this will helpful for the network oriented guysFull description
Network Security & Cryptography
Network Security & CryptographyFull description
its cryptography and networking book by atul kahatey which is used for the engineering syllabusFull description
Networking is a process that the exchange of information and ideas among individuals or groups. We can communicate with each other in network via messaging application for example email service
Case Studies on Cryptography and SecurityFull description
Documentation on Network SecurityFull description
Link full download: http://testbankcollection.com/download/test-bank-for-cryptography-and-network-security-principles-and-practice-6th-edition-by-stallings/ cryptography and network security princ...
Network security planning and design
Wireless networks are mostly common and are the part of every organisation or an individual. In this article we look into the technology of wireless network and security features of WLANs, delinquent and attacks in IEEE 802.11 WLANs. There are variet
Official documentation from Elekta on the installation of the NSS "Network Security Solution" system.
Visit: www.geocities.com/chinna_chetan05/forfriends.html Today the illicit activities of
security breaches and eavesdroppers, the
the hackers are growing by leaps and
technological prowess has been
bounds, viz., “THE RECENT ATTACK
stupendously developed to defy against
ON THE DNS SERVERS HAS
each of the assaults. Our paper covers
CAUSED A LOT OF HULLABALOO
the ADVANCED technical combats that
ALL OVER THE WORLD”. However,
have been devised all through the way,
fortunately, the antagonists reacted
thus giving birth to the notion of
promptly and resurrected the Internet
“NETWORK -SECURITY”. Various
world from the brink of prostration.
antidotes that are in fact inextricable
Since the inception of
with security issues are – Cryptography,
conglomerating Computers with
Authentication, Integrity and Non
Networks the consequence of which
Repudiation, Key Distribution and
shrunk the communication
certiﬁcation, Access control by
world,hitherto, umpteen ilks of security
implementing Firewalls etc.
breaches took their origin. Tersely quoting some security ditherers –
To satiate the ﬂaws in the network
Eavesdropping, Hacking, Hijacking,
security more and more advanced
Mapping, Packet Sniﬀing, 1Spooﬁng,
security notions are being devised day
DoS & DDoS attacks, etc.
by day. Our paper covers a wide
Newton’s law says “Every action has got perspective of such arenas where the an equal but opposite reaction”. So is
contemporary cyber world is revolving
the case with this. Nevertheless the
Network security deals with the problems of legitimate messages being captured and replayed. Network security is the eﬀort to create a secure computing platform. The action in question can be reduced to operations of access, modiﬁcation and deletion. Many people
pay great amounts of lip service to security but do not want to be bothered with it when it gets in their way. It’s important to build systems and networks in such a way that the user is not constantly reminded of the security system. Users who ﬁnd security policies and systems to restrictive will ﬁnd ways around them. It’s important to get their
Visit: www.geocities.com/chinna_chetan05/forfriends.html There is only one key in this
private key remains private. Data
encryption. That is private key. This
encrypted with the public key can be
key is only used for both encryption
decrypted only using the private key.
and decryption. This is also called as
Data encrypted with the private key
private-key encryption. In this
can be decrypted only using the
method the sender encrypt the data
public key. In the below ﬁgure, a
through private key and receiver
sender has the receiver’s public key
decrypt that data through that key
and uses it to encrypt a message, but
only the receiver has the related private key used to decrypt the message.
Private Key method Private Key method
Asymmetric-key encryption (two keys): There are two keys in this encryption.
Public key method Hash functions:
They are: •
Two keys – a private
An improvement on the public key scheme is the addition of a one-way hash function in the process. A oneway hash function takes variable
public key and a
mathematically related, are used in public-key encryption. To contrast it with symmetric-key encryption, public-key encryption is also some times called public-key encryption. In public key can be passed openly between the parties or published in a public repository, but the related 6 Email: [email protected]
length input. In this case, a message of any length, even thousands or millions of bits and produces a ﬁxedlength output; say, 160-bits. The function ensures that, if the information is changed in any way even by just one bit an entirely diﬀerent output value is produced. As long as a secure hash function is used, there is no way to take someone’s signature from one
Visit: www.geocities.com/chinna_chetan05/forfriends.html Its goal is to prevent the detection of documents and attach it to another,
or to alter a signed message in any
Steganography uses techniques to
way. The slightest change in signed
communicate information in a way
documents will cause the digital
that is a hidden. The most common
signature veriﬁcation process to fail.
use of Steganography is hiding information image or sound within the information of another ﬁle by using a s tegokey such as password is additional information to further conceal a message. There are many reasons why Srteganography is used, and is often used in signiﬁcant ﬁelds. It can be used to communicate with complete freedom even under conditions that
Visit: www.geocities.com/chinna_chetan05/forfriends.html Although steganography is become CRYPTOGRAPHIC very popular in the near future.
TECHNOLOGIES Based on layers:
WHAT IS STEGANOGRAPHY?
The word steganography comes •
Link layer encryption
(hidden or secret) and “graphy”
Network layer encryption
(writing or drawing”) and literally
IPSEC, VPN, SKIP
Stegenography uses techniques to
from the Greek name “stegnos”
that is hidden. The most common use of
Steganography is hiding information or
conceal a message.
PGP (Pretty Good Privacy)
steganography can be used for variety of reasons, some good, some not so good. Steganography can also be used as a way to make a substitute for a one-way hash value. Further, Steganography can be used to tag notes to online images.
Cryptographic process can be implemented at various at various layers
such as password is
information of another ﬁle by using a stegokey
communicate information in a way
the link layer all the
way up to the application layer. The most popular encryption scheme is SSL and it is implemented at the transport layer. If the encryption is done at the transport layer. If the encryption is done at the transport layer, any application that is running on the top of the transport layer can be protected.