Assume that you are trying to control the access to a file on your web server. Which of the following methods is considered the most appreciated? a. Use Digest HTTP-authentication b. Hash the file using SHA-1 hashing algorithm c. Encrypt the file using AES encryption algorithm d. Change the permission of the file to readable only
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- a. Which of the following can be used for both encryption and digital signatures? 3DES AES RSA MD5 b. Digital Signatures provide which of the following? Confidentiality Authorization Integrity Authentication Availability c. The difference between a hash and a digital signature is: Hashes are used to verify message authenticity, digital signatures are used to verify message integrity. Hashes are used to verify message integrity and authenticity, digital signatures are used to verify message authenticity only. Hashes are used to verify the message integrity only, digital signatures are used to verify message authenticity and message integrity. There is no functional difference. d.Which asymmetric algorithm is used for establishing a shared key?A.Elliptic CurveB. PGPC. Diffie-HellmanD. RSA e.What is used to create a message digest that will be attached to data at rest or in transit? Asymmetric algorithm Symmetric algorithm Encryption Hashing Non-repudiation Authentication…Which of these can be used to improve defenses against host attacks on a password system in which the passwords are stored in plain text (note: the system must remain a user-knowledge-based authentication system)? Select one: a. Hash the passwords and store the hashes, rather than the plaintext passwords b. Store the password on a physical object instead c. Use one-time passcodes instead d. Limit the number of attempts allowedComputer Science Please do in virtual machine. attache the screenshot. 1. Use openssl commands to obtain SHA256 hash values for the following messages (Case Sensitive). Cybersecurity CyberSecurity Helloworld! Hello world! 2. Use openssl commands to obtain md5 hash value for the following messages (Case Sensitive). Cybersecurity CyberSecurity Helloworld! Hello world! 3. Show the path and file where the hash value of the user password is stored. Retrieve the line that contains the password/hash value.
- Use OpenSSL and do the following Exchange of encrypted data. a. Encrypt a file (e.g., a text file) with an algorithm and a key length of your choice. b. Exchange the file and the necessary credentials for decryption (i.e., algorithm, key) with your neighbor. c. Decrypt the secret of your neighbor.16 Which of the following is not one of the encryption functions? A. Hash Coding B. Asymmetric encryption C. Symmetric encryption D. digital envelopeWhich encryption benchmark ensures data is not modified after it’s transmitted and before it’s received? a. Confidentiality b. Integrity c. Availability d. Symmetric
- what type of log file is shown in this figure? -SYSTEM -FIREWALL -APPLICATION -WEB SERVERQ1) Which encryption method is better: stream cipher or block cipher and why?What type of authentication method is displayed in this picture? Multi-Factor Authentication Biometric Authentication Token-based authentication Single Sign-on 2.Wendy is examining the logs of a web server that was compromised by a remote attacker. She notices that right before the attack, the logs show a series of segmentation fault errors. Other logs indicate that the attacker sent very long input strings to the web server that had malicious commands at the end of the string. What type of attack most likely took place? SQL Injection Cross-site request forgery Cross-Site scripting Buffer Overflow 3.Jessica is combatting a security incident where a specific piece of malware is continually infecting systems on her network. She would like to use application control technology to block this file. What type of application control should she use? Greylisting Bluelisting Whitelisting Blacklisting
- $script = $_GET["script"];eval("/$script;");Which of the following vulnerabilities could be exploited by an attacker examining the above code block? A-) cross-site scriptingB-) Code injectionc_) File uploadD-)IDORThis question is designed to gain more experience on symmetric encryption algorithms, encryption modes. The cryptographic library implemented by OpenSSL project will be used in this question. Using OpenSSL from the command line interface Create a new text file using a notepad or any other software, The text file contains your name(first 8 chars) and the file must be exactly 8 bytes in size only and name it “txt”. Print screen of your public ip address, repeat it twice and convert it to hexadecimal format then Create another text file and name it “key.txt” contains the doubled IP address in hexadecimal format. Encrypt the file “txt” using DES, using key.txt as a key and ECB mode of operation. The ciphertext should be in a file named “your_id.enc” and print screen your steps in details. [ Prove and explain by details that the avalanche effect is exist in DES algorithm. you don’t have check the existence of avalanche effect using different plaintext only you can use different keys to…MCQ: Which of the following is an example for user to host authentication? a. Encryption keys b. Digital certificate c. Username & Password d. Hash algorithm