IT - Attacking Cryptography Essay Example | Topics and Well Written Essays - 1250 words

IT - Attacking Cryptography - Essay Example Security requires constant and periodic changes to pace up and counter the threats that are ever increasing. Similarly, cryptography also goes with the same approach of upgrading new state of the art encryption algorithms one after another and from safe to the safest, so that it cannot be cracked. Lastly, the future concerns for blow fish encryption algorithm are associated with minimizing the use of S boxes along with less iterative processes along with sub key calculation on the fly. Two fish that is considered to be the next state of the art encryption algorithm after blow fish will be considered as AES final with 128 bit block size and can handle more operations. Two fish incorporates a 16 round structure with additional options for inputs and outputs, as the plain text is converted in to 32 bit words. The inputs incorporates four key words followed by sixteen rounds and each round, two words on the left are utilized as inputs to the function donated by ‘g’ (Stinson and Tavares ). ... S-boxes are dependent on large keys that are more resilient to cryptanalysis (Anderson. n.d). Moreover, permutations are key dependent with a support of diverse operations associated with mathematics that is integrated with XOR and addition (Anderson). For attacking the encrypted files, Charlie can use many attack methods for retrieving the password files stored in the database maintained by ‘keepass’. The plaintext and cipher text methods of attacks incorporates a cryptanalyst that has an access to plaintext and the conforming cipher text and pursues to find association in between the two. Whereas, a cipher text is associated with an attack in which cryptanalyst is accessible to cipher text and do not have access to conforming plaintext. Charlie can use generic ciphers such as Caesar, frequency analysis for cracking the cipher on Alice’s workstation. Moreover, Charlie can also use a plaintext and chosen cipher text attack for retrieving the passwords. This type o f attack incorporates a cryptanalyst that is capable of encrypting a plaintext of choice and examines the results of cipher text. This type of attack is most generic for asymmetric cryptography, as Charlie can gain public key via cryptanalyst. Charlie can also choose cipher text attack that incorporates a cryptanalyst selecting a cipher text that seeks for a similar plaintext. Charlie can decrypt oracle that is a machine for decrypting data without exposure of key. Moreover, Charlie can also execute the attack on public key encryption, as it initiate with a cipher text and seeks for similar matched plaintext data available publically. Charlie can also utilize adaptive attacks (Krawczyk), as these attacks incorporate a cryptanalyst that selects plaintext or cipher text

Describe what you have learned from your experience as a member of a Essay

Describe what you have learned from your experience as a member of a team whose project was not completed successfully - Essay Example Compared to my previous successes, my first project is marked with a failure that I will never forget. On March of 2004, I have been given the privilege for an internship with XYZ Company in their Analytical laboratory. During my first day of work, I am quite challenged and enthusiastic to find that I will be working with two other new interns. Also, there will be no full time analytical chemists to assist us except my supervisor. These circumstances made me realize that my duties are going to be very challenging as well as interesting. Being able to prove our commitment, dedication, and skill, our group has been offered to work on a project, which would be very tedious for us as interns due to our lack of experience. However, we consider the task as a huge opportunity to further improve our skills and further our competencies. Because the current method is time consuming, tedious and requires continuous attention due to the usage of hazardous chemicals our project is to create a short method to analyze an element in one of the raw materials by using modern instrumentation. The group merrily took the project, albeit the very tight time constraint. We only have few more weeks for final exams and we are required to invest more effort to meet the short deadline. After a short discussion with the group, everyone agreed to contribute the best of his ability to accomplish the project within the allotted time. Two weeks later, my team and I have come to realize that we will not be able to finish the project on time, since we were working two days a week. The month passed and the shortage of time coupled with our lack of experience makes it impossible for us to complete the project. Pressing further, we ask for an extension of one week because we have already gathered all the necessary data for the completion. However, to our dismay, the project has been transferred to another analytical group within the company. This has been very disappointing for me. I have learned a lot from being a member of a team whose project was unsuccessful. This experience taught me to be a good team player and to manage my time more efficiently. Being a senior in the group, I had learned to manage and deal with the team who knew that we will not be able to finish the project on time. I have been instrumental in absorbing the stress my team and I were going through because of the short deadline. From this whole experience, I had also learned to recognize my strengths and the requirements of the task before accepting it. Even though my group failed to finish the project on time, we were still recognized for our work, and I took it as a reward. Therefore, I can say that even though our project was unsuccessful, the work and the effort was still recognized. As for me, I was able to gain knowledge from it and I consider it as an essential aspect of learning process. Failures should not be taken with disappointment. Each of us are strengthened and molded by ou r failures, they enable us the areas where we should improve and humble our hearts to be receptive to important lessons in life. A famous writer Rita Mae Brown had once said "Good judgment comes from experience, and often experience comes from