54 lines
1.1 KiB
Go
54 lines
1.1 KiB
Go
package main
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import (
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"fmt"
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"os"
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"github.com/gibheer/pki"
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)
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func loadPrivateKey(path string) (pki.PrivateKey, error) {
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if path == "" {
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return nil, fmt.Errorf("no path given")
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}
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var err error
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file, err := os.Open(path)
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if err != nil {
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return nil, err
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}
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defer file.Close()
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info, err := file.Stat()
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if err != nil {
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return nil, err
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}
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if info.Mode().Perm().String()[4:] != "------" {
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return nil, fmt.Errorf("private key must not be readable for group or world")
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}
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pems, err := parseFile(file)
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if err != nil {
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return nil, err
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}
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if len(pems) > 1 {
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return nil, fmt.Errorf("more than one object in file")
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}
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var pk pki.PrivateKey
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for key, parts := range pems {
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if len(parts) > 1 {
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return nil, fmt.Errorf("more than one object found")
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}
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switch key {
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case pki.PemLabelRsa:
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pk, err = pki.LoadPrivateKeyRsa(parts[0])
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case pki.PemLabelEd25519:
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pk, err = pki.LoadPrivateKeyEd25519(parts[0])
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case pki.PemLabelEcdsa:
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pk, err = pki.LoadPrivateKeyEcdsa(parts[0])
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default:
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return nil, fmt.Errorf("unknown private key format %s", key)
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}
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}
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return pk, err
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}
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