private static ECDsa DecodeECDsaPublicKey(CertificatePal certificatePal)
{
using (SafeBCryptKeyHandle bCryptKeyHandle = ImportPublicKeyInfo(certificatePal.CertContext))
{
CngKeyBlobFormat blobFormat = CngKeyBlobFormat.EccPublicBlob;
byte[] keyBlob = ExportKeyBlob(bCryptKeyHandle, blobFormat);
using (CngKey cngKey = CngKey.Import(keyBlob, blobFormat))
{
return new ECDsaCng(cngKey);
}
}
}
private static ECDsa DecodeECDsaPublicKey(CertificatePal certificatePal)
{
ECDsa ecdsa;
using (SafeBCryptKeyHandle bCryptKeyHandle = ImportPublicKeyInfo(certificatePal.CertContext))
{
CngKeyBlobFormat blobFormat;
byte[] keyBlob;
#if NETNATIVE
blobFormat = CngKeyBlobFormat.EccPublicBlob;
keyBlob = ExportKeyBlob(bCryptKeyHandle, blobFormat);
using (CngKey cngKey = CngKey.Import(keyBlob, blobFormat))
{
ecdsa = new ECDsaCng(cngKey);
}
#else
string curveName = GetCurveName(bCryptKeyHandle);
if (curveName == null)
{
if (HasExplicitParameters(bCryptKeyHandle))
{
blobFormat = CngKeyBlobFormat.EccFullPublicBlob;
}
else
{
blobFormat = CngKeyBlobFormat.EccPublicBlob;
}
keyBlob = ExportKeyBlob(bCryptKeyHandle, blobFormat);
using (CngKey cngKey = CngKey.Import(keyBlob, blobFormat))
{
ecdsa = new ECDsaCng(cngKey);
}
}
else
{
blobFormat = CngKeyBlobFormat.EccPublicBlob;
keyBlob = ExportKeyBlob(bCryptKeyHandle, blobFormat);
ECParameters ecparams = new ECParameters();
ExportNamedCurveParameters(ref ecparams, keyBlob, false);
ecparams.Curve = ECCurve.CreateFromFriendlyName(curveName);
ecdsa = new ECDsaCng();
ecdsa.ImportParameters(ecparams);
}
#endif
}
return ecdsa;
}
private CertificatePal(CertificatePal copyFrom)
{
// Use _certContext (instead of CertContext) to keep the original context handle from being
// finalized until all cert copies are no longer referenced.
_certContext = new SafeCertContextHandle(copyFrom._certContext);
}
/// <summary>
/// Returns the SafeCertContextHandle. Use this instead of FromHandle() when
/// creating another X509Certificate object based on this one to ensure the underlying
/// cert context is not released at the wrong time.
