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crypto: doc-deprecate multiple Hmac.digest() calls (DEP0206) #63121

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crypto: doc-deprecate multiple Hmac.digest() calls (DEP0206) #63121

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16 changes: 16 additions & 0 deletions doc/api/deprecations.md
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Expand Up @@ -4558,6 +4558,22 @@ that have proven unresolveable. See [caveats of asynchronous customization hooks
`module.registerHooks()` as soon as possible as `module.register()` will be
removed in a future version of Node.js.

### DEP0206: Calling `digest()` on an already-finalized `Hmac` instance

<!-- YAML
changes:
- version: REPLACEME
pr-url: https://github.com/nodejs/node/pull/63121
description: Documentation-only deprecation.
-->

Type: Documentation-only

Calling `hmac.digest()` more than once returns an empty buffer instead of
throwing an error. This behavior is inconsistent with `hash.digest()` and
may lead to subtle bugs. Calling `hmac.digest()` on a finalized `Hmac` instance
will throw an error in a future version.

[DEP0142]: #dep0142-repl_builtinlibs
[NIST SP 800-38D]: https://nvlpubs.nist.gov/nistpubs/Legacy/SP/nistspecialpublication800-38d.pdf
[RFC 6066]: https://tools.ietf.org/html/rfc6066#section-3
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