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<ol class="chapter"><li class="chapter-item expanded affix "><a href="../../../../index.html">Introduction</a></li><li class="chapter-item expanded "><a href="../../../../vac/index.html"><strong aria-hidden="true">1.</strong> Vac</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../../../../vac/1/coss.html"><strong aria-hidden="true">1.1.</strong> 1/COSS</a></li><li class="chapter-item expanded "><a href="../../../../vac/2/mvds.html"><strong aria-hidden="true">1.2.</strong> 2/MVDS</a></li><li class="chapter-item expanded "><a href="../../../../vac/3/remote-log.html"><strong aria-hidden="true">1.3.</strong> 3/Remote Log</a></li><li class="chapter-item expanded "><a href="../../../../vac/4/mvds-meta.html"><strong aria-hidden="true">1.4.</strong> 4/MVDS Meta</a></li><li class="chapter-item expanded "><a href="../../../../vac/25/libp2p-dns-discovery.html"><strong aria-hidden="true">1.5.</strong> 25/Libp2p DNS Discovery</a></li><li class="chapter-item expanded "><a href="../../../../vac/32/rln-v1.html"><strong aria-hidden="true">1.6.</strong> 32/RLN-V1</a></li><li class="chapter-item expanded "><a href="../../../../vac/raw/index.html"><strong aria-hidden="true">1.7.</strong> Raw</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../../../../vac/raw/consensus-hashgraphlike.html"><strong aria-hidden="true">1.7.1.</strong> Consensus Hashgraphlike</a></li><li class="chapter-item expanded "><a href="../../../../vac/raw/decentralized-messaging-ethereum.html"><strong aria-hidden="true">1.7.2.</strong> Decentralized Messaging Ethereum</a></li><li class="chapter-item expanded "><a href="../../../../vac/raw/eth-mls-offchain.html"><strong aria-hidden="true">1.7.3.</strong> ETH MLS Offchain</a></li><li class="chapter-item expanded "><a href="../../../../vac/raw/eth-mls-onchain.html"><strong aria-hidden="true">1.7.4.</strong> ETH MLS Onchain</a></li><li class="chapter-item expanded "><a href="../../../../vac/raw/deleted/eth-secpm.html"><strong aria-hidden="true">1.7.5.</strong> ETH SecPM</a></li><li class="chapter-item expanded "><a href="../../../../vac/raw/gossipsub-tor-push.html"><strong aria-hidden="true">1.7.6.</strong> Gossipsub Tor Push</a></li><li class="chapter-item expanded "><a href="../../../../vac/raw/logos-capability-discovery.html"><strong aria-hidden="true">1.7.7.</strong> Logos Capability Discovery</a></li><li class="chapter-item expanded "><a href="../../../../vac/raw/mix.html"><strong aria-hidden="true">1.7.8.</strong> Mix</a></li><li class="chapter-item expanded "><a href="../../../../vac/raw/noise-x3dh-double-ratchet.html"><strong aria-hidden="true">1.7.9.</strong> Noise X3DH Double Ratchet</a></li><li class="chapter-item expanded "><a href="../../../../vac/raw/rln-interep-spec.html"><strong aria-hidden="true">1.7.10.</strong> RLN Interep Spec</a></li><li class="chapter-item expanded "><a href="../../../../vac/raw/rln-stealth-commitments.html"><strong aria-hidden="true">1.7.11.</strong> RLN Stealth Commitments</a></li><li class="chapter-item expanded "><a href="../../../../vac/raw/rln-v2.html"><strong aria-hidden="true">1.7.12.</strong> RLN-V2</a></li><li class="chapter-item expanded "><a href="../../../../vac/raw/sds.html"><strong aria-hidden="true">1.7.13.</strong> SDS</a></li></ol></li><li class="chapter-item expanded "><a href="../../../../vac/template.html"><strong aria-hidden="true">1.8.</strong> Template</a></li></ol></li><li class="chapter-item expanded "><a href="../../../../waku/index.html"><strong aria-hidden="true">2.</strong> Waku</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../../../../waku/standards/core/index.html"><strong aria-hidden="true">2.1.</strong> Standards - Core</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../../../../waku/standards/core/10/waku2.html"><strong aria-hidden="true">2.1.1.</strong> 10/Waku2</a></li><li class="chapter-item expanded "><a href="../../../../waku/standards/core/11/relay.html"><strong aria-hidden="true">2.1.2.</strong> 11/Relay</a></li><li class="chapter-item expanded "><a href="../../../../waku/standards/core/12/filter.html"><strong aria-hidden="true">2.1.3.