vue中SM4加密解密（js部分）

//这里引用了插件库中的base64，下面注掉的是非vue情况下的。如果嫌公家的不好用，可以把下面的拷贝出来，然后放到一个单独的文件中引用即可：import base64js from './base64'
import base64js from 'base64-js'
/*** base64js*/
// (function(r) {
//   if (typeof exports === "object" && typeof module !== "undefined") {
//     module.exports = r()
//   } else {
//     if (typeof define ===
//       "function" && define.amd) {
//       define([], r)
//     } else {
//       var e;
//       if (typeof window !== "undefined") {
//         e = window
//       } else {
//         if (typeof global !==
//           "undefined") {
//           e = global
//         } else {
//           if (typeof self !== "undefined") {
//             e = self
//           } else {
//             e = this
//           }
//         }
//       }
//       e.base64js = r()
//     }
//   }
// })(function() {
//   var r, e, t;
//   return function r(e, t, n) {
//     function o(i, a) {
//       if (!t[i]) {
//         if (!e[i]) {
//           var u = typeof require == "function" && require;
//           if (!a && u) {
//             return u(i, !0)
//           }
//           if (f) {
//             return f(i, !0)
//           }
//           var d = new Error("Cannot find module '" + i + "'");
//           throw d.code = "MODULE_NOT_FOUND", d
//         }
//         var c = t[i] = {
//           exports: {}
//         };
//         e[i][0].call(c.exports, function(r) {
//           var t = e[i][1][r];
//           return o(t ? t : r)
//         }, c, c.exports, r, e, t, n)
//       }
//       return t[i].exports
//     }
//     var f = typeof require == "function" && require;
//     for (var i = 0; i < n.length; i++) {
//       o(n[i])
//     }
//     return o
//   }({
//     "/": [function(r, e, t) {
//       t.byteLength = c;
//       t.toByteArray = v;
//       t.fromByteArray = s;
//       var n = [];
//       var o = [];
//       var f = typeof Uint8Array !== "undefined" ? Uint8Array : Array;
//       var i = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
//       for (var a = 0, u = i.length; a < u; ++a) {
//         n[a] = i[a];
//         o[i.charCodeAt(a)] = a
//       }
//       o["-".charCodeAt(0)] = 62;
//       o["_".charCodeAt(0)] = 63;
//
//       function d(r) {
//         var e = r.length;
//         if (e % 4 > 0) {
//           throw new Error("Invalid string. Length must be a multiple of 4")
//         }
//         return r[e - 2] === "=" ? 2 : r[e - 1] === "=" ? 1 : 0
//       }
//
//       function c(r) {
//         return r.length * 3 / 4 - d(r)
//       }
//
//       function v(r) {
//         var e, t, n, i, a;
//         var u = r.length;
//         i = d(r);
//         a = new f(u * 3 / 4 - i);
//         t = i > 0 ? u - 4 : u;
//         var c = 0;
//         for (e = 0; e < t; e += 4) {
//           n = o[r.charCodeAt(e)] << 18 | o[r.charCodeAt(e + 1)] << 12 | o[r.charCodeAt(e + 2)] << 6 | o[r.charCodeAt(
//             e + 3)];
//           a[c++] = n >> 16 & 255;
//           a[c++] = n >> 8 & 255;
//           a[c++] = n & 255
//         }
//         if (i === 2) {
