https://github.com/alisianoi/lyra2-compare

Compare original Lyra2 in C with its Java Lyra2 port
https://github.com/alisianoi/lyra2-compare

Last synced: 25 days ago
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Compare original Lyra2 in C with its Java Lyra2 port

• Host: GitHub
• URL: https://github.com/alisianoi/lyra2-compare
• Owner: alisianoi
• License: mit
• Created: 2017-08-18T20:02:00.000Z (about 7 years ago)
• Default Branch: main
• Last Pushed: 2022-01-21T19:20:24.000Z (almost 3 years ago)
• Last Synced: 2024-04-16T02:04:12.092Z (7 months ago)
• Language: Jupyter Notebook
• Size: 4.3 MB
• Stars: 1
• Watchers: 2
• Forks: 0
• Open Issues: 3
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# Comparison of [Lyra2][1] and [lyra2-java][2]

This repository provides a performance comparison between the original C implementation of Lyra2 and its Java port. Lyra2 is a memory-hard password hashing scheme which allows its user to configure both memory and processing time required to compute the hash. The original repository for Lyra2 can be [found here][3].

The gist of the comparison: the Java version is slower and requires more memory. This happens because the Java version has to perform extra steps to produce exactly the same results as the original C implementation. These include explicit endianness conversion and explicit modulo/remainder computations for unsigned 64 bits integers. Without these extra steps different hashes are produced for the same input parameters but significant speed-up is achieved.

 ![alt text](https://raw.githubusercontent.com/all3fox/lyra2-compare/master/src/figures/mcost_256.png )

  ![alt text](https://raw.githubusercontent.com/all3fox/lyra2-compare/master/src/figures/tcost_256.png )

[1]: https://github.com/all3fox/Lyra

[2]: https://github.com/all3fox/lyra2-java/

[3]: https://github.com/leocalm/Lyra