►
Description
A disseminação de aplicações de Internet das Coisas (IoT) ainda esbarra na questão da segurança da informação, especialmente no que diz respeito à identificação dos dispositivos conectados à rede.
Para resolver esse desafio, a equipe do laboratório Blockchain do CPQD desenvolveu uma solução que utiliza o conceito de identidade digital descentralizada aplicado a dispositivos IoT.
Nesse evento promovido pelo Hyperledger Brasil, os especialistas Ingrid Barbosa e Antônio Mateus do CPQD vão apresentar conceitos desse trabalho inovador.
https://www.meetup.com/Hyperledger-Sao-Paulo/events/281526602/
----
Hyperledger – Open Source Blockchain Technologies
Hyperledger is an open source community focused on developing a suite of stable frameworks, tools and libraries for enterprise-grade blockchain deployments.
It serves as a neutral home for various distributed ledger frameworks including Hyperledger Besu, Fabric, Sawtooth, Indy, as well as tools like Hyperledger Avalon, Cactus and libraries like Hyperledger Aries, Ursa. Learn more about Hyperledger projects: https://www.hyperledger.org/use
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A
A
B
A
It
Ok
cool
guys
welcome
to
another
mytapp
of
the
Brazil
chapter.
Is
it's
always
a
pleasure
to
count
on
everyone's
presence
today,
thanks
to
Dave,
we
have
Paulo
Rodrigues,
the
colleague
from
Portugal
who
is
like
Marcos
commented.
We
already
had
contact
I've
already
received
notifications
here
that
we
have
people
from
Curitiba.
There
are
people
from
Salvador
who
even
he's
going
to
be
one
of
our
speakers.
A
So
everybody,
welcome,
everyone,,
ok,
I
just
wanted
to
make
that
opening
here,
then
I'll
pass
the
floor
to
my
friend
sea
and
here
in
the
Brazil
chapter
as
well
as
I
am
in
the
entire
iPad
community,.
We
appreciate
the
por
some
rules
and
it's
one
of
the
main
ones
for
us
here.
It's
a
space
where
everyone
is
very
welcome,,
ok
and
we
work
so
that
this
space
we
pass
the
healthy
one,.
A
That
is
the
space
to
which
already
receptive
to
everyone
where
everyone
can
express
themselves
in
a
Free
way
within
the
concept
of
responsibility.
So
here's
the
message:
Ok,
I
would
like
to
say
that
this
one
is
being
broadcast,
live
on
YouTube
So.
Soon,
you
will
have
access
to
the
link
In
addition,.
All
the
events
of
the
chapter
are
registered
on
our
page.
So.
Whoever
is
interested
can
visit
our
page.
A
Very
varied
topics
from
business
data
to
technology
data,
so
here
is
the
mention
of
our
event,.
We
even
have
a
historic
event
here
that
was
KickOff
where
Brian
was
still
at
the
foundation
today
it
is
no
longer
limited
that
goes
go
down
in
history,,
so
welcome
everyone,.
Today
we
have
another
section
where
we
will
have
the
pleasure
of
talking
with
two
heads
and
Marcos
commented
impressively.
young
people
who
are
doing
a
lot
for
the
community.
So
I
will
give
the
floor
to
Marcos,
just
finishing
saying
that
we
have
there.
A
We
are
migrating
our
meetings
from
biweekly
meetings
to
monthly
meetings,
so
I
believe
that
the
next
one
should
take
place
on
the
22nd
of
November.
If
everything
goes
well
stay
tuned
to
our
communication
channels,
you
will
be
updated
about
it.
Ok,
so
everyone
is
very
welcome
in
our
work
meetings.
Also
besides
inhabiting
Marcos.
A
C
And
once
again,
thank
you.
Thank
you.
Renato
Renato,
always
supporting
me
here,
immensely
Thank.
You
all
are
here
watching.
Ok,
it's
today
we
have
people
from
different
places:
s
in
Brazil.
It's
just
a
few
details,
right
during
the
presentation
who
wants
to
leave
questions
for
the
speakers.
Almost
one
there
I
write
in
the
chat
that
I
Renato.
C
C
D
B
And
you
well
only
the
presentation
screen,
beauty,
good,
then
good
night.
Once
again,
everyone
is
before
anything
right.
I
wanted
to.
Thank
you
right,
But,
it's
for
the
invitation
right,
the
report
there
you
realize
we
like
to
always
do
our
best
to
contribute
more
and
more
to
the
community.
So
for
us
it
is
very
good
to
receive
an
invitation
like
this.
B
Mateus
is
also
a
researcher
there
at
CPqD,,
but
he
works
more
focused
on
the
development
of
solutions,,
and
today
we
are
going
to
bring
you
here
a
little
bit
of
what
we
have
been
developing
within
the
theme
of
centralized
identity
focused
on
the
internet
is,,
but
before,
right,,
just
in
case
anyone
still
doesn't
know
the
CPqD.
We
are
a
research
and
development
center
in
telecommunications
that
is
located
in
Campinas
and
so
the
bone
until
it's
his
emerged
within
this
Telecom
universe.
B
B
Our
main
objective
is
to
create
Brazilian
technology,
with
a
focus
on
technology
solutions,
ia
of
information
and
communication,
and
among
these
new
areas
that
you
are
designing,
acting,,
the
block
has
is
one
of
them
within
the
area
of
solutions,
blocks
have
to
know
that
ur
great
objective
there
is
to
act
in
the
gener
tion
of
knowledge
and
also
in
the
devel
pment
of
technologies
of
products
in
blocks
have,
and
we
have
four
major
fronts,
right
within
the
blocks
in
which
we
operate,
the
identity.
Part
is
centralized
from
the
supply
chain.
B
Smart
contracts
and
innovation
in
business
networks,
Today
here,
right
The
theme
is
identity.
Digital
from
centralized
CPqD
has
already
been
working.
With
this
theme.
It's
been
a
while
it
's
from
the
point
of
view
of
people's
identity,
right
We're
already
well
evolved.
So
is
the
next
one
I
left
having
a
product
to
make
more
available
from
the
point
of
view
of
identity
for
aeult
devices
we
started.
