Pith Number

pith:MP2HEK2Y

pith:2019:MP2HEK2YN3UF4EE22J3GP7CKKC

not attested not anchored not stored refs pending

Weak Keys and Cryptanalysis of a Cold War Block Cipher

Marios Georgiou

arxiv:1901.06504 v1 · 2019-01-19 · 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{MP2HEK2YN3UF4EE22J3GP7CKKC}

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	2026-05-17T23:55:50.063479Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

63f4722b586ee85e109ad27667fc4a50849af91629c4ccd3c48d8b261e7cdf7a

Aliases

arxiv: 1901.06504 · arxiv_version: 1901.06504v1 · doi: 10.48550/arxiv.1901.06504 · pith_short_12: MP2HEK2YN3UF · pith_short_16: MP2HEK2YN3UF4EE2 · pith_short_8: MP2HEK2Y

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/MP2HEK2YN3UF4EE22J3GP7CKKC \
  | 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: 63f4722b586ee85e109ad27667fc4a50849af91629c4ccd3c48d8b261e7cdf7a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "19f926708c5540faac6a8168a30be542129359fe4391b8b745254a7bcf9f23f9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2019-01-19T11:22:32Z",
    "title_canon_sha256": "3fc9efbf8558c9f59005ebe668d09d022d4545056c684e70cbdba8c284acb89e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.06504",
    "kind": "arxiv",
    "version": 1
  }
}