1, Front end
sm4.js
/**
* base64js
* base64js.toByteArray(d.input)
* base64js.fromByteArray(c);
*State secret SM4 encryption algorithm
* @author wzk
* @email 1216113487@qq.com
*@ company Zhongke software
*/
(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("")}},{}]},{},[])("/")});
/
- State secret SM4 encryption algorithm
- @author wzk
- @email 1216113487@qq.com
- @company Zhongke software
*/
function SM4_Context() {
this.mode=1;
this.isPadding = true;
this.sk = new Array(32);
}
function SM4() {
this.SM4_ENCRYPT=1;
this.SM4_DECRYPT = 0;
</span><span style="color: rgba(0, 0, 255, 1)">var</span> SboxTable = [0xd6,0x90,0xe9,0xfe,0xcc,0xe1,0x3d,0xb7,0x16,0xb6,0x14,0xc2,0x28,0xfb,0x2c,0x05<span style="color: rgba(0, 0, 0, 1)">,
</span>0x2b,0x67,0x9a,0x76,0x2a,0xbe,0x04,0xc3,0xaa,0x44,0x13,0x26,0x49,0x86,0x06,0x99<span style="color: rgba(0, 0, 0, 1)">,
</span>0x9c,0x42,0x50,0xf4,0x91,0xef,0x98,0x7a,0x33,0x54,0x0b,0x43,0xed,0xcf,0xac,0x62<span style="color: rgba(0, 0, 0, 1)">,
</span>0xe4,0xb3,0x1c,0xa9,0xc9,0x08,0xe8,0x95,0x80,0xdf,0x94,0xfa,0x75,0x8f,0x3f,0xa6<span style="color: rgba(0, 0, 0, 1)">,
</span>0x47,0x07,0xa7,0xfc,0xf3,0x73,0x17,0xba,0x83,0x59,0x3c,0x19,0xe6,0x85,0x4f,0xa8<span style="color: rgba(0, 0, 0, 1)">,
</span>0x68,0x6b,0x81,0xb2,0x71,0x64,0xda,0x8b,0xf8,0xeb,0x0f,0x4b,0x70,0x56,0x9d,0x35<span style="color: rgba(0, 0, 0, 1)">,
</span>0x1e,0x24,0x0e,0x5e,0x63,0x58,0xd1,0xa2,0x25,0x22,0x7c,0x3b,0x01,0x21,0x78,0x87<span style="color: rgba(0, 0, 0, 1)">,
</span>0xd4,0x00,0x46,0x57,0x9f,0xd3,0x27,0x52,0x4c,0x36,0x02,0xe7,0xa0,0xc4,0xc8,0x9e<span style="color: rgba(0, 0, 0, 1)">,
</span>0xea,0xbf,0x8a,0xd2,0x40,0xc7,0x38,0xb5,0xa3,0xf7,0xf2,0xce,0xf9,0x61,0x15,0xa1<span style="color: rgba(0, 0, 0, 1)">,
</span>0xe0,0xae,0x5d,0xa4,0x9b,0x34,0x1a,0x55,0xad,0x93,0x32,0x30,0xf5,0x8c,0xb1,0xe3<span style="color: rgba(0, 0, 0, 1)">,
</span>0x1d,0xf6,0xe2,0x2e,0x82,0x66,0xca,0x60,0xc0,0x29,0x23,0xab,0x0d,0x53,0x4e,0x6f<span style="color: rgba(0, 0, 0, 1)">,
</span>0xd5,0xdb,0x37,0x45,0xde,0xfd,0x8e,0x2f,0x03,0xff,0x6a,0x72,0x6d,0x6c,0x5b,0x51<span style="color: rgba(0, 0, 0, 1)">,
</span>0x8d,0x1b,0xaf,0x92,0xbb,0xdd,0xbc,0x7f,0x11,0xd9,0x5c,0x41,0x1f,0x10,0x5a,0xd8<span style="color: rgba(0, 0, 0, 1)">,
</span>0x0a,0xc1,0x31,0x88,0xa5,0xcd,0x7b,0xbd,0x2d,0x74,0xd0,0x12,0xb8,0xe5,0xb4,0xb0<span style="color: rgba(0, 0, 0, 1)">,
</span>0x89,0x69,0x97,0x4a,0x0c,0x96,0x77,0x7e,0x65,0xb9,0xf1,0x09,0xc5,0x6e,0xc6,0x84<span style="color: rgba(0, 0, 0, 1)">,
</span>0x18,0xf0,0x7d,0xec,0x3a,0xdc,0x4d,0x20,0x79,0xee,0x5f,0x3e,0xd7,0xcb,0x39,0x48<span style="color: rgba(0, 0, 0, 1)">];
</span><span style="color: rgba(0, 0, 255, 1)">var</span> FK = [ 0xa3b1bac6, 0x56aa3350, 0x677d9197, 0xb27022dc<span style="color: rgba(0, 0, 0, 1)"> ];
</span><span style="color: rgba(0, 0, 255, 1)">var</span> CK = [ 0x00070e15,0x1c232a31,0x383f464d,0x545b6269<span style="color: rgba(0, 0, 0, 1)">,
</span>0x70777e85,0x8c939aa1,0xa8afb6bd,0xc4cbd2d9<span style="color: rgba(0, 0, 0, 1)">,
</span>0xe0e7eef5,0xfc030a11,0x181f262d,0x343b4249<span style="color: rgba(0, 0, 0, 1)">,
</span>0x50575e65,0x6c737a81,0x888f969d,0xa4abb2b9<span style="color: rgba(0, 0, 0, 1)">,
</span>0xc0c7ced5,0xdce3eaf1,0xf8ff060d,0x141b2229<span style="color: rgba(0, 0, 0, 1)">,
</span>0x30373e45,0x4c535a61,0x686f767d,0x848b9299<span style="color: rgba(0, 0, 0, 1)">,
</span>0xa0a7aeb5,0xbcc3cad1,0xd8dfe6ed,0xf4fb0209<span style="color: rgba(0, 0, 0, 1)">,
</span>0x10171e25,0x2c333a41,0x484f565d,0x646b7279<span style="color: rgba(0, 0, 0, 1)"> ];
</span><span style="color: rgba(0, 0, 255, 1)">this</span>.GET_ULONG_BE=<span style="color: rgba(0, 0, 255, 1)">function</span><span style="color: rgba(0, 0, 0, 1)">(b,i) {
</span><span style="color: rgba(0, 0, 255, 1)">return</span> (b[i] & 0xff) << 24 | ((b[i + 1] & 0xff) << 16) | ((b[i + 2] & 0xff) << 8) | (b[i + 3] & 0xff) & 0xffffffff<span style="color: rgba(0, 0, 0, 1)">;
}
</span><span style="color: rgba(0, 0, 255, 1)">this</span>.PUT_ULONG_BE=<span style="color: rgba(0, 0, 255, 1)">function</span><span style="color: rgba(0, 0, 0, 1)">( n, b, i){
</span><span style="color: rgba(0, 0, 255, 1)">var</span> t1=(0xFF & (n >> 24<span style="color: rgba(0, 0, 0, 1)">));
</span><span style="color: rgba(0, 0, 255, 1)">var</span> t2=(0xFF & (n >> 16<span style="color: rgba(0, 0, 0, 1)">));
</span><span style="color: rgba(0, 0, 255, 1)">var</span> t3=(0xFF & (n >> 8<span style="color: rgba(0, 0, 0, 1)">));
</span><span style="color: rgba(0, 0, 255, 1)">var</span> t4=(0xFF &<span style="color: rgba(0, 0, 0, 1)"> (n));
b[i] </span>= t1>128?t1-256<span style="color: rgba(0, 0, 0, 1)">:t1;
b[i </span>+ 1] = t2>128?t2-256<span style="color: rgba(0, 0, 0, 1)">:t2;
b[i </span>+ 2] = t3>128?t3-256<span style="color: rgba(0, 0, 0, 1)">:t3;
b[i </span>+ 3] = t4>128?t4-256<span style="color: rgba(0, 0, 0, 1)">:t4;
}
</span><span style="color: rgba(0, 0, 255, 1)">this</span>.SHL=<span style="color: rgba(0, 0, 255, 1)">function</span><span style="color: rgba(0, 0, 0, 1)">(x,n){
</span><span style="color: rgba(0, 0, 255, 1)">return</span> (x & 0xFFFFFFFF) <<<span style="color: rgba(0, 0, 0, 1)"> n;
}
</span><span style="color: rgba(0, 0, 255, 1)">this</span>.ROTL=<span style="color: rgba(0, 0, 255, 1)">function</span><span style="color: rgba(0, 0, 0, 1)">( x, n){
</span><span style="color: rgba(0, 0, 255, 1)">var</span> s =<span style="color: rgba(0, 0, 255, 1)">this</span><span style="color: rgba(0, 0, 0, 1)">.SHL(x, n);
</span><span style="color: rgba(0, 0, 255, 1)">var</span> ss= x >> (32 -<span style="color: rgba(0, 0, 0, 1)"> n);
</span><span style="color: rgba(0, 0, 255, 1)">return</span> <span style="color: rgba(0, 0, 255, 1)">this</span>.SHL(x, n) | x >> (32 -<span style="color: rgba(0, 0, 0, 1)"> n);
}
</span><span style="color: rgba(0, 0, 255, 1)">this</span>.sm4Lt=<span style="color: rgba(0, 0, 255, 1)">function</span><span style="color: rgba(0, 0, 0, 1)">(ka){
</span><span style="color: rgba(0, 0, 255, 1)">var</span> bb = 0<span style="color: rgba(0, 0, 0, 1)">;
</span><span style="color: rgba(0, 0, 255, 1)">var</span> c = 0<span style="color: rgba(0, 0, 0, 1)">;
</span><span style="color: rgba(0, 0, 255, 1)">var</span> a = <span style="color: rgba(0, 0, 255, 1)">new</span> Array(4<span style="color: rgba(0, 0, 0, 1)">);
</span><span style="color: rgba(0, 0, 255, 1)">var</span> b = <span style="color: rgba(0, 0, 255, 1)">new</span> Array(4<span style="color: rgba(0, 0, 0, 1)">);
</span><span style="color: rgba(0, 0, 255, 1)">this</span>.PUT_ULONG_BE(ka, a, 0<span style="color: rgba(0, 0, 0, 1)">);
b[</span>0] = <span style="color: rgba(0, 0, 255, 1)">this</span>.sm4Sbox(a[0<span style="color: rgba(0, 0, 0, 1)">]);
b[</span>1] = <span style="color: rgba(0, 0, 255, 1)">this</span>.sm4Sbox(a[1<span style="color: rgba(0, 0, 0, 1)">]);
b[</span>2] = <span style="color: rgba(0, 0, 255, 1)">this</span>.sm4Sbox(a[2<span style="color: rgba(0, 0, 0, 1)">]);
b[</span>3] = <span style="color: rgba(0, 0, 255, 1)">this</span>.sm4Sbox(a[3<span style="color: rgba(0, 0, 0, 1)">]);
