mirror of https://github.com/portainer/portainer
80 lines
2.2 KiB
Go
80 lines
2.2 KiB
Go
package crypto
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import (
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"crypto/tls"
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"crypto/x509"
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"os"
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)
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// CreateTLSConfiguration creates a basic tls.Config with recommended TLS settings
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func CreateTLSConfiguration() *tls.Config {
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return &tls.Config{
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MinVersion: tls.VersionTLS12,
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CipherSuites: []uint16{
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tls.TLS_AES_128_GCM_SHA256,
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tls.TLS_AES_256_GCM_SHA384,
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tls.TLS_CHACHA20_POLY1305_SHA256,
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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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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_RSA_WITH_AES_128_GCM_SHA256,
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tls.TLS_RSA_WITH_AES_256_GCM_SHA384,
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},
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}
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}
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// CreateTLSConfigurationFromBytes initializes a tls.Config using a CA certificate, a certificate and a key
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// loaded from memory.
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func CreateTLSConfigurationFromBytes(caCert, cert, key []byte, skipClientVerification, skipServerVerification bool) (*tls.Config, error) {
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config := CreateTLSConfiguration()
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config.InsecureSkipVerify = skipServerVerification
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if !skipClientVerification {
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certificate, err := tls.X509KeyPair(cert, key)
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if err != nil {
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return nil, err
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}
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config.Certificates = []tls.Certificate{certificate}
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}
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if !skipServerVerification {
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caCertPool := x509.NewCertPool()
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caCertPool.AppendCertsFromPEM(caCert)
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config.RootCAs = caCertPool
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}
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return config, nil
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}
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// CreateTLSConfigurationFromDisk initializes a tls.Config using a CA certificate, a certificate and a key
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// loaded from disk.
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func CreateTLSConfigurationFromDisk(caCertPath, certPath, keyPath string, skipServerVerification bool) (*tls.Config, error) {
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config := CreateTLSConfiguration()
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config.InsecureSkipVerify = skipServerVerification
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if certPath != "" && keyPath != "" {
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cert, err := tls.LoadX509KeyPair(certPath, keyPath)
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if err != nil {
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return nil, err
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}
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config.Certificates = []tls.Certificate{cert}
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}
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if !skipServerVerification && caCertPath != "" {
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caCert, err := os.ReadFile(caCertPath)
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if err != nil {
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return nil, err
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}
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caCertPool := x509.NewCertPool()
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caCertPool.AppendCertsFromPEM(caCert)
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config.RootCAs = caCertPool
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}
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return config, nil
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}
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