diff --git a/src/com/rjconsultores/ventaboletos/utilerias/spring/security/Base64.java b/src/com/rjconsultores/ventaboletos/utilerias/spring/security/Base64.java
index 4294bd6aa..f913191c8 100644
--- a/src/com/rjconsultores/ventaboletos/utilerias/spring/security/Base64.java
+++ b/src/com/rjconsultores/ventaboletos/utilerias/spring/security/Base64.java
@@ -7,241 +7,197 @@
 package com.rjconsultores.ventaboletos.utilerias.spring.security;
 
 /**
- * Static methods for translating Base64 encoded strings to byte arrays
- * and vice-versa.
- *
- * @author  Josh Bloch
+ * Static methods for translating Base64 encoded strings to byte arrays and vice-versa.
+ * 
+ * @author Josh Bloch
  * @version 1.3, 12/03/01
- * @see     Preferences
- * @since   1.4
+ * @see Preferences
+ * @since 1.4
  */
 public class Base64 {
 
-    /**
-     * Translates the specified byte array into a Base64 string as per
-     * Preferences.put(byte[]).
-     */
-    public static String byteArrayToBase64(byte[] a) {
-        return byteArrayToBase64(a, false);
-    }
+	/**
+	 * Translates the specified byte array into a Base64 string as per Preferences.put(byte[]).
+	 */
+	public static String byteArrayToBase64(byte[] a) {
+		return byteArrayToBase64(a, false);
+	}
 
-    /**
-     * Translates the specified byte array into an "aternate representation"
-     * Base64 string.  This non-standard variant uses an alphabet that does
-     * not contain the uppercase alphabetic characters, which makes it
-     * suitable for use in situations where case-folding occurs.
-     */
-    public static String byteArrayToAltBase64(byte[] a) {
-        return byteArrayToBase64(a, true);
-    }
+	/**
+	 * Translates the specified byte array into an "aternate representation" Base64 string. This non-standard variant uses an alphabet that does not contain the uppercase alphabetic characters, which makes it suitable for use in situations where case-folding occurs.
+	 */
+	public static String byteArrayToAltBase64(byte[] a) {
+		return byteArrayToBase64(a, true);
+	}
 
-    private static String byteArrayToBase64(byte[] a, boolean alternate) {
-        int aLen = a.length;
-        int numFullGroups = aLen / 3;
-        int numBytesInPartialGroup = aLen - 3 * numFullGroups;
-        int resultLen = 4 * ((aLen + 2) / 3);
-        StringBuffer result = new StringBuffer(resultLen);
-        char[] intToAlpha = (alternate ? intToAltBase64 : intToBase64);
+	private static String byteArrayToBase64(byte[] a, boolean alternate) {
+		int aLen = a.length;
+		int numFullGroups = aLen / 3;
+		int numBytesInPartialGroup = aLen - 3 * numFullGroups;
+		int resultLen = 4 * ((aLen + 2) / 3);
+		StringBuffer result = new StringBuffer(resultLen);
+		char[] intToAlpha = (alternate ? intToAltBase64 : intToBase64);
 
-        // Translate all full groups from byte array elements to Base64
-        int inCursor = 0;
-        for (int i = 0; i < numFullGroups; i++) {
-            int byte0 = a[inCursor++] & 0xff;
-            int byte1 = a[inCursor++] & 0xff;
-            int byte2 = a[inCursor++] & 0xff;
-            result.append(intToAlpha[byte0 >> 2]);
-            result.append(intToAlpha[(byte0 << 4) & 0x3f | (byte1 >> 4)]);
-            result.append(intToAlpha[(byte1 << 2) & 0x3f | (byte2 >> 6)]);
-            result.append(intToAlpha[byte2 & 0x3f]);
-        }
+		// Translate all full groups from byte array elements to Base64
+		int inCursor = 0;
+		for (int i = 0; i < numFullGroups; i++) {
+			int byte0 = a[inCursor++] & 0xff;
+			int byte1 = a[inCursor++] & 0xff;
+			int byte2 = a[inCursor++] & 0xff;
+			result.append(intToAlpha[byte0 >> 2]);
+			result.append(intToAlpha[(byte0 << 4) & 0x3f | (byte1 >> 4)]);
+			result.append(intToAlpha[(byte1 << 2) & 0x3f | (byte2 >> 6)]);
+			result.append(intToAlpha[byte2 & 0x3f]);
+		}
 