B
The
study
is
a
little
more
recent,,
so
we
are
still
in
a
more
experimental
stage
of
proof
of
concept,,
but
we
are
going
to
show
you
here
what
what
we
have
learned
and
what
we
have
developed
within
that
time
and
as
the
focus
here
is
to
talk
about
people's
identity
before
we
wanted
to
bring
here
just
some
reflections
on
this
topic,,
then
I
had
believe
that
everyone
here
should
be
tired
of
listening
And.
Then
the
importance
of
I
had
everything
that
is
happening
within
the
ecosystem.
B
So
it
is
on
top
of
these
words
that
we
have
been
working
and
when
we
think
about
riot
application
scenarios,
it
is
important
to
keep
in
mind
that
they
are
very
different
areas,
right.
example.
We
have
applications
that
need
high
availability.
Like
the
case
of
an
Industry
that
works
24/7
there.
We
have
applications
that
need
very
high
mobility,
like
these
tags
for
Pets
right
What
help
to
locate
if
they
run
away
or
get
lost
right.
We
have
applications
that
are
located
in
places
with
reduced
connectivity,,
as
is
the
case
on
the
part
of
Agro,.
B
We
also
have
technologies
that
are
extremely
sensitive
and
critical,,
such
as
applications
in
the
health
area
and
what
is
curious,
right,
In
each
of
these
scenarios,,
despite
everything
being
internet
of
things,
right,
It's,
the
same
big
ecosystem.
It's
in
each
of
these
scenarios,
What
is
protocols
very
different,
architectures
right
to
meet
the
need
age
of
that
scenario.
And
then
we
start
to
think
about
the
challenges,.
B
This
scenario
is
already
quite
broad
and
with
5g
it
is
predicted
that
it
will
become
even
greater,
right,.
This
IDC
statistic
is
very
famous
Maybe.
It
is
even
seen
these
numbers
around,.
It
is
predicted
that
by
2025
or
we
will
reach
something
around
56
million
connected
devices
in
the
world
and
a
large
part
of
this
expressive
number,.
It
is
believed
that
the
implementation
of
5g
is
due
to
several
scenarios
that
were
still
viable,
right?.
B
Until
recently
they
were
viable
now
with
the
five
genes,
one
they
have
become
viable
and
the
number
of
applications
is
going
to
increase
a
lot,
but
it
is
very
important
for
us
to
reflect
on
the
odd
and
in
our
life
right.
So,
for
example,
if
I
ask
you
today,
so
how
many
riot
devices
do
you
have?
Can
you
tell
me
right
away,
and
if
you
look
around
you
yes
and
count
Count,
how
many
art
devices,
if
you
have
in
your
house
in
your
office,
take
a
look
everything
around.
B
You
makes
sure
that
these
devices
are
configured
securely,
in
fact,.
Even
changing
the
question.
A
little,
right,
You
know
what
you
need
to
do
to
ensure
the
security
of
your
devices,
And
besides,
right
as
I
said
before,
or
there
I
had
a
large
ecosystem
that
is
interacting
with
each
other.
All
the
time
a
lot
of
devices
will
have
access
to
your
information,
even
if
they
are
not
yours
and
then
will
the
other
owners.
B
The
other
owners
of
the
other
devices
that
are
dealing
with
your
data
will
be
and
safe,
and
then
we
start
to
get
worried,.
It's
just
that
this
increase
in
the
ecosystem,
I
had
something
extremely
positive,
is
something
that
will
bring
many
facilities
to
our
lives.
For
society
as
a
whole
is
super
positive,
right,.
B
We
don't
have
to
fight
against
it
this,,
but
we
have
to
keep
in
mind
the
Challenges
that
we
are
going
to
have
to
overcome
in
order
to
have
the
massive
use
of
technology,,
it's
mainly
with
regard
to
cyber
security
and
just
to
illustrate,.
We
brought
here
some
examples
of
attacks
involving
me,
TIM
this
year
had
that
attack.
You
must
have
read
or
heard
something
about
that
adult
oil
from
the
United
States
that
the
government
had
to
declare
status.
Emergency,
right
It
was
something
very
serious
And.
B
Why
did
the
attack
happen,
the
engineers
on
account
of
the
academy
were
working
from
home
and
they
controlled
if
they
moved,
right
on
the
devices
that
were
there
in
the
adult
gaze
remotely
But?
This
remote
configuration
was
not
done
in
it
in
a
safe
way.
So.
The
hackers
took
advantage
of
this
to
be
able
to
invade
the
system
and
control.
The
aeult
devices
that
were
there
in
that
pipeline
is
another
attack
that
is
more
recent
still
from
August.
It
was
this
denial
of
service
that
cloudflare
suffered
right.
B
This
attack
was
huge
and
it
was
based
on
Mirai.
For
those
who
don't
know,
Mirai
is
focused
on
device
ai
me
ti
and
it
takes
advantage
of
failure
of
firm
or
problems
in
configuration
to
access
the
devices
to
transform
that
device
into
a
boat
anyway,
right
and
make
that
device
carry
out
the
attacks,
and
a
curiosity
is
that
the
second
country
that
had
the
most
Boxes
involved
in
Claire's
attack
was
the
Brazil
is
what
we
look
for
there.
B
We
will
find
a
lot
more
news
related
to
attacks
on
devices
is
the
end,
but
the
curious
thing
right,
What
we
have
noticed
from
our
studies-
is
that
most
of
these
attacks
would
have
been
avoided.
Or
at
least
difficult.
If
there
was
a
better
management
of
access
to
that
device,
And
that's
when
the
importance
of
the
identification
layer
for
the
devices
I
had
started
to
appear,.
B
But
then,
when
we
start
talking
about
identity,,
there
are
some
concepts
that
are
important
and
that
sometimes
we
are
already
confused,
right,,
because
what
is
identity,
right-
and
we
really
like
this
definition
here
of
your
vim-
that
says
that
identity,
age,,
right,
identities,
are
information
that
allow
a
specific
entity
to
be
differentiated
from
all
the
others.
In
a
given
context,
right
And,
this
identity
can
apply
to
several
different
entities
such
as
individuals,
Organizations
and
things,
right
So.
B
Things
can
also
be
identified
well
and
when
We
don't
even
think
about
identity,,
we
think
about
things
that
I
can
use
to
prove
that
I
am
myself,.
