code: public static char[] encode(final byte[] input, final int iLen) {
  		int oDataLen = (iLen * 4 + 2) / 3; // output length without padding
  		int oLen = ((iLen + 2) / 3) * 4; // output length including padding
  		char[] out = new char[oLen];
  		int ip = 0;
  		int op = 0;
  
  		while (ip < iLen) {
  			int i0 = input[ip++] & 0xff;
  			int i1 = ip < iLen ? input[ip++] & 0xff : 0;
  			int i2 = ip < iLen ? input[ip++] & 0xff : 0;
  			int o0 = i0 >>> 2;
  			int o1 = ((i0 & 3) << 4) | (i1 >>> 4);
  			int o2 = ((i1 & 0xf) << 2) | (i2 >>> 6);
  			int o3 = i2 & 0x3F;
  			out[op++] = MAP1[o0];
  			out[op++] = MAP1[o1];
  			out[op] = op < oDataLen ? MAP1[o2] : '=';
  			op++;
  			out[op] = op < oDataLen ? MAP1[o3] : '=';
  			op++;
  		}
  
  		return out;
  	}
docs: Encodes a byte array into Base64 format. No blanks or line breaks are inserted.
  
  @param input an array containing the data bytes to be encoded.
  @param iLen number of bytes to process in <code>in</code>.
  @return A character array with the Base64 encoded data.