Cryptography and Network Security Chapter 7 pptx
Cryptography and Network Security Chapter 7 pptx
... E
Km
Km
[
[
X
X
i-1
i-1
]
]
ANSI X9. 17 PRG
ANSI X9. 17 PRG
Cryptography and
Cryptography and
Network Security
Network Security
Chapter 7
Chapter 7
Fourth Edition
Fourth Edition
by William ... numbers”
create “random numbers”
although are not truly random
although are not truly random
can pass many tests of “randomness”
can pass many tests of “randomness”
...
Cryptography and Network Security Chapter 6 pptx
... noisy channels
Output FeedBack (OFB)
Output FeedBack (OFB)
Cryptography and
Cryptography and
Network Security
Network Security
Chapter 6
Chapter 6
Fourth Edition
Fourth Edition
by William ... DES
K1
K1
(i)
(i)
uses: high-speed network encryptions
uses: high-speed network encryptions
Counter (CTR)
Counter (CTR)
Advantages and Limitations of
Advantages and...
Cryptography and Network Security Chapter 10 pptx
...
248
248
97
97
= 160
= 160
(Alice)
(Alice)
K
K
AB
AB
= y
= y
A
A
x
x
B
B
mod 353 =
mod 353 =
40
40
233
233
= 160
= 160
(Bob)
(Bob)
Cryptography and
Cryptography and
Network Security
Network ... on prime
agree on prime
q=353
q=353
and
and
a
a
=3
=3
select random secret keys:
select random secret keys:
A chooses
A chooses
x
x
A
A
= 97,
= 97,
B...
Cryptography and Network Security Chapter 1 doc
... security
detection, security audit trails, security
recovery
recovery
Model for Network Security
Model for Network Security
Model for Network Security
Model for Network Security
using this ...
•
computer, network, internet security
computer, network, internet security
X.800 standard
X.800 standard
security attacks, services, mechanisms
security atta...
Cryptography and Network Security Chapter 2 pdf
... languages
English Letter Frequencies
English Letter Frequencies
Cryptography and
Cryptography and
Network Security
Network Security
Chapter 2
Chapter 2
Fourth Edition
Fourth Edition
by William ... row and in the column
letter in the same row and in the column
of the other letter of the pair
of the other letter of the pair
Security of Playfair Cipher
Security...
Cryptography and Network Security Chapter 8 doc
... 3 5 7 11 13 17 19 23 29 31 37 41 43 47 53 59
2 3 5 7 11 13 17 19 23 29 31 37 41 43 47 53 59
61 67 71 73 79 83 89 97 101 103 1 07 109 113 1 27
61 67 71 73 79 83 89 97 101 103 1 07 109 113 1 27
131 ... 83 89 97 101 103 1 07 109 113 1 27
131 1 37 139 149 151 1 57 163 1 67 173 179 181 191
131 1 37 139 149 151 1 57 163 1 67 173 179 181 191
193 1 97 199
193 1...
Cryptography and Network Security Chapter 9 doc
... 88
5?
5?
88<1 87
88<1 87
9
9
&
&
C = 88
C = 88
7
7
mod 1 87 = 11
mod 1 87 = 11
&
&
M = 11
M = 11
23
23
mod 1 87 = 88
mod 1 87 = 88
...
Exponentiation
Exponentiation
*<
*<
)4...
Cryptography and Network Security Chapter 13 pot
... Signature
Digital Signature
Algorithm
Algorithm
(DSA)
(DSA)
Cryptography and
Cryptography and
Network Security
Network Security
Chapter 13
Chapter 13
Fourth Edition
Fourth Edition
by William ... signature
with 512-1024 bit security
with 512-1024 bit security
smaller and faster than RSA
smaller and faster than RSA
a digital signature scheme only
a digit...
Network security Chapter 7 pptx
... key cryptography
7: Network Security
1
Chapter 7: Network security
Foundations:
❒ what is security?
❒ cryptography
❒ authentication
❒ message integrity
❒ key distribution and certification
Security ...
private (known only to
receiver)
7: Network Security
11
Public key cryptography
Figure 7. 7 goes here
7: Network Security
12
Public key encryption algorithms...
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