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1// Small utility to recover forgotten Tizen certificate password.
2// If you still have the Eclipse IDE remembering the password, you
3// can find it in encrypted form in a file:
4// <WORKSPACE>/.metadata/.plugins/org.tizen.common.sign/profiles.xml
5// Then simply paste the password from that file to this utility as
6// a command line parameter.
7
8// Code is mostly copied from Tizen IDE source code.
9package fi.ustun.tizendecipher;
10
11import javax.crypto.Cipher;
12import javax.crypto.SecretKey;
13import javax.crypto.SecretKeyFactory;
14import javax.crypto.spec.DESedeKeySpec;
15
16public class Main {
17    private final static char[] ALPHABET = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/".toCharArray();
18
19    private static int[]  toInt   = new int[128];
20
21    static {
22        for(int i=0; i< ALPHABET.length; i++){
23            toInt[ALPHABET[i]]= i;
24        }
25    }
26
27    public static byte[] base64Decode(String s){
28        int delta = s.endsWith( "==" ) ? 2 : s.endsWith( "=" ) ? 1 : 0;
29        byte[] buffer = new byte[s.length()*3/4 - delta];
30        int mask = 0xFF;
31        int index = 0;
32        for(int i=0; i< s.length(); i+=4){
33            int c0 = toInt[s.charAt( i )];
34            int c1 = toInt[s.charAt( i + 1)];
35            buffer[index++]= (byte)(((c0 << 2) | (c1 >> 4)) & mask);
36            if(index >= buffer.length){
37                return buffer;
38            }
39            int c2 = toInt[s.charAt( i + 2)];
40            buffer[index++]= (byte)(((c1 << 4) | (c2 >> 2)) & mask);
41            if(index >= buffer.length){
42                return buffer;
43            }
44            int c3 = toInt[s.charAt( i + 3 )];
45            buffer[index++]= (byte)(((c2 << 6) | c3) & mask);
46        }
47        return buffer;
48    }
49
50    private static final String password = "KYANINYLhijklmnopqrstuvwx";
51    private static SecretKey SECRETE_KEY;
52    private static Cipher DES_CIPHER;
53    private static final String ALGORITHM = "DESede";
54
55    static {
56        try {
57            byte key[] = password.getBytes();
58            DESedeKeySpec desKeySpec = new DESedeKeySpec(key);
59            SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(ALGORITHM);
60            SECRETE_KEY = keyFactory.generateSecret(desKeySpec);
61
62            DES_CIPHER = Cipher.getInstance(ALGORITHM + "/ECB/PKCS5Padding");
63        } catch (Throwable t) {
64            System.out.println("Exception occurred while creating secret key" + t);
65        }
66    }
67
68    private static byte[] decryptByDES(byte[] bytes) throws Exception{
69        DES_CIPHER.init(Cipher.DECRYPT_MODE, SECRETE_KEY);
70
71        return DES_CIPHER.doFinal(bytes);
72    }
73
74    public static String getDecryptedString(String s) throws Exception {
75        return new String(decryptByDES(base64Decode(s)));
76    }
77
78    public static void main(String[] args) {
79        if (args.length < 1)
80            System.exit(-1);
81
82        try {
83            System.out.println(getDecryptedString(args[0]));
84        } catch (Exception e) {
85
86        }
87    }
88}