OpenLiberty/open-liberty
Jun 2025 – Feb 2026
9 Months active
Languages Used
JavapropertiesXML
Technical Skills
Configuration ManagementCryptographyJava EEOAuthOpenID ConnectSecurity
Karel-Harjono
PROFILE
Karel-harjono
Overall Statistics
Feature vs Bugs
68%Features
Repository Contributions
61Total
Bugs
8
Commits
61
Features
17
Lines of code
26,916
Activity Months9
Your Network
974 people
Work History
February 2026
2 Commits • 1 Features
Feb 1, 2026February 2026 — OpenLiberty/open-liberty: Delivered a unified User Attributes API by integrating AttributeReader into UserRegistry, deprecating legacy methods, and optimizing attribute retrieval by using a Set of attribute names to ensure uniqueness and improve performance. Work completed via commits 7ff543b38a5a2e5317f77170ecac42d9287949ea and bd2807528874ac38a8130a15cf09a2a19f71b3fc. This refactor reduces API surface, clarifies responsibility for attribute access, and lays groundwork for future enhancements and migrations.
2 Commits • 1 Features
Feb 1, 2026February 2026 — OpenLiberty/open-liberty: Delivered a unified User Attributes API by integrating AttributeReader into UserRegistry, deprecating legacy methods, and optimizing attribute retrieval by using a Set of attribute names to ensure uniqueness and improve performance. Work completed via commits 7ff543b38a5a2e5317f77170ecac42d9287949ea and bd2807528874ac38a8130a15cf09a2a19f71b3fc. This refactor reduces API surface, clarifies responsibility for attribute access, and lays groundwork for future enhancements and migrations.
February 2026
January 2026
7 Commits • 3 Features
Jan 1, 2026January 2026: Attribute-driven user lookup delivered, beta stability improvements, and codebase cleanup. Implemented a User Attribute Retrieval System with getUsersByAttribute (replacing legacy findUsersByAttribute), added comprehensive fat tests, and enhanced error handling for multiple or missing users. Fixed WIMUserRegistry to throw EntryNotFoundException when a user is not found, improving error clarity and robustness. Introduced a Beta Version Guard for AttributeReader to stabilize beta releases. Refactored SearchBridge for readability and maintainability and performed codebase cleanup including copyright year updates and version bumps. Overall impact: stronger security through attribute-based access, more reliable user management, and reduced technical debt, enabling faster future work.
January 2026
7 Commits • 3 Features
Jan 1, 2026January 2026: Attribute-driven user lookup delivered, beta stability improvements, and codebase cleanup. Implemented a User Attribute Retrieval System with getUsersByAttribute (replacing legacy findUsersByAttribute), added comprehensive fat tests, and enhanced error handling for multiple or missing users. Fixed WIMUserRegistry to throw EntryNotFoundException when a user is not found, improving error clarity and robustness. Introduced a Beta Version Guard for AttributeReader to stabilize beta releases. Refactored SearchBridge for readability and maintainability and performed codebase cleanup including copyright year updates and version bumps. Overall impact: stronger security through attribute-based access, more reliable user management, and reduced technical debt, enabling faster future work.
December 2025
3 Commits • 1 Features
Dec 1, 2025December 2025 — Performance-focused release for OpenLiberty/open-liberty. Delivered a new AttributeReader interface for enhanced user attribute management, fixed SAML authentication compatibility with Java 8 by removing outdated ECDH configurations, and updated copyright year references to 2025 across the codebase. These changes improve security, maintainability, and compatibility, delivering measurable business value and reducing risk across authentication, identity, and legal compliance.
3 Commits • 1 Features
Dec 1, 2025December 2025 — Performance-focused release for OpenLiberty/open-liberty. Delivered a new AttributeReader interface for enhanced user attribute management, fixed SAML authentication compatibility with Java 8 by removing outdated ECDH configurations, and updated copyright year references to 2025 across the codebase. These changes improve security, maintainability, and compatibility, delivering measurable business value and reducing risk across authentication, identity, and legal compliance.
December 2025
November 2025
13 Commits • 4 Features
Nov 1, 2025November 2025 OpenLiberty/open-liberty monthly summary focused on security, authentication, and stability improvements across the codebase. Key features delivered include SAML and IdP integration modernization, SSL/TLS certificate management enhancements, security library upgrades, and testing framework/security configuration cleanup. These changes enhance authentication versatility, strengthen certificate selection, reduce exposure from outdated dependencies, and improve test reliability for future releases.
November 2025
13 Commits • 4 Features
Nov 1, 2025November 2025 OpenLiberty/open-liberty monthly summary focused on security, authentication, and stability improvements across the codebase. Key features delivered include SAML and IdP integration modernization, SSL/TLS certificate management enhancements, security library upgrades, and testing framework/security configuration cleanup. These changes enhance authentication versatility, strengthen certificate selection, reduce exposure from outdated dependencies, and improve test reliability for future releases.
