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Commit 9a3a190

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kovanclaude
authored and
aduh95
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doc: clarify diffieHellman.generateKeys recomputes same key
Clarify that calling generateKeys() after a private key has been set recomputes the same public key deterministically, rather than implying the public key changes. The public key is fully determined by the private key, so the result is identical unless the private key was changed via setPrivateKey(). Fixes: #56990 Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com> PR-URL: #62205 Fixes: #56990 Reviewed-By: Luigi Pinca <luigipinca@gmail.com> Reviewed-By: Gürgün Dayıoğlu <hey@gurgun.day>
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‎doc/api/crypto.md‎

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@@ -1393,8 +1393,10 @@ If `encoding` is provided a string is returned; otherwise a
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[`Buffer`][] is returned.
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This function is a thin wrapper around [`DH_generate_key()`][]. In particular,
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once a private key has been generated or set, calling this function only updates
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the public key but does not generate a new private key.
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once a private key has been generated or set, calling this function only
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recomputes the public key from the existing private key. Since the public key is
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determined by the private key, the result will be the same unless the private key
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has been changed via [`diffieHellman.setPrivateKey()`][].
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### `diffieHellman.getGenerator([encoding])`
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@@ -6907,6 +6909,7 @@ See the [list of SSL OP Flags][] for details.
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[`decipher.final()`]: #decipherfinaloutputencoding
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[`decipher.update()`]: #decipherupdatedata-inputencoding-outputencoding
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[`diffieHellman.generateKeys()`]: #diffiehellmangeneratekeysencoding
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[`diffieHellman.setPrivateKey()`]: #diffiehellmansetprivatekeyprivatekey-encoding
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[`diffieHellman.setPublicKey()`]: #diffiehellmansetpublickeypublickey-encoding
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[`ecdh.generateKeys()`]: #ecdhgeneratekeysencoding-format
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[`ecdh.setPrivateKey()`]: #ecdhsetprivatekeyprivatekey-encoding

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