So
that's
what
identifies
each
of
us
in
practice,,
right?
What
differentiates
each
one
of
us
in
practice.
When
your
father
wants
us
likes
to
divide
into
these
three
categories,
you
are
formed
by
your
attributes,
your
relationships
and
your
agents.
Your
your
attributes
are
your
data.
B
Name
says
right:
it's
the
people
and
things
you
relate
to,
and
the
people
and
things
you
know
right.
Then
it's
you
relate
to
In
your
family.
You
have
a
relationship
with
the
government
and
your
agents
are
the
ones
who
represent
you.
So
your
lawyer,
who
represents
your
mobile
device
on
this
smartphone,
represents
you
all.
B
This
is
that
here
is
just
a
summary
right,
but
there
is
much
more
all
these
things
can
be
used
as
proof
that
you
really
are
you,,
but
when
we
take
it
to
the
digital
world,,
things
start
to
get
a
little
more
complex,
right.
This
Cartoon
here
is
very
famous,.
Maybe
you
already
have
a
visa
that
has
a
dog
there
using
the
internet
right,
And,
the
other
puppy.
Looking
at
him
and
I
say
right
about
the
internet.
Nobody
knows
you're
a
dog
That
is,
in
the
digital
world.
B
It's
a
much
greater
challenge
because
you're
not
seeing
the
person
you're
not
much
more
difficult
to
ensure
that
that
is
who
he
is
really
say
right
and
the
internet
was
not
developed
thinking
yet
and
it
didn't.
When
the
internet
was
created,
there
was
no
thought
about
identification,
so
it
was
all
a
date,
an
adaptation
that
took
place
endo
over
the
years.
The
identity
has
evolved
right
within
the
internet
First
it
was
isolated.
Each
system
had
its
own
way
of
identifying.
It
was
the
various.
B
If
light
right,
then
it
evolved
a
little
and
became
centralized
that
each
system
still
had
its
own,
but
not.
They
were
completely
isolated
there
as
before,
it
was
a
small
advance,.
Then
we
had
a
Federated
model
that
is
still
very
much
used,.
You
know,.
We
already
lost
some
of
that
centralization
there,,
so
I
don't
need
your
money
without
services,
I.
Don't
need
to
have
it
without
credentials,
right,
I
can
identify
myself
within
a
service
from
the
identity
that
I
have
in
another
service,
such
as
Google,
EA,
Facebook,,
right.
B
.
from
a
security
point
of
view,,
it
failed,
right,
it
leaked,
it's
screwed,
because
that's
where
your
credentials
of
the
systems
you
use,
there
will
be
harmed,
right
and
not
just
one
So.
It
becomes
a
little
critical
from
the
point
of
view
of
security,
right,
and
privacy
And.
Besides
that,,
it
evolved
a
little
more
and
arrived
at
this
model,
centered
on
the
user,.
This
model
is
Centralized,
right,,
because
the
user
owns
his
identity
and
he
presents
this
identity
for
the
systems
he
wants
to
use.
B
Portability
is
more
security
and
privacy,
even
in
the
way
it
is
implemented
good.
So
it
is
much
more
specific
that
it
is
user-centric
But.
They
have
the
same
base,
let's
say,
and
within
this
context
of
centralized
identity,
there
are
some
concepts
that
are
very
important
that
I'm
going
to
pass
on
here.
I,
don't
know
if
everyone
already
has
these
concepts,
but
I'll
go
through
them
quickly,
just
to
facilitate
the
understanding
of
the
solution
that
we
're
implementing,.
Ok,
so
pri
the
first
day
to
act.
It
is
an
identifier
of
Centralized,
right,.
B
Its
translation
is
a
globally
unique
value
that
is
defined
by
w3c
and
that
allows
the
management
of
the
high
Sovereign
identity
of
centralized
and
interoperable,,
and
each
of
the
Gardens,
right,
is
associated
with
one
of
Doc.
It's
a
document
refers
to
that
identifier,
and
it
has
this
format
that
appears
there
in
this
figure
at
the
bottom.
The
slide.
Verifiable
credentials
are
also
very
important,
right
because
they
really
guarantee
the
issuer's
proof
is.
Usually
this
proof
is
done
in
the
form
of
a
digital
signature.
B
Is
the
nephew,
for
example,
already
uses
the
zero
knowledge
proof
by
default,
but
not
all
infrastructures
use
it
and
she
usually
uses
a
public
key
from
the
issuer
to
verify
that
it
was
really
generated
by
who
says
right.
Really
prove
that
whoever
issued
that
one
that
credential
and
attributes
are
what
make
up
the
credentials
and
they
can
be
any
trace
of
identity
there
like
here
them
that
I
showed
you
in
that
drawing
before
is,
for
example,
your
age
is
something
you
know
like
a
secret.
B
B
B
Which
is
an
identity
of
things,
which
is
the
name
that
has
been
used
for
this
matter?
The
identity
of
things
will
be
what
differentiates
each
of
the
aeult
devices
within
the
ecosystem
and
with
all
those
news
they
showed
me
at
the
beginning.
To
realize
that
it's
extremely
important
to
know
if
that
device
I
had,,
it's
just
an
application,,
it's
talking,
for
example,.
It's
really
who
it
should
be,
right.
And,
remember
that
she
even
holds
the
puppy,
right
on
the
internet,.
No
one
knows
that
you
are
you
for
people.
It
is
already
difficult
now
for
devices.
B
Then
I
make
it
even
more
difficult
for
you,
because
imagine
I'm
accessing
positive
ones,
then
I
have
it
remotely
If.
Someone
goes
there
and
replaces
that
one
I'm
using
a
I
don't
know
I'm
reading
our
temperature.
If
someone
takes
my
sensor
temperature
and
put
another
one
that
is
sending
me,
manipulated
data,
malicious
data
without
the
identity,
the
identity
I
will
not
know
that
that
device
was
replaced,
right,.
It
is
even
more
challenging
because
of
this
issue.
B
It
is
not
a
mixture
of
a
system
that
is
at
the
same
time
it's
cyber
and
physical,
right,,
and
when
we
talk
about
attribute,
inside,
I
TIM
is
the
same,
right
for
people,.