</strong> 12/Filter</a></li><li class="chapter-item expanded "><a href="../../../../waku/standards/core/13/store.html"><strong aria-hidden="true">2.1.4.</strong> 13/Store</a></li><li class="chapter-item expanded "><a href="../../../../waku/standards/core/14/message.html"><strong aria-hidden="true">2.1.5.</strong> 14/Message</a></li><li class="chapter-item expanded "><a href="../../../../waku/standards/core/15/bridge.html"><strong aria-hidden="true">2.1.6.</strong> 15/Bridge</a></li><li class="chapter-item expanded "><a href="../../../../waku/standards/core/17/rln-relay.html"><strong aria-hidden="true">2.1.7.</strong> 17/RLN Relay</a></li><li class="chapter-item expanded "><a href="../../../../waku/standards/core/19/lightpush.html"><strong aria-hidden="true">2.1.8.</strong> 19/Lightpush</a></li><li class="chapter-item expanded "><a href="../../../../waku/standards/core/31/enr.html"><strong aria-hidden="true">2.1.9.</strong> 31/ENR</a></li><li class="chapter-item expanded "><a href="../../../../waku/standards/core/33/discv5.html"><strong aria-hidden="true">2.1.10.</strong> 33/Discv5</a></li><li class="chapter-item expanded "><a href="../../../../waku/standards/core/34/peer-exchange.html"><strong aria-hidden="true">2.1.11.</strong> 34/Peer Exchange</a></li><li class="chapter-item expanded "><a href="../../../../waku/standards/core/36/bindings-api.html"><strong aria-hidden="true">2.1.12.</strong> 36/Bindings API</a></li><li class="chapter-item expanded "><a href="../../../../waku/standards/core/64/network.html"><strong aria-hidden="true">2.1.13.</strong> 64/Network</a></li><li class="chapter-item expanded "><a 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class="chapter-item expanded "><a href="../../../../waku/standards/legacy/index.html"><strong aria-hidden="true">2.3.</strong> Standards - Legacy</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../../../../waku/standards/legacy/6/waku1.html"><strong aria-hidden="true">2.3.1.</strong> 6/Waku1</a></li><li class="chapter-item expanded "><a href="../../../../waku/standards/legacy/7/data.html" class="active"><strong aria-hidden="true">2.3.2.</strong> 7/Data</a></li><li class="chapter-item expanded "><a href="../../../../waku/standards/legacy/8/mail.html"><strong aria-hidden="true">2.3.3.</strong> 8/Mail</a></li><li class="chapter-item expanded "><a href="../../../../waku/standards/legacy/9/rpc.html"><strong aria-hidden="true">2.3.4.</strong> 9/RPC</a></li></ol></li><li class="chapter-item expanded "><a href="../../../../waku/informational/index.html"><strong aria-hidden="true">2.4.</strong> Informational</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../../../../waku/informational/22/toy-chat.html"><strong aria-hidden="true">2.4.1.</strong> 22/Toy Chat</a></li><li class="chapter-item expanded "><a href="../../../../waku/informational/23/topics.html"><strong aria-hidden="true">2.4.2.</strong> 23/Topics</a></li><li class="chapter-item expanded "><a href="../../../../waku/informational/27/peers.html"><strong aria-hidden="true">2.4.3.</strong> 27/Peers</a></li><li class="chapter-item expanded "><a href="../../../../waku/informational/29/config.html"><strong aria-hidden="true">2.4.4.</strong> 29/Config</a></li><li class="chapter-item expanded "><a href="../../../../waku/informational/30/adaptive-nodes.html"><strong aria-hidden="true">2.4.5.</strong> 30/Adaptive Nodes</a></li></ol></li><li class="chapter-item expanded "><a href="../../../../waku/deprecated/index.html"><strong aria-hidden="true">2.5.</strong> Deprecated</a></li><li><ol class="section"><li class="chapter-item expanded "><a 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aria-hidden="true">3.1.1.</strong> NomosDA Encoding</a></li><li class="chapter-item expanded "><a href="../../../../nomos/raw/nomosda-network.html"><strong aria-hidden="true">3.1.2.</strong> NomosDA Network</a></li><li class="chapter-item expanded "><a href="../../../../nomos/raw/p2p-hardware-requirements.html"><strong aria-hidden="true">3.1.3.</strong> P2P Hardware Requirements</a></li><li class="chapter-item expanded "><a href="../../../../nomos/raw/p2p-nat-solution.html"><strong aria-hidden="true">3.1.4.</strong> P2P NAT Solution</a></li><li class="chapter-item expanded "><a href="../../../../nomos/raw/p2p-network-bootstrapping.html"><strong aria-hidden="true">3.1.5.