deal with root certificates)
if (!IsSignedWith(certificate, root ? certificate.PublicKey.Key : working_public_key))
{
// another special case where only an end-entity is available and can't be verified.
// In this case we do not report an invalid signature (since this is unknown)
if (root || (n != elements.Count - 1) || IsSelfIssued(certificate))
{
element.StatusFlags |= X509ChainStatusFlags.NotSignatureValid;
}
}
// 6.1.3.a.2 - check validity period
if ((ChainPolicy.VerificationTime < certificate.NotBefore) ||
(ChainPolicy.VerificationTime > certificate.NotAfter))
{
element.StatusFlags |= X509ChainStatusFlags.NotTimeValid;
}
// TODO - for X509ChainStatusFlags.NotTimeNested (needs global structure)
// note: most of them don't apply to the root certificate
if (root)
{
return;
}
// 6.1.3.a.3 - revocation check (we're doing at the last stage)
// note: you revoke a trusted root by removing it from your trusted store (i.e. no CRL can do this job)
// 6.1.3.a.4 - check certificate issuer name
if (!X500DistinguishedName.AreEqual(certificate.IssuerName, working_issuer_name))
{
// NOTE: this is not the "right" error flag, but it's the closest one defined
element.StatusFlags |= X509ChainStatusFlags.InvalidNameConstraints;
}
if (!IsSelfIssued(certificate) && (n != 0))
{
// TODO 6.1.3.b - subject name in the permitted_subtrees ...
// TODO 6.1.3.c - subject name not within excluded_subtrees...
// TODO - check for X509ChainStatusFlags.InvalidNameConstraint
// TODO - check for X509ChainStatusFlags.HasNotSupportedNameConstraint
// TODO - check for X509ChainStatusFlags.HasNotPermittedNameConstraint
// TODO - check for X509ChainStatusFlags.HasExcludedNameConstraint
}
// TODO 6.1.3.d - check if certificate policies extension is present
//if (false) {
// TODO - for X509ChainStatusFlags.InvalidPolicyConstraints
// using X509ChainPolicy.ApplicationPolicy and X509ChainPolicy.CertificatePolicy
// TODO - check for X509ChainStatusFlags.NoIssuanceChainPolicy
//} else {
// TODO 6.1.3.e - set valid_policy_tree to NULL
//}
// TODO 6.1.3.f - verify explict_policy > 0 if valid_policy_tree != NULL
}
private static unsafe CertificateRequest LoadSigningRequest(
ReadOnlySpan <byte> pkcs10,
bool permitTrailingData,
HashAlgorithmName signerHashAlgorithm,
out int bytesConsumed,
CertificateRequestLoadOptions options,
RSASignaturePadding?signerSignaturePadding)
{
ArgumentException.ThrowIfNullOrEmpty(signerHashAlgorithm.Name, nameof(signerHashAlgorithm));
if ((options & ~AllOptions) != 0)
{
throw new ArgumentOutOfRangeException(nameof(options), options, SR.Argument_InvalidFlag);
}
bool skipSignatureValidation =
(options & CertificateRequestLoadOptions.SkipSignatureValidation) != 0;
bool unsafeLoadCertificateExtensions =
(options & CertificateRequestLoadOptions.UnsafeLoadCertificateExtensions) != 0;
try
{
AsnValueReader outer = new AsnValueReader(pkcs10, AsnEncodingRules.DER);
int encodedLength = outer.PeekEncodedValue().Length;
AsnValueReader pkcs10Asn = outer.ReadSequence();
CertificateRequest req;
if (!permitTrailingData)
{
outer.ThrowIfNotEmpty();
}
fixed(byte *p10ptr = pkcs10)
{
using (PointerMemoryManager <byte> manager = new PointerMemoryManager <byte>(p10ptr, encodedLength))
{
ReadOnlyMemory <byte> rebind = manager.Memory;
ReadOnlySpan <byte> encodedRequestInfo = pkcs10Asn.PeekEncodedValue();
CertificationRequestInfoAsn requestInfo;
AlgorithmIdentifierAsn algorithmIdentifier;
ReadOnlySpan <byte> signature;
int signatureUnusedBitCount;
CertificationRequestInfoAsn.Decode(ref pkcs10Asn, rebind, out requestInfo);
AlgorithmIdentifierAsn.Decode(ref pkcs10Asn, rebind, out algorithmIdentifier);
if (!pkcs10Asn.TryReadPrimitiveBitString(out signatureUnusedBitCount, out signature))
{
throw new CryptographicException(SR.Cryptography_Der_Invalid_Encoding);
}
pkcs10Asn.ThrowIfNotEmpty();
if (requestInfo.Version < 0)
{
throw new CryptographicException(SR.Cryptography_Der_Invalid_Encoding);
}
// They haven't bumped from v0 to v1 as of 2022.
const int MaxSupportedVersion = 0;
if (requestInfo.Version != MaxSupportedVersion)
{
throw new CryptographicException(
SR.Format(
SR.Cryptography_CertReq_Load_VersionTooNew,
requestInfo.Version,
MaxSupportedVersion));
}
PublicKey publicKey = PublicKey.DecodeSubjectPublicKeyInfo(ref requestInfo.SubjectPublicKeyInfo);
if (!skipSignatureValidation)
{
// None of the supported signature algorithms support signatures that are not full bytes.
