README
¶
package cert
This package contains functions for creating a local development root certificate that can then be used with net/http tlsConfig servers to dynamically generate SSL certificates in development.
The generated certificates are kept in-memory in a cache and are re-generated on next execution.
On macOS the certificate is installed into the system keychain (a password prompt is shown) so all generated certificates are trusted automatically.
Usage example
You need to run the root certificate creation step once:
keyPath, certPath, err := cert.CreateCert("/path/to/cert/dir", "My CA")
Then install the certificate for your platform:
err := cert.InstallCert(certPath)
Now you can create an HTTPS server that uses the root certificate to generate valid certificates dynamically:
cache, err := cert.NewCache()
tlsConfig := &tls.Config{
GetCertificate: cache.GetCertificate,
}
See https://github.com/moomerman/zap/tree/master/cert/example_test.go for a full example.
Credits
The majority of the code for this package was extracted from https://github.com/puma/puma-dev.
Documentation
¶
Overview ¶
Example ¶
package main
import (
"crypto/tls"
"fmt"
"log"
"net/http"
"github.com/moomerman/zap/cert"
)
func main() {
cache, err := cert.NewCache()
if err != nil {
log.Fatal("Unable to create new cert cache", err)
}
tlsConfig := &tls.Config{
GetCertificate: cache.GetCertificate,
}
server := &http.Server{
TLSConfig: tlsConfig,
}
listener, err := tls.Listen("tcp", ":4443", tlsConfig)
if err != nil {
log.Fatal("Unable to create listener", err)
}
fmt.Println(server.Serve(listener))
}
Output:
Index ¶
- Variables
- func CreateCACert(caName string) ([]byte, []byte, error)
- func CreateCertLegacy() error
- func EncodeCert(cert *tls.Certificate) ([]byte, []byte, error)
- func InstallCert(cert string) error
- func IssueCert(parent *tls.Certificate, commonName string, ipAddress net.IP) (*tls.Certificate, error)
- func LoadCACert(rootDir string) (*tls.Certificate, error)
- type Cache
Examples ¶
Constants ¶
This section is empty.
Variables ¶
var CACert *tls.Certificate
CACert is the self-signed root certificate
Functions ¶
func CreateCACert ¶ added in v0.3.1
CreateCACert creates and returns a new CA certificate key pair
func CreateCertLegacy ¶ added in v0.3.1
func CreateCertLegacy() error
CreateCertLegacy creates a new self-signed root certificate
func EncodeCert ¶ added in v0.3.1
func EncodeCert(cert *tls.Certificate) ([]byte, []byte, error)
EncodeCert is a helper to encode the given certificate
func InstallCert ¶ added in v0.3.1
InstallCert installs a CA certificate root in the system cacerts on linux
func IssueCert ¶ added in v0.3.1
func IssueCert(parent *tls.Certificate, commonName string, ipAddress net.IP) (*tls.Certificate, error)
IssueCert generates a signed Key/Cert pair for the given CACert with the given name
func LoadCACert ¶ added in v0.3.1
func LoadCACert(rootDir string) (*tls.Certificate, error)
LoadCACert loads a certificate key pair into memory
Types ¶
type Cache ¶
type Cache struct {
// contains filtered or unexported fields
}
Cache is a struct to hold the dynamic certificates and a lock
func (*Cache) GetCertificate ¶
func (c *Cache) GetCertificate(clientHello *tls.ClientHelloInfo) (*tls.Certificate, error)
GetCertificate implements the required function for tls config
Source Files