fn keyToWords(key: [32]u8) [8]u32
fn keyToWords(key: [32]u8) [8]u32 { var k: [8]u32 = undefined; var i: usize = 0; while (i < 8) : (i += 1) { k[i] = mem.readInt(u32, key[i * 4 ..][0..4], .little); } return k; }