We
had
the
CPF
there,
the
place
where
you
were
born,,
the
name
of
yours
parents
for
the
devices,,
then
I
can
use
the
Mac
address,,
the
type
of
device,,
the
organization
that
is
responsible
for
it,
and
so
on,.
In
this
little
table,
there
are
some
examples.
But.
We
can
use
many
other
attributes
to
identify
the
devices.
B
and
the
great
benefits
of
creating
an
identity
for
the
out
devices.
First,
in
relation
to
the
standardization
of
this
identity,
because
today,
in
the
ecosystem,
I
te
you
there
is
nothing
standardized
is
to
bring
more
security
and
privacy
right,
as
it
has
been
said,
which
is
one
of
the
main
motivators
right
Besides,.
It
is
some
applications
end
up
becoming
unfeasible
within
the
ecosystem.
I
have
so
it's
good.
So
if
we
bring
a
greater
guarantee
with
this
identity,
these
applications
end
up
becoming
viable.
B
So
we
have
new
types
of
business,
new
business
opportunities
that
will
arise
with
the
use
of
the
identity
of
centralized
in
the
context
of
art
and
also
integration
with
legacy
systems.
Né
É
por
t
all
the
services
that
will
be
available
at
the
agents,
it
's.
Just
that
not
everything
is
a
bed
of
roses,
right?
Yeah,
we
face
several
challenges,
Mateus
will
show
them
better
later,,
but
it's
from
a
conceptual
point
of
view,
right,.
The
first
challenge
right
away
that
we
know
that
will
watch
aeult
devices
are
limited
in
computing
power.
B
B
And
ensure
interoperability
So.
This
is
a
huge
challenge.
There
are
many
different
types
of
devices
What.
It
brings
is
a
difficulty
in
standardizing
the
attributes
butos,
because
sometimes
the
attributes
that
one
device
has,
the
other
doesn't
have,
for
example,.
Everyone
has
a
CPF,
right
then,,
but
maybe
I
did.
B
N't
have
one?
to
be
adapted
by
an
ecosystem
that
already
exists,
right,
the
ecosystem.
I
had
and
already
exists.
So.
You
will
have
to
be
adapted,
and
you
can't
stop
talking
about
the
course
too,
right,
some
devices
have
very
low
cost
and
the
course
of
identity
compared
to
courses
like
these
positive,.
It
has
to
be
worth
it,
right,
Now,
I'm,
going
to
give
the
floor
to
Mateus
because
he's
going
to
join
the
project.
E
E
Free,
no,
then
you
would
sit.
What
sense
does
the
scale
have
you
pay
something
to
get
another?
Your
system
be
more,
you
call
this,
then
it
is
a
cover,
and
if
I
am
not
mistaken,
with
this
problem
presented
by
Ingrid
and
mente,,
we
defined
the
following
guiding
question,,
which
is
how
it
proved
to
be
a
guarantee
of
integrity,
authenticity
and
an
out
network
using
the
concepts
of
decentralized
digital
identity.
E
So.
This
question
motivated
us,
and
we
also
defined
the
objectives
that
were
of
to
create
a
Primor
and
evaluate
it
and
test
environment
to
detect
flaws
and
possible
improvements
in
this
pryor
is
to
define
future
works
and
present
conclusions.
Obtained,.
Then
we
will
give
our
time
to
create
This
one
was
killed
until
The
Idiot,
who
is
a
lord
for
the
identity
of
centralized
internet
of
things.
Where
we
make
a
Chap
in
the
two
concepts
of
identity
of
centralized
applied
to
the
internet.
Is
the
game
of
an
additional
layer
of
security
in
this
environment,
so
fragile.
E
So
for
that
we
use
the
tools
that
are
under
the
rappi
hardware,
that
is
the
world.
It
has
guard
for
the
best,
for
the
centralized
identity
consists
of
India.
Is
the
Ares
EA
photo
library
Russian?
We
all
I
think
it's
there
that
you
already
know
ours
is
reading
geared
towards
identity
in
the
States.
Nothing.
The
rapper
hardware
This
is
a
set
of
tools
for
managing
identities
and
there's
one
with
these
tools.
It
's
possible
to
create
That's
what
it
is.
One
formed
that
elementary
test
important
to
point
out
that
it
is
a
purpose
So.
E
It
may
have
been
very
interesting
for
one
more
prejudice.
That
is
why
we
have
the
Idiot
architecture
accident,
where
this
architecture
has
three
main
actors
who
are
the
game
platform
is
the
Evans
agent
and
the
agonists
that
are
devices
throughout
the
world.
I
will
now
present
the
role
the
roles
played
by
each
of
these
actors.
The
first,
is
the
game.
The
game
is
a
platform,
as
is
the
platform
responsible
for
managing
the
devices.
Then
I
see
you
with
the
establishment
of
connections
issuance
of
credentials.
Go
through
us.
It's
time,
I'll
introduce
you
later
loved
it.
E
You
just
don't
have
one
we
already
erv
as
obviously,
then
we
install
people
in
it.
Finally,
the
information
coming
from
the
sports
are
presented
through
graphs,
tables
and
any
other
form
of
representation
in
the
game
itself.
Then
we
have
the
agents.
Then
these
agents
are
utility
software
executed
through
the
command
able
there
or
the
series
auditions
a
yg
this
every
people,
you
have
already
trolled
a
wallet
in
this
case
it
can
be
an
Indy
type
or
another
type
of
wallet
that
the
software
supports.
E
One
from
within
that
wallet
will
be
stored,
is
connections
and
credentials
issued
In
addition,
we
also
have
once
established
the
connection
between
agents.
They
can
communicate
with
other
agents
through
messages
like
you
of
those
Ready
now
protocol
and
manufactured
by
Ingrid.
The
integrity
of
these
messages
is
ensured
by
the
best
known,
asymmetric,
cryptography,
Also,
with
public
and
private
key.
We
can
also
be
reinforced
by
the
transport
protocol
O.
What
does
it
mean
by
itself
today?
It's
good
to
provide
security
and
integrity,
integrity
and
authenticity
of
the
transmitted
data
But.
E
You
can
also
ensure
even
more
increase,
even
more
security
through
the
transport
protocol,
not
its
own
transport
when
it's
time
to
go
mother
edition
it's
in
the
application
bag.
