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diff --git a/activitypub/keys.go b/activitypub/keys.go
index fee1b79..7dbddfc 100644
--- a/activitypub/keys.go
+++ b/activitypub/keys.go
@@ -1,81 +1,61 @@
package activitypub
import (
- "bytes"
"crypto"
"crypto/rsa"
"crypto/x509"
"encoding/pem"
"fmt"
+ "github.com/writeas/openssl-go"
"log"
- "os/exec"
)
const keyBitSize = 2048
-func openssl(stdin []byte, args ...string) ([]byte, error) {
- cmd := exec.Command("openssl", args...)
-
- in := bytes.NewReader(stdin)
- out := &bytes.Buffer{}
- errs := &bytes.Buffer{}
-
- cmd.Stdin, cmd.Stdout, cmd.Stderr = in, out, errs
-
- if err := cmd.Run(); err != nil {
- if len(errs.Bytes()) > 0 {
- return nil, fmt.Errorf("error running %s (%s):\n %v", cmd.Args, err, errs.String())
- }
- return nil, err
- }
-
- return out.Bytes(), nil
-}
-
// GenerateKeys creates an RSA keypair and returns the public and private key,
// in that order.
func GenerateKeys() (pubPEM []byte, privPEM []byte) {
var err error
- privPEM, err = openssl(nil, "genrsa", fmt.Sprintf("%d", keyBitSize))
+ privPEM, err = openssl.Call(nil, "genrsa", fmt.Sprintf("%d", keyBitSize))
if err != nil {
log.Printf("Unable to generate private key: %v", err)
return nil, nil
}
- pubPEM, err = openssl(privPEM, "rsa", "-in", "/dev/stdin", "-pubout")
+ pubPEM, err = openssl.Call(privPEM, "rsa", "-in", "/dev/stdin", "-pubout")
if err != nil {
log.Printf("Unable to get public key: %v", err)
return nil, nil
}
return
}
func parsePrivateKey(der []byte) (crypto.PrivateKey, error) {
if key, err := x509.ParsePKCS1PrivateKey(der); err == nil {
return key, nil
}
if key, err := x509.ParsePKCS8PrivateKey(der); err == nil {
switch key := key.(type) {
case *rsa.PrivateKey:
return key, nil
default:
return nil, fmt.Errorf("found unknown private key type in PKCS#8 wrapping")
}
}
if key, err := x509.ParseECPrivateKey(der); err == nil {
return key, nil
}
return nil, fmt.Errorf("failed to parse private key")
}
// DecodePrivateKey encodes public and private key to PEM format, returning
// them in that order.
func DecodePrivateKey(k []byte) (crypto.PrivateKey, error) {
block, _ := pem.Decode(k)
if block == nil || block.Type != "RSA PRIVATE KEY" {
return nil, fmt.Errorf("failed to decode PEM block containing private key")
}
return parsePrivateKey(block.Bytes)
}

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