PNG SVG MORE
Mixed
Glyph
Octicons
Lock
Black
384x512
Entypo
398x512
PNG ICO ICNS SVG MORE
WPZOOM Developer Icon Set
secure, Lock, Closed
512x512
open, Lock
Outline
Linecons Free – Vector Icons Pack
password, Lock, security
Lock, secure, password
Smooth
Tango Icon Library
Lock, screen, system
Pittogrammi
locked, Lock
Unlock, Lock
PNG ICO ICNS MORE
3D
Iconza
32x32
Lock, Unlock
Flat UI Icons Free
Unlock, password, secure