91 lines
2.3 KiB
Go
91 lines
2.3 KiB
Go
package main
|
|
|
|
import (
|
|
"fmt"
|
|
"io"
|
|
"os"
|
|
"path/filepath"
|
|
)
|
|
|
|
const (
|
|
RsaLowerLength = 2048
|
|
RsaUpperLength = 4096
|
|
TypeLabelRSA = "RSA PRIVATE KEY"
|
|
TypeLabelECDSA = "EC PRIVATE KEY"
|
|
TypeLabelCSR = "CERTIFICATE REQUEST"
|
|
TypeLabelPubKey = "PUBLIC KEY"
|
|
)
|
|
|
|
var (
|
|
EcdsaLength = []int{224, 256, 384, 521}
|
|
)
|
|
|
|
func main() {
|
|
if len(os.Args) == 1 {
|
|
crash_with_help(1, "No module selected!")
|
|
}
|
|
switch os.Args[1] {
|
|
case "create-private": create_private_key()
|
|
case "create-cert-sign": create_sign_request()
|
|
case "create-public": create_public_key()
|
|
case "help": print_modules()
|
|
case "info": info_on_file()
|
|
case "sign-request": sign_request()
|
|
case "sign-input": sign_input()
|
|
case "verify-signature": verify_signature()
|
|
default: crash_with_help(1, "Command not supported!")
|
|
}
|
|
}
|
|
|
|
// get information on file (private key, sign request, certificate, ...)
|
|
func info_on_file() {}
|
|
// sign a certificate request to create a new certificate
|
|
func sign_request() {}
|
|
|
|
// open stream for given path
|
|
func open_output_stream(path string) (io.WriteCloser, error) {
|
|
switch path {
|
|
case "STDOUT": return os.Stdout, nil
|
|
case "STDERR": return os.Stderr, nil
|
|
default: return open_stream(path, os.O_WRONLY | os.O_CREATE | os.O_TRUNC)
|
|
}
|
|
}
|
|
|
|
func open_input_stream(path string) (io.ReadCloser, error) {
|
|
switch path {
|
|
case "STDIN": return os.Stdin, nil
|
|
default: return open_stream(path, os.O_RDONLY)
|
|
}
|
|
}
|
|
|
|
func open_stream(path string, flags int) (io.ReadWriteCloser, error) {
|
|
var err error
|
|
output_stream, err := os.OpenFile(path, flags, 0600)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return output_stream, nil
|
|
}
|
|
|
|
// print the module help
|
|
func print_modules() {
|
|
fmt.Printf(`Usage: %s command args
|
|
where 'command' is one of:
|
|
create-private create a new private key
|
|
create-public create a public key from a private one
|
|
create-cert-sign create a new certificate sign request
|
|
help show this help
|
|
info get info on a file
|
|
sign sign a certificate request
|
|
sign-input sign a message with a private key
|
|
verify-signature verify a signature
|
|
`, filepath.Base(os.Args[0]))
|
|
fmt.Println()
|
|
}
|
|
|
|
func crash_with_help(code int, message string) {
|
|
fmt.Fprintln(os.Stderr, message)
|
|
print_modules()
|
|
os.Exit(code)
|
|
}
|