/// </summary>
public static ICertificatePal FromOtherCert(X509Certificate copyFrom)
{
CertificatePal pal = new CertificatePal((CertificatePal)copyFrom.Pal);
return pal;
}
private static ICertificatePal FromBlobOrFile(byte[] rawData, string fileName, string password, X509KeyStorageFlags keyStorageFlags)
{
Debug.Assert(rawData != null || fileName != null);
bool loadFromFile = (fileName != null);
PfxCertStoreFlags pfxCertStoreFlags = MapKeyStorageFlags(keyStorageFlags);
bool persistKeySet = (0 != (keyStorageFlags & X509KeyStorageFlags.PersistKeySet));
CertEncodingType msgAndCertEncodingType;
ContentType contentType;
FormatType formatType;
SafeCertStoreHandle hCertStore = null;
SafeCryptMsgHandle hCryptMsg = null;
SafeCertContextHandle pCertContext = null;
try
{
unsafe
{
fixed (byte* pRawData = rawData)
{
fixed (char* pFileName = fileName)
{
CRYPTOAPI_BLOB certBlob = new CRYPTOAPI_BLOB(loadFromFile ? 0 : rawData.Length, pRawData);
CertQueryObjectType objectType = loadFromFile ? CertQueryObjectType.CERT_QUERY_OBJECT_FILE : CertQueryObjectType.CERT_QUERY_OBJECT_BLOB;
void* pvObject = loadFromFile ? (void*)pFileName : (void*)&certBlob;
bool success = Interop.crypt32.CryptQueryObject(
objectType,
pvObject,
X509ExpectedContentTypeFlags,
X509ExpectedFormatTypeFlags,
0,
out msgAndCertEncodingType,
out contentType,
out formatType,
out hCertStore,
out hCryptMsg,
out pCertContext
);
if (!success)
{
int hr = Marshal.GetHRForLastWin32Error();
throw hr.ToCryptographicException();
}
}
}
if (contentType == ContentType.CERT_QUERY_CONTENT_PKCS7_SIGNED || contentType == ContentType.CERT_QUERY_CONTENT_PKCS7_SIGNED_EMBED)
{
pCertContext = GetSignerInPKCS7Store(hCertStore, hCryptMsg);
}
else if (contentType == ContentType.CERT_QUERY_CONTENT_PFX)
{
if (loadFromFile)
rawData = File.ReadAllBytes(fileName);
pCertContext = FilterPFXStore(rawData, password, pfxCertStoreFlags);
}
CertificatePal pal = new CertificatePal(pCertContext, deleteKeyContainer: !persistKeySet);
pCertContext = null;
return pal;
}
}
finally
{
if (hCertStore != null)
hCertStore.Dispose();
if (hCryptMsg != null)
hCryptMsg.Dispose();
if (pCertContext != null)
pCertContext.Dispose();
}
}
public X509ContentType GetCertContentType(string fileName)
{
// If we can't open the file, fail right away.
using (SafeBioHandle fileBio = Interop.Crypto.BioNewFile(fileName, "rb"))
{
Interop.Crypto.CheckValidOpenSslHandle(fileBio);
int bioPosition = Interop.Crypto.BioTell(fileBio);
Debug.Assert(bioPosition >= 0);
// X509ContentType.Cert
{
ICertificatePal certPal;
if (CertificatePal.TryReadX509Der(fileBio, out certPal))
{
certPal.Dispose();
return(X509ContentType.Cert);
}
CertificatePal.RewindBio(fileBio, bioPosition);
if (CertificatePal.TryReadX509Pem(fileBio, out certPal))
{
certPal.Dispose();
return(X509ContentType.Cert);
}
CertificatePal.RewindBio(fileBio, bioPosition);
}
// X509ContentType.Pkcs7
{
if (PkcsFormatReader.IsPkcs7Der(fileBio))
{
return(X509ContentType.Pkcs7);
}
CertificatePal.RewindBio(fileBio, bioPosition);
if (PkcsFormatReader.IsPkcs7Pem(fileBio))
{
return(X509ContentType.Pkcs7);
}
CertificatePal.RewindBio(fileBio, bioPosition);
}
// X509ContentType.Pkcs12 (aka PFX)
{
OpenSslPkcs12Reader pkcs12Reader;
if (OpenSslPkcs12Reader.TryRead(fileBio, out pkcs12Reader))
{
pkcs12Reader.Dispose();
return(X509ContentType.Pkcs12);
}
CertificatePal.RewindBio(fileBio, bioPosition);
}
}
// Unsupported format.
