introduction to public key cryptography
Tài liệu Public-Key Cryptography pdf
Ngày tải lên :
17/02/2014, 14:20
... Security Theory and Practice. Springer 2009
Putting Things Together
Use all of these functions to create round keys of size 4 words (11 round
keys are needed for AES-128; i.e. 44 words)
W[0] = K[0, ... string. Divide M into a sequence of blocks:
M = M
1
M
2
…M
k
,
such that |M
i
| = l (padding the last block if necessary)
There are several methods to encrypt M, which are referred to as
block-cipher ... equivalent to breaking RC4 encryption
Weak keys: a small portion of the string could
determine a large number of bits in the initial
permutation, which helps reveal the secret
encryption key
Reused...
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Tài liệu Public-Key Cryptography and Key Management doc
Ngày tải lên :
17/02/2014, 14:20
... 2009
Alice:
Sends to Bob CA
1
(K
A
u
) and CA
2
(K
u
CA1
)
Bob:
Uses CA
2
’s public key to verify CA
1
’s public key
Uses CA
1
’s public key to verify Alice’s public key
A CA network consisting ... Concepts of Public- Key Cryptography
3.2 Elementary Concepts and Theorems in Number
Theory
3.3 Diffie-Hellman Key Exchange
3.4 RSA Cryptosystem
3.5 Elliptic-Curve Cryptography
3.6 Key Distributions ... Concepts of Public- Key Cryptography
3.2 Elementary Concepts and Theorems in Number
Theory
3.3 Diffie-Hellman Key Exchange
3.4 RSA Cryptosystem
3.5 Elliptic-Curve Cryptography
3.6 Key Distributions...
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An Introduction To Cryptography
Ngày tải lên :
18/10/2013, 17:15
...
enforceable to the maximum extent permitted by applicable law.
An Introduction to Cryptography 13
The Basics of Cryptography
Conventional cryptography
In conventional cryptography, also called secret -key ... encryption is
key distribution: how do you get the key to the recipient without someone
intercepting it?
Public key cryptography
The problems of key distribution are solved by public key cryptography, ...
to protect public keys from tampering, to make sure that a public key really
belongs to the person to whom it appears to belong. This may be the most
important vulnerability of a public key...
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An Introduction to Cryptography
Ngày tải lên :
04/11/2013, 20:15
... (probably to his relief).
public key private key
plaintext ciphertext plaintext
decryptionencryption
An Introduction to Cryptography
An Introduction to Cryptography ... encryption is
key distribution: how do you get the key to the recipient without someone
intercepting it?
Public key cryptography
The problems of key distribution are solved by public key cryptography, ...
to protect public keys from tampering, to make sure that a public key really
belongs to the person to whom it appears to belong. This may be the most
important vulnerability of a public key...
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An introduction to disk drive modeling
Ngày tải lên :
12/09/2012, 14:16
... and
cylinder skewing and sector-based sparing with one spare sector per track. This needs to be accounted for
in mapping logical blocks to the physical sectors.
Adding all these factors results in the ... 97560
sector size 256 bytes 512 bytes
cylinders 1449 1962
tracks per cylinder 8 19
data sectors per track 113 72
number of zones 1 1
track skew 34 sectors 8 sectors
cylinder skew 43 sectors 18 sectors
revolution ... specifications, since the only alternative is to
determine them experimentally.
The information required to determine how much power to apply to the pivot motor and for how long on a
particular seek...
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C++ - I/O Streams as an Introduction to Objects and Classes
Ngày tải lên :
12/09/2012, 22:49
... beginning to the end (for now)
No backing up to read something again (OK to start over)
Just as done from the keyboard
Writing to a file
Sending output to a file
Done from beginning to end ... up to write something again( OK to start over)
Just as done to the screen
Slide 6- 5
Copyright © 2007 Pearson Education, Inc. Publishing as Pearson Addison-Wesley
I/O Streams
I/O refers to ... output
Input is delivered to your program via a stream object
Input can be from
The keyboard
A file
Output is delivered to the output device via a stream
object
Output can be to
The screen
A...
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Introduction to Digital Signal Processing and Filter Design
Ngày tải lên :
13/09/2012, 10:21
... using complementary metal oxide semiconductor (CMOS) transistors. They
used no resistors and inductors, and the whole circuit was fabricated by the
28
INTRODUCTION
TABLE 1.3 ADCs Currently Available
Sampling ... transistors were introduced and fil-
ters were designed without inductors to realize the transfer functions. The design
procedure was much simpler, and device technology also was improved to fabri-
cate ... vacuum tubes
and bipolar junction transistors were developed, the design procedure had to
be changed in order to integrate the models for these active devices into the
filter circuits, but the mathematical...
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Introduction to Wireless Communications
Ngày tải lên :
13/09/2012, 10:52
...
access data stored in a central database
–
Delivers broadband connectivity to schools, libraries, and
government buildings
–
Provides free Internet access to residents and attracts
visitors and ...
channels
6
Bluetooth and Ultra Wide Band
•
Radio frequency identification device (RFID) tags
–
Small chips containing radio transponders
•
Can be used to track inventory
•
Bluetooth and Ultra ... manager
–
Special software that helps identify other Bluetooth
devices
8
Bluetooth and Ultra Wide Band
(continued)
•
Bluetooth
–
Distance: up to 33 feet (10 meters)
–
Bandwidth: 1 Mbps
•
Ultra Wide...
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An Introduction to Software Engineering
Ngày tải lên :
14/09/2012, 11:26
... 2
Objectives
To introduce software engineering and to explain
its importance
To set out the answers to key questions about
software engineering
To introduce ethical and professional issues and
to explain ... developed for a particular
customer or may be developed for a general market.
Software products may be
• Generic - developed to be sold to a range of different customers
e.g. PC software such ... what the
customer wants
• Evolution - changing the software in response to
changing demands.
©Ian Sommerville 2004 Software Engineering, 7th edition. Chapter 1 Slide 1
An Introduction to Software
Engineering
©Ian...
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A simple introduction to working with LVM
Ngày tải lên :
18/09/2012, 10:12
... comes to using LVM effectively it is worth considering the filesystem that
you wish to use upon your logical volumes.
http://www.debian-administration.org/articles/410
A simple introduction to ... be a little confusing to newcomer so this guide intends
to show the basics in a simple manner.
There several pieces of terminology that you'll need to understand to make the best
use of ... (ie. 4x5Gb drives can be combined
into one 20Gb volume group, and you can then create two 10Gb logical
volumes.)
Logically these are stacked from top to bottom like this:
can create a dedicated...
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Cambridge.University.Press.An.Introduction.to.Law.and.Regulation.Text.and.Materials.Apr.2007.pdf
Ngày tải lên :
21/09/2012, 10:39
... contributes to regulatory
enforcement and compliance. As we shall see, central to the study of regulatory
enforcement is the width of discretion within regulatory systems (in the hands
of both public ... first, to consider the extent to which
the analytic map developed in the first four chapters transposes to regulation
in the supranational context, and second, to consider whether the shift to regu-
lation ... previously encountered.
Many often struggled to identify how these strands related to each other or,
indeed, to the legal tradition to which they were accustomed. In short, there
was an acute need...
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