// Copyright © 2001 by Neal R. Wagner. All rights reserved.
//   Any use of this code must include a reference to the author.
//
// AESdecrypt: AES decryption
// Print: print arrays of bytes
public class Print {
   private static final int Nb = 4;
   private static String[] dig = {"0","1","2","3","4","5","6","7",
                           "8","9","a","b","c","d","e","f"};

   // hex: print a byte as two hex digits
   public static String hex(byte a) {
      return dig[(a & 0xff) >> 4] + dig[a & 0x0f];
   }

   public static void printArray(String name, byte[] a) {
      System.out.print(name + " ");
      for (int i = 0; i < a.length; i++)
         System.out.print(hex(a[i]) + " ");
      System.out.println();
   }

   public static void printArray(String name, byte[][] s) {
      System.out.print(name + " ");
      for (int c = 0; c < Nb; c++)
         for (int r = 0; r < 4; r++)
            System.out.print(hex(s[r][c]) + " ");
      System.out.println();
   }
}