diggsweden/eudiw-wallet-issuer-poc
Oct 2025 – Oct 2025
1 Month active
Languages Used
JavaJavaScriptYAML
Technical Skills
API SecurityBackend DevelopmentConfiguration ManagementJOSEJUnitJWT
Christoffer Killander
PROFILE
Christoffer Killander
Worked on the diggsweden/eudiw-wallet-issuer-poc repository to enhance security-critical credential issuance by implementing robust JWT signature verification and PKI-based validation. Developed a CertificateValidationService that verifies JWTs’ root certificate authorities using the x5c header and PKIX validation from a PKCS#12 keystore, integrating this logic with the CredentialController. Improved the development and testing environment by refactoring tests, updating configuration management, and refining Swagger UI access and JWT claim handling to increase test coverage. Leveraged Java, Spring Boot, and JUnit to deliver features that strengthen credential integrity, reduce the risk of forgery, and streamline deployment and testing workflows for future scalability.
Overall Statistics
Feature vs Bugs
100%Features
Repository Contributions
3Total
Bugs
0
Commits
3
Features
3
Lines of code
991
Activity Months1
Your Network
12 peopleWork History
October 2025
3 Commits • 3 Features
Oct 1, 2025In October 2025, delivered security-critical credentials issuance enhancements for the diggsweden/eudiw-wallet-issuer-poc, focusing on JWT integrity, PKI-based validation, and testing/DevEx improvements. Implemented JWT signature verification for incoming credential requests with dedicated tests; introduced CertificateValidationService to verify root CA for JWTs using x5c header, PKIX validation from a PKCS#12 keystore, and integrated it with CredentialController. Refined development and testing environment: test refactors for CredentialController, environment config updates, Swagger UI access adjustments, and JWT claim handling improvements to boost test coverage. Result: stronger security posture, reliable credential issuance, and a solid foundation for PKI-backed validation that scales with deployments.
3 Commits • 3 Features
Oct 1, 2025In October 2025, delivered security-critical credentials issuance enhancements for the diggsweden/eudiw-wallet-issuer-poc, focusing on JWT integrity, PKI-based validation, and testing/DevEx improvements. Implemented JWT signature verification for incoming credential requests with dedicated tests; introduced CertificateValidationService to verify root CA for JWTs using x5c header, PKIX validation from a PKCS#12 keystore, and integrated it with CredentialController. Refined development and testing environment: test refactors for CredentialController, environment config updates, Swagger UI access adjustments, and JWT claim handling improvements to boost test coverage. Result: stronger security posture, reliable credential issuance, and a solid foundation for PKI-backed validation that scales with deployments.
October 2025
Activity
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Quality Metrics
Correctness86.6%
Maintainability83.4%
Architecture83.4%
Performance73.4%
AI Usage20.0%
Skills & Technologies
Programming Languages
JavaJavaScriptYAML
Technical Skills
API SecurityBackend DevelopmentConfiguration ManagementJOSEJUnitJWTJWT ValidationJavaPKISecuritySpring BootTesting
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