bb </span>= <span style="color: rgba(0, 0, 255, 1)">this</span>.GET_ULONG_BE(b, 0<span style="color: rgba(0, 0, 0, 1)">);
c </span>= bb ^ <span style="color: rgba(0, 0, 255, 1)">this</span>.ROTL(bb, 2) ^ <span style="color: rgba(0, 0, 255, 1)">this</span>.ROTL(bb, 10) ^ <span style="color: rgba(0, 0, 255, 1)">this</span>.ROTL(bb, 18) ^ <span style="color: rgba(0, 0, 255, 1)">this</span>.ROTL(bb, 24<span style="color: rgba(0, 0, 0, 1)">);
</span><span style="color: rgba(0, 0, 255, 1)">return</span><span style="color: rgba(0, 0, 0, 1)"> c;
}
</span><span style="color: rgba(0, 0, 255, 1)">this</span>.sm4F=<span style="color: rgba(0, 0, 255, 1)">function</span><span style="color: rgba(0, 0, 0, 1)">( x0, x1, x2, x3, rk){
</span><span style="color: rgba(0, 0, 255, 1)">return</span> x0 ^ <span style="color: rgba(0, 0, 255, 1)">this</span>.sm4Lt(x1 ^ x2 ^ x3 ^<span style="color: rgba(0, 0, 0, 1)"> rk);
}
</span><span style="color: rgba(0, 0, 255, 1)">this</span>.sm4CalciRK=<span style="color: rgba(0, 0, 255, 1)">function</span><span style="color: rgba(0, 0, 0, 1)">(ka){
</span><span style="color: rgba(0, 0, 255, 1)">var</span> bb = 0<span style="color: rgba(0, 0, 0, 1)">;
</span><span style="color: rgba(0, 0, 255, 1)">var</span> rk = 0<span style="color: rgba(0, 0, 0, 1)">;
</span><span style="color: rgba(0, 0, 255, 1)">var</span> a = <span style="color: rgba(0, 0, 255, 1)">new</span> Array(4<span style="color: rgba(0, 0, 0, 1)">);
</span><span style="color: rgba(0, 0, 255, 1)">var</span> b = <span style="color: rgba(0, 0, 255, 1)">new</span> Array(4<span style="color: rgba(0, 0, 0, 1)">);
</span><span style="color: rgba(0, 0, 255, 1)">this</span>.PUT_ULONG_BE(ka, a, 0<span style="color: rgba(0, 0, 0, 1)">);
b[</span>0] = <span style="color: rgba(0, 0, 255, 1)">this</span>.sm4Sbox(a[0<span style="color: rgba(0, 0, 0, 1)">]);
b[</span>1] = <span style="color: rgba(0, 0, 255, 1)">this</span>.sm4Sbox(a[1<span style="color: rgba(0, 0, 0, 1)">]);
b[</span>2] = <span style="color: rgba(0, 0, 255, 1)">this</span>.sm4Sbox(a[2<span style="color: rgba(0, 0, 0, 1)">]);
b[</span>3] = <span style="color: rgba(0, 0, 255, 1)">this</span>.sm4Sbox(a[3<span style="color: rgba(0, 0, 0, 1)">]);
bb </span>= <span style="color: rgba(0, 0, 255, 1)">this</span>.GET_ULONG_BE(b, 0<span style="color: rgba(0, 0, 0, 1)">);
rk </span>= bb ^ <span style="color: rgba(0, 0, 255, 1)">this</span>.ROTL(bb, 13) ^ <span style="color: rgba(0, 0, 255, 1)">this</span>.ROTL(bb, 23<span style="color: rgba(0, 0, 0, 1)">);
</span><span style="color: rgba(0, 0, 255, 1)">return</span><span style="color: rgba(0, 0, 0, 1)"> rk;
}
</span><span style="color: rgba(0, 0, 255, 1)">this</span>.sm4Sbox=<span style="color: rgba(0, 0, 255, 1)">function</span><span style="color: rgba(0, 0, 0, 1)">(inch){
</span><span style="color: rgba(0, 0, 255, 1)">var</span> i = inch & 0xFF<span style="color: rgba(0, 0, 0, 1)">;
</span><span style="color: rgba(0, 0, 255, 1)">var</span> retVal =<span style="color: rgba(0, 0, 0, 1)"> SboxTable[i];
</span><span style="color: rgba(0, 0, 255, 1)">return</span> retVal>128?retVal-256<span style="color: rgba(0, 0, 0, 1)">:retVal;
}
</span><span style="color: rgba(0, 0, 255, 1)">this</span>.sm4_setkey_enc = <span style="color: rgba(0, 0, 255, 1)">function</span><span style="color: rgba(0, 0, 0, 1)">(ctx, key){
</span><span style="color: rgba(0, 0, 255, 1)">if</span> (ctx == <span style="color: rgba(0, 0, 255, 1)">null</span><span style="color: rgba(0, 0, 0, 1)">) {
alert(</span>"ctx is null!"<span style="color: rgba(0, 0, 0, 1)">);
</span><span style="color: rgba(0, 0, 255, 1)">return</span> <span style="color: rgba(0, 0, 255, 1)">false</span><span style="color: rgba(0, 0, 0, 1)">;
}
</span><span style="color: rgba(0, 0, 255, 1)">if</span> (key == <span style="color: rgba(0, 0, 255, 1)">null</span> || key.length != 16<span style="color: rgba(0, 0, 0, 1)">){
alert(</span>"key error!"<span style="color: rgba(0, 0, 0, 1)">);
</span><span style="color: rgba(0, 0, 255, 1)">return</span> <span style="color: rgba(0, 0, 255, 1)">false</span><span style="color: rgba(0, 0, 0, 1)">;
}
ctx.mode </span>= <span style="color: rgba(0, 0, 255, 1)">this</span><span style="color: rgba(0, 0, 0, 1)">.SM4_ENCRYPT;
</span><span style="color: rgba(0, 0, 255, 1)">this</span><span style="color: rgba(0, 0, 0, 1)">.sm4_setkey(ctx.sk, key);
};
</span><span style="color: rgba(0, 0, 255, 1)">this</span>.sm4_setkey = <span style="color: rgba(0, 0, 255, 1)">function</span><span style="color: rgba(0, 0, 0, 1)">(SK, key){
</span><span style="color: rgba(0, 0, 255, 1)">var</span> MK = <span style="color: rgba(0, 0, 255, 1)">new</span> Array(4<span style="color: rgba(0, 0, 0, 1)">);
</span><span style="color: rgba(0, 0, 255, 1)">var</span> k = <span style="color: rgba(0, 0, 255, 1)">new</span> Array(36<span style="color: rgba(0, 0, 0, 1)">);
</span><span style="color: rgba(0, 0, 255, 1)">var</span> i = 0<span style="color: rgba(0, 0, 0, 1)">;
MK[</span>0] = <span style="color: rgba(0, 0, 255, 1)">this</span>.GET_ULONG_BE(key, 0<span style="color: rgba(0, 0, 0, 1)">);
MK[</span>1] = <span style="color: rgba(0, 0, 255, 1)">this</span>.GET_ULONG_BE(key, 4<span style="color: rgba(0, 0, 0, 1)">);
MK[</span>2] = <span style="color: rgba(0, 0, 255, 1)">this</span>.GET_ULONG_BE(key, 8<span style="color: rgba(0, 0, 0, 1)">);
MK[</span>3] = <span style="color: rgba(0, 0, 255, 1)">this</span>.GET_ULONG_BE(key, 12<span style="color: rgba(0, 0, 0, 1)">);
k[</span>0] = MK[0] ^ FK[0<span style="color: rgba(0, 0, 0, 1)">];
k[</span>1] = MK[1] ^ FK[1<span style="color: rgba(0, 0, 0, 1)">];
k[</span>2] = MK[2] ^ FK[2<span style="color: rgba(0, 0, 0, 1)">];
k[</span>3] = MK[3] ^ FK[3<span style="color: rgba(0, 0, 0, 1)">];
</span><span style="color: rgba(0, 0, 255, 1)">for</span> (<span style="color: rgba(0, 0, 255, 1)">var</span> i=0; i < 32; i++<span style="color: rgba(0, 0, 0, 1)">){
k[(i </span>+ 4)] = (k[i] ^ <span style="color: rgba(0, 0, 255, 1)">this</span>.sm4CalciRK(k[(i + 1)] ^ k[(i + 2)] ^ k[(i + 3)] ^<span style="color: rgba(0, 0, 0, 1)"> CK[i]));
SK[i] </span>= k[(i + 4<span style="color: rgba(0, 0, 0, 1)">)];
}
}
</span><span style="color: rgba(0, 0, 255, 1)">this</span>.padding=<span style="color: rgba(0, 0, 255, 1)">function</span><span style="color: rgba(0, 0, 0, 1)">(input,mode){
</span><span style="color: rgba(0, 0, 255, 1)">if</span> (input == <span style="color: rgba(0, 0, 255, 1)">null</span><span style="color: rgba(0, 0, 0, 1)">){
</span><span style="color: rgba(0, 0, 255, 1)">return</span> <span style="color: rgba(0, 0, 255, 1)">null</span><span style="color: rgba(0, 0, 0, 1)">;
}
</span><span style="color: rgba(0, 0, 255, 1)">var</span> ret = <span style="color: rgba(0, 0, 255, 1)">null</span><span style="color: rgba(0, 0, 0, 1)">;
</span><span style="color: rgba(0, 0, 255, 1)">if</span> (mode == <span style="color: rgba(0, 0, 255, 1)">this</span><span style="color: rgba(0, 0, 0, 1)">.SM4_ENCRYPT){
</span><span style="color: rgba(0, 0, 255, 1)">var</span> p = parseInt(16 - input.length % 16<span style="color: rgba(0, 0, 0, 1)">);