-        // Translate partial group if present
-        if (numBytesInPartialGroup != 0) {
-            int byte0 = a[inCursor++] & 0xff;
-            result.append(intToAlpha[byte0 >> 2]);
-            if (numBytesInPartialGroup == 1) {
-                result.append(intToAlpha[(byte0 << 4) & 0x3f]);
-                result.append("==");
-            } else {
-                // assert numBytesInPartialGroup == 2;
-                int byte1 = a[inCursor++] & 0xff;
-                result.append(intToAlpha[(byte0 << 4) & 0x3f | (byte1 >> 4)]);
-                result.append(intToAlpha[(byte1 << 2) & 0x3f]);
-                result.append('=');
-            }
-        }
-        // assert inCursor == a.length;
-        // assert result.length() == resultLen;
-        return result.toString();
-    }
-    /**
-     * This array is a lookup table that translates 6-bit positive integer
-     * index values into their "Base64 Alphabet" equivalents as specified 
-     * in Table 1 of RFC 2045.
-     */
-    private static final char intToBase64[] = {
-        'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M',
-        'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z',
-        'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm',
-        'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
-        '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '+', '/'
-    };
-    /**
-     * This array is a lookup table that translates 6-bit positive integer
-     * index values into their "Alternate Base64 Alphabet" equivalents.
-     * This is NOT the real Base64 Alphabet as per in Table 1 of RFC 2045.
-     * This alternate alphabet does not use the capital letters.  It is
-     * designed for use in environments where "case folding" occurs.
-     */
-    private static final char intToAltBase64[] = {
-        '!', '"', '#', '$', '%', '&', '\'', '(', ')', ',', '-', '.', ':',
-        ';', '<', '>', '@', '[', ']', '^', '`', '_', '{', '|', '}', '~',
-        'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm',
-        'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
-        '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '+', '?'
-    };
+		// Translate partial group if present
+		if (numBytesInPartialGroup != 0) {
+			int byte0 = a[inCursor++] & 0xff;
+			result.append(intToAlpha[byte0 >> 2]);
+			if (numBytesInPartialGroup == 1) {
+				result.append(intToAlpha[(byte0 << 4) & 0x3f]);
+				result.append("==");
+			} else {
+				// assert numBytesInPartialGroup == 2;
+				int byte1 = a[inCursor++] & 0xff;
+				result.append(intToAlpha[(byte0 << 4) & 0x3f | (byte1 >> 4)]);
+				result.append(intToAlpha[(byte1 << 2) & 0x3f]);
+				result.append('=');
+			}
+		}
+		// assert inCursor == a.length;
+		// assert result.length() == resultLen;
+		return result.toString();
+	}
 
-    /**
-     * Translates the specified Base64 string (as per Preferences.get(byte[]))
-     * into a byte array.
-     * 
-     * @throw IllegalArgumentException if <tt>s</tt> is not a valid Base64
-     *        string.
-     */
-    public static byte[] base64ToByteArray(String s) {
-        return base64ToByteArray(s, false);
-    }
+	/**
+	 * This array is a lookup table that translates 6-bit positive integer index values into their "Base64 Alphabet" equivalents as specified in Table 1 of RFC 2045.
+	 */
+	private static final char intToBase64[] = {
+			'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M',
+			'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z',
+			'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm',
+			'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
+			'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '+', '/'
+	};
+	/**
+	 * This array is a lookup table that translates 6-bit positive integer index values into their "Alternate Base64 Alphabet" equivalents. This is NOT the real Base64 Alphabet as per in Table 1 of RFC 2045. This alternate alphabet does not use the capital letters. It is designed for use in environments where "case folding" occurs.
+	 */
+	private static final char intToAltBase64[] = {
+			'!', '"', '#', '$', '%', '&', '\'', '(', ')', ',', '-', '.', ':',
+			';', '<', '>', '@', '[', ']', '^', '`', '_', '{', '|', '}', '~',
+			'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm',
+			'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
+			'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '+', '?'
+	};
 
