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Online
Cryptography
Course
Dan
Boneh
Introduc/on
Course
Overview
Dan
Boneh
Welcome
Course
objec/ves:
• Learn
how
crypto
primi/ves
work
• Learn
how
to
use
them
correctly
and
reason
about
security
My
recommenda/ons:
• Take notes
• Pause
video
frequently
to
think
about
the
material
• Answer
the
in-‐video
ques/ons
Dan
Boneh
Cryptography
is everywhere
Secure
communica,on:
– web
traffic:
HTTPS
– wireless
traffic:
802.11i
WPA2
(and
WEP),
GSM,
Bluetooth
Encryp,ng
files
on
disk:
EFS,
TrueCrypt
Content
protec,on
(e.g.
DVD,
Blu-‐ray):
CSS,
AACS
User
authen,ca,on
…
and
much
much
more
Dan
Boneh
Secure
communica/on
no
eavesdropping
no
tampering
Dan
Boneh
Secure
Sockets
Layer
/
TLS
Two
main
parts
1.
Handshake
Protocol:
Establish
shared
secret
key
using
public-‐key
cryptography
(2nd
part
of
course)
2.
Record
Layer:
Transmit
data
using
shared
secret key
Ensure
confiden/ality
and
integrity
(1st
part
of
course)
Dan
Boneh
Protected
files
on
disk
Disk
...
Cryptography
Course
Dan
Boneh
Introduc/on
Course
Overview
Dan
Boneh
Welcome
Course
objec/ves:
• Learn
how
crypto
primi/ves
work
• Learn
how
to
use
them
correctly
and
reason
about
security
My
recommenda/ons:
• Take notes
• Pause
video
frequently
to
think
about
the
material
• Answer
the
in-‐video
ques/ons
Dan
Boneh
Cryptography
is everywhere
Secure
communica,on:
– web
traffic:
HTTPS
– wireless
traffic:
802.11i
WPA2
(and
WEP),
GSM,
Bluetooth
Encryp,ng
files
on
disk:
EFS,
TrueCrypt
Content
protec,on
(e.g.
DVD,
Blu-‐ray):
CSS,
AACS
User
authen,ca,on
…
and
much
much
more
Dan
Boneh
Secure
communica/on
no
eavesdropping
no
tampering
Dan
Boneh
Secure
Sockets
Layer
/
TLS
Two
main
parts
1.
Handshake
Protocol:
Establish
shared
secret
key
using
public-‐key
cryptography
(2nd
part
of
course)
2.
Record
Layer:
Transmit
data
using
shared
secret key
Ensure
confiden/ality
and
integrity
(1st
part
of
course)
Dan
Boneh
Protected
files
on
disk
Disk
...
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