public static extern IntPtr CertCreateSelfSignCertificate(
IntPtr providerHandle,
[In] ref CryptoApiBlob subjectIssuerBlob,
int flags,
[In] ref CryptKeyProviderInformation keyProviderInformation,
[In] ref CryptAlgorithmIdentifier algorithmIdentifier,
[In] ref SystemTime startTime,
[In] ref SystemTime endTime,
IntPtr extensions);
private static byte[] CreateSelfSignCertificatePfx(
string x500,
DateTime startTime,
DateTime endTime)
{
byte[] pfxData;
if (x500 == null)
{
x500 = "";
}
SystemTime startSystemTime = ToSystemTime(startTime);
SystemTime endSystemTime = ToSystemTime(endTime);
string containerName = Guid.NewGuid().ToString();
GCHandle dataHandle = new GCHandle();
IntPtr providerContext = IntPtr.Zero;
IntPtr cryptKey = IntPtr.Zero;
IntPtr certContext = IntPtr.Zero;
IntPtr certStore = IntPtr.Zero;
IntPtr storeCertContext = IntPtr.Zero;
IntPtr passwordPtr = IntPtr.Zero;
RuntimeHelpers.PrepareConstrainedRegions();
try
{
Check(NativeMethods.CryptAcquireContextW(
out providerContext,
containerName,
null,
1, // PROV_RSA_FULL
8)); // CRYPT_NEWKEYSET
Check(NativeMethods.CryptGenKey(
providerContext,
1, // AT_KEYEXCHANGE
1 | 2048 << 16, // CRYPT_EXPORTABLE 2048 bit key
out cryptKey));
IntPtr errorStringPtr;
int nameDataLength = 0;
byte[] nameData;
// errorStringPtr gets a pointer into the middle of the x500 string,
// so x500 needs to be pinned until after we've copied the value
// of errorStringPtr.
dataHandle = GCHandle.Alloc(x500, GCHandleType.Pinned);
if (!NativeMethods.CertStrToNameW(
0x00010001, // X509_ASN_ENCODING | PKCS_7_ASN_ENCODING
dataHandle.AddrOfPinnedObject(),
3, // CERT_X500_NAME_STR = 3
IntPtr.Zero,
null,
ref nameDataLength,
out errorStringPtr))
{
string error = Marshal.PtrToStringUni(errorStringPtr);
throw new ArgumentException(error);
}
nameData = new byte[nameDataLength];
if (!NativeMethods.CertStrToNameW(
0x00010001, // X509_ASN_ENCODING | PKCS_7_ASN_ENCODING
dataHandle.AddrOfPinnedObject(),
3, // CERT_X500_NAME_STR = 3
IntPtr.Zero,
nameData,
ref nameDataLength,
out errorStringPtr))
{
string error = Marshal.PtrToStringUni(errorStringPtr);
throw new ArgumentException(error);
}
dataHandle.Free();
dataHandle = GCHandle.Alloc(nameData, GCHandleType.Pinned);
CryptoApiBlob nameBlob = new CryptoApiBlob(
nameData.Length,
dataHandle.AddrOfPinnedObject());
CryptKeyProviderInformation kpi = new CryptKeyProviderInformation();
kpi.ContainerName = containerName;
kpi.ProviderType = 1; // PROV_RSA_FULL
kpi.KeySpec = 1; // AT_KEYEXCHANGE
CryptAlgorithmIdentifier sha256Identifier = new CryptAlgorithmIdentifier();
sha256Identifier.pszObjId = "1.2.840.113549.1.1.11";
certContext = NativeMethods.CertCreateSelfSignCertificate(
providerContext,
ref nameBlob,
0,
ref kpi,
ref sha256Identifier,
ref startSystemTime,
ref endSystemTime,
IntPtr.Zero);
Check(certContext != IntPtr.Zero);