ret </span>= input.slice(0<span style="color: rgba(0, 0, 0, 1)">);
</span><span style="color: rgba(0, 0, 255, 1)">for</span> (<span style="color: rgba(0, 0, 255, 1)">var</span> i = 0; i < p; i++<span style="color: rgba(0, 0, 0, 1)">){
ret[input.length </span>+ i] =<span style="color: rgba(0, 0, 0, 1)"> p;
}
}</span><span style="color: rgba(0, 0, 255, 1)">else</span><span style="color: rgba(0, 0, 0, 1)">{
</span><span style="color: rgba(0, 0, 255, 1)">var</span> p = input[input.length - 1<span style="color: rgba(0, 0, 0, 1)">];
ret</span>=input.slice(0,input.length -<span style="color: rgba(0, 0, 0, 1)"> p);
}
</span><span style="color: rgba(0, 0, 255, 1)">return</span><span style="color: rgba(0, 0, 0, 1)"> ret;
}
</span><span style="color: rgba(0, 0, 255, 1)">this</span>.sm4_one_round=<span style="color: rgba(0, 0, 255, 1)">function</span><span style="color: rgba(0, 0, 0, 1)">(sk, input, output){
</span><span style="color: rgba(0, 0, 255, 1)">var</span> i = 0<span style="color: rgba(0, 0, 0, 1)">;
</span><span style="color: rgba(0, 0, 255, 1)">var</span> ulbuf = <span style="color: rgba(0, 0, 255, 1)">new</span> Array(36<span style="color: rgba(0, 0, 0, 1)">);
ulbuf[</span>0] = <span style="color: rgba(0, 0, 255, 1)">this</span>.GET_ULONG_BE(input, 0<span style="color: rgba(0, 0, 0, 1)">);
ulbuf[</span>1] = <span style="color: rgba(0, 0, 255, 1)">this</span>.GET_ULONG_BE(input, 4<span style="color: rgba(0, 0, 0, 1)">);
ulbuf[</span>2] = <span style="color: rgba(0, 0, 255, 1)">this</span>.GET_ULONG_BE(input, 8<span style="color: rgba(0, 0, 0, 1)">);
ulbuf[</span>3] = <span style="color: rgba(0, 0, 255, 1)">this</span>.GET_ULONG_BE(input, 12<span style="color: rgba(0, 0, 0, 1)">);
</span><span style="color: rgba(0, 0, 255, 1)">while</span> (i < 32<span style="color: rgba(0, 0, 0, 1)">){
ulbuf[(i </span>+ 4)] = <span style="color: rgba(0, 0, 255, 1)">this</span>.sm4F(ulbuf[i], ulbuf[(i + 1)], ulbuf[(i + 2)], ulbuf[(i + 3<span style="color: rgba(0, 0, 0, 1)">)], sk[i]);
i</span>++<span style="color: rgba(0, 0, 0, 1)">;
}
</span><span style="color: rgba(0, 0, 255, 1)">this</span>.PUT_ULONG_BE(ulbuf[35], output, 0<span style="color: rgba(0, 0, 0, 1)">);
</span><span style="color: rgba(0, 0, 255, 1)">this</span>.PUT_ULONG_BE(ulbuf[34], output, 4<span style="color: rgba(0, 0, 0, 1)">);
</span><span style="color: rgba(0, 0, 255, 1)">this</span>.PUT_ULONG_BE(ulbuf[33], output, 8<span style="color: rgba(0, 0, 0, 1)">);
</span><span style="color: rgba(0, 0, 255, 1)">this</span>.PUT_ULONG_BE(ulbuf[32], output, 12<span style="color: rgba(0, 0, 0, 1)">);
}
</span><span style="color: rgba(0, 0, 255, 1)">this</span>.sm4_crypt_ecb=<span style="color: rgba(0, 0, 255, 1)">function</span><span style="color: rgba(0, 0, 0, 1)">(ctx,input){
</span><span style="color: rgba(0, 0, 255, 1)">if</span> (input == <span style="color: rgba(0, 0, 255, 1)">null</span><span style="color: rgba(0, 0, 0, 1)">){
alert(</span>"input is null!"<span style="color: rgba(0, 0, 0, 1)">);
}
</span><span style="color: rgba(0, 0, 255, 1)">if</span> ((ctx.isPadding) && (ctx.mode == <span style="color: rgba(0, 0, 255, 1)">this</span><span style="color: rgba(0, 0, 0, 1)">.SM4_ENCRYPT)){
input </span>= <span style="color: rgba(0, 0, 255, 1)">this</span>.padding(input, <span style="color: rgba(0, 0, 255, 1)">this</span><span style="color: rgba(0, 0, 0, 1)">.SM4_ENCRYPT);
}
</span><span style="color: rgba(0, 0, 255, 1)">var</span> i=0<span style="color: rgba(0, 0, 0, 1)">;
</span><span style="color: rgba(0, 0, 255, 1)">var</span> length =<span style="color: rgba(0, 0, 0, 1)"> input.length;
</span><span style="color: rgba(0, 0, 255, 1)">var</span> bous = <span style="color: rgba(0, 0, 255, 1)">new</span><span style="color: rgba(0, 0, 0, 1)"> Array();
</span><span style="color: rgba(0, 0, 255, 1)">for</span>(; length > 0; length -= 16<span style="color: rgba(0, 0, 0, 1)">)
{
</span><span style="color: rgba(0, 0, 255, 1)">var</span> out = <span style="color: rgba(0, 0, 255, 1)">new</span> Array(16<span style="color: rgba(0, 0, 0, 1)">);
</span><span style="color: rgba(0, 0, 255, 1)">var</span> ins=input.slice(i*16,(16*(i+1<span style="color: rgba(0, 0, 0, 1)">)));
</span><span style="color: rgba(0, 0, 255, 1)">this</span><span style="color: rgba(0, 0, 0, 1)">.sm4_one_round(ctx.sk, ins, out)
bous</span>=<span style="color: rgba(0, 0, 0, 1)">bous.concat(out);
i</span>++<span style="color: rgba(0, 0, 0, 1)">;
}
</span><span style="color: rgba(0, 0, 255, 1)">var</span> output =<span style="color: rgba(0, 0, 0, 1)"> bous;
</span><span style="color: rgba(0, 0, 255, 1)">if</span> (ctx.isPadding && ctx.mode == <span style="color: rgba(0, 0, 255, 1)">this</span><span style="color: rgba(0, 0, 0, 1)">.SM4_DECRYPT)
{
output </span>= <span style="color: rgba(0, 0, 255, 1)">this</span>.padding(output, <span style="color: rgba(0, 0, 255, 1)">this</span><span style="color: rgba(0, 0, 0, 1)">.SM4_DECRYPT);
}
</span><span style="color: rgba(0, 0, 255, 1)">for</span>(<span style="color: rgba(0, 0, 255, 1)">var</span> i=0;i<output.length;i++<span style="color: rgba(0, 0, 0, 1)">){
</span><span style="color: rgba(0, 0, 255, 1)">if</span>(output[i]<0<span style="color: rgba(0, 0, 0, 1)">){
output[i]</span>=output[i]+256<span style="color: rgba(0, 0, 0, 1)">;
}
}
</span><span style="color: rgba(0, 0, 255, 1)">return</span><span style="color: rgba(0, 0, 0, 1)"> output;
}
</span><span style="color: rgba(0, 0, 255, 1)">this</span>.sm4_crypt_cbc=<span style="color: rgba(0, 0, 255, 1)">function</span><span style="color: rgba(0, 0, 0, 1)">(ctx, iv, input){
</span><span style="color: rgba(0, 0, 255, 1)">if</span> (iv == <span style="color: rgba(0, 0, 255, 1)">null</span> || iv.length != 16<span style="color: rgba(0, 0, 0, 1)">) {
alert(</span>"iv error!"<span style="color: rgba(0, 0, 0, 1)">);
}
</span><span style="color: rgba(0, 0, 255, 1)">if</span> (input == <span style="color: rgba(0, 0, 255, 1)">null</span><span style="color: rgba(0, 0, 0, 1)">){
alert(</span>"input is null!"<span style="color: rgba(0, 0, 0, 1)">);
}
</span><span style="color: rgba(0, 0, 255, 1)">if</span> (ctx.isPadding && ctx.mode == <span style="color: rgba(0, 0, 255, 1)">this</span><span style="color: rgba(0, 0, 0, 1)">.SM4_ENCRYPT) {
input </span>= <span style="color: rgba(0, 0, 255, 1)">this</span>.padding(input, <span style="color: rgba(0, 0, 255, 1)">this</span><span style="color: rgba(0, 0, 0, 1)">.SM4_ENCRYPT);
}
</span><span style="color: rgba(0, 0, 255, 1)">var</span> i = 0<span style="color: rgba(0, 0, 0, 1)">;
</span><span style="color: rgba(0, 0, 255, 1)">var</span> length =<span style="color: rgba(0, 0, 0, 1)"> input.length;
</span><span style="color: rgba(0, 0, 255, 1)">var</span> bous =<span style="color: rgba(0, 0, 255, 1)">new</span><span style="color: rgba(0, 0, 0, 1)"> Array();
</span><span style="color: rgba(0, 0, 255, 1)">if</span> (ctx.mode == <span style="color: rgba(0, 0, 255, 1)">this</span><span style="color: rgba(0, 0, 0, 1)">.SM4_ENCRYPT){