// Windows throws new CryptographicException(CRYPT_E_NO_MATCH)
throw new CryptographicException();
}
private static ICertificatePal FromBlobOrFile(byte[] rawData, string fileName, SafePasswordHandle password, X509KeyStorageFlags keyStorageFlags)
{
Debug.Assert(rawData != null || fileName != null);
Debug.Assert(password != null);
bool loadFromFile = (fileName != null);
PfxCertStoreFlags pfxCertStoreFlags = MapKeyStorageFlags(keyStorageFlags);
bool deleteKeyContainer = false;
CertEncodingType msgAndCertEncodingType;
ContentType contentType;
FormatType formatType;
SafeCertStoreHandle hCertStore = null;
SafeCryptMsgHandle hCryptMsg = null;
SafeCertContextHandle pCertContext = null;
try
{
unsafe
{
fixed(byte *pRawData = rawData)
{
fixed(char *pFileName = fileName)
{
CRYPTOAPI_BLOB certBlob = new CRYPTOAPI_BLOB(loadFromFile ? 0 : rawData.Length, pRawData);
CertQueryObjectType objectType = loadFromFile ? CertQueryObjectType.CERT_QUERY_OBJECT_FILE : CertQueryObjectType.CERT_QUERY_OBJECT_BLOB;
void *pvObject = loadFromFile ? (void *)pFileName : (void *)&certBlob;
bool success = Interop.crypt32.CryptQueryObject(
objectType,
pvObject,
X509ExpectedContentTypeFlags,
X509ExpectedFormatTypeFlags,
0,
out msgAndCertEncodingType,
out contentType,
out formatType,
out hCertStore,
out hCryptMsg,
out pCertContext
);
if (!success)
{
int hr = Interop.CPError.GetHRForLastWin32Error();
throw hr.ToCryptographicException();
}
}
}
if (contentType == ContentType.CERT_QUERY_CONTENT_PKCS7_SIGNED || contentType == ContentType.CERT_QUERY_CONTENT_PKCS7_SIGNED_EMBED)
{
pCertContext = GetSignerInPKCS7Store(hCertStore, hCryptMsg);
}
else if (contentType == ContentType.CERT_QUERY_CONTENT_PFX)
{
if (loadFromFile)
{
rawData = File.ReadAllBytes(fileName);
}
pCertContext = FilterPFXStore(rawData, password, pfxCertStoreFlags);
// If PersistKeySet is set we don't delete the key, so that it persists.
// If EphemeralKeySet is set we don't delete the key, because there's no file, so it's a wasteful call.
const X509KeyStorageFlags DeleteUnless =
X509KeyStorageFlags.PersistKeySet | X509KeyStorageFlags.EphemeralKeySet |
// begin: gost
X509KeyStorageFlags.CspNoPersistKeySet;
// end gost
deleteKeyContainer = ((keyStorageFlags & DeleteUnless) == 0);
}
CertificatePal pal = new CertificatePal(pCertContext, deleteKeyContainer);
pCertContext = null;
return(pal);
}
}
finally
{
if (hCertStore != null)
{
hCertStore.Dispose();
}
if (hCryptMsg != null)
{
hCryptMsg.Dispose();
}
if (pCertContext != null)
{
pCertContext.Dispose();
}
}
}
private static void LoadMachineStores()
{
Debug.Assert(
Monitor.IsEntered(s_machineLoadLock),
"LoadMachineStores assumes a lock(s_machineLoadLock)");
var rootStore = new List <X509Certificate2>();
var intermedStore = new List <X509Certificate2>();
DirectoryInfo rootStorePath = null;
IEnumerable <FileInfo> trustedCertFiles;
try
{
rootStorePath = new DirectoryInfo(Interop.Crypto.GetX509RootStorePath());
}
catch (ArgumentException)
{
// If SSL_CERT_DIR is set to the empty string, or anything else which gives
// "The path is not of a legal form", then the GetX509RootStorePath value is ignored.
}
if (rootStorePath != null && rootStorePath.Exists)
{
trustedCertFiles = rootStorePath.EnumerateFiles();
}
else
{
trustedCertFiles = Array.Empty <FileInfo>();
}
FileInfo rootStoreFile = null;
try
{
rootStoreFile = new FileInfo(Interop.Crypto.GetX509RootStoreFile());
}
catch (ArgumentException)
{
// If SSL_CERT_FILE is set to the empty string, or anything else which gives
// "The path is not of a legal form", then the GetX509RootStoreFile value is ignored.