That,
tomorrow,
only
pick
up
a
but
transport
because
we
are
encapsulating
the
message
of
the
day
with
inside
this
protocol.
So
that's
why
proof
with
transport?
Then
you
can
use
some
of
these
versions.
Https
WL
Toys
follow
smps
mpps.
E
To
send
these
messages
I
pure
to
leave
the
get
in
the
way
comes
only
the
products,
transport,
http
and
wss,
but
what
this
can
reach
TPS
da
do
SS.
Well,
the
thread
we
have.
The
protagonists,
who
are
the
possible
additives?
Are
the
focal
point
of
our
architecture,
are
responsible
for
capturing
and
transmitting
sensitive
information?
E
Each
of
them
have
each
of
them,
not
each
one
may
or
may
not
own
the
Elvis
folks
on
board
and
guarantees
the
authenticity
and
integrity
of
messages
exchanged
and
to
check
a
screen
for
blaide
the
people,
transport
mtt
to
the
campai
was
implemented.
This
very
interesting
background,
our
proposal.
What
else
could
be
running
on
top
of
http
or
yours
is
just
that
it
is
not
radar
also
before
it
uses
attention
to
the
transport
cup.
So
we
used
a
simple
lightweight
protocol
but
at
the
same
time
it
has
a
very
interesting
functionality
and
then
what
passed?
E
A
lot
of
ta
creature,
of
the
name
of
the
group
of
Idiot
and
I'm,
going
to
rush
layer
by
layer
of
this
architecture.
First
of
everything
we
have
the
lower
layer
there,
which
is
The
Voice,
read
where
we
have
our
own
mind
and
the
sensors
site
devices
where
you
can
see
in
the
lower
right
left
side.
We
have
two
two
types
of
applications
here,
you
and
me,
so
several
applications
use
a
single
device
there,
a
marked
people,
I.e.
sensor
devices
that
do
not
have
enough
computing
power
to
perform
other
operations.
E
Cryptographic
tions
inherent
health
of
how
they
can
be
allowed
to
trust
the
sportsman
who
acts
as
a
people
who
have
a
Hermes
agent
on
board,
with
this
case
already
in
the
case
of
the
right
of
your
device,,
the
right
where
they
have
the
capacity
for
me
passes
our
conscious
to
carry
out
their
enough
operations.
So,
for
example,
here
we
have
an
engine
and
a
vehicular
network,
for
example,
it
stayed
adopts
a
part,
so
second
steps.
We
have
the
ready,
almost
transport,
that
here
comes
our
problem.
E
E
Your
transport
protocol,
in
that
case
We,
create
the
imtt
people
we
can
in
the
future,
and
Fundamental
MDF
of
answer
will
be
presented
later:
Hi
Jack
in
the
Ok
layer,
the
next
ones
we
have
to
humiliate
I
read
the
corn,
making
we
have
Jô's,
which
was
the
word,
were
chosen
by
us
to
implement
I'm,
going
to
give
this
part
of
a
class
of
an
installment
but
I,
don't
know
much,
only
Rael.
If
you
want
to
comment
on
another
one,
yes,,
just
adapt,,
there's
a
side.
D
D
E
E
The
nanny
is
in
shape,
and
she
also
has
us
Hermes
on
board,
where
the
herbal
folks
will
receive
the
messages
turn
on
the
devices
feathers
these
encrypted
messages
and
where
it
will
go
encrypted
and
send
them
to
do.
John
and
a2
will
do
interpretation
and
present
by
the
end
user,
and
here
we
have
calm
down
and
persistence,
which
is
the
rage,
ferrarin
radio
indy,
where
our
layer
was
like
there.
It
can't
not
only
need
it
can't
necessarily
be
a
bootie.
You
can
make
an
investment
in
an
infrastructure
that
is
distributed
safe.
E
It
can
be
a
database,
but
we
use
it
there,
because
it's
one
of
the
most
used
tools
and
most
suitable
for
this
use
of
digital
identity,
and
here
in
the
security
layer
we
have
our
own
dicom
and
the
transport
package
to
the
Festival
using
it
is.
We
were
not
in
mdp
always
your
gratitude
for
the
plain
text,
even
but
it
has
the
version
of
it.
Mtts
can
be
extremely
ahead
of
the
prototype
men.
We
trust
the
proper
of
how
a
bankruptcy
does
not
dirty
this
inherent
layer
that
security
o
and
here
how
it
works.
E
So
the
establishment
of
these
connections
with
us
given
judice
and
what
not
flowchart
here,
where
we
have
a
me
you
and
people,
the
knee
one
is
disgusting.
Then
the
left
side,
the
one
I
took
it
off.
It
enters
the
network.
On
top
it
makes
a
station
and
Connect
with
quest
for
us,
I.e.
Look,
I
want
to
enter
the
network
to
integrate
and
I
want
to
send
data
securely.
So
on
the
day,
this
connection
request
for
the
attack
Jô,
who
accepts
it
or
not
and
sends
the
answer
around
I
took
it
once
accepted.
E
So
it's
the
agent
of
pain,
already
send
if
he
doesn't
the
credential
that
this
grade
is
linked
to
an
identified,
the
only
one
created
by
the
game
itself
So.
This
is
with
him.
I
talk
in
the
second
stage
that
a
genius,
a
genius,
looks
like
a
virtual
genius
for
this
physical
device.
So
we
have
this
credential.
With
this
a
identified
to
the
side
and
the
oauth,
we
accept,
then
no,
this
credential.
The
answer
is
the
knee
So.
From
that
moment
on,
it
is
already
able
to
send
a
message
securely
and
encrypted
for
yours.
E
We
go
to
its
twin
device
in
the
game's
Then.
It
will
send
via
Rio.
Then
two
streams
will
translate.
It
is
to
pass
this
message
to
the
game's.
Ok,
then
our
mind
Wow
Cibele,
how
it
was
made
a
test
and
with
you
that,
then
we
use
medical
materials.
We
use
the
law,
a
mqtt
protocol
about
com,
where
we
have
a
broker
that
I
tell
you
a
bud
and
public
the
mosquito
of
its
own
for
the
eclipse.
The
fourth
way
today
I
go
to
the
boxing
network
in,
in
the
case,
a
distance
da
vai
Local
network.
