Matti Aarnio
Senior Software Engineer at Methics Oy
Finland
Summary
👤
Senior🎓
Top SchoolMatti Aarnio is a senior software engineer based in Finland with 13 years of focused experience developing products at Methics Oy. He brings deep backend expertise, demonstrated by contributing a concrete cryptographic implementation (SM3 digest) to the Bouncy Castle Java distribution and integrating it into the JCA/JCE provider with unit tests. His long career includes engineering and consultancy roles dating back to the 1980s and 1990s, giving him a strong foundation in stable, security-conscious systems. Matti combines practical product development with low-level protocol and crypto work, making him comfortable across both application and library layers. Colleagues can expect a pragmatic engineer who values correctness and interoperability in security-sensitive code.
13 years of coding experience
6 years of employment as a software developer
Turun yliopisto
Finnish, English, Swedish
Github Skills (6)
crypto10
javas10
smime10
smb10
cryptography10
java10
Programming languages (3)
Github contributions (5)
bcgit/bc-java
Mar 2019 - Mar 2019
Bouncy Castle Java Distribution (Mirror)
Role in this project:
Back-end Developer
Back-end DeveloperContributions:5 commits, 2 PRs, 5 comments in 1 day
Contributions summary:Matti primarily focused on implementing the Chinese SM3 digest algorithm, contributing a new Java class (SM3Digest.java) for its implementation. Their work involved adapting the standard digest implementation to the SM3 specification, including defining constants and boolean functions. The user also integrated the SM3 digest into the JCA/JCE provider and created unit tests to validate the implementation.
bouncy-castlejavacryptoopenpgpdtls
oh2mqk/bc-java
Mar 2019 - Apr 2022
Bouncy Castle Java Distribution (Mirror)
Contributions:5 pushes, 3 branches, 1 comment in 3 years
castlejava8javabouncybouncy-castle
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