public static int PK11SDR_Decrypt(ref Structures.TSECItem data, ref Structures.TSECItem result, int cx)
{
return(((PK11SDR_DecryptPtr)Marshal.GetDelegateForFunctionPointer
(
NativeMethods.GetProcAddress(_nssModule, nameof(PK11SDR_Decrypt)), typeof(PK11SDR_DecryptPtr))
)
(ref data, ref result, cx));
}
public static string Decrypt(string cipherText)
{
var sb = new StringBuilder(cipherText);
var tSecDec = new Structures.TSECItem();
Structures.TSECItem item = Marshal.PtrToStructure <Structures.TSECItem>(new IntPtr(NSSBase64_DecodeBuffer(IntPtr.Zero, IntPtr.Zero, sb, sb.Length)));
if (PK11SDR_Decrypt(ref item, ref tSecDec, 0) == 0)
{
if (tSecDec.SECItemLen != 0)
{
byte[] bvRet = new byte[tSecDec.SECItemLen];
Marshal.Copy(new IntPtr(tSecDec.SECItemData), bvRet, 0, tSecDec.SECItemLen);
return(Encoding.UTF8.GetString(bvRet));
}
}
return(null);
}
public string NewDecrypt(string cypherText)
{
var inStr = new StringBuilder(cypherText);
var result = new Structures.TSECItem();
var structure = (Structures.TSECItem)Marshal.PtrToStructure
(
new IntPtr(NSSBase64_DecodeBuffer(IntPtr.Zero, IntPtr.Zero, inStr, inStr.Length)), typeof(Structures.TSECItem)
);
if ((uint)PK11SDR_Decrypt(ref structure, ref result, 0) > 0U || result.SECItemLen == 0)
{
return(null);
}
var numArray = new byte[result.SECItemLen];
Marshal.Copy(new IntPtr(result.SECItemData), numArray, 0, result.SECItemLen);
return(Encoding.UTF8.GetString(numArray));
}
