-
Notifications
You must be signed in to change notification settings - Fork 1
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Merge pull request #26 from ninedraft/test-certs
- Loading branch information
Showing
6 changed files
with
134 additions
and
16 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,115 @@ | ||
| package main | ||
|
|
||
| import ( | ||
| "crypto/rand" | ||
| "crypto/rsa" | ||
| "crypto/x509" | ||
| "crypto/x509/pkix" | ||
| "encoding/pem" | ||
| "flag" | ||
| "fmt" | ||
| "log" | ||
| "math/big" | ||
| "os" | ||
| "strings" | ||
| "time" | ||
| ) | ||
|
|
||
| const ( | ||
| keySize = 4096 | ||
| dateFormat = "2006-01-02" | ||
| ) | ||
|
|
||
| func main() { | ||
| keyOut := "key.pem" | ||
| flag.StringVar(&keyOut, "key", keyOut, "dst file to write private key") | ||
|
|
||
| certOut := "cert.pem" | ||
| flag.StringVar(&certOut, "cert.pem", certOut, "dst file to write certificate") | ||
|
|
||
| var dnsNames []string | ||
| flag.Func("dns", "DNS records for cert", func(name string) error { | ||
| if strings.TrimSpace(name) == "" { | ||
| return nil | ||
| } | ||
| dnsNames = append(dnsNames, name) | ||
| return nil | ||
| }) | ||
|
|
||
| organization := "dev" | ||
| flag.StringVar(&organization, "org", organization, "organization which generates the certificate") | ||
|
|
||
| country := "OO" | ||
| flag.StringVar(&country, "country", country, "country of certificate emitter") | ||
|
|
||
| locality := "ether" | ||
| flag.StringVar(&locality, "loc", locality, "locality of certificate emitter") | ||
|
|
||
| expiration := time.Now().AddDate(32, 0, 0) | ||
| flag.Func("exp", | ||
| "certificate expiration date. Format: "+dateFormat+". Default: "+expiration.Format(dateFormat), | ||
| func(value string) error { | ||
| t, errParse := time.Parse(value, dateFormat) | ||
| if errParse != nil { | ||
| return errParse | ||
| } | ||
| expiration = t | ||
| return nil | ||
| }) | ||
| flag.Parse() | ||
|
|
||
| log.Print("generating private key") | ||
| privKey, errKey := rsa.GenerateKey(rand.Reader, keySize) | ||
| if errKey != nil { | ||
| panic(errKey) | ||
| } | ||
|
|
||
| certTemplate := &x509.Certificate{ | ||
| SerialNumber: big.NewInt(2019), | ||
| Subject: pkix.Name{ | ||
| Organization: []string{organization}, | ||
| Country: []string{country}, | ||
| Locality: []string{locality}, | ||
| }, | ||
| DNSNames: dnsNames, | ||
| NotBefore: time.Now(), | ||
| NotAfter: time.Now().AddDate(10, 0, 0), | ||
| IsCA: false, | ||
| ExtKeyUsage: []x509.ExtKeyUsage{x509.ExtKeyUsageClientAuth, x509.ExtKeyUsageServerAuth}, | ||
| KeyUsage: x509.KeyUsageDigitalSignature | x509.KeyUsageCertSign, | ||
| BasicConstraintsValid: true, | ||
| } | ||
|
|
||
| log.Print("generating certificate") | ||
| certEncoded, errCert := x509.CreateCertificate(rand.Reader, certTemplate, certTemplate, &privKey.PublicKey, privKey) | ||
| if errCert != nil { | ||
| panic(errCert) | ||
| } | ||
| keyEncoded := x509.MarshalPKCS1PrivateKey(privKey) | ||
|
|
||
| log.Print("writing key and certificate data") | ||
| if err := writePEM(keyOut, "RSA PRIVATE KEY", keyEncoded); err != nil { | ||
| panic(err) | ||
| } | ||
| if err := writePEM(certOut, "CERTIFICATE", certEncoded); err != nil { | ||
| panic(err) | ||
| } | ||
| } | ||
|
|
||
| func writePEM(file, name string, data []byte) error { | ||
| // #nosec G304 // hardcoded in code | ||
| f, errCreate := os.Create(file) | ||
| if errCreate != nil { | ||
| return fmt.Errorf("creating file: %w", errCreate) | ||
| } | ||
| defer func() { _ = f.Close() }() | ||
|
|
||
| errEncode := pem.Encode(f, &pem.Block{ | ||
| Type: name, | ||
| Bytes: data, | ||
| }) | ||
| if errEncode != nil { | ||
| return fmt.Errorf("encoding PEM data: %w", errEncode) | ||
| } | ||
| return nil | ||
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters