private static PrivateKey readPrivateKey(InputStream input)
throws IOException, GeneralSecurityException {
try {
byte[] bytes = ByteBuffer.getBytes(input);
KeySpec spec = Signer.decryptPrivateKey(bytes);
if (spec == null) {
spec = new PKCS8EncodedKeySpec(bytes);
}
try {
return KeyFactory.getInstance("RSA").generatePrivate(spec);
} catch (InvalidKeySpecException ex) {
return KeyFactory.getInstance("DSA").generatePrivate(spec);
}
} finally {
input.close();
}
}
