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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.io.*;
  6. import java.io.ByteArrayOutputStream;
  7. import java.security.Key;
  8. import java.security.KeyFactory;
  9. import java.security.spec.PKCS8EncodedKeySpec;
  10. import java.security.spec.X509EncodedKeySpec;
  11. import javax.crypto.Cipher;
  12.  
  13.  
  14.  
  15. class Ideone
  16. {
  17. 	public static void main (String[] args) throws java.lang.Exception
  18. 	{
  19. 		// your code goes here
  20. 		System.out.println("start..");
  21.  
  22. 	}
  23. 	 public static byte[] decode(byte[] bArr, String str) {
  24.         Key generatePrivate = KeyFactory.getInstance("RSA").generatePrivate(new PKCS8EncodedKeySpec(C1442b.m7299a(str)));
  25.         Cipher instance = Cipher.getInstance("RSA/ECB/PKCS1Padding");
  26.         instance.init(2, generatePrivate);
  27.         return m6587a(bArr, instance, 128);
  28.  
  29.     } 
  30.         private static byte[] m6587a(byte[] bArr, Cipher cipher, int i) {
  31.         ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
  32.         int length = bArr.length;
  33.         int i2 = 0;
  34.         while (i2 < length) {
  35.             int min = Math.min(i, length - i2);
  36.             byte[] doFinal = cipher.doFinal(bArr, i2, min);
  37.             byteArrayOutputStream.write(doFinal, 0, doFinal.length);
  38.             i2 += min;
  39.         }
  40.         byte[] toByteArray = byteArrayOutputStream.toByteArray();
  41.         byteArrayOutputStream.close();
  42.         return toByteArray;
  43.     }
  44.  
  45.     public static byte[] m6588b(byte[] bArr, String str) {
  46.         Key generatePublic = KeyFactory.getInstance("RSA").generatePublic(new X509EncodedKeySpec(C1442b.m7299a(str)));
  47.         Cipher instance = Cipher.getInstance("RSA/ECB/PKCS1Padding");
  48.         instance.init(1, generatePublic);
  49.         return m6587a(bArr, instance, 117);
  50.     }
  51.  
  52.  
  53.  
  54.  
  55. }
  56.  
  57.  
  58.  
  59.  
  60.  
  61. class C1442b {
  62.     private static final byte[] f8981a = new byte[128];
  63.     private static final char[] f8982b = new char[64];
  64.  
  65.     static {
  66.         int i;
  67.         int i2 = 0;
  68.         for (i = 0; i <128; i++) {
  69.             f8981a[i] = (byte) -1;
  70.         }
  71.         for (i = 90; i >= 65; i--) {
  72.             f8981a[i] = (byte) (i - 65);
  73.         }
  74.         for (i = 122; i >= 97; i--) {
  75.             f8981a[i] = (byte) ((i - 97) + 26);
  76.         }
  77.         for (i = 57; i >= 48; i--) {
  78.             f8981a[i] = (byte) ((i - 48) + 52);
  79.         }
  80.         f8981a[43] = (byte) 62;
  81.         f8981a[47] = (byte) 63;
  82.         for (i = 0; i <= 25; i++) {
  83.             f8982b[i] = (char) (i + 65);
  84.         }
  85.         int i3 = 26;
  86.         i = 0;
  87.         while (i3 <= 51) {
  88.             f8982b[i3] = (char) (i + 97);
  89.             i3++;
  90.             i++;
  91.         }
  92.         i = 52;
  93.         while (i <= 61) {
  94.             f8982b[i] = (char) (i2 + 48);
  95.             i++;
  96.             i2++;
  97.         }
  98.         f8982b[62] = '+';
  99.         f8982b[63] = '/';
  100.     }
  101.  
  102.     public static String m7297a(byte[] bArr) {
  103.         int i = 0;
  104.         if (bArr == null) {
  105.             return null;
  106.         }
  107.         int length = bArr.length * 8;
  108.         if (length == 0) {
  109.             return "";
  110.         }
  111.         int i2 = length % 24;
  112.         int i3 = length / 24;
  113.         char[] cArr = new char[((i2 != 0 ? i3 + 1 : i3) * 4)];
  114.         int i4 = 0;
  115.         int i5 = 0;
  116.         while (i4 < i3) {
  117.             length = i + 1;
  118.             byte b = bArr[i];
  119.             int i6 = length + 1;
  120.             byte b2 = bArr[length];
  121.             int i7 = i6 + 1;
  122.             byte b3 = bArr[i6];
  123.             byte b4 = (byte) (b2 & 15);
  124.             byte b5 = (byte) (b & 3);
  125.             if ((b & -128) == 0) {
  126.                 i6 = (byte) (b >> 2);
  127.             } else {
  128.                 byte b6 = (byte) ((b >> 2) ^ 192);
  129.             }
  130.             if ((b2 & -128) == 0) {
  131.                 i = (byte) (b2 >> 4);
  132.             } else {
  133.                 b = (byte) ((b2 >> 4) ^ 240);
  134.             }
  135.             length = (b3 & -128) == 0 ? (byte) (b3 >> 6) : (byte) ((b3 >> 6) ^ 252);
  136.             int i8 = i5 + 1;
  137.             cArr[i5] = f8982b[i6];
  138.             i6 = i8 + 1;
  139.             cArr[i8] = f8982b[i | (b5 << 4)];
  140.             i5 = i6 + 1;
  141.             cArr[i6] = f8982b[length | (b4 << 2)];
  142.             i = i5 + 1;
  143.             cArr[i5] = f8982b[b3 & 63];
  144.             i4++;
  145.             i5 = i;
  146.             i = i7;
  147.         }
  148.         byte b7;
  149.         byte b8;
  150.         byte b19;
  151.         if (i2 == 8) {
  152.             b7 = bArr[i];
  153.             b8 = (byte) (b7 & 3);
  154.             i = i5 + 1;
  155.             cArr[i5] = f8982b[(b7 & -128) == 0 ? (byte) (b7 >> 2) : (byte) ((b7 >> 2) ^ 192)];
  156.             length = i + 1;
  157.             cArr[i] = f8982b[b8 << 4];
  158.             i3 = length + 1;
  159.             cArr[length] = '=';
  160.             cArr[i3] = '=';
  161.         } else if (i2 == 16) {
  162.             b7 = bArr[i];
  163.             b19 = bArr[i + 1];
  164.             byte b6 = (byte) (b19 & 15);
  165.             byte b9 = (byte) (b7 & 3);
  166.             if ((b7 & -128) == 0) {
  167.                 i3 = (byte) (b7 >> 2);
  168.             } else {
  169.                 b8 = (byte) ((b7 >> 2) ^ 192);
  170.             }
  171.             length = (b19 & -128) == 0 ? (byte) (b19 >> 4) : (byte) ((b19 >> 4) ^ 240);
  172.             i = i5 + 1;
  173.             cArr[i5] = f8982b[i3];
  174.             i3 = i + 1;
  175.             cArr[i] = f8982b[length | (b9 << 4)];
  176.             length = i3 + 1;
  177.             cArr[i3] = f8982b[b6 << 2];
  178.             cArr[length] = '=';
  179.         }
  180.         return new String(cArr);
  181.     }
  182.  
  183.     private static boolean m7298a(char c) {
  184.         return c == '=';
  185.     }
  186.  
  187.     public static byte[] m7299a(String str) {
  188.         if (str == null) {
  189.             return null;
  190.         }
  191.         int i;
  192.         int length;
  193.         int i2;
  194.         int i3;
  195.         char[] toCharArray = str.toCharArray();
  196.         if (toCharArray == null) {
  197.             i = 0;
  198.         } else {
  199.             length = toCharArray.length;
  200.             i2 = 0;
  201.             i = 0;
  202.             while (i2 < length) {
  203.                 char c = toCharArray[i2];
  204.                 i3 = (c == ' ' || c == '\r' || c == '\n' || c == '\t') ? 1 : 0;
  205.                 if (i3 == 0) {
  206.                     i3 = i + 1;
  207.                     toCharArray[i] = toCharArray[i2];
  208.                 } else {
  209.                     i3 = i;
  210.                 }
  211.                 i2++;
  212.                 i = i3;
  213.             }
  214.         }
  215.         if (i % 4 != 0) {
  216.             return null;
  217.         }
  218.         int i4 = i / 4;
  219.         if (i4 == 0) {
  220.             return new byte[0];
  221.         }
  222.         char c2;
  223.         byte[] aaa = new byte[(i4 * 3)];
  224.         i = 0;
  225.         i2 = 0;
  226.         length = 0;
  227.         while (length < i4 - 1) {
  228.             int i5 = i + 1;
  229.             char c3 = toCharArray[i];
  230.             if (C1442b.m7300b(c3)) {
  231.                 i = i5 + 1;
  232.                 c2 = toCharArray[i5];
  233.                 if (C1442b.m7300b(c2)) {
  234.                     int i6 = i + 1;
  235.                     char c4 = toCharArray[i];
  236.                     if (C1442b.m7300b(c4)) {
  237.                         i = i6 + 1;
  238.                         char c5 = toCharArray[i6];
  239.                         if (C1442b.m7300b(c5)) {
  240.                             byte b = f8981a[c3];
  241.                             byte b2 = f8981a[c2];
  242.                             byte b3 = f8981a[c4];
  243.                             byte b4 = f8981a[c5];
  244.                             int i7 = i2 + 1;
  245.                             aaa[i2] = (byte) ((b << 2) | (b2 >> 4));
