- If Arc4Context is NULL, then ASSERT().\r
- If Key is NULL, then ASSERT().\r
- If KeySize does not in the range of [5, 256] bytes, then ASSERT().\r
+ If Arc4Context is NULL, then return FALSE.\r
+ If Key is NULL, then return FALSE.\r
+ If KeySize does not in the range of [5, 256] bytes, then return FALSE.\r