#HKDF

Live, measured metrics for the hashtag #HKDF from the open social web. Every number carries a named source and the time it was fetched. Nothing is estimated.

hashtag.org network · sponsored

Own #hkdf

This #name is available to claim. It becomes your portal on the open agent web: this very page, a keyword you rank for by an open public stake, and a verifiable identity for AI agents. Nobody else sells a page like this for every #name.

$2,449.80/ year · 4-character #name
Claim #hkdf — $2,449.80/yr→Buy on hashtag.space (web3)
card via hashtag.org · tokens via hashtag.space
0
Uses / 7 days
Mastodon
0
Accounts / 7 days
Mastodon
8
Recent posts
Mastodon
~0/hr
Recent pace
Mastodon · last 8
0
Avg reactions / post
Mastodon · last 8
—
Reddit posts / month
Reddit search
—
Open-web mentions
hashtag.org Firehose

Day-by-day usage

measured · fosstodon.org (Mastodon public tags API) · fetched 2026-10-03 14:00 UTC
0
09-27
0
09-28
0
09-29
0
09-30
0
10-01
0
10-02
0
10-03

0 uses by 0 unique accounts across the window. Real per-day counts, not estimates. Newest bar is today so far.

Related hashtags

measured · fosstodon.org (Mastodon public search API) · fetched 2026-10-03 14:00 UTC

No related tags with measured usage found for #hkdf.

Live pulse

measured · fosstodon.org (Mastodon tag timeline) · fetched 2026-10-03 14:00 UTC

Everything below is measured over the latest 8 public posts (spanning ~29366 hours).

Top of the latest posts

  • Я открыл боевую базу своего clipboard-sync, чтобы показать, что он знает о вашем пароле. Ответ: ничего Скопировали пароль от прода и синхронизировали его между ноутбуком и телефоном. Где он теперь лежит и кто может его прочитать? Я сделал с

    Habr@[email protected]♥ 0↻ 02026-06-07 06:42 UTCView post →
  • Я реализовал Double Ratchet в React Native мессенджере. Разбор протокола и кода В прошлой статье про трёхуровневый кэш сообщений я уже упоминал, что делаю мессенджер ONEMIX на React Native. Базовое E2E у меня было простое: ECDH P-256 для об

    Habr@[email protected]♥ 0↻ 02026-05-11 16:12 UTCView post →
  • Windows #Hello support is coming for @cryptomator. My #PR implementing this, including derivation of the #encryption/decryption key using #HKDF, was accepted.

    Ralph Plawetzki@[email protected]♥ 0↻ 02024-12-18 12:21 UTCView post →

What “hkdf” means

Wikipedia

HKDF is a multi-purpose key derivation function (KDF) based on the HMAC message authentication code. HKDF follows "extract-then-expand" paradigm, where the KDF logically consists of two modules: the first stage takes the input keying material and "extracts" from it a fixed-length pseudorandom key, and then the second stage "expands" this key into several additional, independent pseudorandom keys as the output of the KDF.

“HKDF” on Wikipedia (CC BY-SA) →

#hkdf across platforms

every network with a public tag surface

Follow #hkdf straight to each platform’s own tag page. Where a platform publishes open data we measure it above; the rest lock their numbers behind paid APIs, so we link rather than guess.

Every number above is measured from a named public API at the shown fetch time. Nothing is estimated or extrapolated. Platforms that lock their data behind paid APIs are not shown. Agents: the same numbers, as JSON, at /api/hashtags/hkdf