On Thu, Jan 10, 2013 at 8:31 PM, Ines <belhouchet.i...@gmail.com> wrote:
> i have some problems when i try to encrypt a string with a public key stored
> in res/raw thesis the encrypt method code:
>
> // converts the String to a PublicKey instance
> byte[] keyBytes = Base64.decode(keyString.getBytes("utf-8"),
> DEFAULT_KEYS_DIALER);
> X509EncodedKeySpec spec = new X509EncodedKeySpec(keyBytes);
> KeyFactory keyFactory = KeyFactory.getInstance("RSA");
> PublicKey key = keyFactory.generatePublic(spec);
....
>
> and this's my public key stored in res/raw
>
> -----BEGIN CERTIFICATE-----
> MIIDuDCCAqACCQDxZX5jygcxvzANBgkqhkiG9w0BAQUFADCBnTELMAkGA1UEBhMC
What you have is a certificate, not a public key. You are trying to parse it as
a public key, that is why get an exception. Parse the certificate, then extract
the public key from the resulting X509Cetificate if you must.
However, using raw RSA is rarely a good idea. If you want to communicate
securely with your server use standard HTTPS (SSL).
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