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【Golang】http.ClientにRoot CAを読み込ませる

Last updated at Posted at 2020-05-20

RootCAs が nil だと普通にPCの証明書を取りに行っちゃうのでRoot CAをハードコードする

これでBurp Suiteとかを使った中間者攻撃を対策できる・・・ハズ

main.go
    ca := `-----BEGIN CERTIFICATE-----
読み込ませる Root CA の中身
-----END CERTIFICATE-----`
    caCertPool := x509.NewCertPool()
    caCertPool.AppendCertsFromPEM([]byte(ca))

    c := &http.Client{
        Transport: &http.Transport{
            TLSClientConfig: &tls.Config{
                RootCAs:      caCertPool,
            },
        },
    }
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