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Nina [5.8K]
3 years ago
13

The success criteria are used to judge whether a project is successful. False True need it now

Computers and Technology
2 answers:
Kaylis [27]3 years ago
8 0

Answer:

true

Explanation:

scoray [572]3 years ago
7 0

Answer:

True True True True

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RSA encryption relies on
oee [108]

Answer:

the difficulty in factoring large numbers

 a public key that the server and the user’s computer know

 

the use of prime numbers

a private key that only the server knows

Explanation:

ege 2021

5 0
2 years ago
Anyone help me with number 41.
Katarina [22]
It is te = t I yhink
8 0
3 years ago
In 3–5 sentences, describe how technology helps business professionals to be more efficient.
quester [9]

Answer:

Technology helps business professionals, keep more organized, communicate better, and effectively keeps businesses secure. Technology helps keep employee information and business paper work more organized using computers and software; while making it easier to communicate with employee's using e-mail and memo's.

Explanation:

8 0
3 years ago
Read 2 more answers
2. Research, find and use a better (different from the simple Shift Cipher) encryption technique to encrypt a string of your cho
Kruka [31]

Answer:

There are two better techniques for encryption as compared to shift cipher. One is block cipher. Such techniques use one key for both encryption and decryption. For example Advanced Encryption Standard (AES). This is based on symmetric key encryption.

The other way is to use asymmetric key encryption technique which based on two keys i.e. public and private key for encryption and decryption. For example, Rivest-Shamir-Adleman (RSA).

Explanation:

What is AES?

Advanced Encryption Standard (AES) is a symmetric key block cipher  which uses 128, 192 or 256-bit keys  length to encrypt and decrypt a block of plain text or message. It is stronger and faster than Shift Cipher encryption technique. It can encrypt data blocks of 128 bit using the above mentioned bit key lengths. The greater then key length the greater the security. the number of rounds in AES is variable and depends on the length of the key. The length of these keys determines the number of rounds for example 128 bit keys has 10 rounds, 12 rounds for 192 bit keys and 14 rounds for 256 bit keys. Each rounds involves some processing. This process is explained below:

How AES works?

The data is divided into each of size 128 bits makes a matrix of 4x4 columns of 16 bytes. (bytes because AES takes 128 bit plain text block as 16 bytes)

Substitution: First the data is substituted using a fixed substitution table which is predetermined. This makes a matrix of rows and columns.

Shifting: Each rows of the matrix is shifted to the left and the dropped entries in row are inserted on the right. Shift is carried out as follows −  

Mixing columns: Use a mathematical method/equation to transform the columns where the input of the method is each column of data which is then replaced by this function into a different new matrix of data(bytes). This is basically the first round to transform plain text to cipher text. Now consider these bytes as 128 bits, the first round key is added to these resultant column bits by XOR. A separate portion of the encryption key length is used to perform the transformation on each column. The number of rounds depend on the the key length.

After the first round key comes the second round key and so on and when the last round key is added then this whole process goes back to Substitution phase, then shifting rows phase, then mixing columns and another round key is added after this. For example, if 128 bit key is used this means there will be nine such rounds.

Advantages

AES supports large key sizes which makes it more secure and stronger than shift cipher encryption techniques which can be cracked because of their small key space. If someone wants to decrypt a message and knows it's encrypted by a Shift Cipher technique then the key space of all possible keys is only the size of the alphabet. This is a very small scale.  An attack such brute force attack attempting all 26 keys or even using exhaustive technique will easily crack this. So AES having large key size is more robust against cracking. For example in AES in order to crack an encryption for 128 bit around 2128 attempts are needed. Also for a 256 bit key, 2256 different combinations attempts are needed to ensure the right one is included which makes it harder to crack and makes is more secure.

