js实现的Playfair密码 加/解密插件
<script type="text/javascript" src="Playfair.js"></script>
Playfair.getSercretStr(密钥字符串, 明文);
var data = Playfair.getSercretStr('qqxufo', 'Hi Playfair');
console.log(data); //BCJGESQDKN
Playfair.getUnSercretStr(密钥字符串, 密文);
var data = Playfair.getUnSercretStr('qqxufo', 'BCJGESQDKN');
console.log(data);//hiplayfair