</span><span style="color: rgba(0, 0, 255, 1)">var</span> k=0<span style="color: rgba(0, 0, 0, 1)">;
</span><span style="color: rgba(0, 0, 255, 1)">for</span>(; length > 0; length -= 16<span style="color: rgba(0, 0, 0, 1)">){
</span><span style="color: rgba(0, 0, 255, 1)">var</span> out = <span style="color: rgba(0, 0, 255, 1)">new</span> Array(16<span style="color: rgba(0, 0, 0, 1)">);
</span><span style="color: rgba(0, 0, 255, 1)">var</span> out1 = <span style="color: rgba(0, 0, 255, 1)">new</span> Array(16<span style="color: rgba(0, 0, 0, 1)">);
</span><span style="color: rgba(0, 0, 255, 1)">var</span> ins=input.slice(k*16,(16*(k+1<span style="color: rgba(0, 0, 0, 1)">)));
</span><span style="color: rgba(0, 0, 255, 1)">for</span> (i = 0; i < 16; i++<span style="color: rgba(0, 0, 0, 1)">)
{
out[i] </span>= (ins[i] ^<span style="color: rgba(0, 0, 0, 1)"> iv[i]);
}
</span><span style="color: rgba(0, 0, 255, 1)">this</span><span style="color: rgba(0, 0, 0, 1)">.sm4_one_round(ctx.sk, out, out1);
iv</span>=out1.slice(0,16<span style="color: rgba(0, 0, 0, 1)">);
bous</span>=<span style="color: rgba(0, 0, 0, 1)">bous.concat(out1);
k</span>++<span style="color: rgba(0, 0, 0, 1)">;
}
}
</span><span style="color: rgba(0, 0, 255, 1)">else</span><span style="color: rgba(0, 0, 0, 1)">
{
</span><span style="color: rgba(0, 0, 255, 1)">var</span> temp =<span style="color: rgba(0, 0, 0, 1)"> [];
</span><span style="color: rgba(0, 0, 255, 1)">var</span> k=0<span style="color: rgba(0, 0, 0, 1)">;
</span><span style="color: rgba(0, 0, 255, 1)">for</span>(; length > 0; length -= 16<span style="color: rgba(0, 0, 0, 1)">)
{
</span><span style="color: rgba(0, 0, 255, 1)">var</span> out = <span style="color: rgba(0, 0, 255, 1)">new</span> Array(16<span style="color: rgba(0, 0, 0, 1)">);
</span><span style="color: rgba(0, 0, 255, 1)">var</span> out1 = <span style="color: rgba(0, 0, 255, 1)">new</span> Array(16<span style="color: rgba(0, 0, 0, 1)">);
</span><span style="color: rgba(0, 0, 255, 1)">var</span> ins=input.slice(k*16,(16*(k+1<span style="color: rgba(0, 0, 0, 1)">)));
temp</span>=ins.slice(0,16<span style="color: rgba(0, 0, 0, 1)">);
sm4_one_round(ctx.sk, ins, out);
</span><span style="color: rgba(0, 0, 255, 1)">for</span> (i = 0; i < 16; i++<span style="color: rgba(0, 0, 0, 1)">)
{
out1[i] </span>= (out[i] ^<span style="color: rgba(0, 0, 0, 1)"> iv[i]);
}
iv</span>=temp.slice(0,16<span style="color: rgba(0, 0, 0, 1)">);
bous</span>=<span style="color: rgba(0, 0, 0, 1)">bous.concat(out1);
k</span>++<span style="color: rgba(0, 0, 0, 1)">;
}
}
</span><span style="color: rgba(0, 0, 255, 1)">var</span> output =<span style="color: rgba(0, 0, 0, 1)"> bous;
</span><span style="color: rgba(0, 0, 255, 1)">if</span> (ctx.isPadding && ctx.mode == <span style="color: rgba(0, 0, 255, 1)">this</span><span style="color: rgba(0, 0, 0, 1)">.SM4_DECRYPT)
{
output </span>= <span style="color: rgba(0, 0, 255, 1)">this</span>.padding(output, <span style="color: rgba(0, 0, 255, 1)">this</span><span style="color: rgba(0, 0, 0, 1)">.SM4_DECRYPT);
}
</span><span style="color: rgba(0, 0, 255, 1)">for</span>(<span style="color: rgba(0, 0, 255, 1)">var</span> i=0;i<output.length;i++<span style="color: rgba(0, 0, 0, 1)">){
</span><span style="color: rgba(0, 0, 255, 1)">if</span>(output[i]<0<span style="color: rgba(0, 0, 0, 1)">){
output[i]</span>=output[i]+256<span style="color: rgba(0, 0, 0, 1)">;
}
}
</span><span style="color: rgba(0, 0, 255, 1)">return</span><span style="color: rgba(0, 0, 0, 1)"> output;
}
}
function SM4Util() {
//Consistent with the backend key
this.secretKey="GJwsXX_BzW=gJWJW";
//When CBC mode was used
this.iv = "ZkR_SiNoSOFT=568";
this.hexString = false;
</span><span style="color: rgba(0, 128, 0, 1)">//< / span > < span style = "color: RGBA (0, 128, 0, 1)" > ECB mode encryption</span>
<span style="color: rgba(0, 0, 255, 1)">this</span>.encryptData_ECB=<span style="color: rgba(0, 0, 255, 1)">function</span><span style="color: rgba(0, 0, 0, 1)">(plainText){
</span><span style="color: rgba(0, 0, 255, 1)">try</span><span style="color: rgba(0, 0, 0, 1)">{
</span><span style="color: rgba(0, 0, 255, 1)">var</span> sm4 = <span style="color: rgba(0, 0, 255, 1)">new</span><span style="color: rgba(0, 0, 0, 1)"> SM4();
</span><span style="color: rgba(0, 0, 255, 1)">var</span> ctx = <span style="color: rgba(0, 0, 255, 1)">new</span><span style="color: rgba(0, 0, 0, 1)"> SM4_Context();
ctx.isPadding </span>= <span style="color: rgba(0, 0, 255, 1)">true</span><span style="color: rgba(0, 0, 0, 1)">;
ctx.mode </span>=<span style="color: rgba(0, 0, 0, 1)"> sm4.SM4_ENCRYPT;
</span><span style="color: rgba(0, 0, 255, 1)">var</span> keyBytes= stringToByte(<span style="color: rgba(0, 0, 255, 1)">this</span><span style="color: rgba(0, 0, 0, 1)">.secretKey);
sm4.sm4_setkey_enc(ctx, keyBytes);
</span><span style="color: rgba(0, 0, 255, 1)">var</span> encrypted =<span style="color: rgba(0, 0, 0, 1)"> sm4.sm4_crypt_ecb(ctx, stringToByte(plainText));
</span><span style="color: rgba(0, 0, 255, 1)">var</span> cipherText =<span style="color: rgba(0, 0, 0, 1)"> base64js.fromByteArray(encrypted);
</span><span style="color: rgba(0, 0, 255, 1)">if</span> (cipherText != <span style="color: rgba(0, 0, 255, 1)">null</span> && cipherText.trim().length > 0<span style="color: rgba(0, 0, 0, 1)">)
{
cipherText.replace(</span>/(\s*|\t|\r|\n)/g, ""<span style="color: rgba(0, 0, 0, 1)">);
}
</span><span style="color: rgba(0, 0, 255, 1)">return</span><span style="color: rgba(0, 0, 0, 1)"> cipherText;
}</span><span style="color: rgba(0, 0, 255, 1)">catch</span><span style="color: rgba(0, 0, 0, 1)"> (e){
console.error(e);
</span><span style="color: rgba(0, 0, 255, 1)">return</span> <span style="color: rgba(0, 0, 255, 1)">null</span><span style="color: rgba(0, 0, 0, 1)">;
}
}
</span><span style="color: rgba(0, 128, 0, 1)">//< / span > < span style = "color: RGBA (0, 128, 0, 1)" > CBC mode encryption</span>
<span style="color: rgba(0, 0, 255, 1)">this</span>.encryptData_CBC=<span style="color: rgba(0, 0, 255, 1)">function</span><span style="color: rgba(0, 0, 0, 1)">(plainText){
</span><span style="color: rgba(0, 0, 255, 1)">try</span><span style="color: rgba(0, 0, 0, 1)">{
</span><span style="color: rgba(0, 0, 255, 1)">var</span> sm4 = <span style="color: rgba(0, 0, 255, 1)">new</span><span style="color: rgba(0, 0, 0, 1)"> SM4();
</span><span style="color: rgba(0, 0, 255, 1)">var</span> ctx = <span style="color: rgba(0, 0, 255, 1)">new</span><span style="color: rgba(0, 0, 0, 1)"> SM4_Context();
ctx.isPadding </span>= <span style="color: rgba(0, 0, 255, 1)">true</span><span style="color: rgba(0, 0, 0, 1)">;
ctx.mode </span>=<span style="color: rgba(0, 0, 0, 1)"> sm4.SM4_ENCRYPT;
</span><span style="color: rgba(0, 0, 255, 1)">var</span> keyBytes = stringToByte(<span style="color: rgba(0, 0, 255, 1)">this</span><span style="color: rgba(0, 0, 0, 1)">.secretKey) ;
</span><span style="color: rgba(0, 0, 255, 1)">var</span> ivBytes= stringToByte(<span style="color: rgba(0, 0, 255, 1)">this</span><span style="color: rgba(0, 0, 0, 1)">.iv) ;