dataHandle.Free();
certStore = NativeMethods.CertOpenStore(
"Memory", // sz_CERT_STORE_PROV_MEMORY
0,
IntPtr.Zero,
0x2000, // CERT_STORE_CREATE_NEW_FLAG
IntPtr.Zero);
Check(certStore != IntPtr.Zero);
Check(NativeMethods.CertAddCertificateContextToStore(
certStore,
certContext,
1, // CERT_STORE_ADD_NEW
out storeCertContext));
NativeMethods.CertSetCertificateContextProperty(
storeCertContext,
2, // CERT_KEY_PROV_INFO_PROP_ID
0,
ref kpi);
CryptoApiBlob pfxBlob = new CryptoApiBlob();
Check(NativeMethods.PFXExportCertStoreEx(
certStore,
ref pfxBlob,
passwordPtr,
IntPtr.Zero,
7)); // EXPORT_PRIVATE_KEYS | REPORT_NO_PRIVATE_KEY | REPORT_NOT_ABLE_TO_EXPORT_PRIVATE_KEY
pfxData = new byte[pfxBlob.DataLength];
dataHandle = GCHandle.Alloc(pfxData, GCHandleType.Pinned);
pfxBlob.Data = dataHandle.AddrOfPinnedObject();
Check(NativeMethods.PFXExportCertStoreEx(
certStore,
ref pfxBlob,
passwordPtr,
IntPtr.Zero,
7)); // EXPORT_PRIVATE_KEYS | REPORT_NO_PRIVATE_KEY | REPORT_NOT_ABLE_TO_EXPORT_PRIVATE_KEY
dataHandle.Free();
}
finally
{
if (passwordPtr != IntPtr.Zero)
{
Marshal.ZeroFreeCoTaskMemUnicode(passwordPtr);
}
if (dataHandle.IsAllocated)
{
dataHandle.Free();
}
if (certContext != IntPtr.Zero)
{
NativeMethods.CertFreeCertificateContext(certContext);
}
if (storeCertContext != IntPtr.Zero)
{
NativeMethods.CertFreeCertificateContext(storeCertContext);
}
if (certStore != IntPtr.Zero)
{
NativeMethods.CertCloseStore(certStore, 0);
}
if (cryptKey != IntPtr.Zero)
{
NativeMethods.CryptDestroyKey(cryptKey);
}
if (providerContext != IntPtr.Zero)
{
NativeMethods.CryptReleaseContext(providerContext, 0);
NativeMethods.CryptAcquireContextW(
out providerContext,
containerName,
null,
1, // PROV_RSA_FULL
0x10); // CRYPT_DELETEKEYSET
}
}
return(pfxData);
}
private static byte[] CreateSelfSignCertificatePfx(
string x500,
DateTime startTime,
DateTime endTime)
{
byte[] pfxData;
if (x500 == null)
{
x500 = "";
}
SystemTime startSystemTime = ToSystemTime(startTime);
SystemTime endSystemTime = ToSystemTime(endTime);
string containerName = Guid.NewGuid().ToString();
GCHandle dataHandle = new GCHandle();
IntPtr providerContext = IntPtr.Zero;
IntPtr cryptKey = IntPtr.Zero;
IntPtr certContext = IntPtr.Zero;
IntPtr certStore = IntPtr.Zero;
IntPtr storeCertContext = IntPtr.Zero;
IntPtr passwordPtr = IntPtr.Zero;
RuntimeHelpers.PrepareConstrainedRegions();
try
{
Check(NativeMethods.CryptAcquireContextW(
out providerContext,
containerName,
null,
1, // PROV_RSA_FULL
8)); // CRYPT_NEWKEYSET
Check(NativeMethods.CryptGenKey(
providerContext,
1, // AT_KEYEXCHANGE
1 | 2048 << 16, // CRYPT_EXPORTABLE 2048 bit key
out cryptKey));
IntPtr errorStringPtr;
int nameDataLength = 0;
byte[] nameData;
// errorStringPtr gets a pointer into the middle of the x500 string,
// so x500 needs to be pinned until after we've copied the value
// of errorStringPtr.
