28 lines
802 B
Go
28 lines
802 B
Go
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package config
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import "crypto/tls"
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// TLSConfigFor returns a robus TLS config from a given Config object.
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func TLSConfigFor (conf Config) *tls.Config {
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// following:
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// https://blog.cloudflare.com/exposing-go-on-the-internet/
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return &tls.Config {
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PreferServerCipherSuites: true,
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CurvePreferences: []tls.CurveID {
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// https://safecurves.cr.yp.to/
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tls.X25519,
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tls.CurveP521,
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},
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MinVersion: tls.VersionTLS13,
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CipherSuites: []uint16 {
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tls.TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,
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tls.TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,
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tls.TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,
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tls.TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,
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tls.TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,
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tls.TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
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},
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Certificates: []tls.Certificate { conf.Certificate() },
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}
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}
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