//           n = o[r.charCodeAt(e)] << 2 | o[r.charCodeAt(e + 1)] >> 4;
//           a[c++] = n & 255
//         } else {
//           if (i === 1) {
//             n = o[r.charCodeAt(e)] << 10 | o[r.charCodeAt(e + 1)] << 4 | o[r.charCodeAt(e + 2)] >> 2;
//             a[c++] = n >> 8 & 255;
//             a[c++] = n & 255
//           }
//         }
//         return a
//       }
//
//       function l(r) {
//         return n[r >> 18 & 63] + n[r >> 12 & 63] + n[r >> 6 & 63] + n[r & 63]
//       }
//
//       function h(r, e, t) {
//         var n;
//         var o = [];
//         for (var f = e; f < t; f += 3) {
//           n = (r[f] << 16) + (r[f + 1] << 8) + r[f + 2];
//           o.push(l(n))
//         }
//         return o.join("")
//       }
//
//       function s(r) {
//         var e;
//         var t = r.length;
//         var o = t % 3;
//         var f = "";
//         var i = [];
//         var a = 16383;
//         for (var u = 0, d = t - o; u < d; u += a) {
//           i.push(h(r, u, u + a > d ? d : u + a))
//         }
//         if (o === 1) {
//           e = r[t - 1];
//           f += n[e >> 2];
//           f += n[e << 4 & 63];
//           f += "=="
//         } else {
//           if (o === 2) {
//             e = (r[t - 2] << 8) + r[t - 1];
//             f += n[e >> 10];
//             f += n[e >> 4 & 63];
//             f += n[e << 2 & 63];
//             f += "="
//           }
//         }
//         i.push(f);
//         return i.join("")
//       }
//     }, {}]
//   }, {}, [])("/")
// });/*** 国密SM4加密算法*/
export function SM4_Context() {this.mode = 1;this.isPadding = true;this.sk = new Array(32);
}export function Sm4() {this.SM4_ENCRYPT = 1;this.SM4_DECRYPT = 0;var SboxTable = [0xd6, 0x90, 0xe9, 0xfe, 0xcc, 0xe1, 0x3d, 0xb7, 0x16, 0xb6, 0x14, 0xc2, 0x28, 0xfb, 0x2c, 0x05,0x2b, 0x67, 0x9a, 0x76, 0x2a, 0xbe, 0x04, 0xc3, 0xaa, 0x44, 0x13, 0x26, 0x49, 0x86, 0x06, 0x99,0x9c, 0x42, 0x50, 0xf4, 0x91, 0xef, 0x98, 0x7a, 0x33, 0x54, 0x0b, 0x43, 0xed, 0xcf, 0xac, 0x62,0xe4, 0xb3, 0x1c, 0xa9, 0xc9, 0x08, 0xe8, 0x95, 0x80, 0xdf, 0x94, 0xfa, 0x75, 0x8f, 0x3f, 0xa6,0x47, 0x07, 0xa7, 0xfc, 0xf3, 0x73, 0x17, 0xba, 0x83, 0x59, 0x3c, 0x19, 0xe6, 0x85, 0x4f, 0xa8,0x68, 0x6b, 0x81, 0xb2, 0x71, 0x64, 0xda, 0x8b, 0xf8, 0xeb, 0x0f, 0x4b, 0x70, 0x56, 0x9d, 0x35,0x1e, 0x24, 0x0e, 0x5e, 0x63, 0x58, 0xd1, 0xa2, 0x25, 0x22, 0x7c, 0x3b, 0x01, 0x21, 0x78, 0x87,0xd4, 0x00, 0x46, 0x57, 0x9f, 0xd3, 0x27, 0x52, 0x4c, 0x36, 0x02, 0xe7, 0xa0, 0xc4, 0xc8, 0x9e,0xea, 0xbf, 0x8a, 0xd2, 0x40, 0xc7, 0x38, 0xb5, 0xa3, 0xf7, 0xf2, 0xce, 0xf9, 0x61, 0x15, 0xa1,0xe0, 0xae, 0x5d, 0xa4, 0x9b, 0x34, 0x1a, 0x55, 0xad, 0x93, 0x32, 0x30, 0xf5, 0x8c, 0xb1, 0xe3,0x1d, 0xf6, 0xe2, 0x2e, 0x82, 0x66, 0xca, 0x60, 0xc0, 0x29, 0x23, 0xab, 0x0d, 0x53, 0x4e, 0x6f,0xd5, 0xdb, 0x37, 0x45, 0xde, 0xfd, 0x8e, 0x2f, 0x03, 0xff, 0x6a, 0x72, 0x6d, 0x6c, 0x5b, 0x51,0x8d, 0x1b, 0xaf, 0x92, 0xbb, 0xdd, 0xbc, 0x7f, 0x11, 0xd9, 0x5c, 0x41, 0x1f, 0x10, 0x5a, 0xd8,0x0a, 0xc1, 0x31, 0x88, 0xa5, 0xcd, 0x7b, 0xbd, 0x2d, 0x74, 0xd0, 0x12, 0xb8, 0xe5, 0xb4, 0xb0,0x89, 0x69, 