Darío Clavijo
Montevideo, Montevideo, Uruguay
Summary
🤩
Rockstar🎓
Top SchoolDarío Clavijo is a seasoned systems and security engineer with 11 years of experience designing and hardening server architectures, virtualization platforms (Xen, KVM, VMware) and storage solutions (NAS, Fibre Channel, iSCSI) from Montevideo, Uruguay. His practical expertise spans Linux/Unix operations, network protocols (SSH, FTP, HTTP, SMTP, SNMP, TCP/IP), LDAP, backups and monitoring (Nagios), combined with scripting in Python and Bash and VoIP with Asterisk. An active open-source contributor, he strengthened cryptographic tooling by improving factorization and attack algorithms in the widely used RsaCtfTool project, showing deep applied crypto and algorithmic skill beyond typical ops work. He brings a pragmatic security-first mindset informed by telecom and server infrastructure experience, and outside of work he’s a pilot, karateka and hands-on dad—traits that reflect discipline, situational awareness and steady leadership.
11 years of coding experience
Batchelor, Computer Science, Bachelor in Computer Science, Batchelor, Computer Science, Bachelor in Computer Science at Instituto Tecnologico SuperiorComputer Science, Computer Science at Universidad de la República
Russian, Japanese, Spanish, English
Github Skills (4)
number-theory10
rsa10
cryptography10
python10
Programming languages (13)
Github contributions (5)
RsaCtfTool/RsaCtfTool
Oct 2020 - Jan 2023
RSA attack tool (mainly for ctf) - retrieve private key from weak public key and/or uncipher data
Role in this project:
Back-end Developer
Back-end DeveloperContributions:13 reviews, 291 commits, 180 PRs in 2 years 3 months
Contributions summary:Darío primarily contributed to the `rsactftool` repository, which is an RSA attack tool, with the implementation of various algorithms and improvements to existing attack methods. They worked on the factorization of integers using different approaches. They added attacks that work by testing composites for special forms such as Mersenne primes, Fermat primes, and primorial primes. In addition, the user improved existing algorithms, such as the Dixon and Euler attacks.
ctfprivate-keypublic-keyrsarsa-attack
daedalus/daedalus
May 2021 - Aug 2022
Contributions:4 commits, 4 pushes, 1 branch in 1 year 3 months
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