// So, shortcut the verification on the bit length
if (signatureUnusedBitCount != 0 ||
!VerifyX509Signature(encodedRequestInfo, signature, publicKey, algorithmIdentifier))
{
throw new CryptographicException(SR.Cryptography_CertReq_SignatureVerificationFailed);
}
}
X500DistinguishedName subject = new X500DistinguishedName(requestInfo.Subject.Span);
req = new CertificateRequest(
subject,
publicKey,
signerHashAlgorithm,
signerSignaturePadding);
if (requestInfo.Attributes is not null)
{
bool foundCertExt = false;
foreach (AttributeAsn attr in requestInfo.Attributes)
{
if (attr.AttrType == Oids.Pkcs9ExtensionRequest)
{
if (foundCertExt)
{
throw new CryptographicException(
SR.Cryptography_CertReq_Load_DuplicateExtensionRequests);
}
foundCertExt = true;
if (attr.AttrValues.Length != 1)
{
throw new CryptographicException(
SR.Cryptography_CertReq_Load_DuplicateExtensionRequests);
}
AsnValueReader extsReader = new AsnValueReader(
attr.AttrValues[0].Span,
AsnEncodingRules.DER);
AsnValueReader exts = extsReader.ReadSequence();
extsReader.ThrowIfNotEmpty();
// Minimum length is 1, so do..while
do
{
X509ExtensionAsn.Decode(ref exts, rebind, out X509ExtensionAsn extAsn);
if (unsafeLoadCertificateExtensions)
{
X509Extension ext = new X509Extension(
extAsn.ExtnId,
extAsn.ExtnValue.Span,
extAsn.Critical);
X509Extension?rich =
X509Certificate2.CreateCustomExtensionIfAny(extAsn.ExtnId);
if (rich is not null)
{
rich.CopyFrom(ext);
req.CertificateExtensions.Add(rich);
}
else
{
req.CertificateExtensions.Add(ext);
}
}
} while (exts.HasData);
}
else
{
if (attr.AttrValues.Length == 0)
{
throw new CryptographicException(SR.Cryptography_Der_Invalid_Encoding);
}
foreach (ReadOnlyMemory <byte> val in attr.AttrValues)
{
req.OtherRequestAttributes.Add(
new AsnEncodedData(attr.AttrType, val.Span));
}
}
}
}
}
}
bytesConsumed = encodedLength;
return(req);
}
catch (AsnContentException e)
{
throw new CryptographicException(SR.Cryptography_Der_Invalid_Encoding, e);
}
}
// CTL == Certificate Trust List / NOT SUPPORTED
// TODO - check for X509ChainStatusFlags.CtlNotTimeValid
// TODO - check for X509ChainStatusFlags.CtlNotSignatureValid
// TODO - check for X509ChainStatusFlags.CtlNotValidForUsage
private void PrepareForNextCertificate(int n)
{
X509ChainElement element = elements [n];
X509Certificate2 certificate = element.Certificate;
// TODO 6.1.4.a-b
// 6.1.4.c
working_issuer_name = certificate.SubjectName;
// 6.1.4.d-e - our key includes both the public key and it's parameters
working_public_key = certificate.PublicKey.Key;
// 6.1.4.f
// working_public_key_algorithm = certificate.PublicKey.Oid.Value;
// TODO 6.1.4.g-j
// 6.1.4.k - Verify that the certificate is a CA certificate
X509BasicConstraintsExtension bce = (X509BasicConstraintsExtension)certificate.Extensions["2.5.29.19"];
if (bce != null)
{
if (!bce.CertificateAuthority)
{
element.StatusFlags |= X509ChainStatusFlags.InvalidBasicConstraints;
}
}
else if (certificate.Version >= 3)
{
// recent (v3+) CA certificates must include BCE
element.StatusFlags |= X509ChainStatusFlags.InvalidBasicConstraints;
}
// 6.1.4.l - if the certificate isn't self-issued...
if (!IsSelfIssued(certificate))
{
// ... verify that max_path_length > 0
if (max_path_length > 0)
{
max_path_length--;
}
else
{
// to match MS the reported status must be against the certificate
// with the BCE and not where the path is too long. It also means
// that this condition has to be reported only once
if (bce_restriction != null)
{
bce_restriction.StatusFlags |= X509ChainStatusFlags.InvalidBasicConstraints;
}
}
}
// 6.1.4.m - if pathLengthConstraint is present...
if ((bce != null) && (bce.HasPathLengthConstraint))
{
// ... and is less that max_path_length, set max_path_length to it's value
if (bce.PathLengthConstraint < max_path_length)
{
max_path_length = bce.PathLengthConstraint;
bce_restriction = element;
}
}
// 6.1.4.n - if key usage extension is present...
