69 lines
1.7 KiB
Go
69 lines
1.7 KiB
Go
package util
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import (
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"crypto/rand"
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"crypto/rsa"
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"crypto/x509"
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"crypto/x509/pkix"
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"fmt"
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"io/ioutil"
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"math/big"
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"net"
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"time"
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)
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func GetCertPool(paths []string) (*x509.CertPool, error) {
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if len(paths) == 0 {
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return nil, fmt.Errorf("invalid empty list of Root CAs file paths")
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}
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pool := x509.NewCertPool()
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for _, path := range paths {
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// Cert paths are a configurable option
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data, err := ioutil.ReadFile(path) // #nosec G304
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if err != nil {
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return nil, fmt.Errorf("certificate authority file (%s) could not be read - %s", path, err)
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}
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if !pool.AppendCertsFromPEM(data) {
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return nil, fmt.Errorf("loading certificate authority (%s) failed", path)
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}
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}
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return pool, nil
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}
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// https://golang.org/src/crypto/tls/generate_cert.go as a function
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func GenerateCert() ([]byte, []byte, error) {
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var err error
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priv, err := rsa.GenerateKey(rand.Reader, 2048)
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if err != nil {
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return nil, nil, err
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}
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keyBytes, err := x509.MarshalPKCS8PrivateKey(priv)
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if err != nil {
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return nil, keyBytes, err
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}
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serialNumber, err := rand.Int(rand.Reader, new(big.Int).Lsh(big.NewInt(1), 128))
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if err != nil {
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return nil, keyBytes, err
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}
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notBefore := time.Now()
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template := x509.Certificate{
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SerialNumber: serialNumber,
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Subject: pkix.Name{
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Organization: []string{"OAuth2 Proxy Test Suite"},
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},
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NotBefore: notBefore,
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NotAfter: notBefore.Add(time.Hour),
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KeyUsage: x509.KeyUsageDigitalSignature | x509.KeyUsageKeyEncipherment,
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ExtKeyUsage: []x509.ExtKeyUsage{x509.ExtKeyUsageServerAuth},
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IPAddresses: []net.IP{net.ParseIP("127.0.0.1")},
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}
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certBytes, err := x509.CreateCertificate(rand.Reader, &template, &template, &priv.PublicKey, priv)
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return certBytes, keyBytes, err
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}
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