u8 DecryptedHiddenVolumeSlotsData (void)
{
if (TRUE == DecryptedHiddenVolumeSlotsActive_u8)
{
return (TRUE);
}
// Get the encrypted hidden volume slots key
ReadHiddenVolumeSlotsKey (DecryptedHiddenVolumeSlotsKey_au8);
/* Don't restart because the password access is lost */
// Check for smartcard on
if (CCID_SLOT_STATUS_PRESENT_ACTIVE != CCID_GetSlotStatus_u8 ())
{
return (FALSE); // Smartcard is off - return error
}
CI_LocalPrintf ("Decrypt hidden volume slots key\r\n");
// Decrypt the slots key of the hidden volumes
if (FALSE == DecryptKeyViaSmartcard_u32 (DecryptedHiddenVolumeSlotsKey_au8))
{
return (FALSE);
}
// Copy encrypted hidden slot data into ram
memcpy (DecryptedHiddenVolumeSlotsData_au8, (u8 *) HV_SALT_START_ADDRESS, HV_SALT_SIZE + HV_SLOT_COUNT * HV_SLOT_SIZE);
// Decrypt salt
AES_StorageKeyEncryption (HV_SALT_SIZE, DecryptedHiddenVolumeSlotsData_au8, DecryptedHiddenVolumeSlotsKey_au8, AES_PMODE_DECIPHER);
// Decrypt slot data (max 256 byte per decryption)
AES_StorageKeyEncryption (HV_SLOT_COUNT * HV_SLOT_SIZE, &DecryptedHiddenVolumeSlotsData_au8[HV_SALT_SIZE], DecryptedHiddenVolumeSlotsKey_au8,
AES_PMODE_DECIPHER);
// Key is ready
DecryptedHiddenVolumeSlotsActive_u8 = TRUE;
return (TRUE);
}
u8 PWS_DecryptedPasswordSafeKey (void)
{
if (TRUE == DecryptedPasswordSafeKey_u8)
{
return (TRUE);
}
CI_LocalPrintf ("Decrypt password safe key\r\n");
// Get the encrypted hidden volume slots key
ReadPasswordSafeKey (DecryptedPasswordSafeKey_au8);
// Decrypt the slots key of the hidden volumes
if (FALSE == DecryptKeyViaSmartcard_u32 (DecryptedPasswordSafeKey_au8))
{
return (FALSE);
}
// Key is ready
DecryptedPasswordSafeKey_u8 = TRUE;
return (TRUE);
}