I have used an internet solver to encrypt a string and i am attaching the result of the encryption. The plain text is: Two One Nine Two

The key is Thats my Kung Fu

and the cipher text in hexadecimal after using AES is:

29 c3 50 5f 57 14 20 f6 40 22 99 b3 1a 02 d7 3a

8 0
3 years ago
Overview: For the final project in this course, you will assume the role of a training manager at a cybersecurity firm needing t
Free_Kalibri [48]

<u>Solution and Explanation:</u>

<u>INTRODUCTION </u>

A) Introduction Cybersecurity should be a priority for all businesses so that they can protect their information systems and data assets. Organizations all over the world have been experiencing cyber-attacks. Types of cybercrime include identity theft, ransomware, denial of service attacks, botnets, phishing and social engineering (Khanse, 2014).

Cybersecurity threats exist from both external sources and from within a company. Cybersecurity issues will have impacted businesses financially to the tune of $6 trillion dollars per year worldwide, which is double the amount since 2013. Cybercrime is projected to be more profitable than the global illegal drug trade (Morgan, 2017). CyberLeet Technologies can safeguard businesses against these threats by strictly adhering to the core tenets of cybersecurity which are confidentiality, availability and integrity. CyberLeet will ensure these tenets by identifying vulnerabilities in client systems, implementing data security policies and utilizing threat detection monitoring.

B) Your Role at CyberLeet The role of an information security analyst at CyberLeet Technologies is to enforce the cybersecurity tenets of confidentiality, integrity and availability. This will be accomplished by performing risk assessments of its client’s software, hardware and networks. The analyst must plan and implement security measures to protect client systems, networks and data. Finally, the role includes helping the client engage in security awareness training for its employees (New England College, 2017). The CyberLeet information security analyst will perform job functions which uphold the basic tenets of cybersecurity. The analyst will perform vulnerability assessments of the client systems to ensure the cybersecurity principle of availability. He or she will monitor the client network and systems to safeguard the cybersecurity tenet of confidentiality. Also, the analyst will safeguard the cybersecurity tenet of integrity by protecting client data through the use of data encryption. Other tasks that will be performed include malware analysis, enhancement of security standards, and investigation and documentation of any security breaches. The ultimate goal of an information security analyst at CyberLeet Technologies is to uphold the cybersecurity tenets of confidentiality, integrity and availability by protecting its client systems’ assets, networks and data from cyberattacks.

C) Purpose of This Manual The purpose of this manual is to train new CyberLeet information security analyst recruits about their job duties. These duties include understanding that their client’s organization is subject to information security issues and the fundamental core cybersecurity tenets of confidentiality, integrity and availability must be applied to develop security measures (Henderson, 2017). These threat mitigation security measures include the development of cybersecurity policies including password policies, acceptable use policies, employee training policies, and basic user polices. It is imperative that information security analysts apply the principles and practices outlined in this manual and provide high-quality services to the client. Failure to do so could result in the client experiencing cyber-attacks ranging from malware, phishing, denial of service and ransomware (Khanse, 2014).

CORE TENENTS OF CYBER SECURITY

A) Confidentiality One of the core tenets of cybersecurity is confidentiality. Confidentiality is the preservation of private and proprietary information, such as customer data or health records. Only authorized users should be able access protected information, while unauthorized users should be blocked. Information security requires control on access to protected information (Henderson, 2017). An example of enforcing confidentiality includes the restriction of access to company assets and information via the use authentication and authorization techniques.

B) Integrity The core tenet of integrity is the guarding against improper modification of data or system information. Data integrity is maintained when information remains unchanged during storage, transmission and usage (Henderson, 2017). An example of maintaining system integrity is the prevention of malware which can corrupt computer files. An example of maintain data integrity is the proper encryption of data prior to transmission between systems, to prevent unauthorized access and manipulation.

C) Availability The core tenet of availability is the accessibility of users to systems and data. Availability is maintained when all components of the information system are working properly. Problems in the information system could make it impossible to access information, thereby making the information unavailable (Henderson, 2017).

 

8 0
3 years ago
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