Cryptography Reference
In-Depth Information
Diagram 8.6 PGP Message Generation and Encryption Via Rings
Passphrase
P
h
✎
Alice's Private
Key Ring
✍
✌
h
(
P
)
.
E
h
(
P
)
(
d
A
)
←−−−−−−−−
ID
A
-index
←−−−−−−−−−
select
E
E
h
(
P
)
(
d
A
)
|
ID
A
|
I
e
A
.
d
A
d
A
(
d
A
(
h
(
m
))
,
m
)
=
D
A
−−−−→
d
A
(
h
(
m
))
d
A
(
h
(
m
)
,
m
)
−−−−→
m
h
(
m
)
h
D
A
Alice Creates
Message
Signature and Message
Output for Encryption
←−−−−
m
D
A
E
k
−−−−→
PGPRNG
k
e
B
E
k
(
D
A
)
(
E
k
(
D
A
)
,
e
B
(
k
))
e
B
(
k
)
−−−−→
e
B
✎
−−−−→
I
e
B
(
E
k
(
D
A
)
,
I
e
B
,
e
B
(
k
))
Alice's Public
Key Ring
✍
✌
.
Output Encrypted
Signature and Message
ID
B
-index
−−−−−−−−−→
select
e
B
|
ID
B
|
I
e
B
.
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