public boolean generateKeys() {
PublicKey keyPub;
PrivateKey keyPri;
SecureRandom rand;
Security.addProvider(new ABAProvider());
rand = new SecureRandom();
rand.setSeed(System.currentTimeMillis());
try {
KeyPairGenerator fact;
KeyPair keyPair;
fact = KeyPairGenerator.getInstance("RSA", "ABA");
fact.initialize(1024, rand);
keyPair = fact.generateKeyPair();
keyPub = keyPair.getPublic();
keyPri = keyPair.getPrivate();
pubKey = bytesToHexStr(keyPub.getEncoded());
priKey = bytesToHexStr(keyPri.getEncoded());
} catch (Exception e) {
return false;
}
return true;
}
public String generateSigature(String src) {
try {
Security.addProvider(new ABAProvider());
Signature sigEng = Signature.getInstance("MD5withRSA", "ABA");
byte[] pribyte = hexStrToBytes(priKey.trim());
sigEng.initSign(new RSAPrivKeyCrt(pribyte));
sigEng.update(src.getBytes());
byte[] signature = sigEng.sign();
return bytesToHexStr(signature);
} catch (Exception e) {
return null;
}
}
public boolean verifySigature(String sign, String src) {
try {
Security.addProvider(new ABAProvider());
Signature sigEng = Signature.getInstance("MD5withRSA", "ABA");
byte[] pubbyte = hexStrToBytes(pubKey.trim());
sigEng.initVerify(new RSAPubKey(pubbyte));
sigEng.update(src.getBytes());
byte[] sign1 = hexStrToBytes(sign);
if (sigEng.verify(sign1)) {
return true;
} else {
return false;
}
} catch (Exception e) {
return false;
}
}