}
if (rootStoreFile != null && rootStoreFile.Exists)
{
trustedCertFiles = Append(trustedCertFiles, rootStoreFile);
}
HashSet <X509Certificate2> uniqueRootCerts = new HashSet <X509Certificate2>();
HashSet <X509Certificate2> uniqueIntermediateCerts = new HashSet <X509Certificate2>();
foreach (FileInfo file in trustedCertFiles)
{
using (SafeBioHandle fileBio = Interop.Crypto.BioNewFile(file.FullName, "rb"))
{
ICertificatePal pal;
while (CertificatePal.TryReadX509Pem(fileBio, out pal) ||
CertificatePal.TryReadX509Der(fileBio, out pal))
{
X509Certificate2 cert = new X509Certificate2(pal);
// The HashSets are just used for uniqueness filters, they do not survive this method.
if (StringComparer.Ordinal.Equals(cert.Subject, cert.Issuer))
{
if (uniqueRootCerts.Add(cert))
{
rootStore.Add(cert);
continue;
}
}
else
{
if (uniqueIntermediateCerts.Add(cert))
{
intermedStore.Add(cert);
continue;
}
}
// There's a good chance we'll encounter duplicates on systems that have both one-cert-per-file
// and one-big-file trusted certificate stores. Anything that wasn't unique will end up here.
cert.Dispose();
}
}
}
var rootStorePal = new CollectionBackedStoreProvider(rootStore);
s_machineIntermediateStore = new CollectionBackedStoreProvider(intermedStore);
// s_machineRootStore's nullarity is the loaded-state sentinel, so write it with Volatile.
Debug.Assert(Monitor.IsEntered(s_machineLoadLock), "LoadMachineStores assumes a lock(s_machineLoadLock)");
Volatile.Write(ref s_machineRootStore, rootStorePal);
}
public static ILoaderPal FromBlob(ReadOnlySpan <byte> rawData, SafePasswordHandle password, X509KeyStorageFlags keyStorageFlags)
{
List <ICertificatePal>?certificateList = null;
AppleCertificatePal.TryDecodePem(
rawData,
(derData, contentType) =>
{
certificateList = certificateList ?? new List <ICertificatePal>();
certificateList.Add(AppleCertificatePal.FromDerBlob(derData, contentType, password, keyStorageFlags));
return(true);
});
if (certificateList != null)
{
return(new CertCollectionLoader(certificateList));
}
X509ContentType contentType = AppleCertificatePal.GetDerCertContentType(rawData);
if (contentType == X509ContentType.Pkcs7)
{
throw new CryptographicException(
SR.Cryptography_X509_PKCS7_Unsupported,
new PlatformNotSupportedException(SR.Cryptography_X509_PKCS7_Unsupported));
}
if (contentType == X509ContentType.Pkcs12)
{
ApplePkcs12Reader reader = new ApplePkcs12Reader(rawData);
try
{
reader.Decrypt(password);
return(new ApplePkcs12CertLoader(reader, password));
}
catch
{
reader.Dispose();
throw;
}
}
SafeCFArrayHandle certs = Interop.AppleCrypto.X509ImportCollection(
rawData,
contentType,
password);
using (certs)
{
long longCount = Interop.CoreFoundation.CFArrayGetCount(certs);
if (longCount > int.MaxValue)
{
throw new CryptographicException();
}
int count = (int)longCount;
// Apple returns things in the opposite order from Windows, so read backwards.
certificateList = new List <ICertificatePal>(count);
for (int i = count - 1; i >= 0; i--)
{
IntPtr handle = Interop.CoreFoundation.CFArrayGetValueAtIndex(certs, i);
if (handle != IntPtr.Zero)
{
ICertificatePal?certPal = CertificatePal.FromHandle(handle, throwOnFail: false);
if (certPal != null)
{
certificateList.Add(certPal);
}
}
}
}
return(new CertCollectionLoader(certificateList));
}
private CertificatePal(CertificatePal copyFrom)
{
// Use _certContext (instead of CertContext) to keep the original context handle from being
// finalized until all cert copies are no longer referenced.
