#makeprivacystick on Twitter. Hopefully, that

will change.

True to form, Signal delivers something fun with

a hefty dose of encryption. From a Signal blog

post:

Sticker packs in Signal are fully encrypted.

Every sticker pack consists of a random ID

and a symmetric ‘pack key’ that encrypts the

pack name, author name, and sticker media.

This pack key is never stored on the Signal

service. Instead, users automatically exchange

pack keys with each other when they send

stickers through the encrypted Signal

Protocol messaging channel. Stickers are

transmitted as standard encrypted

attachments (with padding), and sticker

packs are never associated with the creator’s

Signal account. The result is that sticker

contents and other information are opaque to

the Signal service by default.

7REHIDLU6LJQDOLVQ¶WWKH¿UVWVHFXUHPHVVDJLQJ

platform to include stickers, not by a long shot.

7HOHJUDPQRWDEO\R̆HUVDYDULHW\RIVHUYLFHVDQG

has an extremely robust collection of stickers.

Viber was an early sticker adopter in the secure

messaging space, and Wickr did some early work

with custom emoji. WhatsApp also has numerous

stickers (among other doodads), and notably, it

secures its messages with the Signal protocol.

WHY ARE YOU TALKING ABOUT

STICKERS?

It’s about adoption. One of the most frustrating

facets of 21st-century life is trying to convince

M

a

x

E

d

d

y

@wmaxeddy