ok thanks Nikolay ,i'll try the HTTPS ,but don't have a great idea
about this approach "HTTPS",can you please give me some examples or
tutorials.
thanks a lot.
2013/1/10, Nikolay Elenkov <nikolay.elen...@gmail.com>:
> 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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