E
The
oaca
parent
agent
does
not
receive
parent,
4,
zombie
mode
and
respect
parent
or
S10
top
also
using
them
as
a
humidity
and
temperature
sensor.
Why
have
I
used
more
and
S10
tip
I
have
al
go
simpler,
but
they
already
prove
to
us
the
effectiveness
of
the
protocol
of
the
proposal,
and
here
an
image
of
the
output
of
this
state.
You
can
already
be
in
the
process,
maybe
next
connection.
E
This
one
gives
a
message
securely:
Dori
receives
it,
for
example,
he
has
I,
don't
know
if
you
can
see
it,
but
the
graph
has
good
pressure
and
temperature,
so
it
was
the
data
sent
by
the
sensor
through
yours.
We
are
vice,
and
this
is
a
scenario
for
us.
We
are
complete
ideal
scenario.
If
this
cart
here
would
be
a
cuter
more
public
scenario,
let's
say
where
we
are
here
with
protocol.
E
In
the
layer
of
the
connection
layer,
we
will
have
several
pockets
protocols
that
we
have,
for
example,
caravan
display
transport
protocol
over
Bluetooth
GPS,
among
others,
since
in
the
future,
we
can
also
time
for
you
to
load.
For
you
to
go
is
the
persistence
layer.
We
will
have
interoperability,
support
to
multiple
lots,
multiple
networks
of
the
team,
not
only
Indy
Oi
Jaque
also,
we
also
have
to
calm
another
million.
The
is
that
it
could
not
only
be
Dojo.
It
could
be
from
the
game.
It
could
be
your
sun.
E
A
could
be
another
application
that
you
wanted
to
develop.
That
is
mobile.
Then
it
has.
This
could
be
you
stay
more
cultures
can
be
extended
to
this,
then,
as
a
security
layer.
Also,
all
the
questions
and
points
to
be
raised,
for
example,.
We
have
management
policies,,
it
's
a
one-piece
network,,
so
fishery
creation
and
Valdir
protection
system
in
the
vault
case,
among
others,,
and
we
can
also
do
tests
with
Byzantine
nodes,.
E
Have
the
security
and
privacy
scenario,
then,
after
I
had
a
critical
month
that
we
didn't
realize
he
realized
He
is
very
critical,
so
15
urgent
will
be
more
in
mind
that
she
is
even
more
present
in
our
lives.
Every
scenario
may
need
sity
of
different
approaches
due
to
the
need
for
adversity,
time
device
with
the
pot
that
we
developed
it
was
possible
to
stay
with
that
day.
Antibiotic
can
be
a
significant
tool
in
safety.
E
I
it
was
also
verified
that
I
day
of
how
can
I
mark
intrinsic
sea-
and
I
proved
integrity
of
messages
and
authenticity.
We
can
also
say
it
was
feasible
to
create
a
twin
device
smartphones
and
they
are
created
in
the
very
bread
of
the
game.
In
addition,
we
developed
a
tremor
that,
including
and
transport
MT,
t-49
ability
to
carry
out
cool
aunt
mention
this.
Even
so.
I
trust
I
must
leave
right
to
deepen
the
study.
The
feasibility
of
using
com
over
other
protocols
and
This
is
the
end.
One
I
said
now:
go
Big
Bora
So.
E
C
C
It
is
very
common
for
people
who
pay
all
attention
to
internal
networks
to
forget
that,
suddenly,
that
their
camera
51
Linux
protected
environment,
so
it's
very
interesting,,
then
moving
on
to
the
technical
and
technical
side,
right,
I
think
that
part
was
really
cool
and
I
'd
like
to
start
a
question
regarding
performance,
ok,
I
already
knew
Jô's
platform,
ok,.
It's
a
well-known
platform
here
in
relation
to
making
someone
I
missed
the
news.
It's
there
by
CPqD
in
Brazil,
but
speaking
in
relation
to
performance.
A
performance
test
has
already
been
carried
out
using
this
finally
concept.
E
Listen
to
our
future
plans
even
for
work,
the
application
itself
can
we
intend
to
test.
It
is
like
I
said
v
you
put
in
the
Byzantines
there
I,
so
we
attacker
even
for
me
to
take
the
stress
of
this
proposal.
We
will
be
It's
very
interesting.
Even
we
go
to
work
being
doctors
to
be
evaluated,
factors
levels
all
test
survey,
performance
called
2011.
E
A
Go
I
can
ask
a
question
first
I'm,
going
to
ask
a
question
that
the
system
interests
me
a
lot,
since
I
worked
a
lot
with
it.
There
I
have
it
but
put
it
in
the
past,
and
this
deals
with
a
series
of
questions
that
I
find
Super
Interesting.
There
are
a
series
of
strategies
today
for
you
to
avoid
the
replacement
of
the
device
for
another
device.
For
example,
I've
seen
solutions
Where
there
is
a
chip
with
a
digital
key
on
the
chip
right.
A
B
This
matter
of
replacing
the
physical
device,
right?
It's,
really
still
the
best
solution.
The
best
solution
continues
to
be
things
related
to
Rider,.
Right?
You
have
a
chip
there
and
we
could
what
we
have,
of
course,
as
we
are
in
an
experimental
phase,.
We
are
not
yet
entering
this
level
of
depth,,
but
it
is
something
that
we
think,
is
that
the
day
to
day
of
that
device
could
be
safe,
right
in
the
device
itself,
in
the
hardware
of
the
device.
Itself,
right,
a
chip
too
something
In.
B
This
sense,
because
then
I
avoid
changing
the
Dead
Okay,
I
can't
do
it,
for
example,
I,
take
the
same
day
after
day
and
put
it
on
another
device
or
I
wouldn't
be
able
to
do
it.
That's
because
it
would
already
leave
the
factory,
let's
say
with
this
Dead,
but
there
are
a
lot
of
devices
and
they
don't
reach
this
level
of
complexity,.
They
don't
have
any
chip,
right
And,
then.
In
these
cases
we
still
have
thought
about
what
would
be
the
best
solutions.
B
Is
we
already
know
that
in
these
cases
we
will
need
to
use
a
way,
right,
for
example,
the
device
itself?
Will
not
have
enough
computing
power
to
store
your
credentials
inside
it,
so
we
need
to
connect
the
device
to
a
Gameplay,
and
that
way,
and
it
will
talk
for
him,
you'll,
have
his
wallet
and
his
credentials,
and
then
we
would
protect
it,.