X509KeyUsageExtension kue = (X509KeyUsageExtension)certificate.Extensions["2.5.29.15"];
if (kue != null)
{
// ... verify keyCertSign is set
X509KeyUsageFlags success = X509KeyUsageFlags.KeyCertSign;
if ((kue.KeyUsages & success) != success)
{
element.StatusFlags |= X509ChainStatusFlags.NotValidForUsage;
}
}
// 6.1.4.o - recognize and process other critical extension present in the certificate
ProcessCertificateExtensions(element);
}
public void Decode_Separators ()
{
string semicolons = "C=US; O=\"RSA Data Security, Inc.\"; OU=Secure Server Certification Authority";
string newline = String.Format ("C=US{0}O=\"RSA Data Security, Inc.\"{0}OU=Secure Server Certification Authority", Environment.NewLine);
X500DistinguishedName dn = new X500DistinguishedName (rname, X500DistinguishedNameFlags.None);
Assert.AreEqual (rname, dn.Name, "Name");
Assert.AreEqual (rname, dn.Decode (X500DistinguishedNameFlags.None), "Decode(None)");
Assert.AreEqual (rname, dn.Decode (X500DistinguishedNameFlags.UseCommas), "Decode(UseCommas)");
Assert.AreEqual (semicolons, dn.Decode (X500DistinguishedNameFlags.UseSemicolons), "Decode(UseCommas|UseSemicolons)");
Assert.AreEqual (newline, dn.Decode (X500DistinguishedNameFlags.UseNewLines), "Decode(UseNewLines)");
Assert.AreEqual (semicolons, dn.Decode (X500DistinguishedNameFlags.UseCommas | X500DistinguishedNameFlags.UseSemicolons), "Decode(UseCommas|UseSemicolons)");
Assert.AreEqual (semicolons, dn.Decode (X500DistinguishedNameFlags.UseNewLines | X500DistinguishedNameFlags.UseSemicolons), "Decode(UseNewLines|UseSemicolons)");
Assert.AreEqual (rname, dn.Decode (X500DistinguishedNameFlags.UseCommas | X500DistinguishedNameFlags.UseNewLines), "Decode(UseCommas|UseNewLines)");
}
private void Decode()
{
if (_decoded)
{
return;
}
// AuthorityKeyIdentifier ::= SEQUENCE {
// keyIdentifier [0] KeyIdentifier OPTIONAL,
// authorityCertIssuer [1] GeneralNames OPTIONAL,
// authorityCertSerialNumber [2] CertificateSerialNumber OPTIONAL }
//
// KeyIdentifier ::= OCTET STRING
string keyId = null;
X500DistinguishedName firstIssuerName = null;
DerSequenceReader reader = new DerSequenceReader(RawData);
byte[] serialNumber = null;
// Primitive Context 0
const byte KeyIdTag = DerSequenceReader.ContextSpecificTagFlag | 0;
// Constructed Context 1
const byte CertIssuerTag = DerSequenceReader.ContextSpecificConstructedTag1;
// Primitive Context 2
const byte CertSerialTag = DerSequenceReader.ContextSpecificTagFlag | 2;
if (reader.HasTag(KeyIdTag))
{
keyId = reader.ReadOctetString().ToHexStringUpper();
}
if (reader.HasTag(CertIssuerTag))
{
DerSequenceReader generalNames = reader.ReadSequence();
while (generalNames.HasData)
{
const byte DirectoryNameTag = DerSequenceReader.ConstructedFlag |
(byte)GeneralNameEncoder.GeneralNameTag.DirectoryName;
if (firstIssuerName == null && generalNames.HasTag(DirectoryNameTag))
{
firstIssuerName = new X500DistinguishedName(generalNames.ReadNextEncodedValue());
}
reader.ValidateAndSkipDerValue();
}
}
if (reader.HasTag(CertSerialTag))
{
serialNumber = reader.ReadOctetString();
}
if (reader.HasData)
{
throw new CryptographicException(SR.Cryptography_Der_Invalid_Encoding);
}
_firstIssuerName = firstIssuerName;
_serialNumber = serialNumber;
_keyIdentifier = keyId;
_decoded = true;
}
public void RFC3280OptionalAttributeTypes ()
{
string expected = "T=M.D., OID.2.5.4.44=III, SN=CA, OID.2.5.4.65=Fictitious, I=Q, G=John, L=Gaithersburg, O=Test Certificates, C=US";
X509Certificate2 cert = new X509Certificate2 (RFC3280OptionalAttributeTypesCACert_crt);
Assert.AreEqual (expected, cert.SubjectName.Name, "SubjectName");
X500DistinguishedName build = new X500DistinguishedName (expected);
Assert.AreEqual (expected, build.Name, "Name");
}
//
// Used only by client SSL code, never returns null.
//
internal static string[] GetRequestCertificateAuthorities(SafeDeleteContext securityContext)
{
Interop.SspiCli.IssuerListInfoEx issuerList =
(Interop.SspiCli.IssuerListInfoEx)SSPIWrapper.QueryContextAttributes(
GlobalSSPI.SSPISecureChannel,
securityContext,
Interop.SspiCli.ContextAttribute.IssuerListInfoEx);
string[] issuers = Array.Empty<string>();
try
{
if (issuerList.cIssuers > 0)
{
unsafe
{
uint count = issuerList.cIssuers;
issuers = new string[issuerList.cIssuers];
Interop.SspiCli._CERT_CHAIN_ELEMENT* pIL = (Interop.SspiCli._CERT_CHAIN_ELEMENT*)issuerList.aIssuers.DangerousGetHandle();
for (int i = 0; i < count; ++i)
{
Interop.SspiCli._CERT_CHAIN_ELEMENT* pIL2 = pIL + i;
if (pIL2->cbSize <= 0)
{
if (GlobalLog.IsEnabled)
{
GlobalLog.Assert("SecureChannel::GetIssuers()", "Interop.SspiCli._CERT_CHAIN_ELEMENT size is not positive: " + pIL2->cbSize.ToString());
}
Debug.Fail("SecureChannel::GetIssuers()", "Interop.SspiCli._CERT_CHAIN_ELEMENT size is not positive: " + pIL2->cbSize.ToString());
}
if (pIL2->cbSize > 0)
{
uint size = pIL2->cbSize;
byte* ptr = (byte*)(pIL2->pCertContext);
byte[] x = new byte[size];
for (int j = 0; j < size; j++)
{
x[j] = *(ptr + j);
}
X500DistinguishedName x500DistinguishedName = new X500DistinguishedName(x);
issuers[i] = x500DistinguishedName.Name;
if (GlobalLog.IsEnabled)
{
GlobalLog.Print("SecureChannel#" + LoggingHash.HashString(securityContext) + "::GetIssuers() IssuerListEx[" + i + "]:" + issuers[i]);
}
}
}
}
}
}
finally
{
if (issuerList.aIssuers != null)
{
issuerList.aIssuers.Dispose();
}
}
return issuers;
}
private void Empty (X500DistinguishedName dn)
{
Assert.AreEqual (String.Empty, dn.Name, "Name");
Assert.AreEqual (String.Empty, dn.Decode (X500DistinguishedNameFlags.None), "Decode(None)");
Assert.AreEqual (String.Empty, dn.Decode (X500DistinguishedNameFlags.Reversed), "Decode(Reversed)");