</strong> P2P Network Bootstrapping</a></li><li class="chapter-item expanded "><a href="../../../../nomos/raw/p2p-network.html"><strong aria-hidden="true">3.1.6.</strong> P2P Network</a></li><li class="chapter-item expanded "><a href="../../../../nomos/raw/sdp.html"><strong aria-hidden="true">3.1.7.</strong> SDP</a></li></ol></li><li class="chapter-item expanded "><a href="../../../../nomos/deprecated/index.html"><strong aria-hidden="true">3.2.</strong> Deprecated</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../../../../nomos/deprecated/claro.html"><strong aria-hidden="true">3.2.1.</strong> Claro</a></li></ol></li></ol></li><li class="chapter-item expanded "><a href="../../../../codex/index.html"><strong aria-hidden="true">4.</strong> Codex</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../../../../codex/raw/index.html"><strong aria-hidden="true">4.1.</strong> Raw</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../../../../codex/raw/codex-block-exchange.html"><strong aria-hidden="true">4.1.1.</strong> Block Exchange</a></li><li class="chapter-item expanded "><a href="../../../../codex/raw/codex-marketplace.html"><strong aria-hidden="true">4.1.2.</strong> Marketplace</a></li></ol></li></ol></li><li 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aria-hidden="true">5.6.</strong> 62/Payloads</a></li><li class="chapter-item expanded "><a href="../../../../status/63/keycard-usage.html"><strong aria-hidden="true">5.7.</strong> 63/Keycard Usage</a></li><li class="chapter-item expanded "><a href="../../../../status/65/account-address.html"><strong aria-hidden="true">5.8.</strong> 65/Account Address</a></li><li class="chapter-item expanded "><a href="../../../../status/71/push-notification-server.html"><strong aria-hidden="true">5.9.</strong> 71/Push Notification Server</a></li><li class="chapter-item expanded "><a href="../../../../status/raw/index.html"><strong aria-hidden="true">5.10.</strong> Raw</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../../../../status/raw/simple-scaling.html"><strong aria-hidden="true">5.10.1.</strong> Simple Scaling</a></li><li class="chapter-item expanded "><a href="../../../../status/raw/status-app-protocols.html"><strong aria-hidden="true">5.10.2.</strong> Status App Protocols</a></li><li class="chapter-item expanded "><a href="../../../../status/raw/status-mvds.html"><strong aria-hidden="true">5.10.3.</strong> Status MVDS</a></li><li class="chapter-item expanded "><a href="../../../../status/raw/url-data.html"><strong aria-hidden="true">5.10.4.</strong> URL Data</a></li><li class="chapter-item expanded "><a href="../../../../status/raw/url-scheme.html"><strong aria-hidden="true">5.10.5.</strong> URL Scheme</a></li></ol></li><li class="chapter-item expanded "><a href="../../../../status/deprecated/index.html"><strong aria-hidden="true">5.11.</strong> Deprecated</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../../../../status/deprecated/3rd-party.html"><strong aria-hidden="true">5.11.1.</strong> 3rd Party</a></li><li class="chapter-item expanded "><a href="../../../../status/deprecated/account.html"><strong aria-hidden="true">5.11.2.</strong> Account</a></li><li class="chapter-item expanded "><a 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href="../../../../status/deprecated/keycard-usage-for-wallet-and-chat-keys.html"><strong aria-hidden="true">5.11.9.</strong> Keycard Usage for Wallet and Chat Keys</a></li><li class="chapter-item expanded "><a href="../../../../status/deprecated/notifications.html"><strong aria-hidden="true">5.11.10.</strong> Notifications</a></li><li class="chapter-item expanded "><a href="../../../../status/deprecated/payloads.html"><strong aria-hidden="true">5.11.11.</strong> Payloads</a></li><li class="chapter-item expanded "><a href="../../../../status/deprecated/push-notification-server.html"><strong aria-hidden="true">5.11.12.</strong> Push Notification Server</a></li><li class="chapter-item expanded "><a href="../../../../status/deprecated/secure-transport.html"><strong aria-hidden="true">5.11.13.</strong> Secure Transport</a></li><li class="chapter-item expanded "><a href="../../../../status/deprecated/waku-mailserver.html"><strong aria-hidden="true">5.11.14.</strong> Waku 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<a href="https://github.com/vacp2p/rfc-index" title="Git repository" aria-label="Git repository">