  246.                             int i8 = i7 + 1;
  247.                             aaa[i7] = (byte) (((b2 & 15) << 4) | ((b3 >> 2) & 15));
  248.                             i2 = i8 + 1;
  249.                             aaa[i8] = (byte) ((b3 << 6) | b4);
  250.                             length++;
  251.                         }
  252.                     }
  253.                 }
  254.             }
  255.             return null;
  256.         }
  257.         i4 = i + 1;
  258.         char c6 = toCharArray[i];
  259.         if (C1442b.m7300b(c6)) {
  260.             int i5 = i4 + 1;
  261.             char c7 = toCharArray[i4];
  262.             if (C1442b.m7300b(c7)) {
  263.                 byte b = f8981a[c6];
  264.                 byte b5 = f8981a[c7];
  265.                 i = i5 + 1;
  266.                 c2 = toCharArray[i5];
  267.                 c6 = toCharArray[i];
  268.                 if (C1442b.m7300b(c2) && C1442b.m7300b(c6)) {
  269.                     byte b6 = f8981a[c2];
  270.                     byte b7 = f8981a[c6];
  271.                     int i9 = i2 + 1;
  272.                     aaa[i2] = (byte) ((b << 2) | (b5 >> 4));
  273.                     i2 = i9 + 1;
  274.                     aaa[i9] = (byte) (((b5 & 15) << 4) | ((b6 >> 2) & 15));
  275.                     aaa[i2] = (byte) (b7 | (b6 << 6));
  276.                     return aaa;
  277.                 } else if (C1442b.m7298a(c2) && C1442b.m7298a(c6)) {
  278.                     if ((b5 & 15) != 0) {
  279.                         return null;
  280.                     }
  281.                    byte[] r1 = new byte[((length * 3) + 1)];
  282.                     System.arraycopy(aaa, 0, r1, 0, length * 3);
  283.                     r1[i2] = (byte) ((b << 2) | (b5 >> 4));
  284.                     return r1;
  285.                 } else if (C1442b.m7298a(c2) || !C1442b.m7298a(c6)) {
  286.                     return null;
  287.                 } else {
  288.                     byte b8 = f8981a[c2];
  289.                     if ((b8 & 3) != 0) {
  290.                         return null;
  291.                     }
  292.                     byte[] r1 = new byte[((length * 3) + 2)];
  293.                     System.arraycopy(aaa, 0, r1, 0, length * 3);
  294.                     i3 = i2 + 1;
  295.                     r1[i2] = (byte) ((b << 2) | (b5 >> 4));
  296.                     r1[i3] = (byte) (((b5 & 15) << 4) | ((b8 >> 2) & 15));
  297.                     return r1;
  298.                 }
  299.             }
  300.         }
  301.         return null;
  302.     }
  303.  
  304.     private static boolean m7300b(char c) {
  305.         return c < '€' && f8981a[c] != (byte) -1;
  306.     }
  307. }
  308.  
  309.  
Compilation error #stdin compilation error #stdout 0s 0KB
comments (?)
stdin 
Standard input is empty
compilation info 
Main.java:24: error: unreported exception NoSuchAlgorithmException; must be caught or declared to be thrown
        Key generatePrivate = KeyFactory.getInstance("RSA").generatePrivate(new PKCS8EncodedKeySpec(C1442b.m7299a(str)));
                                                    ^
Main.java:24: error: unreported exception InvalidKeySpecException; must be caught or declared to be thrown
        Key generatePrivate = KeyFactory.getInstance("RSA").generatePrivate(new PKCS8EncodedKeySpec(C1442b.m7299a(str)));
                                                                           ^
Main.java:25: error: unreported exception NoSuchAlgorithmException; must be caught or declared to be thrown
        Cipher instance = Cipher.getInstance("RSA/ECB/PKCS1Padding");
                                            ^
Main.java:26: error: unreported exception InvalidKeyException; must be caught or declared to be thrown
        instance.init(2, generatePrivate);
                     ^
Main.java:36: error: unreported exception IllegalBlockSizeException; must be caught or declared to be thrown
            byte[] doFinal = cipher.doFinal(bArr, i2, min);
                                           ^
Main.java:41: error: unreported exception IOException; must be caught or declared to be thrown
        byteArrayOutputStream.close();
                                   ^
Main.java:46: error: unreported exception NoSuchAlgorithmException; must be caught or declared to be thrown
        Key generatePublic = KeyFactory.getInstance("RSA").generatePublic(new X509EncodedKeySpec(C1442b.m7299a(str)));
                                                   ^
Main.java:46: error: unreported exception InvalidKeySpecException; must be caught or declared to be thrown
        Key generatePublic = KeyFactory.getInstance("RSA").generatePublic(new X509EncodedKeySpec(C1442b.m7299a(str)));
                                                                         ^
Main.java:47: error: unreported exception NoSuchAlgorithmException; must be caught or declared to be thrown
        Cipher instance = Cipher.getInstance("RSA/ECB/PKCS1Padding");
                                            ^
Main.java:48: error: unreported exception InvalidKeyException; must be caught or declared to be thrown
        instance.init(1, generatePublic);
                     ^
10 errors
stdout 
Standard output is empty
https://ideone.com/QkXIez
language:
Java (HotSpot 12)
created:
7 years ago
visibility:
public

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