October 2025
12 Commits • 2 Features
Oct 1, 2025Month: 2025-10 | OpenLiberty/open-liberty Overview: Delivered cryptography enhancements and compliance-focused improvements for SAML SSO, with strong emphasis on security posture, test coverage, and maintainability. Focused on delivering business value through robust cryptographic support, regulatory compliance, and maintainable code practices that reduce risk and enable faster iteration on security features. Key features delivered: - SAML SSO Cryptography Enhancements: Implemented support for ECDSA and RSA signing, introduced SHA384/SHA512 algorithms, updated configuration to prefer SHA256, expanded ECDSA test coverage in SAML flows, and improved error handling and test metadata for cryptographic validation. Notable commits included: 8435660..., 312dac0..., e4f86f8..., 470d20a..., 6e6a8bd..., 6e6769e..., b58a42ab..., acf1fc9..., 60981bd4. - FIPS 140-3 Compliance Enforcement and Related Tests: Enforced FIPS-mode cryptographic usage by disallowing RSA-SHA1, added tests for FIPS-mode behavior, and adjusted test coverage to reflect compliance requirements. Notable commits: 1166bd9..., 8ecaa375.... - License Header Update: Updated license/copyright headers to reflect the current year and ensure licensing compliance. Commit: 511db398.... Major bugs fixed: - Fixed failing negative test case using unsuccessfulFlow method (commit acf1fc9de19db731ea276400844d8ec33a5ffb13). - Stabilized test execution around RSA-related paths by correcting test skip logic and ensuring consistent coverage (commits 6e6769e4..., 60981bd4...). - Updated license headers to ensure licensing compliance (commit 511db398...). Overall impact and accomplishments: - Strengthened security posture by extending SAML SSO cryptography with ECDSA/RSA and SHA algorithms, and ensuring FIPS 140-3 compliant usage across flows. - Improved test coverage and reliability for cryptographic pathways, reducing regression risk and enabling safer future enhancements. - Compliance and maintainability improvements reduce licensing risk and align the project with regulatory expectations. Technologies/skills demonstrated: - Public-key cryptography (ECDSA, RSA), SHA algorithms (SHA256/SHA384/SHA512), SAML SSO workflows - FIPS 140-3 compliance enforcement and related testing - Test automation, metadata-driven testing, and negative test case handling - Codebase maintenance, license header management, and test coverage optimization Business value: - Reduced security risk by aligning SAML signing with modern cryptography standards and FIPS requirements. - Lowered operational risk through improved test coverage and stable test execution, enabling faster iteration on security features. - Clear licensing compliance reduces potential legal and distribution risks for downstream users.
12 Commits • 2 Features
Oct 1, 2025Month: 2025-10 | OpenLiberty/open-liberty Overview: Delivered cryptography enhancements and compliance-focused improvements for SAML SSO, with strong emphasis on security posture, test coverage, and maintainability. Focused on delivering business value through robust cryptographic support, regulatory compliance, and maintainable code practices that reduce risk and enable faster iteration on security features. Key features delivered: - SAML SSO Cryptography Enhancements: Implemented support for ECDSA and RSA signing, introduced SHA384/SHA512 algorithms, updated configuration to prefer SHA256, expanded ECDSA test coverage in SAML flows, and improved error handling and test metadata for cryptographic validation. Notable commits included: 8435660..., 312dac0..., e4f86f8..., 470d20a..., 6e6a8bd..., 6e6769e..., b58a42ab..., acf1fc9..., 60981bd4. - FIPS 140-3 Compliance Enforcement and Related Tests: Enforced FIPS-mode cryptographic usage by disallowing RSA-SHA1, added tests for FIPS-mode behavior, and adjusted test coverage to reflect compliance requirements. Notable commits: 1166bd9..., 8ecaa375.... - License Header Update: Updated license/copyright headers to reflect the current year and ensure licensing compliance. Commit: 511db398.... Major bugs fixed: - Fixed failing negative test case using unsuccessfulFlow method (commit acf1fc9de19db731ea276400844d8ec33a5ffb13). - Stabilized test execution around RSA-related paths by correcting test skip logic and ensuring consistent coverage (commits 6e6769e4..., 60981bd4...). - Updated license headers to ensure licensing compliance (commit 511db398...). Overall impact and accomplishments: - Strengthened security posture by extending SAML SSO cryptography with ECDSA/RSA and SHA algorithms, and ensuring FIPS 140-3 compliant usage across flows. - Improved test coverage and reliability for cryptographic pathways, reducing regression risk and enabling safer future enhancements. - Compliance and maintainability improvements reduce licensing risk and align the project with regulatory expectations. Technologies/skills demonstrated: - Public-key cryptography (ECDSA, RSA), SHA algorithms (SHA256/SHA384/SHA512), SAML SSO workflows - FIPS 140-3 compliance enforcement and related testing - Test automation, metadata-driven testing, and negative test case handling - Codebase maintenance, license header management, and test coverage optimization Business value: - Reduced security risk by aligning SAML signing with modern cryptography standards and FIPS requirements. - Lowered operational risk through improved test coverage and stable test execution, enabling faster iteration on security features. - Clear licensing compliance reduces potential legal and distribution risks for downstream users.
