{"id":26633488,"url":"https://github.com/chains-project/ddc4j","last_synced_at":"2025-09-04T20:44:35.435Z","repository":{"id":261398956,"uuid":"884192751","full_name":"chains-project/DDC4j","owner":"chains-project","description":"diverse double compiling for Java. Bachelor thesis Elias.","archived":false,"fork":false,"pushed_at":"2025-03-21T09:21:54.000Z","size":23,"stargazers_count":0,"open_issues_count":0,"forks_count":0,"subscribers_count":6,"default_branch":"main","last_synced_at":"2025-03-21T10:38:53.561Z","etag":null,"topics":[],"latest_commit_sha":null,"homepage":"","language":"Shell","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":"mit","status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/chains-project.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":"LICENSE","code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null,"governance":null,"roadmap":null,"authors":null,"dei":null,"publiccode":null,"codemeta":null}},"created_at":"2024-11-06T10:13:00.000Z","updated_at":"2025-03-21T09:21:57.000Z","dependencies_parsed_at":"2025-01-28T13:42:30.301Z","dependency_job_id":"2ed1845c-4589-4d1d-b9ca-82a2f56efc0a","html_url":"https://github.com/chains-project/DDC4j","commit_stats":null,"previous_names":["chains-project/ddc4j"],"tags_count":0,"template":false,"template_full_name":null,"repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/chains-project%2FDDC4j","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/chains-project%2FDDC4j/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/chains-project%2FDDC4j/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/chains-project%2FDDC4j/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/chains-project","download_url":"https://codeload.github.com/chains-project/DDC4j/tar.gz/refs/heads/main","host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":245294720,"owners_count":20591909,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2022-07-04T15:15:14.044Z","host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":[],"created_at":"2025-03-24T15:15:05.717Z","updated_at":"2025-09-04T20:44:35.425Z","avatar_url":"https://github.com/chains-project.png","language":"Shell","funding_links":[],"categories":[],"sub_categories":[],"readme":"# DDC4j\n\n\nStudents: [Elias Lundell](https://eliaslundell.se), [Eskil Nyberg]() \n\nSupervisor: [Aman Sharma](https://algomaster99.github.io/),\nExaminer: [Martin Monperrus](https://www.monperrus.net/martin)\n\n---\n\nA Degree Project, First Cycle, to perform Diverse Double-Compiling (DDC) for Java. The project implemented DDC for the javac compiler and used it to verify a release of the JDK: Temurin 21.0.5-ga. Note that, since there exists no truly trusted compiler in the Java ecosystem, this verification only supports the hypothesis that Temurin's release of the JDK is not infected by a trusting trust attack - it does not prove it.\n\nThe project's corresponding thesis is available at this link: [LINK TBA].\n\n## Reproducing our work\n\nIf you are interested in reproducing our work, feel free to take a look at our implementations in Docker (for typical use-cases) or in Red Hat Enterprise Linux (RHEL) for the verification of Temurin.\n\n* [Scripts for DDC in Docker on Ubuntu / GNU Guix Bootstrapping](/ddc_ubuntu/)\n* [Scripts for DDC in RHEL](/ddc_rhel/)\n\n## Related Work\n* [Reflections on Trusting Trust](https://dl.acm.org/doi/pdf/10.1145/358198.358210?trk=public_post_comment-text)\n* [Countering trusting trust through diverse double-compiling](http://ieeexplore.ieee.org/document/1565233/)\n* [Diverse Double-Compiling to Harden Cryptocurrency Software (Master's thesis KTH 2023)](http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-323901)\n* [Improving Trust in Software through Diverse Double-Compiling and Reproducible Builds](https://www.duo.uio.no/handle/10852/65737)\n* [Reflections on Rusting Trust](https://manishearth.github.io/blog/2016/12/02/reflections-on-rusting-trust/)\n\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fchains-project%2Fddc4j","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fchains-project%2Fddc4j","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fchains-project%2Fddc4j/lists"}