Pith Number

pith:26VNPFBP

pith:2025:26VNPFBPUAR7RJBTPPOZ4K3GFS

not attested not anchored not stored refs pending

A5/1 is in the Air: Passive Detection of 2G (GSM) Ciphering Algorithms

Christian Nettersheim, Matthias Koch, Michael Rademacher, Thorsten Horstmann

arxiv:2505.14509 v1 · 2025-05-20 · cs.NI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{26VNPFBPUAR7RJBTPPOZ4K3GFS}

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	2026-07-05T11:06:14.819010Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d7aad7942fa023f8a4337bdd9e2b662c8b9a81e68898b569e4ae80824d1905c1

Aliases

arxiv: 2505.14509 · arxiv_version: 2505.14509v1 · doi: 10.48550/arxiv.2505.14509 · pith_short_12: 26VNPFBPUAR7 · pith_short_16: 26VNPFBPUAR7RJBT · pith_short_8: 26VNPFBP

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/26VNPFBPUAR7RJBTPPOZ4K3GFS \
  | 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: d7aad7942fa023f8a4337bdd9e2b662c8b9a81e68898b569e4ae80824d1905c1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e0efe36256e413cb86fcf49f5bc94a98abd9871c92dfd500b58179b65527f790",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.NI",
    "submitted_at": "2025-05-20T15:38:51Z",
    "title_canon_sha256": "a16dc744a019233ffc03d55c30734bfcda5f20678a88cfb98ff5fdc7155060e6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2505.14509",
    "kind": "arxiv",
    "version": 1
  }
}