PNG MORE
UI
Pixel
BWPX
open, Lock
Silver
18x18
Lock
PNG ICO ICNS MORE
Gnome icons
Lock, Broken
Black
48x48
ok, Lock
Keys, Lock, password
46x48
Tango
Lock, screen, system
32x32
Glyph
Ecqlipse 2
Lock, Unlocked
128x128
Smooth
User Interface Icons
Lock, File
LightSteelBlue
80x80
Folder, Lock
SandyBrown
Gold
Lock, user
Lavender
3D
Glaze
DimGray
secure, Lock, password
Goldenrod
File, Lock
WhiteSmoke
SteelBlue
64x64
Vaga
Lock, open
BurlyWood
16x16
Lock, secure
Function icons
48, Lock
Gainsboro
Lock, Unlock, open
Fugue Icons
DarkGoldenrod
Arrow, Lock