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public class test {
    static String n = "21989813755621156293273501389493103170478328865382851535119108650514578230710085815320625775002099957978047341520630619620968646687641136648474885196527432975032680128867461330713312410713852757543371126481833686429634246895522221843242400928239808073984384986341957082609978353191102506262999820889287314940454068736561332035836375947373095017281035332790078205824154732301582606749476995280424823282151268108966524365305986387988471004945472743386691892679883533938532545175617206571176967648832197838471513091863241277420160655821470900975715819210425380750123100541143689073853835049178798646417287183721931874617";
    static String e = "6333852850525055576973677246890478791356324122126922020056508750717361082458981795562925565019983229423861325142819235036468333056481098257675212595249223374119839217428796977888447722310227787420025584854320071085527346058665684754182931814431280910212601055696432913444749704337831179497484590672857723791526397236422992667259948858815644211642076355254409538306069722345612392012915604981881367144586134958548638622059431200740663401535386954787142318402161407062367658834129067730124799206565784982639002519538994476859475051193413032441802655895182311620992722743521812713033355316618340286163976059545102169473";
    static String d = "65537";

    public static void main(String[] args) throws Exception {
        
        StringBuilder sb = new StringBuilder();
        sb.append("AL:3,AM:0,AA:gg,AJ:");
        sb.append("00-0C-29-50-21-D5,");
        sb.append(
                "AD:A6V5,AG:9999,AR:9999,AC:9999,AF:A6V5-1,AE:V8.0,AB:2021-01-01,");
        sb.append("AI:2222-02-02,AH:2222-02-02,BA:base64Z2c=,news:1,addressbook:1,");
        sb.append("v_culture:1,officeOcx:1,doc:1,v_mbo:1,webmail:1,lbs:1,bulletin:1,Mx:<sl><l><key>Mx1</key><value>0</value></l><l><key>Mx2</key><value>5</value></l><l><key>Mx4</key><value>2222-02-02</value></l></sl>");
        makelic(sb.toString());
    }

    public static void makelic(String lic) throws Exception {

        java.security.Key privkey = getPrivateKey(e, n);
        StringBuilder sb = new StringBuilder();
        java.security.KeyPair kp = generateKeyPair(2048);
        String dog = Base64Encode(encode(kp.getPrivate(), lic.getBytes()));
        java.security.interfaces.RSAPublicKey puk = (java.security.interfaces.RSAPublicKey) kp.getPublic();

        sb.append("dogMsg=");
        sb.append(dog);
        sb.append("\nmodules=");
        sb.append(puk.getModulus().toString());
        sb.append("0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000");
        sb.append("\nproductLine=A6V5\ndogNo=www.seeyom.com");
        System.out.println(Base64Encode(encode(privkey, sb.toString().getBytes())));

    }
    public static String Base64Encode(byte[] data){
        return new sun.misc.BASE64Encoder().encodeBuffer(data).replaceAll("\r\n", "");
    }
    public static java.security.KeyPair generateKeyPair(int keySize) {
        try {
            java.security.KeyPairGenerator keyPairGen = java.security.KeyPairGenerator.getInstance("RSA");
            keyPairGen.initialize(keySize, new java.security.SecureRandom());
            return keyPairGen.genKeyPair();
        } catch (java.security.NoSuchAlgorithmException nsae) {
            return null;
        }
    }

    public static java.security.Key getPrivateKey(java.lang.String privatekeyStr, java.lang.String moduleStr) {
        try {
            return (java.security.interfaces.RSAPrivateKey) java.security.KeyFactory.getInstance("RSA")
                    .generatePrivate(new java.security.spec.RSAPrivateKeySpec(new java.math.BigInteger(moduleStr),
                            new java.math.BigInteger(privatekeyStr)));
        } catch (java.lang.Exception e) {
            e.printStackTrace();
            return null;
        }
    }
    public static byte[] encode(java.security.Key key, byte[] data) throws Exception {
        int blocksize = 245;
        java.io.ByteArrayOutputStream out = new java.io.ByteArrayOutputStream(data.length);
        try {
            javax.crypto.Cipher cipher = javax.crypto.Cipher.getInstance("RSA");
            cipher.init(1, key);
            int position = 0;
            int length = data.length;
            boolean more = true;
            while (more) {
                if (position + blocksize <= length) {
                    out.write(cipher.doFinal(data, position, blocksize));
                    position += blocksize;
                } else {
                    more = false;
                }
            }
            if (position < length) {
                out.write(cipher.doFinal(data, position, length - position));
            }
            return out.toByteArray();
        } catch (java.lang.Exception e) {
            throw e;
        }
    }

}