Question

我正在使用C＃中的Rijndael256加密和解密方法，但是看起来我的加密方法“正在工作”;我的decrypt方法随机返回一个关于我要解密的IV或数据的错误，声明“Base-64 char数组或字符串的长度无效”。解密将工作一次或两次然后错误。我猜这与随机生成的IV大小或简单的东西有关，但任何指导都会很棒。

    private string decryptData(string encData, string encIV)
    {

        byte[] encKey = ASCIIEncoding.UTF8.GetBytes("pemgail9uzpgzl88");
        string returnValue = Convert.ToBase64String(encKey);

        byte[] myIv = Convert.FromBase64String(encIV);

        byte[] myMessage = ASCIIEncoding.UTF8.GetBytes(encData);

        Rijndael aes = Rijndael.Create();
        aes.KeySize = 256;
        aes.BlockSize = 256;
        aes.IV = myIv;
        aes.Mode = CipherMode.CBC;
        aes.Padding = PaddingMode.PKCS7;
        aes.Key = encKey;

        ICryptoTransform crypto = aes.CreateDecryptor(aes.Key, aes.IV);
        byte[] txt = Convert.FromBase64String(encData);
        byte[] cipherText = crypto.TransformFinalBlock(txt, 0, txt.Length);

        return Encoding.UTF8.GetString(cipherText);
    }

我的解密方法：

    protected void Page_Load(object sender, EventArgs e)
    {
        if (Request.QueryString["data"] != null && Request.QueryString["iv"] != null)
        {
            string test = decryptData(Request.QueryString["data"], Request.QueryString["iv"]);
            Response.Write(test);
        }
        else
        {
            string test = encryptData("BrassMonkey");
            Response.Redirect("Rijindael.aspx?data=" + test);
        }

    }

作为测试，我正在加密数据，将测试页重定向到自身，然后将QueryStrings中的值用于解密方法。

var svg = d3.select("body")
    .append("svg")
    .append("g")

svg.append("g")
    .attr("class", "slices");
svg.append("g")
    .attr("class", "labels");
svg.append("g")
    .attr("class", "lines");

var width = 560,
    height = 450,
    radius = Math.min(width, height) / 2;

var pie = d3.layout.pie()
    .sort(null)
    .value(function(d) {
        return d.value;
    });

var arc = d3.svg.arc()
    .outerRadius(radius * 0.85)
    .innerRadius(radius * 0.83);

var outerArc = d3.svg.arc()
    .innerRadius(radius * 0.9)
    .outerRadius(radius * 0.9);

svg.attr("transform", "translate(" + width / 2 + "," + height / 2 + ")");

var key = function(d){ return d.data.label; };

var color = d3.scale.ordinal()
    .domain(["Lorem ipsum", "dolor sit", "amet", "consectetur", "adipisicing"])
    .range(["#98abc5", "#8a89a6", "#7b6888", "#6b486b", "#a05d56"]);

function randomData (){
    var labels = color.domain();
    return labels.map(function(label){
        return { label: label, value: Math.random() }
    });
}


console.log("randomData()", randomData());
change(randomData());

d3.select(".randomize")
    .on("click", function(){
        change(randomData());
    });


function change(data) {

    /* ------- PIE SLICES -------*/
    var slice = svg.select(".slices").selectAll("path.slice")
        .data(pie(data), key);

    slice.enter()
        .insert("path")
        .style("fill", function(d) { return color(d.data.label); })
        .attr("class", "slice");

    slice       
        .transition().duration(1000)
        .attrTween("d", function(d) {
            this._current = this._current || d;
            var interpolate = d3.interpolate(this._current, d);
            this._current = interpolate(0);
            return function(t) {
                return arc(interpolate(t));
            };
        })

    slice.exit()
        .remove();

};

Rijndael 256在C＃和ASP.net中加密和解密

0 个答案: