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doc: list supported MODP groups explicitly #43986

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Jul 27, 2022
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doc: list supported MODP groups explicitly #43986

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25 changes: 11 additions & 14 deletions doc/api/crypto.md
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Expand Up @@ -1181,20 +1181,16 @@ const { createDiffieHellmanGroup } = require('node:crypto');
const dh = createDiffieHellmanGroup('modp1');
```

The name (e.g. `'modp1'`) is taken from [RFC 2412][] (modp1 and 2) and
[RFC 3526][]:

```console
$ perl -ne 'print "$1\n" if /"(modp\d+)"/' src/node_crypto_groups.h
modp1 # 768 bits
modp2 # 1024 bits
modp5 # 1536 bits
modp14 # 2048 bits
modp15 # etc.
modp16
modp17
modp18
```
The following groups are supported:

* `'modp1'` (768 bits, [RFC 2409][] Section 6.1)
* `'modp2'` (1024 bits, [RFC 2409][] Section 6.2)
* `'modp5'` (1536 bits, [RFC 3526][] Section 2)
* `'modp14'` (2048 bits, [RFC 3526][] Section 3)
* `'modp15'` (3072 bits, [RFC 3526][] Section 4)
* `'modp16'` (4096 bits, [RFC 3526][] Section 5)
* `'modp17'` (6144 bits, [RFC 3526][] Section 6)
* `'modp18'` (8192 bits, [RFC 3526][] Section 7)

## Class: `ECDH`

Expand Down Expand Up @@ -6105,6 +6101,7 @@ See the [list of SSL OP Flags][] for details.
[Nonce-Disrespecting Adversaries]: https://github.com/nonce-disrespect/nonce-disrespect
[OpenSSL's SPKAC implementation]: https://www.openssl.org/docs/man1.1.0/apps/openssl-spkac.html
[RFC 1421]: https://www.rfc-editor.org/rfc/rfc1421.txt
[RFC 2409]: https://www.rfc-editor.org/rfc/rfc2409.txt
[RFC 2412]: https://www.rfc-editor.org/rfc/rfc2412.txt
[RFC 2818]: https://www.rfc-editor.org/rfc/rfc2818.txt
[RFC 3526]: https://www.rfc-editor.org/rfc/rfc3526.txt
Expand Down