-    /**
-     * Translates the specified "aternate representation" Base64 string
-     * into a byte array.
-     * 
-     * @throw IllegalArgumentException or ArrayOutOfBoundsException
-     *        if <tt>s</tt> is not a valid alternate representation
-     *        Base64 string.
-     */
-    public static byte[] altBase64ToByteArray(String s) {
-        return base64ToByteArray(s, true);
-    }
+	/**
+	 * Translates the specified Base64 string (as per Preferences.get(byte[])) into a byte array.
+	 * 
+	 * @throw IllegalArgumentException if <tt>s</tt> is not a valid Base64 string.
+	 */
+	public static byte[] base64ToByteArray(String s) {
+		return base64ToByteArray(s, false);
+	}
 
-    private static byte[] base64ToByteArray(String s, boolean alternate) {
-        byte[] alphaToInt = (alternate ? altBase64ToInt : base64ToInt);
-        int sLen = s.length();
-        int numGroups = sLen / 4;
-        if (4 * numGroups != sLen) {
-            throw new IllegalArgumentException(
-                    "String length must be a multiple of four.");
-        }
-        int missingBytesInLastGroup = 0;
-        int numFullGroups = numGroups;
-        if (sLen != 0) {
-            if (s.charAt(sLen - 1) == '=') {
-                missingBytesInLastGroup++;
-                numFullGroups--;
-            }
-            if (s.charAt(sLen - 2) == '=') {
-                missingBytesInLastGroup++;
-            }
-        }
-        byte[] result = new byte[3 * numGroups - missingBytesInLastGroup];
+	/**
+	 * Translates the specified "aternate representation" Base64 string into a byte array.
+	 * 
+	 * @throw IllegalArgumentException or ArrayOutOfBoundsException if <tt>s</tt> is not a valid alternate representation Base64 string.
+	 */
+	public static byte[] altBase64ToByteArray(String s) {
+		return base64ToByteArray(s, true);
+	}
 
-        // Translate all full groups from base64 to byte array elements
-        int inCursor = 0, outCursor = 0;
-        for (int i = 0; i < numFullGroups; i++) {
-            int ch0 = base64toInt(s.charAt(inCursor++), alphaToInt);
-            int ch1 = base64toInt(s.charAt(inCursor++), alphaToInt);
-            int ch2 = base64toInt(s.charAt(inCursor++), alphaToInt);
-            int ch3 = base64toInt(s.charAt(inCursor++), alphaToInt);
-            result[outCursor++] = (byte) ((ch0 << 2) | (ch1 >> 4));
-            result[outCursor++] = (byte) ((ch1 << 4) | (ch2 >> 2));
-            result[outCursor++] = (byte) ((ch2 << 6) | ch3);
-        }
+	private static byte[] base64ToByteArray(String s, boolean alternate) {
+		byte[] alphaToInt = (alternate ? altBase64ToInt : base64ToInt);
+		int sLen = s.length();
+		int numGroups = sLen / 4;
+		if (4 * numGroups != sLen) {
+			throw new IllegalArgumentException(
+					"String length must be a multiple of four.");
+		}
+		int missingBytesInLastGroup = 0;
+		int numFullGroups = numGroups;
+		if (sLen != 0) {
+			if (s.charAt(sLen - 1) == '=') {
+				missingBytesInLastGroup++;
+				numFullGroups--;
+			}
+			if (s.charAt(sLen - 2) == '=') {
+				missingBytesInLastGroup++;
+			}
+		}
+		byte[] result = new byte[3 * numGroups - missingBytesInLastGroup];
 
