nodejs自带加密模块md5加密：

var crypto = require('crypto');

function cryptoMD5(content){
    var md5 = crypto.createHash('md5');
    md5.update(content);
    return md5.digest('hex');
}

exports.cryptoMD5 = cryptoMD5;

批量给sql server数据库中的密码字段MD5加密：

update tableName
set password=right(sys.fn_VarBinToHexStr(hashbytes('MD5',CONVERT(varchar(64), password))),32)
where password is not null