In
that
sense
that
I
replied
to
previously,.
We
would
protect
a
way
there,,
but
still
we
know
that
there
is
someone
who
replaced
the
device
in
that
way,
right?.
B
He
can
go
to
the
gay
room
to
remove
that
device
from
Guetta
and
put
another
one,.
So
that's
what
we've
been
thinking,
about,
studying
to
try
to
find
a
way
to
guarantee
that
the
Gateway
and
the
device
that
is
connected
to
it
are
trusted
in
that
sense.
So
it
is
something
that
is
being
studied
still
working.
C
Open
it
here,
the
question
asked
here
by
Marco
Amaral
Henriques.
It
follows
more
or
less
along
this
line
in
regarding
authentication,
He
asks
more
details
about
the
question
of
what
would
be
the
authentication
of
a
device
in
that
device.
He
only
needs
to
accept
the
credentials
offered
by
the
intermediary
agent
or
if
there
are
more
Steps
there
in
this
accreditation
process,
identification.
E
We
take
our
prototype
yourself,
we
just
accepted
it,
but
school
is
a
prototype
in
the
real
world.
You
finish
it
right.
There
was
an
indication
of
validation
of
that
initial
of
the
issuer's
identity.
So
all
these
you
through
stainless
steel,
are
on
revealed.
I,
don't
understand,
you
can
validate
the
identity
that
guy.
If
he's
really
issuing
for
me,
I'm,
reliable.
B
And
also
only
remembering
that
Didi
with
him
is,
he
complements
security,
but
he
does
not
replace
the
other
forms
of
guarantee
authentication.
So,
for
example,
it
is
still
possible
to
use
digital
certificates
in
the
way
we
already
know
today,
right,
mutual
authentication
in
the
way
we
know
it
today,
And
in
addition,,
if
you
use
account
audio
There,
is
no
way
to
guarantee
this
issue
of
device.
Authentication
anymore,
the
dojo
itself
is
I,
don't
know
if
anyone
has
used
João's
there,,
but
the
game
itself
has
all
the
fields.
B
E
At
the
end
on
its
own,
it
wasn't
without
form
this
tool.
That
is
a
proof
of
credential.
You
closed
the
air
and
you
as
if
you
were
a
type,
can
demand
from
the
dojo
a
proof
of
credential.
How
do
you
really
the
game
proves
it
to
me
that
he
sends
a
the
verifiable
credential
for
him
if
it
is
basically
analogous
to
A
digital
certificate,
so
I
know
you
can
guarantee
authenticity
of
the
one
from
the
issuer
of
the
game
at
home.
C
D
C
Move
on
here
to
Paulo
Rodrigues'
next
question,
I'll,
see
if
I
can
get
there.
Correctly,
right
speaking
that
I
have
a
securitization
in
the
oracles
is
a
very
important
topic
to
guarantee
the
integrity
of
the
information
used
in
the
full
blog
if
it
is
in
the
plans
to
extend
this
photo
to
a
time
with
wearing
glasses
consensus
kisses
based
on
consensus.
The
last
mechanism
of
this
update
of
the
information
coming
It.
B
's
good
that
we
even
discuss
a
little
about
it,,
but
in
this
first
stage,
we're
not
going
to
write
experiments
right,
and
that
was
very
superficial,,
even
in
terms
of
in-depth
security,
right
now,,
as
shown
by
Mateus.
In
that
scenario,
complete
is
what
we
are
working
on
in
this
second
stage,.
Let's
say
it
like
this
second
stage,.
Our
focus
is
more
on
evaluating
how
far
we
have
dedicated
it,
right,
how
far
we
can
use
audio
and
if
it
will
work
well
in
the
Havan
store
scenario
in
infrastructure
that
Henrique
Bluetooth
So.
B
E
You
yes,,
he
can
learn.
A
set
of
devices,
show
us
that
image
that
he
has
devices
he
doesn't
have
to
take
a
shower.
He
doesn't
have
the
capacity
I,
don't
have
enough
computational
power
to
carry
out
the
tests
operations,
so
you
saw
that
it's
serious
type,
serious
message
and
etc.
I
need
that
guy.
The
address
was
to
do
this
for
him.
B
Until
then,
just
complementing
it
is
a
way,
so
he
can
store
more
of
Undead
inside
it,.
So
if
I
have
a
device
for
a
way,
then,
beauty,
one
to
one
is
more
relaxed,,
but
it
is
possible,.
We
did
tests
and
we
were
left
with
that.
I
can
have
five
devices
connected
in
the
same
way,.
Then
that
way,
and
it
gets
store
the
credentials
of
these
five
devices.
I
understand
it,.
B
So
despite
being
a
gay
person,,
because
only
we
would
be
able
to
have
several
of
AIDS
and
already
amending
in
the
next
question,
if
it
would
not
be
a
point
of
failure,
Yes
that
way
and
it
becomes
more
critical,
right.
In
fact,
this
way,
by
itself,
will
be
a
critical
point
because
it
stores
the
device
wallet,
right?
And.
If
it
has
several
devices
connected
to
it,,
it
becomes
even
more
critical,.
So
it's
within
our
security
layer
there,.
B
C
B
E
Simple
and
not
each
protocol
Simple,
then
to
pretend
test.
This
is
great
it
besides,
and
it
also
has
safe
aviation.
It
even
has
a
pls
embed
it,
which
is
the
mtts,
so
we
decided
to
adopt
it,
but
it
prevents
the
cell
phone
ok
for
the
other
protocols
Laura
where
they
lived.
So
if
you
have
to
adapt,
don't
say
it
there,
you,
you
have
to
create
a
little
bit
for
yourself
able
to
run
a
third.
Can
this
guy.
B
Hi
and
the
issue
of
communication
with
Guetta
and
with
the
devices
that
Bruno
ask.
This
is
the
way
it
is,.
It
is
already
part
of
the
ighoot
infrastructure,
right
inside
the
layers,
Lídia,.
Then
I
have
the
most
basic
layer
there
than
the
physical
layer.
Where.
The
devices
are
located,
and
above
we
have
the
network
layer,,
which
is
where
the
gametes
are
left.