Assert.AreEqual (String.Empty, dn.Decode (X500DistinguishedNameFlags.UseSemicolons), "Decode(UseSemicolons)");
Assert.AreEqual (String.Empty, dn.Decode (X500DistinguishedNameFlags.DoNotUsePlusSign), "Decode(DoNotUsePlusSign)");
Assert.AreEqual (String.Empty, dn.Decode (X500DistinguishedNameFlags.DoNotUseQuotes), "Decode(DoNotUseQuotes)");
Assert.AreEqual (String.Empty, dn.Decode (X500DistinguishedNameFlags.UseCommas), "Decode(UseCommas)");
Assert.AreEqual (String.Empty, dn.Decode (X500DistinguishedNameFlags.UseNewLines), "Decode(UseNewLines)");
Assert.AreEqual (String.Empty, dn.Decode (X500DistinguishedNameFlags.UseUTF8Encoding), "Decode(UseUTF8Encoding)");
Assert.AreEqual (String.Empty, dn.Decode (X500DistinguishedNameFlags.UseT61Encoding), "Decode(UseT61Encoding)");
Assert.AreEqual (String.Empty, dn.Decode (X500DistinguishedNameFlags.ForceUTF8Encoding), "Decode(ForceUTF8Encoding)");
Assert.AreEqual (String.Empty, dn.Format (true), "Format(true)");
Assert.AreEqual (String.Empty, dn.Format (false), "Format(false)");
}
public X509Identity(X500DistinguishedName x500DistinguishedName)
: base(X509, X509)
{
_x500DistinguishedName = x500DistinguishedName;
}
private byte[] Build(
X500DistinguishedName issuerName,
X509SignatureGenerator generator,
BigInteger crlNumber,
DateTimeOffset nextUpdate,
DateTimeOffset thisUpdate,
HashAlgorithmName hashAlgorithm,
X509AuthorityKeyIdentifierExtension authorityKeyIdentifier)
{
ArgumentNullException.ThrowIfNull(issuerName);
ArgumentNullException.ThrowIfNull(generator);
if (crlNumber < 0)
{
throw new ArgumentOutOfRangeException(nameof(crlNumber), SR.ArgumentOutOfRange_NeedNonNegNum);
}
if (nextUpdate <= thisUpdate)
{
throw new ArgumentException(SR.Cryptography_CRLBuilder_DatesReversed);
}
ArgumentException.ThrowIfNullOrEmpty(hashAlgorithm.Name, nameof(hashAlgorithm));
ArgumentNullException.ThrowIfNull(authorityKeyIdentifier);
byte[] signatureAlgId = generator.GetSignatureAlgorithmIdentifier(hashAlgorithm);
{
AlgorithmIdentifierAsn signatureAlgorithmAsn;
// Deserialization also does validation of the value (except for Parameters,
// which have to be validated separately).
signatureAlgorithmAsn = AlgorithmIdentifierAsn.Decode(signatureAlgId, AsnEncodingRules.DER);
if (signatureAlgorithmAsn.Parameters.HasValue)
{
Helpers.ValidateDer(signatureAlgorithmAsn.Parameters.GetValueOrDefault().Span);
}
}
AsnWriter writer = (_writer ??= new AsnWriter(AsnEncodingRules.DER));
writer.Reset();
// TBSCertList
using (writer.PushSequence())
{
// version v2(1)
writer.WriteInteger(1);
// signature (AlgorithmIdentifier)
writer.WriteEncodedValue(signatureAlgId);
// issuer
writer.WriteEncodedValue(issuerName.RawData);
// thisUpdate
WriteX509Time(writer, thisUpdate);
// nextUpdate
WriteX509Time(writer, nextUpdate);
// revokedCertificates (don't write down if empty)
if (_revoked.Count > 0)
{
// SEQUENCE OF
using (writer.PushSequence())
{
foreach (RevokedCertificate revoked in _revoked)
{
// Anonymous CRL Entry type
using (writer.PushSequence())
{
writer.WriteInteger(revoked.Serial);
WriteX509Time(writer, revoked.RevocationTime);
if (revoked.Extensions is not null)
{
writer.WriteEncodedValue(revoked.Extensions);
}
}
}
}
}
// extensions [0] EXPLICIT Extensions
using (writer.PushSequence(new Asn1Tag(TagClass.ContextSpecific, 0)))
{
// Extensions (SEQUENCE OF)
using (writer.PushSequence())
{
// Authority Key Identifier Extension
using (writer.PushSequence())
{
writer.WriteObjectIdentifier(authorityKeyIdentifier.Oid !.Value !);
if (authorityKeyIdentifier.Critical)
{
writer.WriteBoolean(true);
}
byte[] encodedAkid = authorityKeyIdentifier.RawData;
Helpers.ValidateDer(encodedAkid);
writer.WriteOctetString(encodedAkid);
}
// CRL Number Extension
using (writer.PushSequence())
{
writer.WriteObjectIdentifier(Oids.CrlNumber);
using (writer.PushOctetString())
{
writer.WriteInteger(crlNumber);
}
}
}
}
}
byte[] tbsCertList = writer.Encode();
writer.Reset();
byte[] signature = generator.SignData(tbsCertList, hashAlgorithm);
// CertificateList
using (writer.PushSequence())
{
writer.WriteEncodedValue(tbsCertList);
writer.WriteEncodedValue(signatureAlgId);
writer.WriteBitString(signature);
}
byte[] crl = writer.Encode();
return(crl);
}
public override void Reset ()
{
_cert = null;
_archived = false;
_extensions = null;
_name = String.Empty;
_serial = null;
_publicKey = null;
issuer_name = null;
subject_name = null;
signature_algorithm = null;
base.Reset ();
}
internal unsafe SubjectIdentifier (CAPI.CRYPTOAPI_BLOB issuer, CAPI.CRYPTOAPI_BLOB serialNumber) {
// If serial number is 0, then it is the special SKI encoding or NoSignature
bool isSKIorHashOnly = true;
byte * pb = (byte *) serialNumber.pbData;
for (uint i = 0; i < serialNumber.cbData; i++) {
if (*pb++ != (byte) 0) {
isSKIorHashOnly = false;
break;
}
}
if (isSKIorHashOnly) {
byte[] issuerBytes = new byte[issuer.cbData];
Marshal.Copy(issuer.pbData, issuerBytes, 0, issuerBytes.Length);
X500DistinguishedName dummyName = new X500DistinguishedName(issuerBytes);
if (String.Compare(CAPI.DummySignerCommonName, dummyName.Name, StringComparison.OrdinalIgnoreCase) == 0) {
Reset(SubjectIdentifierType.NoSignature, null);
return;
}
}
if (isSKIorHashOnly) {
// Decode disguised SKI in issuer field (See WinCrypt.h for more info). Note that some certificates may contain
// an all-zero serial number but not be encoded with an szOID_KEYID_RDN. In order to allow use of signatures created
// using these certificates, we will first try to find the szOID_KEYID_RDN, but if it does not exist, fall back to just
// decoding the incoming issuer and serial number.
