新浪微博登入之前JS密碼密碼編譯演算法之C#版

剛看到園子裡面有個人寫新浪微博登入實現，他發的那個是java版，我以前剛好也做過類似的，有一個c#的，貢獻出來吧

 public class SHA1Util    {        private static readonly bool hexcase = false;        private static readonly string b64pad = "=";        private static readonly int chrsz = 8;        //得到字串SHA-1值的方法           public static String hex_sha1(String s)        {            s = (s == null) ? "" : s;            return binb2hex(core_sha1(str2binb(s), s.Length * chrsz));        }        public static String b64_hmac_sha1(String key, String data)        {            return binb2b64(core_hmac_sha1(key, data));        }        public static String b64_sha1(String s)        {            s = (s == null) ? "" : s;            return binb2b64(core_sha1(str2binb(s), s.Length * chrsz));        }        private static String binb2b64(int[] binarray)        {            String tab = "abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz0123456789+/";            String str = "";            binarray = strechbinarray(binarray, binarray.Length * 4);            for (int i = 0; i < binarray.Length * 4; i += 3)            {                int triplet = (((binarray[i >> 2] >> 8 * (3 - i % 4)) & 0xff) << 16)                    | (((binarray[i + 1 >> 2] >> 8 * (3 - (i + 1) % 4)) & 0xff) << 8)                    | ((binarray[i + 2 >> 2] >> 8 * (3 - (i + 2) % 4)) & 0xff);                for (int j = 0; j < 4; j++)                {                    if (i * 8 + j * 6 > binarray.Length * 32)                    {                        str += b64pad;                    }                    else                    {                        str += tab[(triplet >> 6 * (3 - j)) & 0x3f];                    }                }            }            return cleanb64str(str);        }        private static String binb2hex(int[] binarray)        {            String hex_tab = hexcase ? "0123456789abcdef" : "0123456789abcdef";            String str = "";            for (int i = 0; i < binarray.Length * 4; i++)            {                char a = (char)hex_tab[(binarray[i >> 2] >> ((3 - i % 4) * 8 + 4)) & 0xf];                char b = (char)hex_tab[(binarray[i >> 2] >> ((3 - i % 4) * 8)) & 0xf];                str += (a.ToString() + b.ToString());            }            return str;        }        private static String binb2str(int[] bin)        {            String str = "";            int mask = (1 << chrsz) - 1;            for (int i = 0; i < bin.Length * 32; i += chrsz)            {                str += (char)(foo(bin[i >> 5], (24 - i % 32)) & mask);            }            return str;        }        private static int bit_rol(int num, int cnt)        {            return (num << cnt) | foo(num, (32 - cnt));        }        private static String cleanb64str(String str)        {            str = (str == null) ? "" : str;            int len = str.Length;            if (len <= 1)            {                return str;            }            char trailchar = str[len - 1];            String trailstr = "";            for (int i = len - 1; i >= 0 && str[i] == trailchar; i--)            {                trailstr += str[i];            }            return str.Substring(0, str.IndexOf(trailstr));        }        private static int[] complete216(int[] oldbin)        {            if (oldbin.Length >= 16)            {                return oldbin;            }            int[] newbin = new int[16 - oldbin.Length];            for (int i = 0; i < newbin.Length; newbin[i] = 0, i++) ;            return concat(oldbin, newbin);        }        private static int[] concat(int[] oldbin, int[] newbin)        {            int[] retval = new int[oldbin.Length + newbin.Length];            for (int i = 0; i < (oldbin.Length + newbin.Length); i++)            {                if (i < oldbin.Length)                {                    retval[i] = oldbin[i];                }                else                {                    retval[i] = newbin[i - oldbin.Length];                }            }            return retval;        }        private static int[] core_hmac_sha1(String key, String data)        {            key = (key == null) ? "" : key;            data = (data == null) ? "" : data;            int[] bkey = complete216(str2binb(key));            if (bkey.Length > 16)            {                bkey = core_sha1(bkey, key.Length * chrsz);            }            int[] ipad = new int[16];            int[] opad = new int[16];            for (int i = 0; i < 16; ipad[i] = 0, opad[i] = 0, i++) ;            for (int i = 0; i < 16; i++)            {                ipad[i] = bkey[i] ^ 0x36363636;                opad[i] = bkey[i] ^ 0x5c5c5c5c;            }            int[] hash = core_sha1(concat(ipad, str2binb(data)), 512 + data.Length * chrsz);            return core_sha1(concat(opad, hash), 512 + 160);        }        private static int[] core_sha1(int[] x, int len)        {            int size = (len >> 5);            x = strechbinarray(x, size);            x[len >> 5] |= 0x80 << (24 - len % 32);            size = ((len + 64 >> 9) << 4) + 15;            x = strechbinarray(x, size);            