public static unsafe string CertGetNameString(
SafeCertContextHandle certContext,
CertNameType certNameType,
CertNameFlags certNameFlags,
CertNameStringType strType)
{
int cchCount = CertGetNameString(certContext, certNameType, certNameFlags, strType, null, 0);
if (cchCount == 0)
{
throw Marshal.GetLastWin32Error().ToCryptographicException();
}
Span <char> buffer = cchCount <= 256 ? stackalloc char[cchCount] : new char[cchCount];
fixed(char *ptr = &MemoryMarshal.GetReference(buffer))
{
if (CertGetNameString(certContext, certNameType, certNameFlags, strType, ptr, cchCount) == 0)
{
throw Marshal.GetLastWin32Error().ToCryptographicException();
}
Debug.Assert(buffer[cchCount - 1] == '\0');
return(new string(buffer.Slice(0, cchCount - 1)));
}
}
public static unsafe string CertGetNameString(
SafeCertContextHandle certContext,
CertNameType certNameType,
CertNameFlags certNameFlags,
CertNameStringType strType)
{
const int sizeof_wchar_t = 4;
int cchCount = CertGetNameString(certContext, certNameType, certNameFlags, strType, null, 0);
if (cchCount == 0)
{
throw Marshal.GetLastWin32Error().ToCryptographicException();
}
Span <byte> buffer = cchCount <= 256 ? stackalloc byte[cchCount * sizeof_wchar_t] : new byte[cchCount * sizeof_wchar_t];
fixed(byte *ptr = &MemoryMarshal.GetReference(buffer))
{
if (CertGetNameString(certContext, certNameType, certNameFlags, strType, ptr, cchCount) == 0)
{
throw Marshal.GetLastWin32Error().ToCryptographicException();
}
Debug.Assert(buffer[(cchCount - 1) * sizeof_wchar_t] == '\0');
// return new string(buffer.Slice(0, cchCount - 1));
return(System.Text.Encoding.UTF32.GetString(buffer.Slice(0, (cchCount - 1) * sizeof_wchar_t).ToArray()));
}
}
public static extern int CertGetNameString(
IntPtr pCertContext,
CertNameType dwType,
int dwFlags,
IntPtr pvTypePara,
IntPtr pszNameString,
int cchNameString);
public static extern bool CertStrToName(
X509Encoding dwCertEncodingType,
String pszX500,
CertNameType dwStrType,
IntPtr pvReserved,
[In, Out] byte[] pbEncoded,
ref int pcbEncoded,
IntPtr other);
public static string GetCertNameAttribute(IntPtr pCert, CertNameType nameType)
{
IntPtr pName = IntPtr.Zero;
int length = 0;
length = CertGetNameString(pCert, nameType, 0, IntPtr.Zero, pName, length);
if (length == 1)
{
return("");
}
pName = Marshal.AllocHGlobal(length * 2);
length = CertGetNameString(pCert, nameType, 0, IntPtr.Zero, pName, length);
string name = Marshal.PtrToStringUni(pName, length - 1);
Marshal.FreeHGlobal(pName);
return(name);
}
private static String GetCertNameInfo(SafeCertContextHandle pCertContext, CertNameType dwNameType, CertNameFlags dwNameFlags)
{
Debug.Assert(dwNameType != CertNameType.CERT_NAME_ATTR_TYPE);
CertNameStringType stringType = CertNameStringType.CERT_X500_NAME_STR | CertNameStringType.CERT_NAME_STR_REVERSE_FLAG;
int cch = Interop.crypt32.CertGetNameString(pCertContext, dwNameType, dwNameFlags, ref stringType, null, 0);
if (cch == 0)
{
throw Marshal.GetLastWin32Error().ToCryptographicException();
}
StringBuilder sb = new StringBuilder(cch);
if (0 == Interop.crypt32.CertGetNameString(pCertContext, dwNameType, dwNameFlags, ref stringType, sb, cch))
{
throw Marshal.GetLastWin32Error().ToCryptographicException();
}
return(sb.ToString());
}
public string GetNameInfo(X509NameType nameType, bool forIssuer)
{
CertNameType certNameType = MapNameType(nameType);
CertNameFlags certNameFlags = forIssuer ? CertNameFlags.CERT_NAME_ISSUER_FLAG : CertNameFlags.None;
CertNameStrTypeAndFlags strType = CertNameStrTypeAndFlags.CERT_X500_NAME_STR | CertNameStrTypeAndFlags.CERT_NAME_STR_REVERSE_FLAG;
int cchCount = Interop.crypt32.CertGetNameString(_certContext, certNameType, certNameFlags, ref strType, null, 0);
if (cchCount == 0)
{
throw Marshal.GetLastWin32Error().ToCryptographicException();
}
StringBuilder sb = new StringBuilder(cchCount);
if (Interop.crypt32.CertGetNameString(_certContext, certNameType, certNameFlags, ref strType, sb, cchCount) == 0)
{
throw Marshal.GetLastWin32Error().ToCryptographicException();
}
return(sb.ToString());
}
public static extern int CertGetNameString(SafeCertContextHandle pCertContext, CertNameType dwType, CertNameFlags dwFlags, [In] ref CertNameStringType pvPara, [Out] StringBuilder pszNameString, int cchNameString);
private static unsafe partial int CertGetNameString(SafeCertContextHandle pCertContext, CertNameType dwType, CertNameFlags dwFlags, in CertNameStringType pvTypePara, char *pszNameString, int cchNameString);
private static unsafe string GetCertNameInfo(SafeCertContextHandle pCertContext, CertNameType dwNameType, CertNameFlags dwNameFlags)
{
Debug.Assert(dwNameType != CertNameType.CERT_NAME_ATTR_TYPE);
return(Interop.crypt32.CertGetNameString(
pCertContext,
dwNameType,
dwNameFlags,
CertNameStringType.CERT_X500_NAME_STR | CertNameStringType.CERT_NAME_STR_REVERSE_FLAG));
}
public static extern int CertGetNameString(SafeCertContextHandle pCertContext, CertNameType dwType, CertNameFlags dwFlags, [In] ref CertNameStringType pvTypePara, [Out] StringBuilder pszNameString, int cchNameString);
private static extern unsafe int CertGetNameString(SafeCertContextHandle pCertContext, CertNameType dwType, CertNameFlags dwFlags, in CertNameStringType pvTypePara, byte *pszNameString, int cchNameString);
internal static extern int CertNameToStr(X509Encoding dwCertEncodingType, ref CRYPT_DATA_BLOB pName, CertNameType dwStrType, [In, Out] char[] psz, int csz);
private static string GetCertNameInfo(SafeCertContextHandle pCertContext, CertNameType dwNameType, CertNameFlags dwNameFlags)
{
Debug.Assert(dwNameType != CertNameType.CERT_NAME_ATTR_TYPE);
CertNameStringType stringType = CertNameStringType.CERT_X500_NAME_STR | CertNameStringType.CERT_NAME_STR_REVERSE_FLAG;
int cch = Interop.crypt32.CertGetNameString(pCertContext, dwNameType, dwNameFlags, ref stringType, null, 0);
if (cch == 0)
throw Marshal.GetLastWin32Error().ToCryptographicException();
StringBuilder sb = new StringBuilder(cch);
if (0 == Interop.crypt32.CertGetNameString(pCertContext, dwNameType, dwNameFlags, ref stringType, sb, cch))
throw Marshal.GetLastWin32Error().ToCryptographicException();
return sb.ToString();
}
