The following is the script to convert to Base64
var strEncoded; strEncoded = ""; var arrBytes; try { arrBytes = strInputText.getBytes("UTF-8"); } catch (objException) { arrBytes = strInputText.getBytes(); } var intPaddingCount; intPaddingCount = (3 - (arrBytes.length % 3)) % 3; var bytPadded; bytPadded = new Byte[arrBytes.length + intPaddingCount]; arrBytes = System.arraycopy(arrBytes, 0, bytPadded, 0, arrBytes.length); for ( var i = 0; i < arrBytes.length; i += 3 ) { var strChar; strChar = ((arrBytes[i] & 0xff) << 16) + ((arrBytes[i + 1] & 0xff) << 8) + (arrBytes[i + 2] & 0xff); var strEncoded; strEncoded = strEncoded + strCharactersBase64.charAt((strChar >> 18) & 0x3f) + strCharactersBase64.charAt((strChar >> 12) & 0x3f) + strCharactersBase64.charAt((strChar >> 6) & 0x3f) + strCharactersBase64.charAt(strChar & 0x3f); } var strTextToEncode; strTextToEncode = strEncoded.substring(0, strEncoded.length() - intPaddingCount) + "==".substring(0, intPaddingCount); var strLines; strLines = ""; for ( var i = 0; i < strTextToEncode.length(); i += 76 ) { strLines += strTextToEncode.substring(i, Math.min(strTextToEncode.length(), i + 76)); strLines += "\r\n"; }