_certContext = new SafeCertContextHandle(copyFrom._certContext);
}
/// <summary>
/// Returns the SafeCertContextHandle. Use this instead of FromHandle() when
/// creating another X509Certificate object based on this one to ensure the underlying
/// cert context is not released at the wrong time.
/// </summary>
public static ICertificatePal FromOtherCert(X509Certificate copyFrom)
{
CertificatePal pal = new CertificatePal((CertificatePal)copyFrom.Pal);
return(pal);
}
private static void LoadMachineStores()
{
Debug.Assert(
Monitor.IsEntered(s_machineIntermediateStore),
"LoadMachineStores assumes a lock(s_machineIntermediateStore)");
X509Certificate2Collection rootStore = new X509Certificate2Collection();
DirectoryInfo rootStorePath = null;
IEnumerable <FileInfo> trustedCertFiles;
try
{
rootStorePath = new DirectoryInfo(Interop.Crypto.GetX509RootStorePath());
}
catch (ArgumentException)
{
// If SSL_CERT_DIR is set to the empty string, or anything else which gives
// "The path is not of a legal form", then the GetX509RootStorePath value is ignored.
}
if (rootStorePath != null && rootStorePath.Exists)
{
trustedCertFiles = rootStorePath.EnumerateFiles();
}
else
{
trustedCertFiles = Array.Empty <FileInfo>();
}
FileInfo rootStoreFile = null;
try
{
rootStoreFile = new FileInfo(Interop.Crypto.GetX509RootStoreFile());
}
catch (ArgumentException)
{
// If SSL_CERT_FILE is set to the empty string, or anything else which gives
// "The path is not of a legal form", then the GetX509RootStoreFile value is ignored.
}
if (rootStoreFile != null && rootStoreFile.Exists)
{
trustedCertFiles = Append(trustedCertFiles, rootStoreFile);
}
HashSet <X509Certificate2> uniqueRootCerts = new HashSet <X509Certificate2>();
HashSet <X509Certificate2> uniqueIntermediateCerts = new HashSet <X509Certificate2>();
foreach (FileInfo file in trustedCertFiles)
{
using (SafeBioHandle fileBio = Interop.Crypto.BioNewFile(file.FullName, "rb"))
{
ICertificatePal pal;
while (CertificatePal.TryReadX509Pem(fileBio, out pal) ||
CertificatePal.TryReadX509Der(fileBio, out pal))
{
X509Certificate2 cert = new X509Certificate2(pal);
// The HashSets are just used for uniqueness filters, they do not survive this method.