m_type = SubjectIdentifierType.SubjectKeyIdentifier;
m_value = String.Empty;
uint cbCertNameInfo = 0;
SafeLocalAllocHandle pbCertNameInfo = SafeLocalAllocHandle.InvalidHandle;
if (CAPI.DecodeObject(new IntPtr(CAPI.X509_NAME),
issuer.pbData,
issuer.cbData,
out pbCertNameInfo,
out cbCertNameInfo)) {
using (pbCertNameInfo) {
checked {
CAPI.CERT_NAME_INFO certNameInfo = (CAPI.CERT_NAME_INFO) Marshal.PtrToStructure(pbCertNameInfo.DangerousGetHandle(), typeof(CAPI.CERT_NAME_INFO));
for (uint i = 0; i < certNameInfo.cRDN; i++) {
CAPI.CERT_RDN certRdn = (CAPI.CERT_RDN) Marshal.PtrToStructure(new IntPtr((long) certNameInfo.rgRDN + (long) (i * Marshal.SizeOf(typeof(CAPI.CERT_RDN)))), typeof(CAPI.CERT_RDN));
for (uint j = 0; j < certRdn.cRDNAttr; j++)
{
CAPI.CERT_RDN_ATTR certRdnAttr = (CAPI.CERT_RDN_ATTR)Marshal.PtrToStructure(new IntPtr((long)certRdn.rgRDNAttr + (long)(j * Marshal.SizeOf(typeof(CAPI.CERT_RDN_ATTR)))), typeof(CAPI.CERT_RDN_ATTR));
if (String.Compare(CAPI.szOID_KEYID_RDN, certRdnAttr.pszObjId, StringComparison.OrdinalIgnoreCase) == 0)
{
if (certRdnAttr.dwValueType == CAPI.CERT_RDN_OCTET_STRING)
{
byte[] ski = new byte[certRdnAttr.Value.cbData];
Marshal.Copy(certRdnAttr.Value.pbData, ski, 0, ski.Length);
Reset(SubjectIdentifierType.SubjectKeyIdentifier, X509Utils.EncodeHexString(ski));
return;
}
}
}
}
}
}
}
}
CAPI.CERT_ISSUER_SERIAL_NUMBER IssuerAndSerial;
IssuerAndSerial.Issuer = issuer;
IssuerAndSerial.SerialNumber = serialNumber;
X509IssuerSerial issuerSerial = PkcsUtils.DecodeIssuerSerial(IssuerAndSerial);
Reset(SubjectIdentifierType.IssuerAndSerialNumber, issuerSerial);
}
public X500DistinguishedName (X500DistinguishedName distinguishedName)
{
if (distinguishedName == null)
throw new ArgumentNullException ("distinguishedName");
Oid = new Oid ();
RawData = distinguishedName.RawData;
name = distinguishedName.name;
}
private string FormatDistinguishedName(X500DistinguishedName dn)
{
var subjectName = dn.Name;
if (subjectName.Contains("\""))
{
bool insideQuotes = false;
string subjectName2 = string.Empty;
for (int i = 0; i < subjectName.Length; i++)
{
if (subjectName[i] == '"') insideQuotes = !insideQuotes;
if ((subjectName[i] == ',') && insideQuotes)
subjectName2 += '#';
else subjectName2 += subjectName[i];
}
subjectName = subjectName2;
}
var parts = subjectName.Split(',');
var part = string.Empty;
if (parts.Length == 0) part = dn.Name;
else part = parts[0];
part = part.Replace('#', ',');
part = part.Replace("\"", string.Empty);
int index = part.IndexOf('=');
if (index != -1) part = part.Substring(index + 1);
return part;
}
public X500DistinguishedName(X500DistinguishedName distinguishedName) : base((AsnEncodedData)distinguishedName)
{
m_distinguishedName = distinguishedName.Name;
}
public X500DistinguishedNameClaimSet(X500DistinguishedName x500DistinguishedName)
{
if (x500DistinguishedName == null)
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("x500DistinguishedName");
_identity = new X509Identity(x500DistinguishedName);
List<Claim> claims = new List<Claim>(2);
claims.Add(new Claim(ClaimTypes.X500DistinguishedName, x500DistinguishedName, Rights.Identity));
claims.Add(Claim.CreateX500DistinguishedNameClaim(x500DistinguishedName));
Initialize(ClaimSet.Anonymous, claims);
}
/// <summary>
/// Create a new certificate
/// </summary>
/// <param name="issuer">Issuer certificate, if null then self-sign</param>
/// <param name="subjectName">Subject name</param>
/// <param name="serialNumber">Serial number of certificate, if null then will generate a new one</param>
/// <param name="signature">If true create an AT_SIGNATURE key, otherwise AT_EXCHANGE</param>
/// <param name="keySize">Size of RSA key</param>
/// <param name="notBefore">Start date of certificate</param>
/// <param name="notAfter">End date of certificate</param>
/// <param name="extensions">Array of extensions, if null then no extensions</param>
/// <param name="hashAlgorithm">Specify the signature hash algorithm</param>
/// <returns>The created X509 certificate</returns>
public SystemX509.X509Certificate2 CreateCert(SystemX509.X509Certificate2 issuer, SystemX509.X500DistinguishedName subjectName,
byte[] serialNumber, bool signature, int keySize, CertificateHashAlgorithm hashAlgorithm, DateTime notBefore,
DateTime notAfter, SystemX509.X509ExtensionCollection extensions)
{
X509V3CertificateGenerator builder = new X509V3CertificateGenerator();
