6 security services a security service is a collection of security mechanisms files and procedures that help protect the network
CISSP Study Notes From CISSP Prep Guide
... database the sum of subtotals is equal to the sum of all units) n External Consistency – database with the real world (i.e database total is equal to the actual inventory in the warehouse) Availability ... maintained at this layer is called packets Responsible for the physical addressing of the network via MAC addresses Ther are two sublevels to the Data-Link layer MAC and LLC The Data-Link layer ... friction ridges and other detailed characteristics that are called minutiae n Retina Scans: Scans the blood-vessel pattern of the retina on the backside of the eyeball n Iris Scans: Scan the colored...
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Cryptography and network security principles and practice, 5th edition
... Standards and Standards-Setting Organizations D.1 The Importance of Standards D.2 Internet Standards and the Internet Society D.3 National Institute of Standards and Technology Appendix E Basic ... reading of a message of file and traffic analysis or active attacks, such as modification of messages or files, and denial of service A security mechanism is any process (or a device incorporating ... exists when there is a circumstance, capability, action, or event that could breach security and cause harm That is, a threat is a possible danger that might exploit a vulnerability Attack An assault...
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Tài liệu COMPUTER AND NETWORK SECURITY IN HIGHER EDUCATION doc
... look at tools that can help automate the process of updating the machines Many free as well as commercial tools are available that can assist with this task The important thing is to make certain ... to meeting the needs of that project Applications and Central Services A common, but critical security problem today is that many applications and services still send usernames and passwords unencrypted ... alumni, and admissions The enterprise directory provides authentication services (Am I person X?) and facilitates authorization information (Am I a member of group Y that has the authority to use service...
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Tài liệu Cryptography and Network Security Principles and Practices, Fourth Edition ppt
... and Problems 64 5 Appendix A Standards and Standards-Setting Organizations 64 7 Section A. 1 The Importance of Standards 64 8 Section A. 2 Internet Standards and the Internet Society 64 9 Section A. 3 ... without any knowledge of the enciphering details fall into the area of cryptanalysis Cryptanalysis is what the layperson calls "breaking the code." The areas of cryptography and cryptanalysis together ... Comments), and Federal Information Processing Standards (FIPS), issued by the National Institute of Standards and Technology (NIST) A ppendix A discusses the standards-making process and lists the standards...
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Procedure 1610 PR.01 Systems and Network Security potx
... anti-virus and anti-spyware tools and keep them up to date Anti-virus and anti-spyware software is available at no fee to all Yale faculty, staff and students Links: ITS 10 Use secure file transfer and ... eDonkey and the like unless a particular application is specifically approved for Yale business (as identified in an official Yale software download site) or an exception is granted via the ISO; many ... technical expertise, please obtain assistance if needed The official version of this information will only be maintained in an on-line web format Any and all printed copies of this material are dated...
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Computer and Network Security: Questions Everyone Should Ask docx
... backups of all data, and daily backups of files or data that have changed • What backup media we use? Is hardware to read that media commonly available? • When did we last test our backup procedures ... patterns of attack? Are the logs available after an attack? Disaster Recovery Planning • Do we have a written disaster recovery plan? o Are copies in possession of departmental management? At their ... (Note: the university has mandated that installation of any alarm systems on campus must be coordinated with DPPS.) • How are backup tapes/discs secured in transportation and in storage • Who has access...
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Cryptography and Network Security docx
... C' = S1K(P') The same system can also be used for authentication Fundamentals of Wired and Wireless Networks, Kameswari Chebrolu and Bhaskaran Raman, 0913 May 2005 Cryptanalysis ● Cryptanalysis: attacker ... plain-text attack – Chosen plain-text attack – Chosen text attack Fundamentals of Wired and Wireless Networks, Kameswari Chebrolu and Bhaskaran Raman, 0913 May 2005 Security Guarantees ● Two ... – Codes are stronger, and also achieve data compression Fundamentals of Wired and Wireless Networks, Kameswari Chebrolu and Bhaskaran Raman, 0913 May 2005 Some Popular Systems ● Private key...
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Cryptography and Network Security Chapter 1 doc
... physical and administrative mechanisms computer use requires automated tools to protect files and other stored information use of networks and communications links requires measures to protect data ... consider aspects of information security: security attack security mechanism security service Security Attack any action that compromises the security of information owned by an organization ... range of attacks can focus of generic types of attacks passive active Passive Attacks Active Attacks Security Service enhance security of data processing systems and information transfers...
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Cryptography and Network Security Chapter 2 pdf
... Chapter – Classical Encryption Techniques Many savages at the present day regard their names as vital parts of themselves, and therefore take great pains to conceal their real names, lest these ... now have a total of 26! = x 10 26 keys with so many keys, might think is secure but would be !!!WRONG!!! problem is language characteristics Language Redundancy and Cryptanalysis human languages ... Z are e and t guess ZW is th and hence ZWP is the proceeding with trial and error finally get: it was disclosed yesterday that several informal but direct contacts have been made with political...
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Cryptography and Network Security Chapter 6 pptx
... after the error Output FeedBack (OFB) message is treated as a stream of bits output of cipher is added to message output is then feed back (hence name) feedback is independent of message ... all bits in block (64 or 128) Ci C-1 = = Pi XOR DESK1(Ci-1) IV uses: stream data encryption, authentication Cipher FeedBack (CFB) Advantages and Limitations of CFB appropriate when data arrives ... and sixty separate ciphers," said Holmes The Adventure of the Dancing Men, Sir Arthur Conan Doyle Multiple Encryption & DES clear a replacement for DES was needed theoretical attacks that...
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Cryptography and Network Security Chapter 7 pptx
... Noise best source is natural randomness in real world find a regular but random event and monitor generally need special h/w to this eg radiation counters, radio noise, audio noise, ... distribute this key often secure system failure due to a break in the key distribution scheme Key Distribution given parties A and B have various key distribution alternatives: A can select key and ... previous values Pseudorandom Number Generators (PRNGs) often use deterministic algorithmic techniques to create “random numbers” although are not truly random can pass many tests of “randomness”...
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Cryptography and Network Security Chapter 8 doc
... Prove that for n greater than 2, the equation an + bn = cn has no non-trivial solution in the integers." They agreed on a three-day period for the labor, and the Devil disappeared At the end of ... Prime Factorisation to factor a number n is to write it as a product of other numbers: n =a x b x c note that factoring a number is relatively hard compared to multiplying the factors together ... prime if have no common divisors apart from eg & 15 are relatively prime since factors of are 1,2,4,8 and of 15 are 1,3,5,15 and is the only common factor conversely can determine the greatest...
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Cryptography and Network Security Chapter 9 doc
... Chapter – Public Key Cryptography and RSA Every Egyptian received two names, which were known respectively as the true name and the good name, or the great name and the little name; and while the ... Exponentiation can use the Square and Multiply Algorithm a fast, efficient algorithm for exponentiation concept is based on repeatedly squaring base and multiplying in the ones that are ... use Inverse algorithm to compute the other RSA Security possible approaches to attacking RSA are: brute force key search (infeasible given size of numbers) mathematical attacks (based on difficulty...
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CIS 551 / TCOM 401 Computer and Network Security doc
... that the data will fit in the buffer – This leads to a vulnerability: Supply data that is too big for the buffer (thereby violating the assumptions) – Vulnerabilities can be exploited by an attack ... about tradeoffs? • What is it that you are trying to protect? – Music collection vs nuclear missile design data • How valuable is it? • In what way is it valuable? – Information may be important ... Under Threat? A Tour of the Google Blacklist Hackers Disagree On How, When To Disclose Bugs Social Networking Site Safety Questioned IE6 Was Unsafe 284 Days In 20 06 Adobe Acrobat JavaScript Execution...
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Cryptography and Network Security potx
... Attack: Fabrication CS595-Cryptography and Network Security Attacks, Services and Mechanisms ! Security " Action ! Security Attacks compromises the information security Services " Enhances the security ... but rather on the fact that we have made our position unassailable The art of War, Sun Tzu CS595-Cryptography and Network Security Information Transferring CS595-Cryptography and Network Security ... Security Attack: Interruption CS595-Cryptography and Network Security Attack: Interception CS595-Cryptography and Network Security Attack: Modification CS595-Cryptography and Network Security Attack:...
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The CERT® Guide to System and Network Security Practices pdf
... priorities, and an organization’s ability to manage and tolerate risk dictate where IT resources are expended and determine the trade-offs among security and function, operational capability, and capacity ... standards currently exist For this reason and those stated above, administrators are sorely in need of security practices that are easy to access, understand, and implement The practices in this ... Administrators choose how to protect assets, but when managers are unable to identify which assets are the most critical and the nature of the threats against them (as part of a business strategy...
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Cryptography and Network Security: Overview potx
... Aspects of information security: Security attack Security mechanism Security service Note: Threat – a potential for violation of security Attack – an assault on system security, a ... data origin authentication Access Control - prevention of the unauthorized use of a resource Data Confidentiality –protection of data from unauthorized disclosure Data Integrity - assurance that ... X.800 security architecture specifies security attacks, services, mechanisms Active attacks may modify the transmitted information Security services include authentication, access control, … Washington...
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Cryptography and Network Security Chapter 10 pptx
... the participants (and their private and public key information) based on exponentiation in a finite (Galois) field (modulo a prime or a polynomial) - easy security relies on the difficulty of computing ... a public-key distribution scheme cannot be used to exchange an arbitrary message rather it can establish a common key known only to the two participants value of key depends on the ... would fear that some devil might take advantage of his weak state to slip into his body The Golden Bough, Sir James George Frazer Key Management public-key encryption helps address key distribution...
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Cryptography and Network Security Chapter 13 pot
... Govt approved signature scheme designed by NIST & NSA in early 90's published as FIPS-1 86 in 1991 revised in 1993, 19 96 & then 2000 uses the SHA hash algorithm DSS is the standard, DSA is the algorithm ... message if authentication needed use a digital signature with a digital certificate: A- >B: M || EPRa[H(M)] || EPRas[T||IDA||PUa] with message, signature, certificate Digital Signature Standard ... Chapter 13 – Digital Signatures & Authentication Protocols To guard against the baneful influence exerted by strangers is therefore an elementary dictate of savage prudence Hence before strangers...
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