Пример #1
0
 private byte[] getPublicKeyBytes(PublicKey publicKey)
     throws IOException, InvalidKeySpecException, NoSuchAlgorithmException {
   byte[] enc = publicKey.getEncoded();
   ASN1InputStream ap = new ASN1InputStream(enc);
   DERSequence der = (DERSequence) ap.readObject();
   DERBitString key = (DERBitString) der.getObjectAt(1);
   byte[] k = key.getBytes();
   ap.close();
   return k;
 }
Пример #2
0
  private EncodedKeySpec getSpec(byte[] encodedKey, PublicKey pub)
      throws IOException, InvalidKeySpecException, NoSuchAlgorithmException {
    byte[] encc = pub.getEncoded();
    ASN1InputStream ap = new ASN1InputStream(encc);
    DERSequence der = (DERSequence) ap.readObject();
    DERSequence s1 = (DERSequence) der.getObjectAt(0);

    DERBitString bit = new DERBitString(encodedKey);
    DERSequence s2 = new DERSequence(new DERObject[] {s1, bit});
    byte[] enc = s2.getEncoded();
    X509EncodedKeySpec keySpec = new X509EncodedKeySpec(enc);
    ap.close();
    return keySpec;
  }