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<i id="git-repository-button" class="fa fa-github"></i>
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</a>
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</div>
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<div id="search-wrapper" class="hidden">
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<form id="searchbar-outer" class="searchbar-outer">
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<input type="search" id="searchbar" name="searchbar" placeholder="Search this book ..." aria-controls="searchresults-outer" aria-describedby="searchresults-header">
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</form>
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<div id="searchresults-outer" class="searchresults-outer hidden">
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<div id="searchresults-header" class="searchresults-header"></div>
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<ul id="searchresults">
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</ul>
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</div>
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</div>
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<!-- Apply ARIA attributes after the sidebar and the sidebar toggle button are added to the DOM -->
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<script>
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document.getElementById('sidebar-toggle').setAttribute('aria-expanded', sidebar === 'visible');
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document.getElementById('sidebar').setAttribute('aria-hidden', sidebar !== 'visible');
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Array.from(document.querySelectorAll('#sidebar a')).forEach(function(link) {
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link.setAttribute('tabIndex', sidebar === 'visible' ? 0 : -1);
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});
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</script>
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<div id="content" class="content">
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<main>
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<h1 id="7waku-data"><a class="header" href="#7waku-data">7/WAKU-DATA</a></h1>
|
|
<div class="table-wrapper"><table><thead><tr><th>Field</th><th>Value</th></tr></thead><tbody>
|
|
<tr><td>Name</td><td>Waku Envelope data field</td></tr>
|
|
<tr><td>Slug</td><td>7</td></tr>
|
|
<tr><td>Status</td><td>stable</td></tr>
|
|
<tr><td>Editor</td><td>Oskar Thorén <a href="mailto:oskarth@titanproxy.com">oskarth@titanproxy.com</a></td></tr>
|
|
<tr><td>Contributors</td><td>Dean Eigenmann <a href="mailto:dean@status.im">dean@status.im</a>, Kim De Mey <a href="mailto:kimdemey@status.im">kimdemey@status.im</a></td></tr>
|
|
</tbody></table>
|
|
</div><!-- timeline:start -->
|
|
<h2 id="timeline"><a class="header" href="#timeline">Timeline</a></h2>
|
|
<ul>
|
|
<li><strong>2025-12-22</strong> — <a href="https://github.com/vacp2p/rfc-index/blob/0f1855edcf68ef982c4ce478b67d660809aa9830/docs/waku/standards/legacy/7/data.md"><code>0f1855e</code></a> — Chore/fix headers (#239)</li>
|
|
<li><strong>2025-12-22</strong> — <a href="https://github.com/vacp2p/rfc-index/blob/b1a578393edf8487ccc97a5f25b25af9bf41efb3/docs/waku/standards/legacy/7/data.md"><code>b1a5783</code></a> — Chore/mdbook updates (#237)</li>
|
|
<li><strong>2025-12-18</strong> — <a href="https://github.com/vacp2p/rfc-index/blob/d03e699084774ebecef9c6d4662498907c5e2080/docs/waku/standards/legacy/7/data.md"><code>d03e699</code></a> — ci: add mdBook configuration (#233)</li>
|
|
<li><strong>2024-09-13</strong> — <a href="https://github.com/vacp2p/rfc-index/blob/3ab314d87d4525ff1296bf3d9ec634d570777b91/waku/standards/legacy/7/data.md"><code>3ab314d</code></a> — Fix Files for Linting (#94)</li>
|
|
