I am making an application which generates a key pair for a user. But in every device the keys are identical. Here is my code:
public KeyPair generateKeys() {
KeyPair keyPair = null;
try {
// get instance of rsa cipher
KeyPairGenerator keyGen = KeyPairGenerator.getInstance("RSA");
keyGen.initialize(1024); // initialize key generator
keyPair = keyGen.generateKeyPair(); // generate pair of keys
} catch(GeneralSecurityException e) {
System.out.println(e);
}
return keyPair;
}
And to show the generated keys code is:
KeyPair keyPair = rsa.generateKeys();
byte[] publicKey = keyPair.getPublic().getEncoded();
byte[] privateKey = keyPair.getPrivate().getEncoded();
privateText.setText( Base64.encodeToString(privateKey, Base64.NO_WRAP) );
publicText.setText( Base64.encodeToString(publicKey, Base64.NO_WRAP) );
The key generation is called only one time for each android device, and for that reason the keys in each device should be different.. Can anyone tell me what i am missing here?
I believe you are only looking at the first few or last few bits. I thought I had the same problem too but when I looked at the bits in the middle, they were indeed different!