Hashing Text using sha1 in javascript

Question

Can anyone tell me how to do this?

I have done hashing using sha1 in c#, but how to achieve the same hashing functionality using javascript?

I would like to learn this using different techniques. thanks!

Edit: I have tried following link: http://coursesweb.net/javascript/sha1-encrypt-data_cs

I didn't get the reason, why do this differs with result of SHA1CryptoServiceProvider of c# & example in mentioned link

Here is the code, That I have tried : 1. example mentioned in the above link(javascript) 2.

 <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
 <asp:Button ID="Button1" runat="server" Text="Button_ServerSide" onclick="Button1_Click" />

code behind:

    using System;
    using System.Collections;
    using System.Configuration;
    using System.Data;
    using System.Linq;
    using System.Web;
    using System.Web.Security;
    using System.Web.UI;
    using System.Web.UI.HtmlControls;
    using System.Web.UI.WebControls;
    using System.Web.UI.WebControls.WebParts;
    using System.Xml.Linq;
    using System.Security.Cryptography;
    using System.Text;

   public partial class Default2 : System.Web.UI.Page
   {
   protected void Page_Load(object sender, EventArgs e)
   {

   } 
   protected void Button1_Click(object sender, EventArgs e)
   {
    string strText = String.Empty;
    strText = TextBox1.Text;
    //SHA512CryptoServiceProvider encrypt = new SHA512CryptoServiceProvider();
    SHA1CryptoServiceProvider encrypt = new SHA1CryptoServiceProvider();
    byte[] encryptText = encrypt.ComputeHash(Encoding.Default.GetBytes(strText));

    TextBox1.Text = "";


    foreach (byte tempData in strText)
    {
        TextBox1.Text = TextBox1.Text + "x";

    }
    string str = System.Text.Encoding.Default.GetString(encryptText);
    Response.Write("Entered Text: " + strText + "  Encrypted Text Length: " + encryptText.Length + "    enpwd: " + strText);
    Response.Write("           encryptText: " + encryptText.Equals(strcrypt.Value));
    Response.Write("           encryptText STR: " + str);


    //ProtectedData.Protect();
}

}

I have tried SHA1CryptoServiceProvider while using c#, but I'm not aware how to make it work using javascript. — user1746468
– user1746468, Commented Feb 21, 2013 at 12:29

Community · Accepted Answer · 2017-05-23 10:24:51Z

2

Javascript does not have any built in hashing functions so you'll have to use an external library.

There is also another question on StackOverflow about this that has more information.

edited May 23, 2017 at 10:24

CommunityBot

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answered Feb 21, 2013 at 12:29

Chris

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Comments

Jefferson Henrique C. Soares · Accepted Answer · 2013-02-21 12:26:28Z

1

You can try this links to solve your problem:

http://caligatio.github.com/jsSHA/

http://www.movable-type.co.uk/scripts/sha1.html

answered Feb 21, 2013 at 12:26

Jefferson Henrique C. Soares

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Comments

Zibri · Accepted Answer · 2021-09-08 05:10:51Z

sha1 = function(r) {
    var t = function() {
        function r() {
            e[0] = 1732584193, e[1] = 4023233417, e[2] = 2562383102, e[3] = 271733878, e[4] = 3285377520, 
            s = c = 0;
        }
        function t(r) {
            var t, n, o, f, a, u, c, s;
            for (t = i, n = 0; 64 > n; n += 4) t[n / 4] = r[n] << 24 | r[n + 1] << 16 | r[n + 2] << 8 | r[n + 3];
            for (n = 16; 80 > n; n++) r = t[n - 3] ^ t[n - 8] ^ t[n - 14] ^ t[n - 16], t[n] = 4294967295 & (r << 1 | r >>> 31);
            for (r = e[0], o = e[1], f = e[2], a = e[3], u = e[4], n = 0; 80 > n; n++) 40 > n ? 20 > n ? (c = a ^ o & (f ^ a), 
            s = 1518500249) : (c = o ^ f ^ a, s = 1859775393) : 60 > n ? (c = o & f | a & (o | f), 
            s = 2400959708) : (c = o ^ f ^ a, s = 3395469782), c = (4294967295 & (r << 5 | r >>> 27)) + c + u + s + t[n] & 4294967295, 
            u = a, a = f, f = 4294967295 & (o << 30 | o >>> 2), o = r, r = c;
            e[0] = e[0] + r & 4294967295, e[1] = e[1] + o & 4294967295, e[2] = e[2] + f & 4294967295, 
            e[3] = e[3] + a & 4294967295, e[4] = e[4] + u & 4294967295;
        }
        function n(r, n) {
            if ("string" == typeof r) {
                for (var o = [], e = 0, i = (r = unescape(encodeURIComponent(r))).length; e < i; ++e) o.push(r.charCodeAt(e));
                r = o;
            }
            if (n || (n = r.length), o = 0, 0 == c) for (;o + 64 < n; ) t(r.slice(o, o + 64)), 
            o += 64, s += 64;
            for (;o < n; ) if (f[c++] = r[o++], s++, 64 == c) for (c = 0, t(f); o + 64 < n; ) t(r.slice(o, o + 64)), 
            o += 64, s += 64;
        }
        function o() {
            var r, o, i = [], u = 8 * s;
            for (n(a, 56 > c ? 56 - c : 64 - (c - 56)), r = 63; 56 <= r; r--) f[r] = 255 & u, 
            u >>>= 8;
            for (t(f), r = u = 0; 5 > r; r++) for (o = 24; 0 <= o; o -= 8) i[u++] = e[r] >> o & 255;
            return i;
        }
        var e, f, i, a, u, c, s;
        for (e = [], f = [], i = [], a = [ 128 ], u = 1; 64 > u; ++u) a[u] = 0;
        return r(), {
            reset: r,
            update: n,
            digest: o,
            digestString: function() {
                for (var r = o(), t = "", n = 0; n < r.length; n++) t += "0123456789ABCDEF".charAt(Math.floor(r[n] / 16)) + "0123456789ABCDEF".charAt(r[n] % 16);
                return t;
            }
        };
    }();
    return t.update(r), t.digestString().toLowerCase();
};

console.log(sha1("admin"));

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