AsymmetricAlgorithm subjectKey = CreateRSAKey(keySize, signature);
AsymmetricAlgorithm signKey = issuer == null ? subjectKey : issuer.PrivateKey;
if (signKey == null)
{
throw new ArgumentException(Properties.Resources.CreateCert_NoPrivateKey);
}
AsymmetricCipherKeyPair bcSubjectKey = GetRsaKeyPair((RSACryptoServiceProvider)subjectKey);
AsymmetricCipherKeyPair bcSignKey = GetRsaKeyPair((RSACryptoServiceProvider)signKey);
X509Name issuerNameObj = issuer == null?X509Name.GetInstance(Asn1Object.FromByteArray(subjectName.RawData))
: X509Name.GetInstance(Asn1Object.FromByteArray(issuer.SubjectName.RawData));
X509Name subjectNameObj = X509Name.GetInstance(Asn1Object.FromByteArray(subjectName.RawData));
BigInteger subjectSerial = new BigInteger(1, serialNumber != null ? serialNumber : Guid.NewGuid().ToByteArray());
BigInteger issuerSerial = issuer == null ? subjectSerial : new BigInteger(1, issuer.GetSerialNumber());
builder.SetIssuerDN(issuerNameObj);
builder.SetSubjectDN(subjectNameObj);
builder.SetSerialNumber(subjectSerial);
builder.SetSignatureAlgorithm(HashAlgorithmToName(hashAlgorithm));
builder.SetNotBefore(notBefore.ToUniversalTime());
builder.SetNotAfter(notAfter.ToUniversalTime());
builder.SetPublicKey(bcSubjectKey.Public);
SubjectPublicKeyInfo info = SubjectPublicKeyInfoFactory.CreateSubjectPublicKeyInfo(bcSignKey.Public);
AuthorityKeyIdentifier authKeyId = new AuthorityKeyIdentifier(info, new GeneralNames(new GeneralName(issuerNameObj)), issuerSerial);
SubjectKeyIdentifier subjectKeyid = new SubjectKeyIdentifier(SubjectPublicKeyInfoFactory.CreateSubjectPublicKeyInfo(bcSubjectKey.Public));
builder.AddExtension(X509Extensions.AuthorityKeyIdentifier.Id, true, authKeyId);
builder.AddExtension(X509Extensions.SubjectKeyIdentifier.Id, true, subjectKeyid);
if (extensions != null)
{
foreach (SystemX509.X509Extension ext in extensions)
{
if (!ext.Oid.Value.Equals(X509Extensions.AuthorityKeyIdentifier.Id) &&
!ext.Oid.Value.Equals(X509Extensions.SubjectKeyIdentifier.Id) &&
!ext.Oid.Value.Equals(szOID_AUTHORITY_KEY_IDENTIFIER2))
{
Asn1InputStream istm = new Org.BouncyCastle.Asn1.Asn1InputStream(ext.RawData);
Asn1Object obj = istm.ReadObject();
builder.AddExtension(ext.Oid.Value, ext.Critical, obj);
}
}
}
X509Certificate cert = builder.Generate(bcSignKey.Private);
SystemX509.X509Certificate2 ret = new SystemX509.X509Certificate2(cert.GetEncoded(), (string)null, SystemX509.X509KeyStorageFlags.Exportable);
ret.PrivateKey = subjectKey;
return(ret);
}
public static Claim CreateX500DistinguishedNameClaim(X500DistinguishedName x500DistinguishedName)
{
if (x500DistinguishedName == null)
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("x500DistinguishedName");
return new Claim(ClaimTypes.X500DistinguishedName, x500DistinguishedName, Rights.PossessProperty, ClaimComparer.X500DistinguishedName);
}
public void Constructor_String ()
{
X500DistinguishedName dn = new X500DistinguishedName ("OU=Secure Server Certification Authority, O=\"RSA Data Security, Inc.\", C=US");
Assert.IsNotNull (dn.Oid, "Oid");
Assert.IsNull (dn.Oid.Value, "Oid.Value");
Assert.IsNull (dn.Oid.FriendlyName, "Oid.FriendlyName");
RsaIssuer (dn);
}
///// <summary>
///// Create a new certificate
///// </summary>
///// <param name="issuer">Issuer certificate, if null then self-sign</param>
///// <param name="subjectName">Subject name</param>
///// <param name="serialNumber">Serial number of certificate, if null then will generate a new one</param>
///// <param name="keySize">Size of RSA key</param>
///// <param name="notBefore">Start date of certificate</param>
///// <param name="notAfter">End date of certificate</param>
///// <param name="extensions">Array of extensions, if null then no extensions</param>
///// <param name="hashAlgorithm">Specify the signature hash algorithm</param>
///// <returns>The created X509 certificate</returns>
public static SystemX509.X509Certificate2 CreateCert(SystemX509.X509Certificate2 issuer, SystemX509.X500DistinguishedName subjectName,
byte[] serialNumber, int keySize, CertificateHashAlgorithm hashAlgorithm, DateTime notBefore,
DateTime notAfter, SystemX509.X509ExtensionCollection extensions)
{
SecureRandom random = new SecureRandom();
X509V3CertificateGenerator builder = new X509V3CertificateGenerator();
AsymmetricCipherKeyPair bcSubjectKey = CreateRSAKey(keySize, random);
AsymmetricCipherKeyPair bcSignKey = issuer == null ? bcSubjectKey : issuer.GetBCPrivateKey();
