CryptImportKey & PLAINTEXTKEYBLOB

From: Oleg Leikin (Leikin_at_discussions.microsoft.com)
Date: 06/27/04 

Date: Sun, 27 Jun 2004 09:11:01 -0700

Hi All,

the same code works under XP and fails under 2000 (GetLastError returns NTE_BAD_TYPE ater CryptImportKey is executed):

.......................................

DWORD keyBlobLength = 0;
BYTE* pKeyBlob = NULL;
Key2PLAINTEXTKEYBLOB(CALG_3DES, pKeyBase, keyBaseLength, &pKeyBlob,keyBlobLength);

if(!pKeyBlob)
     return false;

// import key to CSP
if(!CryptImportKey( hProv,
                pKeyBlob,
                keyBlobLength,
                NULL,
                0,
                &hKey
                  ))
{
   delete pKeyBlob;
   return false;
}
.......................................

where Key2PLAINTEXTKEYBLOB:
//////////////
Key2PLAINTEXTKEYBLOB(ALG_ID alg, BYTE* pKey, DWORD keyLength, BYTE** ppKeyBlob, DWORD &keyBlobLength)
{
   // allocate blob
   keyBlobLength = 2 * sizeof(BYTE) + sizeof(WORD) + sizeof(ALG_ID) + sizeof(DWORD) + keyLength;
 *ppKeyBlob = new BYTE[keyBlobLength];
        
   if(*ppKeyBlob)
   {
        // init blob header
        BYTE type = PLAINTEXTKEYBLOB;
        BYTE version = CUR_BLOB_VERSION;
        WORD reserved = 0;
                
        int index = 0;
        // blob type
       (*ppKeyBlob)[index] = type;
       index ++;
       // blob version
       (*ppKeyBlob)[index] = version;
       index ++;
       // reserved
       memcpy((*ppKeyBlob) + index, (WORD*)&reserved, sizeof(WORD));
       index += sizeof(WORD);
       // key alg
       memcpy((*ppKeyBlob) + index, (ALG_ID*)&alg, sizeof(ALG_ID));
       index += sizeof(ALG_ID);
       // key length
       memcpy((*ppKeyBlob) + index, (DWORD*)&keyLength, sizeof(DWORD));
       index += sizeof(DWORD);
       // key
       memcpy((*ppKeyBlob) + index, pKey, keyLength);
      }
      else
           keyBlobLength = 0;
}
//////////////

Thanks in advance for any clue !
Oleg