Java library that implements the JPEG Universal Metadata Box Format (JUMBF) data model.
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Apr 14, 2026 - Java
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jumbf
Here are 9 public repositories matching this topic...
Embed, extract and verify C2PA Content Credentials in plain Unicode text.
unicode text provenance ed25519 watermark cose synthetic-content jumbf c2pa content-credentials ai-act ai-transparency variation-selectors annex-a8
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Oct 15, 2026 - Python
Pure-Go (no cgo) C2PA / Content Credentials library: a fast unverified reader plus full cryptographic validation — COSE signature, certificate chain, hash bindings, RFC 3161 timestamp. Reads JPEG, PNG, WebP, GIF, TIFF/DNG, HEIC, AVIF, SVG, MP4, MOV, AVI, WAV, MP3 and PDF.
svg go golang pdf png mp4 jpeg tiff mp3 wasm gif provenance webp x509 cose jumbf c2pa content-authenticity content-credentials ai-generated-content
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Nov 5, 2026 - Go
Verifier for C2PA Content Credentials in pure PHP: JPEG, PNG, WebP and ISOBMFF, with c2patool's verdict. Read and verify only; no signing, no keys, no network.
php provenance x509 cbor ocsp digital-signatures rfc3161 isobmff cose jumbf c2pa content-authenticity content-credentials
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Nov 10, 2026 - PHP
Local, zero-dependency toolkit for AI-text and AI-image provenance: inspect hidden characters, document how you wrote something, read C2PA credentials without pretending to verify them.
python unicode accessibility provenance zero-dependency bagit digital-preservation premis academic-integrity homoglyph jumbf c2pa content-authenticity ai-detection content-credentials trojan-source
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Aug 16, 2026 - Python
Verify C2PA Content Credentials offline: drop a signed image in the browser or run it in CI and see the real signature, chain, and hard binding. No upload.
cli cryptography mcp provenance x509 bun cose jumbf c2pa content-credentials media-verification ai-transparency
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Sep 20, 2026 - TypeScript
High-assurance Python tool to purge C2PA Content Credentials manifests, JUMBF boxes, SynthID, and Generative AI metadata (ChatGPT, Midjourney, Stable Diffusion, DALL-E) across 7 image formats via sterile raster reconstruction. Preserves quality, alpha transparency, and animations.
python metadata-cleaner jumbf c2pa stable-diffusion ai-metadata chatgpt content-credentials synthid exif-stripper ai-metadata-remover c2pa-remover
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Oct 25, 2026 - Python
Out-of-bounds read in the legacy Microsoft Paint C2PA/JUMBF provenance parser (CVE-2026-83844): report, Paint reproducer, and reverse-engineering evidence.
windows proof-of-concept reverse-engineering denial-of-service cve security-research vulnerability-research microsoft-paint jumbf c2pa cve-2026-83844 out-of-bounds-read
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Nov 9, 2026 - C
CLI and MCP server for C2PA / Content Credentials provenance: report what a file claims, or fully verify it — COSE signature, certificate chain, hash bindings, RFC 3161 timestamp. Reads JPEG, PNG, WebP, GIF, TIFF/DNG, HEIC, AVIF, SVG, MP4, MOV, AVI, WAV, MP3 and PDF. Wraps github.com/richardwooding/c2pa.
go cli golang pdf png mp4 jpeg mcp mp3 provenance webp claude cose jumbf c2pa content-authenticity content-credentials model-context-protocol mcp-server ai-generated-content
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Nov 9, 2026 - Go
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