sm4.sm4_setkey_enc(ctx, keyBytes);
</span><span style="color: rgba(0, 0, 255, 1)">var</span> encrypted =<span style="color: rgba(0, 0, 0, 1)"> sm4.sm4_crypt_cbc(ctx, ivBytes, stringToByte(plainText));
</span><span style="color: rgba(0, 0, 255, 1)">var</span> cipherText =<span style="color: rgba(0, 0, 0, 1)"> base64js.fromByteArray(encrypted);
</span><span style="color: rgba(0, 0, 255, 1)">if</span> (cipherText != <span style="color: rgba(0, 0, 255, 1)">null</span> && cipherText.trim().length > 0<span style="color: rgba(0, 0, 0, 1)">)
{
cipherText.replace(</span>/(\s*|\t|\r|\n)/g, ""<span style="color: rgba(0, 0, 0, 1)">);
}
</span><span style="color: rgba(0, 0, 255, 1)">return</span><span style="color: rgba(0, 0, 0, 1)"> cipherText;
}
</span><span style="color: rgba(0, 0, 255, 1)">catch</span><span style="color: rgba(0, 0, 0, 1)"> ( e)
{
console.error(e);
</span><span style="color: rgba(0, 0, 255, 1)">return</span> <span style="color: rgba(0, 0, 255, 1)">null</span><span style="color: rgba(0, 0, 0, 1)">;
}
}
stringToByte</span>=<span style="color: rgba(0, 0, 255, 1)">function</span><span style="color: rgba(0, 0, 0, 1)">(str) {
</span><span style="color: rgba(0, 0, 255, 1)">var</span> bytes = <span style="color: rgba(0, 0, 255, 1)">new</span><span style="color: rgba(0, 0, 0, 1)"> Array();
</span><span style="color: rgba(0, 0, 255, 1)">var</span><span style="color: rgba(0, 0, 0, 1)"> len, c;
len </span>=<span style="color: rgba(0, 0, 0, 1)"> str.length;
</span><span style="color: rgba(0, 0, 255, 1)">for</span>(<span style="color: rgba(0, 0, 255, 1)">var</span> i = 0; i < len; i++<span style="color: rgba(0, 0, 0, 1)">) {
c </span>=<span style="color: rgba(0, 0, 0, 1)"> str.charCodeAt(i);
</span><span style="color: rgba(0, 0, 255, 1)">if</span>(c >= 0x010000 && c <= 0x10FFFF<span style="color: rgba(0, 0, 0, 1)">) {
bytes.push(((c </span>>> 18) & 0x07) | 0xF0<span style="color: rgba(0, 0, 0, 1)">);
bytes.push(((c </span>>> 12) & 0x3F) | 0x80<span style="color: rgba(0, 0, 0, 1)">);
bytes.push(((c </span>>> 6) & 0x3F) | 0x80<span style="color: rgba(0, 0, 0, 1)">);
bytes.push((c </span>& 0x3F) | 0x80<span style="color: rgba(0, 0, 0, 1)">);
} </span><span style="color: rgba(0, 0, 255, 1)">else</span> <span style="color: rgba(0, 0, 255, 1)">if</span>(c >= 0x000800 && c <= 0x00FFFF<span style="color: rgba(0, 0, 0, 1)">) {
bytes.push(((c </span>>> 12) & 0x0F) | 0xE0<span style="color: rgba(0, 0, 0, 1)">);
bytes.push(((c </span>>> 6) & 0x3F) | 0x80<span style="color: rgba(0, 0, 0, 1)">);
bytes.push((c </span>& 0x3F) | 0x80<span style="color: rgba(0, 0, 0, 1)">);
} </span><span style="color: rgba(0, 0, 255, 1)">else</span> <span style="color: rgba(0, 0, 255, 1)">if</span>(c >= 0x000080 && c <= 0x0007FF<span style="color: rgba(0, 0, 0, 1)">) {
bytes.push(((c </span>>> 6) & 0x1F) | 0xC0<span style="color: rgba(0, 0, 0, 1)">);
bytes.push((c </span>& 0x3F) | 0x80<span style="color: rgba(0, 0, 0, 1)">);
} </span><span style="color: rgba(0, 0, 255, 1)">else</span><span style="color: rgba(0, 0, 0, 1)"> {
bytes.push(c </span>& 0xFF<span style="color: rgba(0, 0, 0, 1)">);
}
}
</span><span style="color: rgba(0, 0, 255, 1)">return</span><span style="color: rgba(0, 0, 0, 1)"> bytes;
}
byteToString</span>=<span style="color: rgba(0, 0, 255, 1)">function</span><span style="color: rgba(0, 0, 0, 1)">(arr) {
</span><span style="color: rgba(0, 0, 255, 1)">if</span>(<span style="color: rgba(0, 0, 255, 1)">typeof</span> arr === 'string'<span style="color: rgba(0, 0, 0, 1)">) {
</span><span style="color: rgba(0, 0, 255, 1)">return</span><span style="color: rgba(0, 0, 0, 1)"> arr;
}
</span><span style="color: rgba(0, 0, 255, 1)">var</span> str = ''<span style="color: rgba(0, 0, 0, 1)">,
_arr </span>=<span style="color: rgba(0, 0, 0, 1)"> arr;
</span><span style="color: rgba(0, 0, 255, 1)">for</span>(<span style="color: rgba(0, 0, 255, 1)">var</span> i = 0; i < _arr.length; i++<span style="color: rgba(0, 0, 0, 1)">) {
</span><span style="color: rgba(0, 0, 255, 1)">var</span> one = _arr[i].toString(2<span style="color: rgba(0, 0, 0, 1)">),
v </span>= one.match(/^1+?(?=0)/<span style="color: rgba(0, 0, 0, 1)">);
</span><span style="color: rgba(0, 0, 255, 1)">if</span>(v && one.length == 8<span style="color: rgba(0, 0, 0, 1)">) {
</span><span style="color: rgba(0, 0, 255, 1)">var</span> bytesLength = v[0<span style="color: rgba(0, 0, 0, 1)">].length;
</span><span style="color: rgba(0, 0, 255, 1)">var</span> store = _arr[i].toString(2).slice(7 -<span style="color: rgba(0, 0, 0, 1)"> bytesLength);
</span><span style="color: rgba(0, 0, 255, 1)">for</span>(<span style="color: rgba(0, 0, 255, 1)">var</span> st = 1; st < bytesLength; st++<span style="color: rgba(0, 0, 0, 1)">) {
store </span>+= _arr[st + i].toString(2).slice(2<span style="color: rgba(0, 0, 0, 1)">);
}
str </span>+= String.fromCharCode(parseInt(store, 2<span style="color: rgba(0, 0, 0, 1)">));
i </span>+= bytesLength - 1<span style="color: rgba(0, 0, 0, 1)">;
} </span><span style="color: rgba(0, 0, 255, 1)">else</span><span style="color: rgba(0, 0, 0, 1)"> {
str </span>+=<span style="color: rgba(0, 0, 0, 1)"> String.fromCharCode(_arr[i]);
}
}
</span><span style="color: rgba(0, 0, 255, 1)">return</span><span style="color: rgba(0, 0, 0, 1)"> str;
}
};
2, Java backend
SM4.java
1 package cn.com.sinosoft.cas.util.sm4;
2
3 import java.io.ByteArrayInputStream;
4 import java.io.ByteArrayOutputStream;
5
6 /**
7 * SM4 encryption and decryption
8 * @author wzk
9 *
10 */
11 public class SM4 {
12 public static final int SM4_ENCRYPT = 1;
13
14 public static final int SM4_DECRYPT = 0;
15
16 private int GET_ULONG_BE(byte[] b, int i) {
17 int n = (int) (b[i] & 0xff) << 24 | (int) ((b[i + 1] & 0xff) << 16) | (int) ((b[i + 2] & 0xff) << 8)
18 | (int) (b[i + 3] & 0xff) & 0xffffffff;
19 return n;
20 }
21
22 private void PUT_ULONG_BE(int n, byte[] b, int i) {
23 b[i] = (byte) (int) (0xFF & n >> 24);
24 b[i + 1] = (byte) (int) (0xFF & n >> 16);
25 b[i + 2] = (byte) (int) (0xFF & n >> 8);
26 b[i + 3] = (byte) (int) (0xFF & n);
27 }
28
29 private int SHL(int x, int n) {
30 return (x & 0xFFFFFFFF) << n;
31 }
32
33 private int ROTL(int x, int n) {
34 return SHL(x, n) | x >> (32 - n);
35 }
36
37 public static final byte[] SboxTable = { (byte) 0xd6, (byte) 0x90, (byte) 0xe9, (byte) 0xfe, (byte) 0xcc,
38 (byte) 0xe1, 0x3d, (byte) 0xb7, 0x16, (byte) 0xb6, 0x14, (byte) 0xc2, 0x28, (byte) 0xfb, 0x2c, 0x05, 0x2b,
39 0x67, (byte) 0x9a, 0x76, 0x2a, (byte) 0xbe, 0x04, (byte) 0xc3, (byte) 0xaa, 0x44, 0x13, 0x26, 0x49,
40 (byte) 0x86, 0x06, (byte) 0x99, (byte) 0x9c, 0x42, 0x50, (byte) 0xf4, (byte) 0x91, (byte) 0xef, (byte) 0x98,
41 0x7a, 0x33, 0x54, 0x0b, 0x43, (byte) 0xed, (byte) 0xcf, (byte) 0xac, 0x62, (byte) 0xe4, (byte) 0xb3, 0x1c,
42 (byte) 0xa9, (byte) 0xc9, 0x08, (byte) 0xe8, (byte) 0x95, (byte) 0x80, (byte) 0xdf, (byte) 0x94,
43 (byte) 0xfa, 0x75, (byte) 0x8f, 0x3f, (byte) 0xa6, 0x47, 0x07, (byte) 0xa7, (byte) 0xfc, (byte) 0xf3, 0x73,
44 0x17, (byte) 0xba, (byte) 0x83, 0x59, 0x3c, 0x19, (byte) 0xe6, (byte) 0x85, 0x4f, (byte) 0xa8, 0x68, 0x6b,
