CryptImportKey returns NTE_BAD_TYPE

From: sunit (sunit_at_newsgroup.nospam)
Date: 10/26/05 

Date: Wed, 26 Oct 2005 18:45:49 +0530

I am importing my private keys using CryptImportkey ,but it returns an error NTE_BAD_TYPE
.My private keys are in the CrytoAPI PRIVATEKEYBLOB format in unencrypted form http://msdn.microsoft.com/library/default.asp?url=/library/en-us/seccrypto/security/private_key_blobs.asp

My private keys are stored in a file _privatekeyblob.First I found the size of the PRIVATEKEYBLOB file using API FindFirstFile and stored in dwKeyBlobLen. Then I stored the contents of PRIVATEKEYBLOB file in a buffer pbKeyBlob.

/*code for importing the private keys in conatainer*/

HCRYPTKEY hKey;
CRYPT_DER_BLOB BLOB;
  
   BLOB.cbData=dwKeyBlobLen; //length of the keys in bytes
   BLOB.pbData=pbKeyBlob;//private keys r stored in this buffer

  //import the Private keys in the key container
  if(!CryptImportKey(hCryptProv,// handle to key container
                                 (BYTE*)&BLOB, //Blob which contains the private keys
                                  dwKeyBlobLen,//length of the Blob
                                 0,// unencrypted private keys
                                 0,
                                 &hKey))//pointer to handle of the imported key

.My private keys r in little endian order and the BLOBHEADER parmaters viz
bType is PRIVATEKEYBLOB bVersion is CUR_BLOB_VERSION (0x02)

I am not understanding where is the problem.Pls help me.

Pls consider my problem.Thanx in advance