CSEC 630 – Lab Assignment
Q1. Which tool or technique from the above list would be most effective for a cryptanalyst to use to decipher a text encrypted with the Caesar cipher, and why?
Floating frequency is the most effective tool used to decipher a text encrypted with the Caesar cipher. Floating frequency replace one letter of the plaintext with another to produce the cypher text, and any particular letter in the plaintext will always, in the simplest and most easily breakable of these cyphers, turn into the same letter in the cypher. For instance, all E's will turn into X's. Floating frequency is based on the fact that certain letters, and combinations of letters, appear with characteristic frequency in essentially all texts in a
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The Caesar cipher is less secured because it is very easy to the key. For the Caesar cipher there are 26 alphabet characters meaning there are 25 possible keys and the 26 key would be in plaintext. All someone have to do to crack the code is to try all alphabet shift until the coded message is revealed (Caesar Shift Cipher, 2011).
The Vigenere cipher can be crack as well because the security of this cipher is directly related to the length and security of the keys. The code can be crack simply by guessing the key length (Vigenère Cipher, 2011).
As far as Playfair goes it is more secured because then instead of the 26 alphabet characters the Caesar cipher uses, Playfair instead uses 600 possible characters to determine the code (Playfair Cipher, 2013).
Q5. For each of the following say whether ECB or CBC would be most appropriate and give a brief explanation as to why.
a. an online bank statement
b. an encrypted VoIP session
c. viewing of a website using TCP/IP
A. CBC would be used for an online bank statement because bank statements included a lot of personal information such as account numbers, bank transactions and account balances.
B. ECB would be used for an encrypted VoIP session because VoIP protocols are connectionless. C. When viewing of a website using TCP/IP I would recommend CBC because TCP/IP delivers packets in order and TCP/IP is not connectionless which means
The protein molecules in many foods provide the amino acid building blocks required by our own cells to produce new proteins. To determine whether a sample contains protein, a reagent called Biuret solution is used. Biuret solution contains copper ions. However, the chemical state of the copper ions in Biuret solution causes them to form a chemical complex with the peptide bonds between amino acids (when present), changing the color of the solution. Biuret solution is normally blue, but changes to pink when short peptides are present and to violet when long polypeptides are present.
Caesar's personality got in his own way, and would have lead to future chaos in Rome if he had lived. He dies due to the Conspiracy’s beliefs on killing him being right, and how he ignores the warnings of his death. Would there have been more Tragedy in Rome with Caesar alive, or
3. Experiment: Use the Gizmo to find the carrying capacity with Ample, Moderate, and Little land. List the carrying capacities below.
The major difference between these two biographies is the different versions of Caesar's assassination. In Shakespeare's play Caesar's assassination is described in a total of 2 lines. ""˜ Speak, hands, for me!'/ [As Casca strikes, the others rise up and stab Caesar.]/ "˜Et tu, Brute?""Then fall, Caesar.'/ [He dies]"�(Julius Caesar 3.1.84-85).
1. State the business case for option #3, the PCB In-sourcing proposal. What is the benefit? What is the risk? How do you compare this proposal to option #1 and #2?
In this modern day and age of computing, networks are a huge part of IT. It is important now more than ever that data sent over any network, whether it be a LAN (Local Area Network) or WAN (Wide Area Network; The Internet) is kept safe, private (when required) and uninterrupted in
Explain how the ecosystem was affected by the missing species for each round of the demonstration.
Paragraph 1 - How the Law of Conservation of Matter is supported by the experimental demonstrations: In the law of conservation particles and materials are neither created nor destroyed . It was similar towards the experimental demonstrations because nothing changed or destroyed in the processes .Kinetic and potential energy was used in the experiments.
If new crust is indeed being produced at the rifts, where does the additional older crust go?
When a fellow general received the message, he would wrap the paper around his corresponding scytale to decipher the message (Tyson 2014). Since the advent of computers though, encryption has become increasing important and relies almost solely on cryptographic means to secure information. When speaking about encryption today, it refers more to the process rather than the mathematical formulas used to scramble data. The basic idea behind encrypting a computer message is such that it is scrambled with a sequence of random bits, known as a key, and only parties with the corresponding key can transpose it back into a comprehensible format. These keys are created via a cipher, otherwise known as an algorithm. When a user sends a message, known as the plaintext, across a network, the computer applies an algorithm to the information to encode it, resulting in a ciphertext (Encryption Basics 2014). This method can be best summarized visually:
Develop a hypothesis relating to the amount of dissolved oxygen measured in the water sample and the number of fish observed in the body of water.
1. (10 points) Write out your pre-lab prediction, including what evidence or previous knowledge you have to support that prediction.
Issue: Is TCP correct? Explain. [Bahr v. Technical Consumer Products, Inc, 601 Fed.Appx. 359 (6th Cir. 2015)]
Julius Caesar is the tragic hero because of his noble stature. The noble stature of Caesar is made evident through his position in society and his outstanding qualities. Caesars position in Rome was that of a dictator. At the start of the play Brutus enlightens the reader that “.... the people/ choose Caesar for their king” (1.ii.77-78). When Brutus says “king” he is actually informing the audience the Caesar has been made dictator of Rome for life. At this time in Rome, the Roman society took pride in being republic. Therefore, electing Caesar as a dictator was a monumental event. A dictator was the most powerful position in Roman society. Indeed as a stated in Encyclopedia Britannica a dictator was a “a temporary magistrate with extraordinary powers” (dictator). Furthermore, as opposed to the usual six month term Caesar was appointed a life long term (dictator). With this in mind one could say the Caesar was the most
There are weak encryption and strong encryption. Caesars method is known as weak encryption because it can be deciphered. Deciphering a code without authorization is known as “cracking” a code. In order to crack the simple substitution code, you could make twenty-five different transformation tales where each of them has a different offset. Strong encryption, the opposite of weak encryption, is very tough to crack. By using expensive, specialized, code-breaking computers, strong encryptions methods can be broken. Also, encryption methods can be broken by the use of supercomputers, mainframe computers, workstations and personal computers. The codes can be broken using these computers by using the brute-force method, which consists of trying all of the possible keys (Parsons 329).