<li><strong>2024-03-21</strong> — <a href="https://github.com/vacp2p/rfc-index/blob/2eaa7949c4abe7d14e2b9560e8c045bf2e937c9a/waku/standards/legacy/7/data.md"><code>2eaa794</code></a> — Broken Links + Change Editors (#26)</li>
|
|
<li><strong>2024-02-12</strong> — <a href="https://github.com/vacp2p/rfc-index/blob/a57d7b4732eb600c2f9281a26d106d526308ed49/waku/standards/legacy/7/data.md"><code>a57d7b4</code></a> — Rename data.md to data.md</li>
|
|
<li><strong>2024-01-31</strong> — <a href="https://github.com/vacp2p/rfc-index/blob/900a3e92b4d8fd1ecbc4b8cd59429faf6aff4e71/waku/standards/application/7/data.md"><code>900a3e9</code></a> — Update and rename DATA.md to data.md</li>
|
|
<li><strong>2024-01-27</strong> — <a href="https://github.com/vacp2p/rfc-index/blob/662eb12909d9ba09a345fea0864f08f5a780b913/waku/standards/application/7/DATA.md"><code>662eb12</code></a> — Rename README.md to DATA.md</li>
|
|
<li><strong>2024-01-27</strong> — <a href="https://github.com/vacp2p/rfc-index/blob/eef961bfe3b1cf6aab66df5450555afd1d3543cb/waku/standards/application/07/README.md"><code>eef961b</code></a> — remove rfs folder</li>
|
|
<li><strong>2024-01-25</strong> — <a href="https://github.com/vacp2p/rfc-index/blob/93c389620d94c46689856a85f3393b8fa50cca2e/waku/rfcs/standards/application/07/README.md"><code>93c3896</code></a> — Create README.md</li>
|
|
</ul>
|
|
<!-- timeline:end -->
|
|
<p>This specification describes the encryption,
|
|
decryption and signing of the content in the <a href="../6/waku1.html">data field used in Waku</a>.</p>
|
|
<h2 id="specification"><a class="header" href="#specification">Specification</a></h2>
|
|
<p>The <code>data</code> field is used within the <code>waku envelope</code>,
|
|
the field MUST contain the encrypted payload of the envelope.</p>
|
|
<p>The fields that are concatenated and encrypted as part of the <code>data</code> field are:</p>
|
|
<ul>
|
|
<li>flags</li>
|
|
<li>auxiliary field</li>
|
|
<li>payload</li>
|
|
<li>padding</li>
|
|
<li>signature</li>
|
|
</ul>
|
|
<p>In case of symmetric encryption, a <code>salt</code>
|
|
(a.k.a. AES Nonce, 12 bytes) field MUST be appended.</p>
|
|
<h3 id="abnf"><a class="header" href="#abnf">ABNF</a></h3>
|
|
<p>Using <a href="https://tools.ietf.org/html/rfc5234">Augmented Backus-Naur form (ABNF)</a>
|
|
we have the following format:</p>
|
|
<pre><code class="language-abnf">; 1 byte; first two bits contain the size of auxiliary field,
|
|
; third bit indicates whether the signature is present.
|
|
flags = 1OCTET
|
|
|
|
; contains the size of payload.
|
|
auxiliary-field = 4*OCTET
|
|
|
|
; byte array of arbitrary size (may be zero)
|
|
payload = *OCTET
|
|
|
|
; byte array of arbitrary size (may be zero).
|
|
padding = *OCTET
|
|
|
|
; 65 bytes, if present.
|
|
signature = 65OCTET
|
|
|
|
; 2 bytes, if present (in case of symmetric encryption).
|
|
salt = 2OCTET
|
|
|
|
data = flags auxiliary-field payload padding [signature] [salt]
|
|
</code></pre>
|
|
<h3 id="signature"><a class="header" href="#signature">Signature</a></h3>
|
|
<p>Those unable to decrypt the envelope data are also unable to access the signature.
|
|
The signature, if provided,
|
|
is the ECDSA signature of the Keccak-256 hash of the unencrypted data
|
|
using the secret key of the originator identity.
|
|
The signature is serialized as the concatenation of the <code>R</code>, <code>S</code> and
|
|
<code>V</code> parameters of the SECP-256k1 ECDSA signature, in that order.
|
|
<code>R</code> and <code>S</code> MUST be big-endian encoded, fixed-width 256-bit unsigned.
|
|
<code>V</code> MUST be an 8-bit big-endian encoded,
|
|
non-normalized and should be either 27 or 28.</p>
|
|
<h3 id="padding"><a class="header" href="#padding">Padding</a></h3>
|
|
<p>The padding field is used to align data size,
|
|
since data size alone might reveal important metainformation.
|
|
Padding can be arbitrary size.
|
|
However, it is recommended that the size of Data Field (excluding the Salt)
|
|
before encryption (i.e. plain text) SHOULD be factor of 256 bytes.</p>
|
|
<h2 id="copyright"><a class="header" href="#copyright">Copyright</a></h2>
|
|
<p>Copyright and related rights waived via <a href="https://creativecommons.org/publicdomain/zero/1.0/">CC0</a>.</p>
|
|
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