FC_Decrypt - Decrypt a block of data.
CK_RV FC_Decrypt( CK_SESSION_HANDLE hSession, CK_BYTE_PTR pEncryptedData, CK_ULONG usEncryptedDataLen, CK_BYTE_PTR pData, CK_ULONG_PTR pusDataLen );
hSessionpEncryptedDatausEncryptedDataLenpDatapusDataLenFC_Decrypt decrypts a block of data according to the attributes of the previous call to FC_DecryptInit.
A user must log into the token (to assume the NSS User role) before calling FC_Decrypt.