SHA - 1

来源：互联网发布：linux怎么c语言编程编辑：程序博客网时间：2024/05/16 07:19
public class SHA1Util {    private static final boolean hexcase = false;    private static final String b64pad = "=";    private static final int chrsz = 8;    // 得到字符串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) <<((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.charAt((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.charAt((binarray[i >> 2] >> ((3 - i % 4) * 8 + 4)) & 0xf);            char b = (char) hex_tab.charAt((binarray[i >> 2] >> ((3 - i % 4) * 8)) & 0xf);            str += (new Character(a).toString() + new Character(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) ((bin[i >> 5] >>> (24 - i % 32)) & mask);        }        return str;    }    private static int bit_rol(int num, int cnt) {        return (num << cnt) | (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.charAt(len - 1);        String trailstr = "";        for (int i = len - 1; i >= 0 && str.charAt(i) == trailchar; i--) {            trailstr += str.charAt(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";        System.out.println("hex_sha1(" + data + ")=" + hex_sha1(data));        System.out.println("b64_sha1(" + data + ")=" + b64_sha1(data));        System.out.println("str_sha1(" + data + ")=" + str_sha1(data));        System.out.println("hex_hmac_sha1(" + key + "," + data + ")=" + hex_hmac_sha1(key, data));        System.out.println("b64_hmac_sha1(" + key + "," + data + ")=" + b64_hmac_sha1(key, data));        System.out.println("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) | (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 boolean 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.charAt(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 void main(String args[]) {        System.out.println("admin的SHA1的值为：" + hex_sha1("admin") + ",length=" + hex_sha1("admin").length());    }}
还有其他两种方法效果也是一样的
http://dtstudy.iteye.com/blog/855357 这是java自己提供的类
还有一种是commons-codec-1.5-bin.zip中的jar包提供的方法,详细看说明文档下载地址如下
http://download.csdn.net/detail/forever_crying/3870224