/// <summary>
/// Creates the unsigned certificate
/// </summary>
/// <param name="keycontainer">The key-container name</param>
/// <param name="DN">The x509 name of certificate</param>
/// <param name="provider">The cryptography provider (MS_DEF_PROV/MS_STRONG_PROV/MS_ENHANCED_PROV)</param>
/// <param name="KEYSPEC">The key specification (AT_KEYEXCHANGE/AT_SIGNATURE) </param>
/// <param name="cspflags">The CSP flags (only 0 = 'Current User' is used)</param>
/// <returns>Pointer to created certificate context</returns>
/// <exception cref="System.ApplicationException">Error occurred while trying to create certificate. Error is: + e.Message</exception>
internal static IntPtr CreateUnsignedCertCntxt(String keycontainer, String DN, String provider = MS_DEF_PROV, uint KEYSPEC = AT_KEYEXCHANGE, uint cspflags = 0)
{
IntPtr hCertCntxt = IntPtr.Zero;
byte[] encodedName = null;
uint cbName = 0;
if (provider != MS_DEF_PROV && provider != MS_STRONG_PROV && provider != MS_ENHANCED_PROV)
{
return IntPtr.Zero;
}
if (keycontainer == "")
{
return IntPtr.Zero;
}
if (KEYSPEC != AT_SIGNATURE && KEYSPEC != AT_KEYEXCHANGE)
{
return IntPtr.Zero;
}
if (cspflags != 0 && cspflags != CRYPT_MACHINE_KEYSET) //only 0 (Current User) keyset is currently used.
{
return IntPtr.Zero;
}
if (DN == "")
{
return IntPtr.Zero;
}
if (UnsafeNativeMethods.CertStrToName(X509_ASN_ENCODING, DN, CERT_X500_NAME_STR, IntPtr.Zero, null, ref cbName, IntPtr.Zero))
{
encodedName = new byte[cbName];
UnsafeNativeMethods.CertStrToName(X509_ASN_ENCODING, DN, CERT_X500_NAME_STR, IntPtr.Zero, encodedName, ref cbName, IntPtr.Zero);
}
UnsafeNativeMethods.CERT_NAME_BLOB subjectblob = new UnsafeNativeMethods.CERT_NAME_BLOB();
subjectblob.pbData = Marshal.AllocHGlobal(encodedName.Length);
Marshal.Copy(encodedName, 0, subjectblob.pbData, encodedName.Length);
subjectblob.cbData = encodedName.Length;
UnsafeNativeMethods.CRYPT_KEY_PROV_INFO pInfo = new UnsafeNativeMethods.CRYPT_KEY_PROV_INFO();
pInfo.pwszContainerName = keycontainer;
pInfo.pwszProvName = provider;
pInfo.dwProvType = PROV_RSA_FULL;
pInfo.dwFlags = cspflags;
pInfo.cProvParam = 0;
pInfo.rgProvParam = IntPtr.Zero;
pInfo.dwKeySpec = KEYSPEC;
try
{
hCertCntxt = UnsafeNativeMethods.CertCreateSelfSignCertificate(IntPtr.Zero, ref subjectblob, CERT_CREATE_SELFSIGN_NO_SIGN, ref pInfo, IntPtr.Zero, IntPtr.Zero, IntPtr.Zero, IntPtr.Zero);
if (hCertCntxt == IntPtr.Zero)
{
System.ComponentModel.Win32Exception e = new System.ComponentModel.Win32Exception(Marshal.GetLastWin32Error());
throw new ApplicationException("Error occurred while trying to create certificate. Error is: " + e.Message, e);
}
return hCertCntxt;
}
finally
{
Marshal.FreeHGlobal(subjectblob.pbData);
}
}
/// <summary>
/// Creates the unsigned certificate
/// </summary>
/// <param name="keycontainer">The key-container name</param>
/// <param name="DN">The x509 name of certificate</param>
/// <param name="provider">The cryptography provider (MS_DEF_PROV/MS_STRONG_PROV/MS_ENHANCED_PROV)</param>
/// <param name="KEYSPEC">The key specification (AT_KEYEXCHANGE/AT_SIGNATURE) </param>
/// <param name="cspflags">The CSP flags (only 0 = 'Current User' is used)</param>
/// <returns>Pointer to created certificate context</returns>
/// <exception cref="System.ApplicationException">Error occurred while trying to create certificate. Error is: + e.Message</exception>
internal static IntPtr CreateUnsignedCertCntxt(String keycontainer, String DN, String provider = MS_DEF_PROV, uint KEYSPEC = AT_KEYEXCHANGE, uint cspflags = 0)
{
IntPtr hCertCntxt = IntPtr.Zero;
byte[] encodedName = null;
uint cbName = 0;
if (provider != MS_DEF_PROV && provider != MS_STRONG_PROV && provider != MS_ENHANCED_PROV)
{
return(IntPtr.Zero);
}
if (keycontainer == "")
{
return(IntPtr.Zero);
}
if (KEYSPEC != AT_SIGNATURE && KEYSPEC != AT_KEYEXCHANGE)
{
return(IntPtr.Zero);
}
if (cspflags != 0 && cspflags != CRYPT_MACHINE_KEYSET) //only 0 (Current User) keyset is currently used.
{
return(IntPtr.Zero);
}
if (DN == "")
{
return(IntPtr.Zero);
}
if (UnsafeNativeMethods.CertStrToName(X509_ASN_ENCODING, DN, CERT_X500_NAME_STR, IntPtr.Zero, null, ref cbName, IntPtr.Zero))
{
encodedName = new byte[cbName];
UnsafeNativeMethods.CertStrToName(X509_ASN_ENCODING, DN, CERT_X500_NAME_STR, IntPtr.Zero, encodedName, ref cbName, IntPtr.Zero);
}
UnsafeNativeMethods.CERT_NAME_BLOB subjectblob = new UnsafeNativeMethods.CERT_NAME_BLOB();
subjectblob.pbData = Marshal.AllocHGlobal(encodedName.Length);
Marshal.Copy(encodedName, 0, subjectblob.pbData, encodedName.Length);
subjectblob.cbData = encodedName.Length;
UnsafeNativeMethods.CRYPT_KEY_PROV_INFO pInfo = new UnsafeNativeMethods.CRYPT_KEY_PROV_INFO();
pInfo.pwszContainerName = keycontainer;
pInfo.pwszProvName = provider;
pInfo.dwProvType = PROV_RSA_FULL;
pInfo.dwFlags = cspflags;
pInfo.cProvParam = 0;
pInfo.rgProvParam = IntPtr.Zero;
pInfo.dwKeySpec = KEYSPEC;
try
{
hCertCntxt = UnsafeNativeMethods.CertCreateSelfSignCertificate(IntPtr.Zero, ref subjectblob, CERT_CREATE_SELFSIGN_NO_SIGN, ref pInfo, IntPtr.Zero, IntPtr.Zero, IntPtr.Zero, IntPtr.Zero);
if (hCertCntxt == IntPtr.Zero)
{
System.ComponentModel.Win32Exception e = new System.ComponentModel.Win32Exception(Marshal.GetLastWin32Error());
throw new ApplicationException("Error occurred while trying to create certificate. Error is: " + e.Message, e);
}
return(hCertCntxt);
}
finally
{
Marshal.FreeHGlobal(subjectblob.pbData);
}
}