-        // Translate partial group, if present
-        if (missingBytesInLastGroup != 0) {
-            int ch0 = base64toInt(s.charAt(inCursor++), alphaToInt);
-            int ch1 = base64toInt(s.charAt(inCursor++), alphaToInt);
-            result[outCursor++] = (byte) ((ch0 << 2) | (ch1 >> 4));
+		// Translate all full groups from base64 to byte array elements
+		int inCursor = 0, outCursor = 0;
+		for (int i = 0; i < numFullGroups; i++) {
+			int ch0 = base64toInt(s.charAt(inCursor++), alphaToInt);
+			int ch1 = base64toInt(s.charAt(inCursor++), alphaToInt);
+			int ch2 = base64toInt(s.charAt(inCursor++), alphaToInt);
+			int ch3 = base64toInt(s.charAt(inCursor++), alphaToInt);
+			result[outCursor++] = (byte) ((ch0 << 2) | (ch1 >> 4));
+			result[outCursor++] = (byte) ((ch1 << 4) | (ch2 >> 2));
+			result[outCursor++] = (byte) ((ch2 << 6) | ch3);
+		}
 
-            if (missingBytesInLastGroup == 1) {
-                int ch2 = base64toInt(s.charAt(inCursor++), alphaToInt);
-                result[outCursor++] = (byte) ((ch1 << 4) | (ch2 >> 2));
-            }
-        }
-        // assert inCursor == s.length()-missingBytesInLastGroup;
-        // assert outCursor == result.length;
-        return result;
-    }
+		// Translate partial group, if present
+		if (missingBytesInLastGroup != 0) {
+			int ch0 = base64toInt(s.charAt(inCursor++), alphaToInt);
+			int ch1 = base64toInt(s.charAt(inCursor++), alphaToInt);
+			result[outCursor++] = (byte) ((ch0 << 2) | (ch1 >> 4));
 
-    /**
-     * Translates the specified character, which is assumed to be in the
-     * "Base 64 Alphabet" into its equivalent 6-bit positive integer.
-     *
-     * @throw IllegalArgumentException or ArrayOutOfBoundsException if
-     *        c is not in the Base64 Alphabet.
-     */
-    private static int base64toInt(char c, byte[] alphaToInt) {
-        int result = alphaToInt[c];
-        if (result < 0) {
-            throw new IllegalArgumentException("Illegal character " + c);
-        }
-        return result;
-    }
-    /**
-     * This array is a lookup table that translates unicode characters
-     * drawn from the "Base64 Alphabet" (as specified in Table 1 of RFC 2045)
-     * into their 6-bit positive integer equivalents.  Characters that
-     * are not in the Base64 alphabet but fall within the bounds of the
-     * array are translated to -1.
-     */
-    private static final byte base64ToInt[] = {
-        -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-        -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-        -1, -1, -1, -1, -1, -1, -1, -1, -1, 62, -1, -1, -1, 63, 52, 53, 54,
-        55, 56, 57, 58, 59, 60, 61, -1, -1, -1, -1, -1, -1, -1, 0, 1, 2, 3, 4,
-        5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23,
-        24, 25, -1, -1, -1, -1, -1, -1, 26, 27, 28, 29, 30, 31, 32, 33, 34,
-        35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51
-    };
-    /**
-     * This array is the analogue of base64ToInt, but for the nonstandard
-     * variant that avoids the use of uppercase alphabetic characters.
-     */
-    private static final byte altBase64ToInt[] = {
-        -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-        -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, 1,
-        2, 3, 4, 5, 6, 7, 8, -1, 62, 9, 10, 11, -1, 52, 53, 54, 55, 56, 57,
-        58, 59, 60, 61, 12, 13, 14, -1, 15, 63, 16, -1, -1, -1, -1, -1, -1,
-        -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-        -1, -1, -1, 17, -1, 18, 19, 21, 20, 26, 27, 28, 29, 30, 31, 32, 33,
-        34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50,
-        51, 22, 23, 24, 25
-    };
+			if (missingBytesInLastGroup == 1) {
+				int ch2 = base64toInt(s.charAt(inCursor++), alphaToInt);
+				result[outCursor++] = (byte) ((ch1 << 4) | (ch2 >> 2));
+			}
+		}
+		return result;
+	}
 