x[((len + 64 >> 9) << 4) + 15] = len;            int[] w = new int[80];            int a = 1732584193;            int b = -271733879;            int c = -1732584194;            int d = 271733878;            int e = -1009589776;            for (int i = 0; i < x.Length; i += 16)            {                int olda = a;                int oldb = b;                int oldc = c;                int oldd = d;                int olde = e;                for (int j = 0; j < 80; j++)                {                    if (j < 16)                    {                        w[j] = x[i + j];                    }                    else                    {                        w[j] = rol(w[j - 3] ^ w[j - 8] ^ w[j - 14] ^ w[j - 16], 1);                    }                    int t = safe_add(safe_add(rol(a, 5), sha1_ft(j, b, c, d)), safe_add(safe_add(e, w[j]), sha1_kt(j)));                    e = d;                    d = c;                    c = rol(b, 30);                    b = a;                    a = t;                }                a = safe_add(a, olda);                b = safe_add(b, oldb);                c = safe_add(c, oldc);                d = safe_add(d, oldd);                e = safe_add(e, olde);            }            int[] retval = new int[5];            retval[0] = a;            retval[1] = b;            retval[2] = c;            retval[3] = d;            retval[4] = e;            return retval;        }        private static void dotest()        {            String key = "key";            String data = "data";            Console.WriteLine("hex_sha1(" + data + ")=" + hex_sha1(data));            Console.WriteLine("b64_sha1(" + data + ")=" + b64_sha1(data));            Console.WriteLine("str_sha1(" + data + ")=" + str_sha1(data));            Console.WriteLine("hex_hmac_sha1(" + key + "," + data + ")=" + hex_hmac_sha1(key, data));            Console.WriteLine("b64_hmac_sha1(" + key + "," + data + ")=" + b64_hmac_sha1(key, data));            Console.WriteLine("str_hmac_sha1(" + key + "," + data + ")=" + str_hmac_sha1(key, data));        }        public static String hex_hmac_sha1(String key, String data)        {            return binb2hex(core_hmac_sha1(key, data));        }        private static int rol(int num, int cnt)        {            return (num << cnt) | foo(num, (32 - cnt));        }        private static int safe_add(int x, int y)        {            int lsw = (int)(x & 0xffff) + (int)(y & 0xffff);            int msw = (x >> 16) + (y >> 16) + (lsw >> 16);            return (msw << 16) | (lsw & 0xffff);        }        private static int sha1_ft(int t, int b, int c, int d)        {            if (t < 20)                return (b & c) | ((~b) & d);            if (t < 40)                return b ^ c ^ d;            if (t < 60)                return (b & c) | (b & d) | (c & d);            return b ^ c ^ d;        }        private static int sha1_kt(int t)        {            return (t < 20) ? 1518500249 : (t < 40) ? 1859775393 : (t < 60) ? -1894007588 : -899497514;        }        private static bool sha1_vm_test()        {            return hexcase ? hex_sha1("abc").Equals("a9993e364706816aba3e25717850c26c9cd0d89d") : hex_sha1("abc").Equals("a9993e364706816aba3e25717850c26c9cd0d89d");        }        public static String str_hmac_sha1(String key, String data)        {            return binb2str(core_hmac_sha1(key, data));        }        public static String str_sha1(String s)        {            s = (s == null) ? "" : s;            return binb2str(core_sha1(str2binb(s), s.Length * chrsz));        }        private static int[] str2binb(String str)        {            str = (str == null) ? "" : str;            int[] tmp = new int[str.Length * chrsz];            int mask = (1 << chrsz) - 1;            for (int i = 0; i < str.Length * chrsz; i += chrsz)            {                tmp[i >> 5] |= ((int)(str[i / chrsz]) & mask) << (24 - i % 32);            }            int len = 0;            for (int i = 0; i < tmp.Length && tmp[i] != 0; i++, len++) ;            int[] bin = new int[len];            for (int i = 0; i < len; i++)            {                bin[i] = tmp[i];            }            return bin;        }        private static int[] strechbinarray(int[] oldbin, int size)        {            int currlen = oldbin.Length;            if (currlen >= size + 1)            {                return oldbin;            }            int[] newbin = new int[size + 1];            for (int i = 0; i < size; newbin[i] = 0, i++) ;            for (int i = 0; i < currlen; i++)            {                newbin[i] = oldbin[i];            }            return newbin;        }        public static int foo(int x, int y)        {            int mask = 0x7fffffff;   //Integer.MAX_VALUE             for (int i = 0; i < y; i++)            {                x >>= 1;                x &= mask;            }            return x;        }    }

 用法：

 private static string hex_sha1(string p)        {            return SHA1Util.hex_sha1(p);        }passwordSha1 = hex_sha1("" + hex_sha1(hex_sha1(regUser.UserPwd)) + servertime + nonce);