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- Long: curves
- Arg: <algorithm list>
- Help: (EC) TLS key exchange algorithm(s) to request
- Protocols: TLS
- Added: 7.73.0
- Category: tls
- ---
- Tells curl to request specific curves to use during SSL session establishment
- according to RFC 8422, 5.1. Multiple algorithms can be provided by separating
- them with ":" (e.g. "X25519:P-521"). The parameter is available identically
- in the "openssl s_client/s_server" utilities.
- --curves allows a OpenSSL powered curl to make SSL-connections with exactly
- the (EC) curve requested by the client, avoiding intransparent client/server
- negotiations.
- If this option is set, the default curves list built into openssl will be
- ignored.
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