Sökning: "cryptanalysis"

Visar resultat 1 - 5 av 13 uppsatser innehållade ordet cryptanalysis.

  1. 1. Models, Keys, and Cryptanalysis: Evaluating historical statistical language models in cryptanalysis of homophonic substitution ciphers

    Kandidat-uppsats, Göteborgs universitet/Institutionen för filosofi, lingvistik och vetenskapsteori

    Författare :Filip Fornmark; [2023-01-19]
    Nyckelord :statistical language models; cryptanalysis; historical cryptology; homophonic substitution;

    Sammanfattning : This thesis presents an empirical study connected to historical cryptography and especially within the framework of the research project DECRYPT. One of the research questions in the DECRYPT project relates to the use of language models for automatic cryptanalysis. LÄS MER

  3. 2. A hashing algorithm based on a one-way function in the symmetric group Sn

    Master-uppsats, Linnéuniversitetet/Institutionen för matematik (MA)

    Författare :Adrian Perez Keilty; [2022]
    Nyckelord :cryptography; hashing; symmetric group; one way function;

    Sammanfattning : We have found an operation between permutations in the symmetric group Sn upon which we have experimentally derived results that can be linked to desirable properties in cryptography, mainly in the domain of one-way functions. From it, we have implemented a beta version of an algorithm for a hashing function by exploiting the operation’s low computational cost for speed and its properties for security. LÄS MER

  4. 3. Cleartext detection and language identification in ciphers

    Master-uppsats, Uppsala universitet/Institutionen för lingvistik och filologi

    Författare :Maria-Elena Gambardella; [2021]
    Nyckelord :historical cryptology; digital humanities;

    Sammanfattning : In historical cryptology, cleartext represents text written in a known language ina cipher (a hand-written manuscript aiming at hiding the content of a message).Cleartext can give us an historical interpretation and contextualisation of themanuscript and could help researchers in cryptanalysis, but to these days thereis still no research on how to automatically detect cleartext and identifying itslanguage. LÄS MER

  5. 4. Parallel Aes diffusion inter block diffusion at bit level and compression

    Master-uppsats, Högskolan i Halmstad/Akademin för informationsteknologi

    Författare :Milap Shah; [2020]
    Nyckelord :cryptography; AES;

    Sammanfattning : Information is an intelligent data through which knowledgeable and usable things can be convicted or interpreted in a proper manner. With the advancement of technology, transmission of information over the network has come a trend. This information must be transmitted securely over the network. LÄS MER

  7. 5. Extracting Information from Encrypted Data using Deep Neural Networks

    Master-uppsats, Umeå universitet/Institutionen för tillämpad fysik och elektronik

    Författare :Linus Lagerhjelm; [2018]
    Nyckelord :Neuralnetworks; MachineLearning; Cryptography; DES; LSTM; CNN; Cryptanalysis;

    Sammanfattning : In this paper we explore various approaches to using deep neural networks to per- form cryptanalysis, with the ultimate goal of having a deep neural network deci- pher encrypted data. We use long short-term memory networks to try to decipher encrypted text and we use a convolutional neural network to perform classification tasks on encrypted MNIST images. LÄS MER