forked from TrueCloudLab/lego
56 lines
1 KiB
Go
56 lines
1 KiB
Go
package main
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import (
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"crypto"
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"crypto/ecdsa"
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"crypto/elliptic"
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"crypto/rand"
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"crypto/x509"
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"encoding/pem"
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"errors"
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"io/ioutil"
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"os"
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)
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func generatePrivateKey(file string) (crypto.PrivateKey, error) {
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privateKey, err := ecdsa.GenerateKey(elliptic.P384(), rand.Reader)
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if err != nil {
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return nil, err
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}
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keyBytes, err := x509.MarshalECPrivateKey(privateKey)
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if err != nil {
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return nil, err
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}
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pemKey := pem.Block{Type: "EC PRIVATE KEY", Bytes: keyBytes}
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certOut, err := os.Create(file)
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if err != nil {
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return nil, err
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}
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pem.Encode(certOut, &pemKey)
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certOut.Close()
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return privateKey, nil
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}
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func loadPrivateKey(file string) (crypto.PrivateKey, error) {
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keyBytes, err := ioutil.ReadFile(file)
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if err != nil {
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return nil, err
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}
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keyBlock, _ := pem.Decode(keyBytes)
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switch keyBlock.Type {
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case "RSA PRIVATE KEY":
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return x509.ParsePKCS1PrivateKey(keyBlock.Bytes)
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case "EC PRIVATE KEY":
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return x509.ParseECPrivateKey(keyBlock.Bytes)
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}
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return nil, errors.New("Unknown private key type.")
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}
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