if (StringComparer.Ordinal.Equals(cert.Subject, cert.Issuer))
{
if (uniqueRootCerts.Add(cert))
{
rootStore.Add(cert);
}
}
else
{
if (uniqueIntermediateCerts.Add(cert))
{
s_machineIntermediateStore.Add(cert);
}
}
}
}
}
s_machineRootStore = rootStore;
}
private static ICertificatePal FromBlobOrFile(byte[] rawData, string fileName, string password, X509KeyStorageFlags keyStorageFlags)
{
Debug.Assert(rawData != null || fileName != null);
bool loadFromFile = (fileName != null);
PfxCertStoreFlags pfxCertStoreFlags = MapKeyStorageFlags(keyStorageFlags);
bool persistKeySet = (0 != (keyStorageFlags & X509KeyStorageFlags.PersistKeySet));
CertEncodingType msgAndCertEncodingType;
ContentType contentType;
FormatType formatType;
SafeCertStoreHandle hCertStore = null;
SafeCryptMsgHandle hCryptMsg = null;
SafeCertContextHandle pCertContext = null;
try
{
unsafe
{
fixed(byte *pRawData = rawData)
{
fixed(char *pFileName = fileName)
{
CRYPTOAPI_BLOB certBlob = new CRYPTOAPI_BLOB(loadFromFile ? 0 : rawData.Length, pRawData);
CertQueryObjectType objectType = loadFromFile ? CertQueryObjectType.CERT_QUERY_OBJECT_FILE : CertQueryObjectType.CERT_QUERY_OBJECT_BLOB;
void *pvObject = loadFromFile ? (void *)pFileName : (void *)&certBlob;
bool success = Interop.crypt32.CryptQueryObject(
objectType,
pvObject,
X509ExpectedContentTypeFlags,
X509ExpectedFormatTypeFlags,
0,
out msgAndCertEncodingType,
out contentType,
out formatType,
out hCertStore,
out hCryptMsg,
out pCertContext
);
if (!success)
{
int hr = Marshal.GetHRForLastWin32Error();
throw hr.ToCryptographicException();
}
}
}
if (contentType == ContentType.CERT_QUERY_CONTENT_PKCS7_SIGNED || contentType == ContentType.CERT_QUERY_CONTENT_PKCS7_SIGNED_EMBED)
{
pCertContext = GetSignerInPKCS7Store(hCertStore, hCryptMsg);
}
else if (contentType == ContentType.CERT_QUERY_CONTENT_PFX)
{
if (loadFromFile)
{
rawData = File.ReadAllBytes(fileName);
}
pCertContext = FilterPFXStore(rawData, password, pfxCertStoreFlags);
}
CertificatePal pal = new CertificatePal(pCertContext, deleteKeyContainer: !persistKeySet);
pCertContext = null;
return(pal);
}
}
finally
{
if (hCertStore != null)
{
hCertStore.Dispose();
}
if (hCryptMsg != null)
{
hCryptMsg.Dispose();
}
if (pCertContext != null)
{
pCertContext.Dispose();
}
}
}
private static ILoaderPal FromBio(SafeBioHandle bio, SafePasswordHandle password)
{
int bioPosition = Interop.Crypto.BioTell(bio);
Debug.Assert(bioPosition >= 0);
ICertificatePal singleCert;
if (CertificatePal.TryReadX509Pem(bio, out singleCert))
{
return(SingleCertToLoaderPal(singleCert));
}
// Rewind, try again.
CertificatePal.RewindBio(bio, bioPosition);
if (CertificatePal.TryReadX509Der(bio, out singleCert))
{
return(SingleCertToLoaderPal(singleCert));
}
// Rewind, try again.
CertificatePal.RewindBio(bio, bioPosition);
List <ICertificatePal> certPals;
if (PkcsFormatReader.TryReadPkcs7Pem(bio, out certPals))
{
return(ListToLoaderPal(certPals));
}
// Rewind, try again.
CertificatePal.RewindBio(bio, bioPosition);
if (PkcsFormatReader.TryReadPkcs7Der(bio, out certPals))
{
return(ListToLoaderPal(certPals));
}
// Rewind, try again.
CertificatePal.RewindBio(bio, bioPosition);
// Capture the exception so in case of failure, the call to BioSeek does not override it.
Exception openSslException;
if (PkcsFormatReader.TryReadPkcs12(bio, password, out certPals, out openSslException))
{
return(ListToLoaderPal(certPals));
}
// Since we aren't going to finish reading, leaving the buffer where it was when we got
// it seems better than leaving it in some arbitrary other position.
//
// Use BioSeek directly for the last seek attempt, because any failure here should instead
// report the already created (but not yet thrown) exception.
if (Interop.Crypto.BioSeek(bio, bioPosition) < 0)
{
Interop.Crypto.ErrClearError();
}
Debug.Assert(openSslException != null);
throw openSslException;
}