45 (byte) 0x81, (byte) 0xb2, 0x71, 0x64, (byte) 0xda, (byte) 0x8b, (byte) 0xf8, (byte) 0xeb, 0x0f, 0x4b, 0x70,
46 0x56, (byte) 0x9d, 0x35, 0x1e, 0x24, 0x0e, 0x5e, 0x63, 0x58, (byte) 0xd1, (byte) 0xa2, 0x25, 0x22, 0x7c,
47 0x3b, 0x01, 0x21, 0x78, (byte) 0x87, (byte) 0xd4, 0x00, 0x46, 0x57, (byte) 0x9f, (byte) 0xd3, 0x27, 0x52,
48 0x4c, 0x36, 0x02, (byte) 0xe7, (byte) 0xa0, (byte) 0xc4, (byte) 0xc8, (byte) 0x9e, (byte) 0xea, (byte) 0xbf,
49 (byte) 0x8a, (byte) 0xd2, 0x40, (byte) 0xc7, 0x38, (byte) 0xb5, (byte) 0xa3, (byte) 0xf7, (byte) 0xf2,
50 (byte) 0xce, (byte) 0xf9, 0x61, 0x15, (byte) 0xa1, (byte) 0xe0, (byte) 0xae, 0x5d, (byte) 0xa4, (byte) 0x9b,
51 0x34, 0x1a, 0x55, (byte) 0xad, (byte) 0x93, 0x32, 0x30, (byte) 0xf5, (byte) 0x8c, (byte) 0xb1, (byte) 0xe3,
52 0x1d, (byte) 0xf6, (byte) 0xe2, 0x2e, (byte) 0x82, 0x66, (byte) 0xca, 0x60, (byte) 0xc0, 0x29, 0x23,
53 (byte) 0xab, 0x0d, 0x53, 0x4e, 0x6f, (byte) 0xd5, (byte) 0xdb, 0x37, 0x45, (byte) 0xde, (byte) 0xfd,
54 (byte) 0x8e, 0x2f, 0x03, (byte) 0xff, 0x6a, 0x72, 0x6d, 0x6c, 0x5b, 0x51, (byte) 0x8d, 0x1b, (byte) 0xaf,
55 (byte) 0x92, (byte) 0xbb, (byte) 0xdd, (byte) 0xbc, 0x7f, 0x11, (byte) 0xd9, 0x5c, 0x41, 0x1f, 0x10, 0x5a,
56 (byte) 0xd8, 0x0a, (byte) 0xc1, 0x31, (byte) 0x88, (byte) 0xa5, (byte) 0xcd, 0x7b, (byte) 0xbd, 0x2d, 0x74,
57 (byte) 0xd0, 0x12, (byte) 0xb8, (byte) 0xe5, (byte) 0xb4, (byte) 0xb0, (byte) 0x89, 0x69, (byte) 0x97, 0x4a,
58 0x0c, (byte) 0x96, 0x77, 0x7e, 0x65, (byte) 0xb9, (byte) 0xf1, 0x09, (byte) 0xc5, 0x6e, (byte) 0xc6,
59 (byte) 0x84, 0x18, (byte) 0xf0, 0x7d, (byte) 0xec, 0x3a, (byte) 0xdc, 0x4d, 0x20, 0x79, (byte) 0xee, 0x5f,
60 0x3e, (byte) 0xd7, (byte) 0xcb, 0x39, 0x48 };
61
62 public static final int[] FK = { 0xa3b1bac6, 0x56aa3350, 0x677d9197, 0xb27022dc };
63
64 public static final int[] CK = { 0x00070e15, 0x1c232a31, 0x383f464d, 0x545b6269, 0x70777e85, 0x8c939aa1, 0xa8afb6bd,
65 0xc4cbd2d9, 0xe0e7eef5, 0xfc030a11, 0x181f262d, 0x343b4249, 0x50575e65, 0x6c737a81, 0x888f969d, 0xa4abb2b9,
66 0xc0c7ced5, 0xdce3eaf1, 0xf8ff060d, 0x141b2229, 0x30373e45, 0x4c535a61, 0x686f767d, 0x848b9299, 0xa0a7aeb5,
67 0xbcc3cad1, 0xd8dfe6ed, 0xf4fb0209, 0x10171e25, 0x2c333a41, 0x484f565d, 0x646b7279 };
68
69 private byte sm4Sbox(byte inch) {
70 int i = inch & 0xFF;
71 byte retVal = SboxTable[i];
72 return retVal;
73 }
74
75 private int sm4Lt(int ka) {
76 int bb = 0;
77 int c = 0;
78 byte[] a = new byte[4];
79 byte[] b = new byte[4];
80 PUT_ULONG_BE(ka, a, 0);
81 b[0] = sm4Sbox(a[0]);
82 b[1] = sm4Sbox(a[1]);
83 b[2] = sm4Sbox(a[2]);
84 b[3] = sm4Sbox(a[3]);
85 bb = GET_ULONG_BE(b, 0);
86 c = bb ^ ROTL(bb, 2) ^ ROTL(bb, 10) ^ ROTL(bb, 18) ^ ROTL(bb, 24);
87 return c;
88 }
89
90 private int sm4F(int x0, int x1, int x2, int x3, int rk) {
91 return x0 ^ sm4Lt(x1 ^ x2 ^ x3 ^ rk);
92 }
93
94 private int sm4CalciRK(int ka) {
95 int bb = 0;
96 int rk = 0;
97 byte[] a = new byte[4];
98 byte[] b = new byte[4];
99 PUT_ULONG_BE(ka, a, 0);
100 b[0] = sm4Sbox(a[0]);
101 b[1] = sm4Sbox(a[1]);
102 b[2] = sm4Sbox(a[2]);
103 b[3] = sm4Sbox(a[3]);
104 bb = GET_ULONG_BE(b, 0);
105 rk = bb ^ ROTL(bb, 13) ^ ROTL(bb, 23);
106 return rk;
107 }
108
109 private void sm4_setkey(int[] SK, byte[] key) {
110 int[] MK = new int[4];
111 int[] k = new int[36];
112 int i = 0;
113 MK[0] = GET_ULONG_BE(key, 0);
114 MK[1] = GET_ULONG_BE(key, 4);
115 MK[2] = GET_ULONG_BE(key, 8);
116 MK[3] = GET_ULONG_BE(key, 12);
117 k[0] = MK[0] ^ (int) FK[0];
118 k[1] = MK[1] ^ (int) FK[1];
119 k[2] = MK[2] ^ (int) FK[2];
120 k[3] = MK[3] ^ (int) FK[3];
121 for (; i < 32; i++) {
122 k[(i + 4)] = (k[i] ^ sm4CalciRK(k[(i + 1)] ^ k[(i + 2)] ^ k[(i + 3)] ^ (int) CK[i]));
123 SK[i] = k[(i + 4)];
124 }
125 }
126
127 private void sm4_one_round(int[] sk, byte[] input, byte[] output) {
128 int i = 0;
129 int[] ulbuf = new int[36];
130 ulbuf[0] = GET_ULONG_BE(input, 0);
131 ulbuf[1] = GET_ULONG_BE(input, 4);
132 ulbuf[2] = GET_ULONG_BE(input, 8);
133 ulbuf[3] = GET_ULONG_BE(input, 12);
134 while (i < 32) {
135 ulbuf[(i + 4)] = sm4F(ulbuf[i], ulbuf[(i + 1)], ulbuf[(i + 2)], ulbuf[(i + 3)], sk[i]);
136 i++;
137 }
138 PUT_ULONG_BE(ulbuf[35], output, 0);
139 PUT_ULONG_BE(ulbuf[34], output, 4);
140 PUT_ULONG_BE(ulbuf[33], output, 8);
141 PUT_ULONG_BE(ulbuf[32], output, 12);
142 }
143
144 private byte[] padding(byte[] input, int mode) {
145 if (input == null) {
146 return null;
147 }
148
149 byte[] ret = (byte[]) null;
150 if (mode == SM4_ENCRYPT) {
151 int p = 16 - input.length % 16;
152 ret = new byte[input.length + p];
153 System.arraycopy(input, 0, ret, 0, input.length);
154 for (int i = 0; i < p; i++) {
155 ret[input.length + i] = (byte) p;
156 }
157 } else {
158 int p = input[input.length - 1];
159 ret = new byte[input.length - p];
160 System.arraycopy(input, 0, ret, 0, input.length - p);
161 }
162 return ret;
163 }
164
165 public void sm4_setkey_enc(SM4_Context ctx, byte[] key) throws Exception {
166 if (ctx == null) {
167 throw new Exception("ctx is null!");
168 }
169
170 if (key == null || key.length != 16) {
171 throw new Exception("key error!");
172 }
173
174 ctx.mode = SM4_ENCRYPT;
175 sm4_setkey(ctx.sk, key);
176 }
177
178 public byte[] sm4_crypt_ecb(SM4_Context ctx, byte[] input) throws Exception {
179 if (input == null) {
180 throw new Exception("input is null!");
181 }
182
183 if ((ctx.isPadding) && (ctx.mode == SM4_ENCRYPT)) {
184 input = padding(input, SM4_ENCRYPT);
185 }
186
187 int length = input.length;
188 ByteArrayInputStream bins = new ByteArrayInputStream(input);
189 ByteArrayOutputStream bous = new ByteArrayOutputStream();
190 for (; length > 0; length -= 16) {
191 byte[] in = new byte[16];
192 byte[] out = new byte[16];
193 bins.read(in);
194 sm4_one_round(ctx.sk, in, out);
195 bous.write(out);
196 }
197
198 byte[] output = bous.toByteArray();
199 if (ctx.isPadding && ctx.mode == SM4_DECRYPT) {
200 output = padding(output, SM4_DECRYPT);
201 }
202 bins.close();
203 bous.close();
204 return output;
205 }
206
207 public void sm4_setkey_dec(SM4_Context ctx, byte[] key) throws Exception {
208 if (ctx == null) {
209 throw new Exception("ctx is null!");
210 }
211
212 if (key == null || key.length != 16) {
213 throw new Exception("key error!");
214 }
215
216 int i = 0;
217 ctx.mode = SM4_DECRYPT;
218 sm4_setkey(ctx.sk, key);
219 for (i = 0; i < 16; i++) {
220 SWAP(ctx.sk, i);
221 }
222 }
223
224 private void SWAP(int[] sk, int i) {
225 int t = sk[i];
226 sk[i] = sk[(31 - i)];
227 sk[(31 - i)] = t;
228 }
229
230 public byte[] sm4_crypt_cbc(SM4_Context ctx, byte[] iv, byte[] input) throws Exception {
231 if (iv == null || iv.length != 16) {
232 throw new Exception("iv error!");
233 }
234
235 if (input == null) {
236 throw new Exception("input is null!");
237 }
238
239 if (ctx.isPadding && ctx.mode == SM4_ENCRYPT) {
240 input = padding(input, SM4_ENCRYPT);
241 }
242
243 int i = 0;
244 int length = input.length;
245 ByteArrayInputStream bins = new ByteArrayInputStream(input);
246 ByteArrayOutputStream bous = new ByteArrayOutputStream();
247 if (ctx.mode == SM4_ENCRYPT) {
248 for (; length > 0; length -= 16) {
249 byte[] in = new byte[16];
