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package pkcs12
import (
"crypto/rand"
"crypto/rsa"
"crypto/x509"
"encoding/asn1"
"fmt"
"testing"
)
func decodePkcs8ShroudedKeyBag(asn1Data, password []byte) (privateKey interface{}, err error) {
pkinfo := new(encryptedPrivateKeyInfo)
if _, err = asn1.Unmarshal(asn1Data, pkinfo); err != nil {
err = fmt.Errorf("error decoding PKCS8 shrouded key bag: %v", err)
return nil, err
}
pkData, err := pbDecrypt(pkinfo, password)
if err != nil {
err = fmt.Errorf("error decrypting PKCS8 shrouded key bag: %v", err)
return
}
rv := new(asn1.RawValue)
if _, err = asn1.Unmarshal(pkData, rv); err != nil {
err = fmt.Errorf("could not decode decrypted private key data")
}
if privateKey, err = x509.ParsePKCS8PrivateKey(pkData); err != nil {
err = fmt.Errorf("error parsing PKCS8 private key: %v", err)
return nil, err
}
return
}
// Assert the default algorithm parameters are in the correct order,
// and default to the correct value. Defaults are based on OpenSSL.
// 1. IterationCount, defaults to 2,048 long.
// 2. Salt, is 8 bytes long.
func TestDefaultAlgorithmParametersPkcs8ShroudedKeyBag(t *testing.T) {
privateKey, err := rsa.GenerateKey(rand.Reader, 512)
if err != nil {
t.Fatalf("failed to generate a private key: %s", err)
}
password := []byte("sesame")
bytes, err := encodePkcs8ShroudedKeyBag(privateKey, password)
if err != nil {
t.Fatalf("failed to encode PKCS#8 shrouded key bag: %s", err)
}
var pkinfo encryptedPrivateKeyInfo
rest, err := asn1.Unmarshal(bytes, &pkinfo)
if err != nil {
t.Fatalf("failed to unmarshal encryptedPrivateKeyInfo %s", err)
}
if len(rest) != 0 {
t.Fatalf("unexpected trailing bytes of len=%d, bytes=%x", len(rest), rest)
}
var params pbeParams
rest, err = asn1.Unmarshal(pkinfo.GetAlgorithm().Parameters.FullBytes, ¶ms)
if err != nil {
t.Fatalf("failed to unmarshal encryptedPrivateKeyInfo %s", err)
}
if len(rest) != 0 {
t.Fatalf("unexpected trailing bytes of len=%d, bytes=%x", len(rest), rest)
}
if params.Iterations != pbeIterationCount {
t.Errorf("expected iteration count to be %d, but actual=%d", pbeIterationCount, params.Iterations)
}
if len(params.Salt) != pbeSaltSizeBytes {
t.Errorf("expected the number of salt bytes to be %d, but actual=%d", pbeSaltSizeBytes, len(params.Salt))
}
}
func TestRoundTripPkcs8ShroudedKeyBag(t *testing.T) {
privateKey, err := rsa.GenerateKey(rand.Reader, 512)
if err != nil {
t.Fatalf("failed to generate a private key: %s", err)
}
password := []byte("sesame")
bytes, err := encodePkcs8ShroudedKeyBag(privateKey, password)
if err != nil {
t.Fatalf("failed to encode PKCS#8 shrouded key bag: %s", err)
}
key, err := decodePkcs8ShroudedKeyBag(bytes, password)
if err != nil {
t.Fatalf("failed to decode PKCS#8 shrouded key bag: %s", err)
}
actualPrivateKey := key.(*rsa.PrivateKey)
if actualPrivateKey.D.Cmp(privateKey.D) != 0 {
t.Fatal("failed to round-trip rsa.PrivateKey.D")
}
}
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