Ciphertext - Study guides, Class notes & Summaries

Definition of encryption - "Cryptography" -involves making and using codes to keep messages private and secure for their intended recipient --Kryptos = "hidden" Cryptanalysis - -involves cracking/breaking encrypted messages back into their unencrypted origins Bit Stream cipher - -encrypts plaintext one byte at a time (8-bits) -it is very fast encryption, lower hardware complexity, but can result in duplicate keystreams to encrypt and if someone gets both messages using the same key, t...

Making and using codes to keep messages private and secure for their intended recipient - What does cryptography involve? The mathematical formula or method used to convert an unencrypted message to an encrypted message - What is an algorithm? Am encryption method that involves converting plaintext to ciphertext one bit at a time - What is a bit stream cipher? An encryption method that involves dividing the plaintext into blocks or sets of bits and then converting the plaintext to ciphert...

Which encryption standard uses the same key to encrypt and decrypt messages? -Correct Answer Symmetric Which algorithm is designated as a Type 2 product by the National Security Agency (NSA)? -Correct Answer Skipjack What is the most commonly used format for certificates? -Correct Answer X.509 v3 What is referenced to determine if a certificate has been revoked? -Correct Answer Certificate revocation list (CRL) What needs to be installed on end users' computers to allow them to tr...

What type of encryption uses different keys to encrypt and decrypt the message? +Secure +Asymmetric +Private key +Symmetric Answer - Asymmetric Asymmetric cryptography, also known as public key cryptography, uses public and private keys to encrypt and decrypt data. The most widely used asymmetric encryption algorithm is what? +Caesar Cipher +Vigenere +RSA +DES Answer - RSA The RSA encryption algorithm is one of the most widely used public key encryption algorithms that have ...

ISC2 - CC EXAM (QUESTIONS WITH 100% CORRECT ANSWERS ) Application Server A computer responsible for hosting applications to user workstations. NIST SP 800-82 Rev.2 Asymmetric Encryption An algorithm that uses one key to encrypt and a different key to decrypt the input plaintext. Checksum A digit representing the sum of the correct digits in a piece of stored or transmitted digital data, against which later comparisons can be made to detect errors in the data. Ciphertext The a...

business continuity plan (BCP) - ANSWER A _________________ gives priorities to the functions an organization needs to keep going. signaling - ANSWER SIP is a _________ protocol used to support real-time communications Disaster Recovery Plan (DRP) - ANSWER A ____________ defines how a business gets back on its feet after a major disaster like a fire or hurricane. End-User License Agreement (EULA) - ANSWER Software vendors must protect themselves from the liabilities of their own vulnera...

2.1 Suppose someone suggests the following way to confirm that the two of you are both in possession of the same secret key. You create a random bit string the length of the key, XOR it with the key, and send the result over the channel. Your partner XORs the incoming block with the key (which should be the same as your key) and sends it back. You check, and if what you receive is your original random string, you have verified that your partner has the same secret key, yet neither of y...

Application Server correct answers A computer responsible for hosting applications to user workstations. NIST SP 800-82 Rev.2 Asymmetric Encryption correct answers An algorithm that uses one key to encrypt and a different key to decrypt the input plaintext. Checksum correct answers A digit representing the sum of the correct digits in a piece of stored or transmitted digital data, against which later comparisons can be made to detect errors in the data. Ciphertext correct answers The al...

Mike Meyers Network+ N10-008 #Under Construction Exam Study Guide with Complete Solutions Latest Updated Encryption - Correct Answer Process of converting readable data into unreadable characters to prevent unauthorized access. Integrity - Correct Answer The process that guarantees that the data received is the same as originally sent. Useful for situations when someone intercepts your data on-the-fly and makes changes. Nonrepudiation - Correct Answer Means that a person can't deny he/s...

CMSC 426 MC Final Exam Questions & Answers 2024/2025 Which of the following encryption functions has perfect secrecy? a) XOR cipher b) RC4 stream cipher c) 3DES block cipher d) One-time pad - ANSWERSd) One-time pad Which of the following describes the security of Diffie Hellman Key Exchange? a) An attacker would need to factor one of Alice or Bob's public integers in order to recover one of the private integers. b) An attacker would need to solve the discrete logarithm problem t...