-    public static void main(String args[]) {
-//        int numRuns  = Integer.parseInt(args[0]);
-//        int numBytes = Integer.parseInt(args[1]);
-//        java.util.Random rnd = new java.util.Random();
-//        for (int i=0; i<numRuns; i++) {
-//            for (int j=0; j<numBytes; j++) {
-//                byte[] arr = new byte[j];
-//                for (int k=0; k<j; k++)
-//                    arr[k] = (byte)rnd.nextInt();
-//
-//                String s = byteArrayToBase64(arr);
-//                byte [] b = base64ToByteArray(s);
-//                if (!java.util.Arrays.equals(arr, b))
-//                    System.out.println("Dismal failure!");
-//
-//                s = byteArrayToAltBase64(arr);
-//                b = altBase64ToByteArray(s);
-//                if (!java.util.Arrays.equals(arr, b))
-//                    System.out.println("Alternate dismal failure!");
-//            }
-//        }
+	/**
+	 * Translates the specified character, which is assumed to be in the "Base 64 Alphabet" into its equivalent 6-bit positive integer.
+	 * 
+	 * @throw IllegalArgumentException or ArrayOutOfBoundsException if c is not in the Base64 Alphabet.
+	 */
+	private static int base64toInt(char c, byte[] alphaToInt) {
+		int result = alphaToInt[c];
+		if (result < 0) {
+			throw new IllegalArgumentException("Illegal character " + c);
+		}
+		return result;
+	}
 
-        Integer i = new Integer(-1);
-        Short s = i.shortValue();
-        System.out.println(s);
-    }
+	/**
+	 * This array is a lookup table that translates unicode characters drawn from the "Base64 Alphabet" (as specified in Table 1 of RFC 2045) into their 6-bit positive integer equivalents. Characters that are not in the Base64 alphabet but fall within the bounds of the array are translated to -1.
+	 */
+	private static final byte base64ToInt[] = {
+			-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+			-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+			-1, -1, -1, -1, -1, -1, -1, -1, -1, 62, -1, -1, -1, 63, 52, 53, 54,
+			55, 56, 57, 58, 59, 60, 61, -1, -1, -1, -1, -1, -1, -1, 0, 1, 2, 3, 4,
+			5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23,
+			24, 25, -1, -1, -1, -1, -1, -1, 26, 27, 28, 29, 30, 31, 32, 33, 34,
+			35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51
+	};
+	/**
+	 * This array is the analogue of base64ToInt, but for the nonstandard variant that avoids the use of uppercase alphabetic characters.
+	 */
+	private static final byte altBase64ToInt[] = {
+			-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+			-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, 1,
+			2, 3, 4, 5, 6, 7, 8, -1, 62, 9, 10, 11, -1, 52, 53, 54, 55, 56, 57,
+			58, 59, 60, 61, 12, 13, 14, -1, 15, 63, 16, -1, -1, -1, -1, -1, -1,
+			-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+			-1, -1, -1, 17, -1, 18, 19, 21, 20, 26, 27, 28, 29, 30, 31, 32, 33,
+			34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50,
+			51, 22, 23, 24, 25
+	};
+
+	public static void main(String args[]) {
+		Integer i = new Integer(-1);
+		Short s = i.shortValue();
+		System.out.println(s);
+	}
 }