October 2025
September 2025
4 Commits • 1 Features
Sep 1, 2025Concise monthly summary for September 2025 focusing on SAML-related work in OpenLiberty/open-liberty. Delivered compatibility improvements for OpenSAML v4, strengthened security handling, expanded test coverage for SAML scenarios, and added test scaffolding for EC Diffie-Hellman (ECDH) workflows. Emphasis on reliability, security, and maintainability to reduce risk and improve compliance.
September 2025
4 Commits • 1 Features
Sep 1, 2025Concise monthly summary for September 2025 focusing on SAML-related work in OpenLiberty/open-liberty. Delivered compatibility improvements for OpenSAML v4, strengthened security handling, expanded test coverage for SAML scenarios, and added test scaffolding for EC Diffie-Hellman (ECDH) workflows. Emphasis on reliability, security, and maintainability to reduce risk and improve compliance.
August 2025
3 Commits • 2 Features
Aug 1, 2025OpenLiberty/open-liberty — August 2025: Security hardening and FIPS readiness. Key work included hardware security provider integration into the crypto path, refactors to CryptoUtils/LTPACrypto/PasswordCipherUtil to the updated API, and removal of the obsolete random() API. Added LTPA v1 FIPS key rotation test coverage (.noFips suffix) with validations for key creation, file output, and version checks. These changes reduce cryptographic complexity, improve provider consistency, and boost production readiness through stronger test coverage and governance of crypto materials.
3 Commits • 2 Features
Aug 1, 2025OpenLiberty/open-liberty — August 2025: Security hardening and FIPS readiness. Key work included hardware security provider integration into the crypto path, refactors to CryptoUtils/LTPACrypto/PasswordCipherUtil to the updated API, and removal of the obsolete random() API. Added LTPA v1 FIPS key rotation test coverage (.noFips suffix) with validations for key creation, file output, and version checks. These changes reduce cryptographic complexity, improve provider consistency, and boost production readiness through stronger test coverage and governance of crypto materials.
August 2025
July 2025
10 Commits • 2 Features
Jul 1, 2025Month: 2025-07. Summary: Focused on strengthening Open Liberty's FIPS 140-3 compliance, secure credential handling for Oracle JDBC, and improving CI reliability in FIPS-enabled environments. Delivered two security-centric features and a set of test-gating changes to reduce flaky tests. These efforts improve security posture, regulatory alignment, and deploy confidence while delivering measurable technical and business value.
July 2025
10 Commits • 2 Features
Jul 1, 2025Month: 2025-07. Summary: Focused on strengthening Open Liberty's FIPS 140-3 compliance, secure credential handling for Oracle JDBC, and improving CI reliability in FIPS-enabled environments. Delivered two security-centric features and a set of test-gating changes to reduce flaky tests. These efforts improve security posture, regulatory alignment, and deploy confidence while delivering measurable technical and business value.
June 2025
7 Commits • 1 Features
Jun 1, 2025June 2025 - OpenLiberty/open-liberty: Strengthened security posture and preserved backward compatibility by delivering FIPS 140-3 compliant hashing upgrades and targeted compatibility fixes across the repository. Key work includes SHA-256 adoption across OAuth/OpenID endpoints, message digests, and Eclipse Persistence integration; selective SHA-1 allowances to support LocalConnector, WebSocket upgrades, and Derby monitor; and MD5 restoration for Hibernate within FIPS 140-3 contexts to preserve CDI and datastore compatibility. These changes enable compliant deployments, reduce risk in token and data integrity flows, and improve interoperability with persistence frameworks.
7 Commits • 1 Features
Jun 1, 2025June 2025 - OpenLiberty/open-liberty: Strengthened security posture and preserved backward compatibility by delivering FIPS 140-3 compliant hashing upgrades and targeted compatibility fixes across the repository. Key work includes SHA-256 adoption across OAuth/OpenID endpoints, message digests, and Eclipse Persistence integration; selective SHA-1 allowances to support LocalConnector, WebSocket upgrades, and Derby monitor; and MD5 restoration for Hibernate within FIPS 140-3 contexts to preserve CDI and datastore compatibility. These changes enable compliant deployments, reduce risk in token and data integrity flows, and improve interoperability with persistence frameworks.
June 2025
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Quality Metrics
Correctness91.0%
Maintainability86.6%
Architecture87.8%
Performance82.2%
AI Usage22.0%
Skills & Technologies
Programming Languages
JavaXMLproperties
Technical Skills
API designAPI developmentBackend DevelopmentBuild ToolsClean CodeCode RefactoringConfigurationConfiguration ManagementCryptographyDatabase IntegrationDependency ManagementFIPS ComplianceFile IntegrityIntegration TestingJDBC
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline