Pith Number

pith:HFEAPJBF

pith:2025:HFEAPJBFSJSZKFYCNSWTWAV46G

not attested not anchored not stored refs pending

From Cyber Threat to Data Shield: Constructing Provably Secure File Erasure with Repurposed Ransomware Cryptography

Jiahui Shang, Luning Zhang, Zhongxiang Zheng

arxiv:2504.11744 v1 · 2025-04-16 · cs.CR

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HFEAPJBFSJSZKFYCNSWTWAV46G}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-07-05T10:49:56.778731Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

394807a42592659517026cad3b02bcf194fc2ea18bfffc47871e20af2909bf4f

Aliases

arxiv: 2504.11744 · arxiv_version: 2504.11744v1 · doi: 10.48550/arxiv.2504.11744 · pith_short_12: HFEAPJBFSJSZ · pith_short_16: HFEAPJBFSJSZKFYC · pith_short_8: HFEAPJBF

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/HFEAPJBFSJSZKFYCNSWTWAV46G \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 394807a42592659517026cad3b02bcf194fc2ea18bfffc47871e20af2909bf4f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "817c9cb75b39194a02873c1bcbee731ccac415be771171a9346b80298d9d85cf",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2025-04-16T03:47:17Z",
    "title_canon_sha256": "3731f3c5301483dc01dec9acdce2a6e1f194fb1049201219e000592a7d9735ab"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2504.11744",
    "kind": "arxiv",
    "version": 1
  }
}