250 byte[] out = new byte[16];
251 byte[] out1 = new byte[16];
252
253 bins.read(in);
254 for (i = 0; i < 16; i++) {
255 out[i] = ((byte) (in[i] ^ iv[i]));
256 }
257 sm4_one_round(ctx.sk, out, out1);
258 System.arraycopy(out1, 0, iv, 0, 16);
259 bous.write(out1);
260 }
261 } else {
262 byte[] temp = new byte[16];
263 for (; length > 0; length -= 16) {
264 byte[] in = new byte[16];
265 byte[] out = new byte[16];
266 byte[] out1 = new byte[16];
267
268 bins.read(in);
269 System.arraycopy(in, 0, temp, 0, 16);
270 sm4_one_round(ctx.sk, in, out);
271 for (i = 0; i < 16; i++) {
272 out1[i] = ((byte) (out[i] ^ iv[i]));
273 }
274 System.arraycopy(temp, 0, iv, 0, 16);
275 bous.write(out1);
276 }
277 }
278
279 byte[] output = bous.toByteArray();
280 if (ctx.isPadding && ctx.mode == SM4_DECRYPT) {
281 output = padding(output, SM4_DECRYPT);
282 }
283 bins.close();
284 bous.close();
285 return output;
286 }
287
288 }
SM4_Context.java
1 package cn.com.sinosoft.cas.util.sm4;
2
3 /**
4 * SM4 encryption and decryption
5 * @author wzk
6 *
7 */
8 public class SM4_Context {
9 public int mode;
10
11 public int[] sk;
12
13 public boolean isPadding;
14
15 public SM4_Context() {
16 this.mode = 1;
17 this.isPadding = true;
18 this.sk = new int[32];
19 }
20 }
Util.java
1 package cn.com.sinosoft.cas.util.sm4;
2
3 import java.math.BigInteger;
4
5 /**
6 * SM4 encryption and decryption tool class
7 * @author wzk
8 *
9 */
10 public class Util {
11 /**
12 * shaping and converting into byte stream (byte array) data transmitted by the network
13 *
14 * @param num
15 * one integer data
16 * @ return 4-byte array
17 */
18 public static byte[] intToBytes(int num) {
19 byte[] bytes = new byte[4];
20 bytes[0] = (byte) (0xff & (num >> 0));
21 bytes[1] = (byte) (0xff & (num >> 8));
22 bytes[2] = (byte) (0xff & (num >> 16));
23 bytes[3] = (byte) (0xff & (num >> 24));
24 return bytes;
25 }
26
27 /**
28 * convert four bytes of byte data into an integer data
29 *
30 * @param bytes
31 * 4-byte byte array
32 * @ return an integer data
33 */
34 public static int byteToInt(byte[] bytes) {
35 int num = 0;
36 int temp;
37 temp = (0x000000ff & (bytes[0])) << 0;
38 num = num | temp;
39 temp = (0x000000ff & (bytes[1])) << 8;
40 num = num | temp;
41 temp = (0x000000ff & (bytes[2])) << 16;
42 num = num | temp;
43 temp = (0x000000ff & (bytes[3])) << 24;
44 num = num | temp;
45 return num;
46 }
47
48 /**
49 * long shaping is converted into byte stream (byte array) data transmitted over the network
50 *
51 * @param num
52 * one long integer data
53 * @ return 4-byte array
54 */
55 public static byte[] longToBytes(long num) {
56 byte[] bytes = new byte[8];
57 for (int i = 0; i < 8; i++) {
58 bytes[i] = (byte) (0xff & (num >> (i * 8)));
59 }
60
61 return bytes;
62 }
63
64 /**
65 * large number conversion byte stream (byte array) data
66 *
67 * @param n
68 * @return
69 */
70 public static byte[] byteConvert32Bytes(BigInteger n) {
71 byte tmpd[] = (byte[]) null;
72 if (n == null) {
73 return null;
74 }
75
76 if (n.toByteArray().length == 33) {
77 tmpd = new byte[32];
78 System.arraycopy(n.toByteArray(), 1, tmpd, 0, 32);
79 } else if (n.toByteArray().length == 32) {
80 tmpd = n.toByteArray();
81 } else {
82 tmpd = new byte[32];
83 for (int i = 0; i < 32 - n.toByteArray().length; i++) {
84 tmpd[i] = 0;
85 }
86 System.arraycopy(n.toByteArray(), 0, tmpd, 32 - n.toByteArray().length, n.toByteArray().length);
87 }
88 return tmpd;
89 }
90
91 /**
92 * convert byte stream (byte array) data to large number
93 *
94 * @param b
95 * @return
96 */
97 public static BigInteger byteConvertInteger(byte[] b) {
98 if (b[0] < 0) {
99 byte[] temp = new byte[b.length + 1];
100 temp[0] = 0;
101 System.arraycopy(b, 0, temp, 1, b.length);
102 return new BigInteger(temp);
103 }
104 return new BigInteger(b);
105 }
106
107 /**
108 * get value from byte array (hexadecimal digit)
109 *
110 * @param bytes
111 * @return
112 */
113 public static String getHexString(byte[] bytes) {
114 return getHexString(bytes, true);
115 }
116
117 /**
118 * get value from byte array (hexadecimal digit)
119 *
120 * @param bytes
121 * @param upperCase
122 * @return
123 */
124 public static String getHexString(byte[] bytes, boolean upperCase) {
125 String ret = "";
126 for (int i = 0; i < bytes.length; i++) {
127 ret += Integer.toString((bytes[i] & 0xff) + 0x100, 16).substring(1);
128 }
129 return upperCase ? ret.toUpperCase() : ret;
130 }
131
132 /**
133 * print hex string
134 *
135 * @param bytes
136 */
137 public static void printHexString(byte[] bytes) {
138 for (int i = 0; i < bytes.length; i++) {
139 String hex = Integer.toHexString(bytes[i] & 0xFF);
140 if (hex.length() == 1) {
141 hex = '0' + hex;
142 }
143 System.out.print("0x" + hex.toUpperCase() + ",");
144 }
145 System.out.println("");
146 }
147
148 /**
149 * Convert hex string to byte[]
150 *
151 * @param hexString
152 * the hex string
153 * @return byte[]
154 */
155 public static byte[] hexStringToBytes(String hexString) {
156 if (hexString == null || hexString.equals("")) {
157 return null;
158 }
159
160 hexString = hexString.toUpperCase();
161 int length = hexString.length() / 2;
162 char[] hexChars = hexString.toCharArray();
163 byte[] d = new byte[length];
164 for (int i = 0; i < length; i++) {
165 int pos = i * 2;
166 d[i] = (byte) (charToByte(hexChars[pos]) << 4 | charToByte(hexChars[pos + 1]));
167 }
168 return d;
169 }
170
171 /**
172 * Convert char to byte
173 *
174 * @param c
175 * char
176 * @return byte
177 */
178 public static byte charToByte(char c) {
179 return (byte) "0123456789ABCDEF".indexOf(c);
180 }
181
182 /**
183 * lowercase character array used to establish the output of hexadecimal characters
184 */
185 private static final char[] DIGITS_LOWER = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd',
186 'e', 'f' };
187
188 /**
189 * uppercase character array used to establish the output of hexadecimal characters
190 */
191 private static final char[] DIGITS_UPPER = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D',
192 'E', 'F' };
193
194 /**
195 * convert byte array to hexadecimal character array
196 *
197 * @param data
198 * byte[]
199 * @ return hex char []
200 */
201 public static char[] encodeHex(byte[] data) {
202 return encodeHex(data, true);
203 }
204
205 /**
206 * convert byte array to hexadecimal character array
207 *
208 * @param data
209 * byte[]
210 * @param toLowerCase
211 * < code > true < / code > is converted to lowercase format, < code > false < / code > is converted to uppercase format
212 * @ return hex char []
213 */
214 public static char[] encodeHex(byte[] data, boolean toLowerCase) {
215 return encodeHex(data, toLowerCase ? DIGITS_LOWER : DIGITS_UPPER);
216 }
217
218 /**
219 * convert byte array to hexadecimal character array
220 *
221 * @param data
222 * byte[]
223 * @param toDigits
224 * char [] for control output
225 * @ return hex char []
226 */
227 protected static char[] encodeHex(byte[] data, char[] toDigits) {
228 int l = data.length;
229 char[] out = new char[l << 1];
230 // two characters form the hex value.