if (bcSignKey == null)
{
throw new ArgumentException("issuer");
}
X509Name issuerNameObj = issuer == null?X509Name.GetInstance(Asn1Object.FromByteArray(subjectName.RawData))
: X509Name.GetInstance(Asn1Object.FromByteArray(issuer.SubjectName.RawData));
X509Name subjectNameObj = X509Name.GetInstance(Asn1Object.FromByteArray(subjectName.RawData));
BigInteger subjectSerial = new BigInteger(1, serialNumber != null ? serialNumber : Guid.NewGuid().ToByteArray());
BigInteger issuerSerial = issuer == null ? subjectSerial : new BigInteger(1, issuer.GetSerialNumber());
builder.SetIssuerDN(issuerNameObj);
builder.SetSubjectDN(subjectNameObj);
builder.SetSerialNumber(subjectSerial);
builder.SetNotBefore(notBefore.ToUniversalTime());
builder.SetNotAfter(notAfter.ToUniversalTime());
builder.SetPublicKey(bcSubjectKey.Public);
SubjectPublicKeyInfo info = SubjectPublicKeyInfoFactory.CreateSubjectPublicKeyInfo(bcSignKey.Public);
AuthorityKeyIdentifier authKeyId = new AuthorityKeyIdentifier(info, new GeneralNames(new GeneralName(issuerNameObj)), issuerSerial);
SubjectKeyIdentifier subjectKeyid = new SubjectKeyIdentifier(SubjectPublicKeyInfoFactory.CreateSubjectPublicKeyInfo(bcSubjectKey.Public));
builder.AddExtension(X509Extensions.AuthorityKeyIdentifier.Id, true, authKeyId);
builder.AddExtension(X509Extensions.SubjectKeyIdentifier.Id, true, subjectKeyid);
if (extensions != null)
{
foreach (SystemX509.X509Extension ext in extensions)
{
if (!ext.Oid.Value.Equals(X509Extensions.AuthorityKeyIdentifier.Id) &&
!ext.Oid.Value.Equals(X509Extensions.SubjectKeyIdentifier.Id) &&
!ext.Oid.Value.Equals(szOID_AUTHORITY_KEY_IDENTIFIER2))
{
Asn1InputStream istm = new Asn1InputStream(ext.RawData);
Asn1Object obj = istm.ReadObject();
builder.AddExtension(ext.Oid.Value, ext.Critical, obj);
}
}
}
X509Certificate cert = builder.Generate(CreateSignatureFactory(hashAlgorithm, bcSignKey, random));
Pkcs12StoreBuilder pkcs = new Pkcs12StoreBuilder();
Pkcs12Store store = pkcs.Build();
X509CertificateEntry entry = new X509CertificateEntry(cert);
store.SetCertificateEntry("main", entry);
AsymmetricKeyEntry key_entry = new AsymmetricKeyEntry(bcSubjectKey.Private);
store.SetKeyEntry("main", key_entry, new[] { entry });
MemoryStream stm = new MemoryStream();
store.Save(stm, new char[0], new SecureRandom());
return(new SystemX509.X509Certificate2(stm.ToArray(), String.Empty, SystemX509.X509KeyStorageFlags.Exportable));
}
public void Constructor_String_Empty_Flags ()
{
X500DistinguishedName dn = new X500DistinguishedName (String.Empty, X500DistinguishedNameFlags.None);
Assert.AreEqual (2, dn.RawData.Length, "RawData.Length");
Assert.AreEqual ("30-00", BitConverter.ToString (dn.RawData), "RawData");
Empty (dn);
}
// of all X500DistinguishedNameFlags flags nothing can do a "correct" comparison :|
internal static bool AreEqual (X500DistinguishedName name1, X500DistinguishedName name2)
{
if (name1 == null)
return (name2 == null);
if (name2 == null)
return false;
if (name1.canonEncoding != null && name2.canonEncoding != null) {
if (name1.canonEncoding.Length != name2.canonEncoding.Length)
return false;
for (int i = 0; i < name1.canonEncoding.Length; i++) {
if (name1.canonEncoding[i] != name2.canonEncoding[i])
return false;
}
return true;
}
X500DistinguishedNameFlags flags = X500DistinguishedNameFlags.UseNewLines | X500DistinguishedNameFlags.DoNotUseQuotes;
string[] split = new string[] { Environment.NewLine };
string[] parts1 = name1.Decode (flags).Split (split, StringSplitOptions.RemoveEmptyEntries);
string[] parts2 = name2.Decode (flags).Split (split, StringSplitOptions.RemoveEmptyEntries);
if (parts1.Length != parts2.Length)
return false;
for (int i = 0; i < parts1.Length; i++) {
if (Canonize (parts1[i]) != Canonize (parts2[i]))
return false;
}
return true;
}
public void Constructor_String_Flags_None ()
{
X500DistinguishedName dn = new X500DistinguishedName (rname, X500DistinguishedNameFlags.None);
// can't call RsaIssuer because Name is reversed from None in those cases
// i.e. X500DistinguishedName (string) != X500DistinguishedName (string, X500DistinguishedNameFlags)
Assert.AreEqual (rname, dn.Name, "Name");
Assert.AreEqual (rname, dn.Decode (X500DistinguishedNameFlags.None), "Decode(None)");
Assert.AreEqual (name, dn.Decode (X500DistinguishedNameFlags.Reversed), "Decode(Reversed)");