dataHandle = GCHandle.Alloc(x500, GCHandleType.Pinned);
if (!NativeMethods.CertStrToNameW(
0x00010001, // X509_ASN_ENCODING | PKCS_7_ASN_ENCODING
dataHandle.AddrOfPinnedObject(),
3, // CERT_X500_NAME_STR = 3
IntPtr.Zero,
null,
ref nameDataLength,
out errorStringPtr))
{
string error = Marshal.PtrToStringUni(errorStringPtr);
throw new ArgumentException(error);
}
nameData = new byte[nameDataLength];
if (!NativeMethods.CertStrToNameW(
0x00010001, // X509_ASN_ENCODING | PKCS_7_ASN_ENCODING
dataHandle.AddrOfPinnedObject(),
3, // CERT_X500_NAME_STR = 3
IntPtr.Zero,
nameData,
ref nameDataLength,
out errorStringPtr))
{
string error = Marshal.PtrToStringUni(errorStringPtr);
throw new ArgumentException(error);
}
dataHandle.Free();
dataHandle = GCHandle.Alloc(nameData, GCHandleType.Pinned);
CryptoApiBlob nameBlob = new CryptoApiBlob(
nameData.Length,
dataHandle.AddrOfPinnedObject());
CryptKeyProviderInformation kpi = new CryptKeyProviderInformation();
kpi.ContainerName = containerName;
kpi.ProviderType = 1; // PROV_RSA_FULL
kpi.KeySpec = 1; // AT_KEYEXCHANGE
CryptAlgorithmIdentifier sha256Identifier = new CryptAlgorithmIdentifier();
sha256Identifier.pszObjId = "1.2.840.113549.1.1.11";
certContext = NativeMethods.CertCreateSelfSignCertificate(
providerContext,
ref nameBlob,
0,
ref kpi,
ref sha256Identifier,
ref startSystemTime,
ref endSystemTime,
IntPtr.Zero);
Check(certContext != IntPtr.Zero);
dataHandle.Free();
certStore = NativeMethods.CertOpenStore(
"Memory", // sz_CERT_STORE_PROV_MEMORY
0,
IntPtr.Zero,
0x2000, // CERT_STORE_CREATE_NEW_FLAG
IntPtr.Zero);
Check(certStore != IntPtr.Zero);
Check(NativeMethods.CertAddCertificateContextToStore(
certStore,
certContext,
1, // CERT_STORE_ADD_NEW
out storeCertContext));
NativeMethods.CertSetCertificateContextProperty(
storeCertContext,
2, // CERT_KEY_PROV_INFO_PROP_ID
0,
ref kpi);
CryptoApiBlob pfxBlob = new CryptoApiBlob();
Check(NativeMethods.PFXExportCertStoreEx(
certStore,
ref pfxBlob,
passwordPtr,
IntPtr.Zero,
7)); // EXPORT_PRIVATE_KEYS | REPORT_NO_PRIVATE_KEY | REPORT_NOT_ABLE_TO_EXPORT_PRIVATE_KEY
pfxData = new byte[pfxBlob.DataLength];
dataHandle = GCHandle.Alloc(pfxData, GCHandleType.Pinned);
pfxBlob.Data = dataHandle.AddrOfPinnedObject();
Check(NativeMethods.PFXExportCertStoreEx(
certStore,
ref pfxBlob,
passwordPtr,
IntPtr.Zero,
7)); // EXPORT_PRIVATE_KEYS | REPORT_NO_PRIVATE_KEY | REPORT_NOT_ABLE_TO_EXPORT_PRIVATE_KEY
dataHandle.Free();
}
finally
{
if (passwordPtr != IntPtr.Zero)
{
Marshal.ZeroFreeCoTaskMemUnicode(passwordPtr);
}
if (dataHandle.IsAllocated)
{
dataHandle.Free();
}
if (certContext != IntPtr.Zero)
{
NativeMethods.CertFreeCertificateContext(certContext);
}
if (storeCertContext != IntPtr.Zero)
{
NativeMethods.CertFreeCertificateContext(storeCertContext);
}
if (certStore != IntPtr.Zero)
{
NativeMethods.CertCloseStore(certStore, 0);
}
if (cryptKey != IntPtr.Zero)
{
NativeMethods.CryptDestroyKey(cryptKey);
}
if (providerContext != IntPtr.Zero)
{
NativeMethods.CryptReleaseContext(providerContext, 0);
NativeMethods.CryptAcquireContextW(
out providerContext,
containerName,
null,
1, // PROV_RSA_FULL
0x10); // CRYPT_DELETEKEYSET
}
}
return pfxData;
}