So
the
ecosystems
there
already
have
rights
AND.
The
way
these
cats
communicate
with
the
devices
will
depend
on
the
application.
B
There
are
cases
that
are
physical,
right,
physical
cabling
is
in
houses
where
this
communication
is
done
remotely
and
for
each.
If
it
has
the
mechanisms
that
will
have
to
be
used
to
guarantee
security,
when
it
is
physical,,
it
is
a
little
simpler
to
guarantee
security,
right,,
but
when
it
is
remote,
There
are
all
the
mechanisms
that
have
to
be
used,,
but
this
is
already
part
of
the
consistency,.
Isn't
it?
we're
going
to
use
the
Games
that
already
exist
in
our
example,?
It's
our
way
and
it
was
Raspberry
in
the
photo
there,.
C
B
I
Ingrid
do
not
speak
for
the
project,
I
speak
for
Ingrid
I
believe
that
Rider
will
always
bring
a
level
of
greater
security
in
this
sense,
right?
Although
Ryder
is
also
vulnerable,.
Right?
He
also
has
additional
skills,,
but
it's
less
complex
to
guarantee
this
trust.
When
we
talk
about
anger,,
so
that's
what
I've
also
seen
in
this
issue.
Until.
We
talked
before
from
the
point
that
I
think
it
was
Renato
who
raised
about
Chips,.
E
D
E
C
B
B
Issue
of
centralizing
several
devices
in
a
single
way
is
distributed
as
much
as
possible,.
It's
only
in
scenarios
with
these
physical
limitations,,
right?,
For
example,.
Just
cover
illustrate
a
scenario
like
this:
I
have
a
small
space
where
I
have
five
six
devices
and
I
only
have
one
way,
and
it
is
available
there
in
that
location.
So
I
connect
all
these
devices
like
that
and
ends
up
centralizing
in
this
way,
right,,
but
that
or
they
are
only
in
very
specific
cases.
Because.
B
The
ideal
is
actually
that
the
device
itself
is
the
owner
of
your
identity,
right
and
not
the
gays
Because.
It's
only
when
they
are
made
in
several
and
when
it
really
is
not
possible
to
distribute
more,.
We
know
that
it
is
possible,
right,.
Our
idea
was
like
this
and
if
I
need
to
put
another
device
in
the
same
way,,
then
it
works
or
not,.
Let's
test
it,,
we
test
it
and
see
that
it
works,
understand
But,
not
that
this
is
the
architecture
that
we
are
going
to
adopt,
right.
C
18:00
here
I'm
going
to
ask
one
last
question
of
mine,
going
a
little
bit
out
of
the
theme,
right?
I,
don't
know
when
we
talk
about
air,
I,
take
it
out
and
I
I
can
pass
the
distributed
form.
A
lot
of
people
talk
about
Toyota
I,
don't
know
if
you
guys
have
already
done
some
comparative
analysis
regarding
the
route,
right
Me
and
do
some
kind
of
analysis
regarding
this
one.
That
is
not
a
blog
Cheni.
It's
the
tengo
protocol
that
is
available
in
a
form
with
a.
E
But
it
's
something
very
interesting
the
same
because
don't
take
it
I've
already
studied
about
it
and
its
signature
for
free
is
a
graphic,
is
a
drag,
is
a
directed
graph.
The
goal
goes
to
them
is
very
interesting
and
light
could
even
be
an
alternative
for
storage.
In
the
case
of
pressure,
a
backup
structure,
let's
say
promised
I,
don't
know,
but
it
can
be
a
good.
D
D
Talk
talk,
talk
talk
about
the
iota.
They
say
that
this
sculpture
to
record
It
was
them
and
they
promise
it's
the
iota
people
they
promise
it
offers
greater
stability
depredations
remembered
what
is
drinkable
is
because
I
will
give
Exactly
exactly
type,
and
not
only
that
is
not
Matheus
and
try
for
several
songs
that
every
transaction
I
enter
in
their
ledger,.
They
only
have
to
approve
two
that
already
exist,
right,,
which
he
called
chips.
Wow,.
Let's.
C
D
E
E
D
C
D
D
Has
to
contribute
to
before
he
can
be
approved
of
exactly
I
forgot.
The
time
they
use
Like
I
was
even
a
discipline
of
a
result.
Is
the
I
played
with
little?
If
so,
but
it's
a
markov
mcdc
chain
something
at
CNC,
something
like
that
was
a
markov
chain.
Bazaar,
a
random
walk
but
I
think
it's
a
very
interesting
business
to
be
analyzed.
C
I
think
that
I
was
just
like
that,
thank
you,,
right,
and
even
first
I.
Don't
know
what
I
don't
know
if
you
're
here
to
thank
Luciano,,
especially
our
speakers
Ingrid
and
Mateus,.
Here
I
am
impressed,.
You
are
young,,
you
are
an
impressive
intelligence.
This
is
not
a
simple
project
for
you
used.
There
is
technologies
from
all
points.
The
indian
R
of
the
bear,
the
terrestrial
Berg
center
of
the
United
Kingdom.
We
know
that
each
of
these
items-
ns
there
already
has
a
complexity
in
itself.
I
invite
you.
C
B
Leave
it
once
again
and
admit
it,
so
you
can
speak.
Please,
please!
I
was
going
to
thank
you
right
for
the
invitation.
It's
like
I
said
at
the
beginning.
For
us,
it's
always
very
good.
It's
share
with
the
community
what
we
have
been
doing,
exchanging
ideas
for
sure
we
left
here
today
with
several
ideas
to
implement
right
things
to
add
to
our
drawing
at
the
end,
and
if
you
need
us
right,
we
are
always
available.
E
A
To
everyone
who
participated-
it's
always
a
satisfaction
being
here.
It's
always
a
satisfaction
shared
the
stage
with
people
from
the
most
varied
types
of
thinking
and
history.
Right,
Marcos
and
I
are
more
rotated.
We
have
a
history
of
suddenly
two
young
people
come
and
teach
us
a
class,.
That's
good,
right,
Marcos
I'm,
always
satisfied
person,.
Thank
you.
Once
again,
I
hope
to
see
you
in
the
next
opportunity
and
always
a
satisfaction
will
count
with
the
presence
of
all
good.
Thank
you.