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    DiffieHellmanGroup

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    The DiffieHellmanGroup class takes a well-known modp group as its argument. It works the same as DiffieHellman, except that it does not allow changing its keys after creation. In other words, it does not implement setPublicKey() or setPrivateKey() methods.

    const { createDiffieHellmanGroup } = await import('node:crypto');
const dh = createDiffieHellmanGroup('modp16');
    JavaScript
    const { createDiffieHellmanGroup } = require('node:crypto');
const dh = createDiffieHellmanGroup('modp16');
    JavaScript

    The following groups are supported:

    • '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)

    The following groups are still supported but deprecated (see Caveats):

    • 'modp1' (768 bits, RFC 2409 Section 6.1)
    • 'modp2' (1024 bits, RFC 2409 Section 6.2)
    • 'modp5' (1536 bits, RFC 3526 Section 2)

    These deprecated groups might be removed in future versions of Node.js.

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