Cryptography and Computer Security
Jupyter notebooks
2021/22
Tutorial 15.10.2021 - Cryptanalysis of classical ciphers
ClassicalCiphers.ipynb: Hill and Vigenère ciphers in Python
Tutorial 29.10.2021 - LFSR
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LFSR.ipynb: LFSR in Sage
Tutorial 19.11.2021 - Attacks on RSA
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Coppersmith.ipynb: Coppersmith’s attack on a small exponent -
CommonModulus.ipynb: Common modulus attack -
RSA-ECB.ipynb: RSA in ECB mode
Tutorial 26.11.2021 - Jacobi symbols
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Jacobi.ipynb: Computing Jacobi symbols
Tutorial 3.12.2021 - Integer factorization
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Factorization.ipynb: Integer factorization
Tutorial 17.12.2021 - Discrete logarithm problem
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BabyStepGiantStep.ipynb: Shanks’s baby-step/giant-step algorithm -
PohligHellman.ipynb: The Pohlig-Hellman algorithm -
IndexCalculus.ipynb: The Index calculus algorithm
Tutorial 14.1.2022 - Elliptic curves
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EllipticCurves.ipynb: Elliptic curves