projectdiscovery/mapcidr
Sep 2025 – Sep 2025
1 Month active
Languages Used
Go
Technical Skills
Command-Line Interface DevelopmentCommand-Line ToolsGo ProgrammingIP Address ManipulationNetwork ProgrammingUnit Testing
jjhwan-h
PROFILE
Jjhwan-h
Over a two-month period, this developer contributed to projectdiscovery/dsl and projectdiscovery/mapcidr, focusing on security and network tooling in Go. They built an RSA encryption helper for the dsl repository, enabling secure, base64-encoded ciphertext generation using PEM-formatted public keys and PKCS#1 v1.5 padding, with integrated unit tests to ensure correctness. In mapcidr, they improved IP filtering accuracy, addressed IPv4-in-IPv6 handling, and introduced support for expanding multi-octet dash-based IP ranges, enhancing the tool’s flexibility for network engineers. Their work emphasized robust unit testing, command-line interface development, and cryptography, resulting in more reliable and maintainable codebases.
Overall Statistics
Feature vs Bugs
67%Features
Repository Contributions
3Total
Bugs
1
Commits
3
Features
2
Lines of code
222
Activity Months2
Your Network
44 peopleSame Organization
@kakao.com34
Work History
September 2025
2 Commits • 1 Features
Sep 1, 2025September 2025 monthly summary focusing on mapcidr: key correctness improvements, new range expansion feature, and strengthened test coverage that enhance reliability and business value.
2 Commits • 1 Features
Sep 1, 2025September 2025 monthly summary focusing on mapcidr: key correctness improvements, new range expansion feature, and strengthened test coverage that enhance reliability and business value.
September 2025
July 2025
1 Commits • 1 Features
Jul 1, 2025July 2025 monthly summary for projectdiscovery/dsl. Highlights: Key feature delivered: RSA Encryption DSL Helper enabling encryption via DSL with PEM-formatted public keys, PKCS#1 v1.5 padding, and returning base64-encoded ciphertext. Unit tests included (dsl_test.go). No explicit major bugs fixed this month. Overall impact: enhances security tooling and developer productivity by enabling secure, DSL-driven encryption flows and simplifying downstream data handling. Technologies demonstrated: Go, RSA cryptography, PEM parsing, PKCS#1 v1.5 padding, base64 encoding, and DSL extension.
July 2025
1 Commits • 1 Features
Jul 1, 2025July 2025 monthly summary for projectdiscovery/dsl. Highlights: Key feature delivered: RSA Encryption DSL Helper enabling encryption via DSL with PEM-formatted public keys, PKCS#1 v1.5 padding, and returning base64-encoded ciphertext. Unit tests included (dsl_test.go). No explicit major bugs fixed this month. Overall impact: enhances security tooling and developer productivity by enabling secure, DSL-driven encryption flows and simplifying downstream data handling. Technologies demonstrated: Go, RSA cryptography, PEM parsing, PKCS#1 v1.5 padding, base64 encoding, and DSL extension.
Activity
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Quality Metrics
Correctness93.4%
Maintainability93.4%
Architecture93.4%
Performance73.4%
AI Usage20.0%
Skills & Technologies
Programming Languages
Go
Technical Skills
Command-Line Interface DevelopmentCommand-Line ToolsCryptographyDSL DevelopmentGo DevelopmentGo ProgrammingIP Address ManipulationNetwork ProgrammingUnit Testing
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline
projectdiscovery/dsl
Jul 2025 – Jul 2025
1 Month active
Languages Used
Go
Technical Skills
CryptographyDSL DevelopmentGo Development