CKR_BUFFER_TOO_SMALL = 0x00000150
我想从 .dll 中 PInvoke C_Encrypt() "pkcs#11" ：
[DllImport("cryptoki.dll", SetLastError = true)]
private static extern UInt32 C_Encrypt(CK_SESSION_HANDLE hSession,IntPtr pData,CK_ULONG ulDataLen,out IntPtr pEncryptedData,out CK_ULONG pulEncryptedData);
/*
.... Main
in which I initialize the encryption parametrs with C_EncyptInit
*/
CK_BYTE[] text = new CK_BYTE[] { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x08, 0x09 };
System.UInt32 t, tt = (System.UInt32)text.Length;
IntPtr pdata = Marshal.AllocHGlobal(text.Length);
Marshal.Copy(text, 0, pdata, text.Length);
IntPtr chif = IntPtr.Zero;
tt = (System.UInt32)Marshal.SizeOf(pdata);
rv = C_Encrypt(h, pdata, tt, out chif, out t);
请帮忙
I want to PInvoke C_Encrypt() "pkcs#11" from a .dll :
[DllImport("cryptoki.dll", SetLastError = true)]
private static extern UInt32 C_Encrypt(CK_SESSION_HANDLE hSession,IntPtr pData,CK_ULONG ulDataLen,out IntPtr pEncryptedData,out CK_ULONG pulEncryptedData);
/*
.... Main
in which I initialize the encryption parametrs with C_EncyptInit
*/
CK_BYTE[] text = new CK_BYTE[] { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x08, 0x09 };
System.UInt32 t, tt = (System.UInt32)text.Length;
IntPtr pdata = Marshal.AllocHGlobal(text.Length);
Marshal.Copy(text, 0, pdata, text.Length);
IntPtr chif = IntPtr.Zero;
tt = (System.UInt32)Marshal.SizeOf(pdata);
rv = C_Encrypt(h, pdata, tt, out chif, out t);
help please
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这里有各种各样不同的问题。
out参数。C_Encrypt函数会将加密数据写入这些参数，但您需要自己分配和传递它们。chif分配数据，然后将为chif分配的大小作为最终参数t传递。这是您所看到的错误的根本原因。tt和t，因为你分配给tt两次。There's a variety of different problems here.
outparameters. TheC_Encryptfunction will write the encrypted data to those parameters, but you need to allocate and pass them yourself.chif, and then pass the size that you allocated forchifas the final paramt. This is the root cause of the error that you're seeing.ttandtsomewhere, since you assign totttwice.我自己解决了这个问题：
享受
I resolved the problem By my self:
enjoy