Assert.AreEqual ("C=US; O=\"RSA Data Security, Inc.\"; OU=Secure Server Certification Authority", dn.Decode (X500DistinguishedNameFlags.UseSemicolons), "Decode(UseSemicolons)");
Assert.AreEqual (rname, dn.Decode (X500DistinguishedNameFlags.DoNotUsePlusSign), "Decode(DoNotUsePlusSign)");
Assert.AreEqual ("C=US, O=RSA Data Security, Inc., OU=Secure Server Certification Authority", dn.Decode (X500DistinguishedNameFlags.DoNotUseQuotes), "Decode(DoNotUseQuotes)");
Assert.AreEqual (rname, dn.Decode (X500DistinguishedNameFlags.UseCommas), "Decode(UseCommas)");
string newline = String.Format ("C=US{0}O=\"RSA Data Security, Inc.\"{0}OU=Secure Server Certification Authority", Environment.NewLine);
Assert.AreEqual (newline, dn.Decode (X500DistinguishedNameFlags.UseNewLines), "Decode(UseNewLines)");
Assert.AreEqual (rname, dn.Decode (X500DistinguishedNameFlags.UseUTF8Encoding), "Decode(UseUTF8Encoding)");
Assert.AreEqual (rname, dn.Decode (X500DistinguishedNameFlags.UseT61Encoding), "Decode(UseT61Encoding)");
Assert.AreEqual (rname, dn.Decode (X500DistinguishedNameFlags.ForceUTF8Encoding), "Decode(ForceUTF8Encoding)");
}
// CTL == Certificate Trust List / NOT SUPPORTED
// TODO - check for X509ChainStatusFlags.CtlNotTimeValid
// TODO - check for X509ChainStatusFlags.CtlNotSignatureValid
// TODO - check for X509ChainStatusFlags.CtlNotValidForUsage
private void PrepareForNextCertificate (int n)
{
X509ChainElement element = elements [n];
X509Certificate2 certificate = element.Certificate;
// TODO 6.1.4.a-b
// 6.1.4.c
working_issuer_name = certificate.SubjectName;
// 6.1.4.d-e - our key includes both the public key and it's parameters
working_public_key = certificate.PublicKey.Key;
// 6.1.4.f
// working_public_key_algorithm = certificate.PublicKey.Oid.Value;
// TODO 6.1.4.g-j
// 6.1.4.k - Verify that the certificate is a CA certificate
X509BasicConstraintsExtension bce = (certificate.Extensions["2.5.29.19"] as X509BasicConstraintsExtension);
if (bce != null) {
if (!bce.CertificateAuthority) {
element.StatusFlags |= X509ChainStatusFlags.InvalidBasicConstraints;
}
} else if (certificate.Version >= 3) {
// recent (v3+) CA certificates must include BCE
element.StatusFlags |= X509ChainStatusFlags.InvalidBasicConstraints;
}
// 6.1.4.l - if the certificate isn't self-issued...
if (!IsSelfIssued (certificate)) {
// ... verify that max_path_length > 0
if (max_path_length > 0) {
max_path_length--;
} else {
// to match MS the reported status must be against the certificate
// with the BCE and not where the path is too long. It also means
// that this condition has to be reported only once
if (bce_restriction != null) {
bce_restriction.StatusFlags |= X509ChainStatusFlags.InvalidBasicConstraints;
}
}
}
// 6.1.4.m - if pathLengthConstraint is present...
if ((bce != null) && (bce.HasPathLengthConstraint)) {
// ... and is less that max_path_length, set max_path_length to it's value
if (bce.PathLengthConstraint < max_path_length) {
max_path_length = bce.PathLengthConstraint;
bce_restriction = element;
}
}
// 6.1.4.n - if key usage extension is present...
X509KeyUsageExtension kue = (certificate.Extensions["2.5.29.15"] as X509KeyUsageExtension);
if (kue != null) {
// ... verify keyCertSign is set
X509KeyUsageFlags success = X509KeyUsageFlags.KeyCertSign;
if ((kue.KeyUsages & success) != success)
element.StatusFlags |= X509ChainStatusFlags.NotValidForUsage;
}
// 6.1.4.o - recognize and process other critical extension present in the certificate
ProcessCertificateExtensions (element);
}
public void Constructor_String_Flags_Reversed ()
{
X500DistinguishedName dn = new X500DistinguishedName (name, X500DistinguishedNameFlags.None);
// can't call RsaIssuer because Name is reversed from None in those cases
Assert.AreEqual (name, dn.Name, "Name");
Assert.AreEqual (name, dn.Decode (X500DistinguishedNameFlags.None), "Decode(None)");
Assert.AreEqual (rname, dn.Decode (X500DistinguishedNameFlags.Reversed), "Decode(Reversed)");
Assert.AreEqual (name, dn.Decode (X500DistinguishedNameFlags.DoNotUsePlusSign), "Decode(DoNotUsePlusSign)");
Assert.AreEqual (name, dn.Decode (X500DistinguishedNameFlags.UseCommas), "Decode(UseCommas)");
Assert.AreEqual (name, dn.Decode (X500DistinguishedNameFlags.UseUTF8Encoding), "Decode(UseUTF8Encoding)");
Assert.AreEqual (name, dn.Decode (X500DistinguishedNameFlags.UseT61Encoding), "Decode(UseT61Encoding)");
Assert.AreEqual (name, dn.Decode (X500DistinguishedNameFlags.ForceUTF8Encoding), "Decode(ForceUTF8Encoding)");
}
