https://www.khanacademy.org/computing/computer-science/cryptography/modern-crypt/v/discrete-logarithm-problem 2021-07-08T12:13:20Z The discrete logarithm problem A mathematical lock using modular arithmetic Brit Cruise video https://cdn.kastatic.org/googleusercontent/EjXrn8JC4k040av9-2FVQGQCHPoiZ2gz6ONHaF5ziYWfGRR5sqIfsSLj8vveMflFa4fRYyIVOiZB0bwAXI_lXFp6 The discrete logarithm problem A mathematical lock using modular arithmetic https://cdn.kastatic.org/ka-youtube-converted/SL7J8hPKEWY.mp4/SL7J8hPKEWY.mp4 116 Illustrating congruence modulo and its properties https://www.khanacademy.org/computing/computer-science/cryptography/modarithmetic/a/what-is-modular-arithmetic 2025-07-16T20:19:55.489365237Z What is modular arithmetic? article https://www.khanacademy.org/computing/computer-science/cryptography/modarithmetic/a/congruence-modulo 2025-07-16T20:19:55.489365237Z Congruence modulo article https://www.khanacademy.org/computing/computer-science/cryptography/modarithmetic/a/equivalence-relations 2021-04-29T07:56:21Z Equivalence relations article https://www.khanacademy.org/computing/computer-science/cryptography/modarithmetic/a/the-quotient-remainder-theorem 2021-04-29T07:59:29Z The quotient remainder theorem article https://www.khanacademy.org/computing/computer-science/cryptography/modarithmetic/a/modular-addition-and-subtraction 2021-04-29T08:04:00Z Modular addition and subtraction article https://www.khanacademy.org/computing/computer-science/cryptography/modarithmetic/a/modular-multiplication 2021-04-29T07:53:26Z Modular multiplication article https://www.khanacademy.org/computing/computer-science/cryptography/modarithmetic/a/modular-exponentiation 2021-04-29T07:54:01Z Modular exponentiation article https://www.khanacademy.org/computing/computer-science/cryptography/modarithmetic/a/fast-modular-exponentiation 2025-07-16T20:19:55.489365237Z Fast modular exponentiation article https://www.khanacademy.org/computing/computer-science/cryptography/modarithmetic/e/modulo-operator 2026-04-08T00:54:09.631945657Z Modulo operator Practice using the modulo operator Cameron exercise https://www.khanacademy.org/computing/computer-science/cryptography/modarithmetic/e/congruence-relation 2021-06-05T02:01:52Z Congruence relation Cameron exercise https://www.khanacademy.org/computing/computer-science/cryptography/modarithmetic/e/modular-multiplication 2026-04-07T23:17:37.123726494Z Modular multiplication Cameron exercise