iker lissarrague https://lissarrague.xyz/ i'm a software engineer constantly looking for ways to make people's lives better with software. toy totp https://lissarrague.xyz/projects/toy-totp/ https://lissarrague.xyz/projects/toy-totp/ Sat, 14 Mar 2026 00:00:00 GMT security javascript cryptography aplenty https://lissarrague.xyz/projects/advent-of-code-2023/day19/ https://lissarrague.xyz/projects/advent-of-code-2023/day19/ Tue, 19 Dec 2023 00:00:00 GMT dfs intervals parsing lavaduct lagoon https://lissarrague.xyz/projects/advent-of-code-2023/day18/ https://lissarrague.xyz/projects/advent-of-code-2023/day18/ Mon, 18 Dec 2023 00:00:00 GMT shoelace formula geometry clumsy crucible https://lissarrague.xyz/projects/advent-of-code-2023/day17/ https://lissarrague.xyz/projects/advent-of-code-2023/day17/ Sun, 17 Dec 2023 00:00:00 GMT dijkstra grid the floor will be lava https://lissarrague.xyz/projects/advent-of-code-2023/day16/ https://lissarrague.xyz/projects/advent-of-code-2023/day16/ Sat, 16 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03 Dec 2018 00:00:00 GMT grid counting inventory management system https://lissarrague.xyz/projects/advent-of-code-2018/day2/ https://lissarrague.xyz/projects/advent-of-code-2018/day2/ Sun, 02 Dec 2018 00:00:00 GMT strings counting chronal calibration https://lissarrague.xyz/projects/advent-of-code-2018/day1/ https://lissarrague.xyz/projects/advent-of-code-2018/day1/ Sat, 01 Dec 2018 00:00:00 GMT sets cycle detection spinlock https://lissarrague.xyz/projects/advent-of-code-2017/day17/ https://lissarrague.xyz/projects/advent-of-code-2017/day17/ Sun, 17 Dec 2017 00:00:00 GMT linked lists simulation permutation promenade https://lissarrague.xyz/projects/advent-of-code-2017/day16/ https://lissarrague.xyz/projects/advent-of-code-2017/day16/ Sat, 16 Dec 2017 00:00:00 GMT cycle detection simulation dueling generators https://lissarrague.xyz/projects/advent-of-code-2017/day15/ https://lissarrague.xyz/projects/advent-of-code-2017/day15/ Fri, 15 Dec 2017 00:00:00 GMT simulation bit manipulation 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graph matchsticks https://lissarrague.xyz/projects/advent-of-code-2015/day8/ https://lissarrague.xyz/projects/advent-of-code-2015/day8/ Tue, 08 Dec 2015 00:00:00 GMT strings parsing state machine some assembly required https://lissarrague.xyz/projects/advent-of-code-2015/day7/ https://lissarrague.xyz/projects/advent-of-code-2015/day7/ Mon, 07 Dec 2015 00:00:00 GMT topological sort graph bitwise probably a fire hazard https://lissarrague.xyz/projects/advent-of-code-2015/day6/ https://lissarrague.xyz/projects/advent-of-code-2015/day6/ Sun, 06 Dec 2015 00:00:00 GMT grid simulation regex doesn't he have intern-elves for this? https://lissarrague.xyz/projects/advent-of-code-2015/day5/ https://lissarrague.xyz/projects/advent-of-code-2015/day5/ Sat, 05 Dec 2015 00:00:00 GMT strings sliding window the ideal stocking stuffer https://lissarrague.xyz/projects/advent-of-code-2015/day4/ https://lissarrague.xyz/projects/advent-of-code-2015/day4/ Fri, 04 Dec 2015 00:00:00 GMT hashing brute force 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