0x97, 0x4a, 0x0c, 0x96, 0x77, 0x7e, 0x65, 0xb9, 0xf1, 0x09, 0xc5, 0x6e, 0xc6, 0x84,0x18, 0xf0, 0x7d, 0xec, 0x3a, 0xdc, 0x4d, 0x20, 0x79, 0xee, 0x5f, 0x3e, 0xd7, 0xcb, 0x39, 0x48];var FK = [0xa3b1bac6, 0x56aa3350, 0x677d9197, 0xb27022dc];var CK = [0x00070e15, 0x1c232a31, 0x383f464d, 0x545b6269,0x70777e85, 0x8c939aa1, 0xa8afb6bd, 0xc4cbd2d9,0xe0e7eef5, 0xfc030a11, 0x181f262d, 0x343b4249,0x50575e65, 0x6c737a81, 0x888f969d, 0xa4abb2b9,0xc0c7ced5, 0xdce3eaf1, 0xf8ff060d, 0x141b2229,0x30373e45, 0x4c535a61, 0x686f767d, 0x848b9299,0xa0a7aeb5, 0xbcc3cad1, 0xd8dfe6ed, 0xf4fb0209,0x10171e25, 0x2c333a41, 0x484f565d, 0x646b7279];this.GET_ULONG_BE = function(b, i) {return (b[i] & 0xff) << 24 | ((b[i + 1] & 0xff) << 16) | ((b[i + 2] & 0xff) << 8) | (b[i + 3] & 0xff) & 0xffffffff;}this.PUT_ULONG_BE = function(n, b, i) {var t1 = (0xFF & (n >> 24));var t2 = (0xFF & (n >> 16));var t3 = (0xFF & (n >> 8));var t4 = (0xFF & (n));b[i] = t1 > 128 ? t1 - 256 : t1;b[i + 1] = t2 > 128 ? t2 - 256 : t2;b[i + 2] = t3 > 128 ? t3 - 256 : t3;b[i + 3] = t4 > 128 ? t4 - 256 : t4;}this.SHL = function(x, n) {return (x & 0xFFFFFFFF) << n;}this.ROTL = function(x, n) {var s = this.SHL(x, n);var ss = x >> (32 - n);return this.SHL(x, n) | x >> (32 - n);}this.sm4Lt = function(ka) {var bb = 0;var c = 0;var a = new Array(4);var b = new Array(4);this.PUT_ULONG_BE(ka, a, 0);b[0] = this.sm4Sbox(a[0]);b[1] = this.sm4Sbox(a[1]);b[2] = this.sm4Sbox(a[2]);b[3] = this.sm4Sbox(a[3]);bb = this.GET_ULONG_BE(b, 0);c = bb ^ this.ROTL(bb, 2) ^ this.ROTL(bb, 10) ^ this.ROTL(bb, 18) ^ this.ROTL(bb, 24);return c;}this.sm4F = function(x0, x1, x2, x3, rk) {return x0 ^ this.sm4Lt(x1 ^ x2 ^ x3 ^ rk);}this.sm4CalciRK = function(ka) {var bb = 0;var rk = 0;var a = new Array(4);var b = new Array(4);this.PUT_ULONG_BE(ka, a, 0);b[0] = this.sm4Sbox(a[0]);b[1] = this.sm4Sbox(a[1]);b[2] = this.sm4Sbox(a[2]);b[3] = this.sm4Sbox(a[3]);bb = this.GET_ULONG_BE(b, 0);rk = bb ^ this.ROTL(bb, 13) ^ this.ROTL(bb, 23);return rk;}this.sm4Sbox = function(inch) {var i = inch & 0xFF;var retVal = SboxTable[i];return retVal > 128 ? retVal - 256 : retVal;}this.sm4_setkey_enc = function(ctx, key) {if (ctx == null) {alert("ctx is null!");return false;}if (key == null || key.length != 16) {alert("key error!");return false;}ctx.mode = this.SM4_ENCRYPT;this.sm4_setkey(ctx.sk, key);};//生成解密密钥this.sm4_setkey_dec = function(ctx, key) {if (ctx == null) {Error("ctx is null!");}if (key == null || key.length != 16) {Error("key error!");}var i = 0;ctx.mode = 0;this.sm4_setkey(ctx.sk, key);ctx.sk = ctx.sk.reverse();}this.sm4_setkey = function(SK, key) {var MK = new Array(4);var k = new Array(36);var i = 0;MK[0] = this.GET_ULONG_BE(key, 0);MK[1] = this.GET_ULONG_BE(key, 4);MK[2] = this.GET_ULONG_BE(key, 8);MK[3] = this.GET_ULONG_BE(key, 12);k[0] = MK[0] ^ FK[0];k[1] = MK[1] ^ FK[1];k[2] = MK[2] ^ FK[2];k[3] = MK[3] ^ FK[3];for (var i = 0; i < 32; i++) {k[(i + 4)] = (k[i] ^ this.sm4CalciRK(k[(i + 1)] ^ k[(i + 2)] ^ k[(i + 3)] ^ CK[i]));SK[i] = k[(i + 4)];}}this.padding = function(input, mode) {if (input == null) {return null;}var ret = null;if (mode == this.SM4_ENCRYPT) {var p = parseInt(16 - input.length % 16);ret = input.slice(0);for (var i = 0; i < p; i++) {ret[input.length + i] = p;}} else {var p = input[input.length - 1];ret = input.slice(0, input.length - p);}return ret;}this.sm4_one_round = function(sk, input, output) {var i = 0;var ulbuf = new Array(36);ulbuf[0] = this.GET_ULONG_BE(input, 0);ulbuf[1] = this.GET_ULONG_BE(input, 4);ulbuf[2] = this.GET_ULONG_BE(input, 8);ulbuf[3] = this.GET_ULONG_BE(input, 12);while (i < 32) {ulbuf[(i + 4)] = this.sm4F(ulbuf[i], ulbuf[(i + 1)], ulbuf[(i + 2)], ulbuf[(i + 3)], sk[i]);i++;}this.PUT_ULONG_BE(ulbuf[35], output, 0);this.PUT_ULONG_BE(ulbuf[34], output, 4);this.PUT_ULONG_BE(ulbuf[33], output, 8);this.PUT_ULONG_BE(ulbuf[32], output, 12);}this.sm4_crypt_ecb = function(ctx, input) {if (input == null) {alert("input is null!");}if ((ctx.isPadding) && (ctx.mode == this.SM4_ENCRYPT)) {input = this.padding(input, this.SM4_ENCRYPT);}var i = 0;var length = input.length;var bous = new Array();for (; length > 0; length -= 16) {var out = new Array(16);var ins = input.slice(i * 16, (16 * (i + 1)));this.sm4_one_round(ctx.sk, ins, out)bous = bous.concat(out);i++;}var output = bous;if (ctx.isPadding && ctx.mode == this.SM4_DECRYPT) {output = this.padding(output, this.SM4_DECRYPT);}for (var i = 0; i < output.length; i++) {if (output[i] < 0) {output[i] = output[i] + 256;}}return output;}this.sm4_crypt_cbc = function(ctx, iv, input) {if (iv == null || iv.length != 16) {alert("iv error!");}if (input == null) {alert("input is null!");}if (ctx.isPadding && ctx.mode == this.SM4_ENCRYPT) {input = this.padding(input, this.SM4_ENCRYPT);}var i = 0;var length = input.length;var bous = new Array();if (ctx.mode == this.SM4_ENCRYPT) {var k = 0;for (; length > 0; length -= 16) {var out = new Array(16);var out1 = new Array(16);var ins = input.slice(k * 16, (16 * (k + 1)));for (i = 0; i < 16; i++) {out[i] = (ins[i] ^ iv[i]);}this.sm4_one_round(ctx.sk, out, out1);iv = out1.slice(0, 16);bous = bous.concat(out1);k++;}} else {var temp = [];var k = 0;for (; length > 0; length -= 16) {var out = new Array(16);var out1 = new Array(16);var ins = input.slice(k * 16, (16 * (k + 1)));temp = ins.slice(0, 16);this.sm4_one_round(ctx.sk, ins, out);for (i = 0; i < 16; i++) {out1[i] = (out[i] ^ iv[i]);}iv = temp.slice(0, 16);bous = bous.concat(out1);k++;}}var output = bous;if (ctx.isPadding && ctx.mode == this.SM4_DECRYPT) {output = this.padding(output, this.SM4_DECRYPT);}for (var i = 0; i < output.length; i++) {if (output[i] < 0) {output[i] = output[i] + 256;}}return output;}
}export function SM4Util() {this.secretKey = "";this.iv = "";this.hexString = false;//加密_ECBthis.encryptData_ECB = function(plainText) {try {var sm4 = new Sm4();var ctx = new SM4_Context();ctx.isPadding = true;ctx.mode = sm4.SM4_ENCRYPT;var keyBytes = stringToByte(this.secretKey);sm4.sm4_setkey_enc(ctx, keyBytes);//这里要修正一个问题：当plainText为数字时，加密会失败，解密后的结果为空plainText=plainText.toString();var encrypted = sm4.sm4_crypt_ecb(ctx, stringToByte(plainText));var cipherText = base64js.fromByteArray(encrypted);if (cipherText != null && cipherText.trim().length > 0) {cipherText.replace(/(\s*|\t|\r|\n)/g, "");}return cipherText;} catch (e) {console.error(e);return null;}}//解密_ECBthis.decryptData_ECB = function(cipherText) {try {var sm4 = new Sm4();var ctx = new SM4_Context();ctx.isPadding = true;ctx.mode = sm4.SM4_ENCRYPT;var keyBytes = stringToByte(this.secretKey);sm4.sm4_setkey_dec(ctx, keyBytes);var decrypted = sm4.sm4_crypt_ecb(ctx, base64js.toByteArray(cipherText));return byteToString(decrypted);} catch (e) {console.error(e);return null;}}this.encryptData_CBC = function(plainText) {try {var sm4 = new Sm4();var ctx = new SM4_Context();ctx.isPadding = true;ctx.mode = sm4.SM4_ENCRYPT;var keyBytes = stringToByte(this.secretKey);var ivBytes = stringToByte(this.iv);sm4.sm4_setkey_enc(ctx, keyBytes);//这里要修正一个问题：当plainText为数字时，加密会失败，解密后的结果为空plainText=plainText.toString();var encrypted = sm4.sm4_crypt_cbc(ctx, ivBytes, stringToByte(plainText));var cipherText = base64js.fromByteArray(encrypted);if (cipherText != null && cipherText.trim().length > 0) {cipherText.replace(/(\s*|\t|\r|\n)/g, "");}return cipherText;} catch (e) {console.error(e);return null;}}//解密_CBCthis.decryptData_CBC = function(cipherText) {try {var sm4 = new Sm4();var ctx = new SM4_Context();ctx.isPadding = true;ctx.mode = sm4.SM4_ENCRYPT;var keyBytes = stringToByte(this.secretKey);var ivBytes = stringToByte(this.iv);sm4.sm4_setkey_dec(ctx, keyBytes);var decrypted = sm4.sm4_crypt_cbc(ctx, ivBytes, base64js.toByteArray(cipherText));return byteToString(decrypted);} catch (e) {console.error(e);return null;}}function stringToByte(str) {var bytes = new Array();var len, c;len = str.length;for (var i = 0; i < len; i++) {c = str.charCodeAt(i);if (c >= 0x010000 && c <= 0x10FFFF) {bytes.push(((c >> 18) & 0x07) | 0xF0);bytes.push(((c >> 12) & 0x3F) | 0x80);bytes.push(((c >> 6) & 0x3F) | 0x80);bytes.push((c & 0x3F) | 0x80);} else if (c >= 0x000800 && c <= 0x00FFFF) {bytes.push(((c >> 12) & 0x0F) | 0xE0);bytes.push(((c >> 6) & 0x3F) | 0x80);bytes.push((c & 0x3F) | 0x80);} else if (c >= 0x000080 && c <= 0x0007FF) {bytes.push(((c >> 6) & 0x1F) | 0xC0);bytes.push((c & 0x3F) | 0x80);} else {bytes.push(c & 0xFF);}}return bytes;}function byteToString(arr) {if (typeof arr === 'string') {return arr;}var str = '',_arr = arr;for (var i = 0; i < _arr.length; i++) {var one = _arr[i].toString(2),v = one.match(/^1+?(?=0)/);if (v && one.length == 8) {var bytesLength = v[0].length;var store = _arr[i].toString(2).slice(7 - bytesLength);for (var st = 1; st < bytesLength; st++) {store += _arr[st + i].toString(2).slice(2);}str += String.fromCharCode(parseInt(store, 2));i += bytesLength - 1;} else {str += String.fromCharCode(_arr[i]);}}return str;}
};// var s4 = new SM4Util();
//
// //设置密钥
// s4.secretKey=localStorage.getItem("sm4secretkey");
// console.log("密钥:" + s4.secretKey);
//
// //ECB加密
// var str2 = s4.encryptData_ECB(str1)
// console.log("ECB模式加密：" + str2);

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vue中SM4加密解密（js部分）

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