231 for (int i = 0, j = 0; i < l; i++) {
232 out[j++] = toDigits[(0xF0 & data[i]) >>> 4];
233 out[j++] = toDigits[0x0F & data[i]];
234 }
235 return out;
236 }
237
238 /**
239 * convert byte array to hexadecimal string
240 *
241 * @param data
242 * byte[]
243 * @ return hex String
244 */
245 public static String encodeHexString(byte[] data) {
246 return encodeHexString(data, true);
247 }
248
249 /**
250 * convert byte array to hexadecimal string
251 *
252 * @param data
253 * byte[]
254 * @param toLowerCase
255 * < code > true < / code > is converted to lowercase format, < code > false < / code > is converted to uppercase format
256 * @ return hex String
257 */
258 public static String encodeHexString(byte[] data, boolean toLowerCase) {
259 return encodeHexString(data, toLowerCase ? DIGITS_LOWER : DIGITS_UPPER);
260 }
261
262 /**
263 * convert byte array to hexadecimal string
264 *
265 * @param data
266 * byte[]
267 * @param toDigits
268 * char [] for control output
269 * @ return hex String
270 */
271 protected static String encodeHexString(byte[] data, char[] toDigits) {
272 return new String(encodeHex(data, toDigits));
273 }
274
275 /**
276 * convert hexadecimal character array to byte array
277 *
278 * @param data
279 * hex char []
280 * @return byte[]
281 * @throws RuntimeException
282 * if the source hexadecimal character array is an odd length, a runtime exception will be thrown
283 */
284 public static byte[] decodeHex(char[] data) {
285 int len = data.length;
286
287 if ((len & 0x01) != 0) {
288 throw new RuntimeException("Odd number of characters.");
289 }
290
291 byte[] out = new byte[len >> 1];
292
293 // two characters form the hex value.
294 for (int i = 0, j = 0; j < len; i++) {
295 int f = toDigit(data[j], j) << 4;
296 j++;
297 f = f | toDigit(data[j], j);
298 j++;
299 out[i] = (byte) (f & 0xFF);
300 }
301
302 return out;
303 }
304
305 /**
306 * converts hexadecimal characters to an integer
307 *
308 * @param ch
309 * hex char
310 * @param index
311 * position of hexadecimal characters in character array
312 * @ return an integer
313 * @throws RuntimeException
314 * throw a runtime exception when ch is not a legal hexadecimal character
315 */
316 protected static int toDigit(char ch, int index) {
317 int digit = Character.digit(ch, 16);
318 if (digit == -1) {
319 throw new RuntimeException("Illegal hexadecimal character " + ch + " at index " + index);
320 }
321 return digit;
322 }
323
324 /**
325 * numeric string to ASCII string
326 *
327 * @param String
328 * string
329 * @ return ascii string
330 */
331 public static String StringToAsciiString(String content) {
332 String result = "";
333 int max = content.length();
334 for (int i = 0; i < max; i++) {
335 char c = content.charAt(i);
336 String b = Integer.toHexString(c);
337 result = result + b;
338 }
339 return result;
340 }
341
342 /**
343 * hex to string
344 *
345 * @param hexString
346 * hexadecimal string
347 * @param encodeType
348 * encoding type 4: Unicode, 2: normal encoding
349 * @ return string
350 */
351 public static String hexStringToString(String hexString, int encodeType) {
352 String result = "";
353 int max = hexString.length() / encodeType;
354 for (int i = 0; i < max; i++) {
355 char c = (char) hexStringToAlgorism(hexString.substring(i * encodeType, (i + 1) * encodeType));
356 result += c;
357 }
358 return result;
359 }
360
361 /**
362 * hexadecimal string packed decimal
363 *
364 * @param hex
365 * hex string
366 * @ return decimal value
367 */
368 public static int hexStringToAlgorism(String hex) {
369 hex = hex.toUpperCase();
370 int max = hex.length();
371 int result = 0;
372 for (int i = max; i > 0; i--) {
373 char c = hex.charAt(i - 1);
374 int algorism = 0;
375 if (c >= '0' && c <= '9') {
376 algorism = c - '0';
377 } else {
378 algorism = c - 55;
379 }
380 result += Math.pow(16, max - i) * algorism;
381 }
382 return result;
383 }
384
385 /**
386 * 16 to binary
387 *
388 * @param hex
389 * hex string
390 * @ return binary string
391 */
392 public static String hexStringToBinary(String hex) {
393 hex = hex.toUpperCase();
394 String result = "";
395 int max = hex.length();
396 for (int i = 0; i < max; i++) {
397 char c = hex.charAt(i);
398 switch (c) {
399 case '0':
400 result += "0000";
401 break;
402 case '1':
403 result += "0001";
404 break;
405 case '2':
406 result += "0010";
407 break;
408 case '3':
409 result += "0011";
410 break;
411 case '4':
412 result += "0100";
413 break;
414 case '5':
415 result += "0101";
416 break;
417 case '6':
418 result += "0110";
419 break;
420 case '7':
421 result += "0111";
422 break;
423 case '8':
424 result += "1000";
425 break;
426 case '9':
427 result += "1001";
428 break;
429 case 'A':
430 result += "1010";
431 break;
432 case 'B':
433 result += "1011";
434 break;
435 case 'C':
436 result += "1100";
437 break;
438 case 'D':
439 result += "1101";
440 break;
441 case 'E':
442 result += "1110";
443 break;
444 case 'F':
445 result += "1111";
446 break;
447 }
448 }
449 return result;
450 }
451
452 /**
453 * ascii string to numeric string
454 *
455 * @param String
456 * ascii string
457 * @ return string
458 */
459 public static String AsciiStringToString(String content) {
460 String result = "";
461 int length = content.length() / 2;
462 for (int i = 0; i < length; i++) {
463 String c = content.substring(i * 2, i * 2 + 2);
464 int a = hexStringToAlgorism(c);
465 char b = (char) a;
466 String d = String.valueOf(b);
467 result += d;
468 }
469 return result;
470 }
471
472 /**
473 * converts decimal to a hexadecimal string of the specified length
474 *
475 * @param algorism
476 * int decimal digits
477 * @param maxLength
478 * hexadecimal string length after int conversion
479 * @ return string hexadecimal string after conversion
480 */
481 public static String algorismToHexString(int algorism, int maxLength) {
482 String result = "";
483 result = Integer.toHexString(algorism);
484
485 if (result.length() % 2 == 1) {
486 result = "0" + result;
487 }
488 return patchHexString(result.toUpperCase(), maxLength);
489 }
490
491 /**
492 * byte array to normal string (ASCII corresponding character)
493 *
494 * @param bytearray
495 * byte[]
496 * @return String
497 */
498 public static String byteToString(byte[] bytearray) {
499 String result = "";
500 char temp;
501
502 int length = bytearray.length;
503 for (int i = 0; i < length; i++) {
504 temp = (char) bytearray[i];
505 result += temp;
506 }
507 return result;
508 }
509
510 /**
511 * binary string to decimal
512 *
513 * @param binary
514 * binary string
515 * @ return decimal value
516 */
517 public static int binaryToAlgorism(String binary) {
518 int max = binary.length();
519 int result = 0;
520 for (int i = max; i > 0; i--) {
521 char c = binary.charAt(i - 1);
522 int algorism = c - '0';
523 result += Math.pow(2, max - i) * algorism;
524 }
525 return result;
526 }
527
528 /**
529 * convert decimal to hexadecimal string
530 *
531 * @param algorism
532 * int decimal number
533 * @ return string hexadecimal string
534 */
535 public static String algorismToHEXString(int algorism) {
536 String result = "";
537 result = Integer.toHexString(algorism);
538
539 if (result.length() % 2 == 1) {
540 result = "0" + result;
541
542 }
543 result = result.toUpperCase();
544
545 return result;
546 }
547
548 /**
549 * hex string is preceded by 0, which is mainly used for insufficient length digits.
550 *
551 * @param str
552 * string hexadecimal string with supplementary length required
553 * @param maxLength
554 * int length of hexadecimal string after complement
555 * @ return supplementary result
556 */
557 static public String patchHexString(String str, int maxLength) {
558 String temp = "";
559 for (int i = 0; i < maxLength - str.length(); i++) {
560 temp = "0" + temp;
561 }
562 str = (temp + str).substring(0, maxLength);
563 return str;
564 }
565
566 /**
567 * convert a string to int
568 *
569 * @param s
570 * string string to convert
571 * @param defaultInt
572 * int if an exception occurs, the number returned by default
573 * @param radix
574 * int what is the base of the string to be converted, such as 16 8 10
575 * @ return int converted number
576 */
577 public static int parseToInt(String s, int defaultInt, int radix) {
578 int i = 0;
579 try {
580 i = Integer.parseInt(s, radix);
581 } catch (NumberFormatException ex) {
582 i = defaultInt;
583 }
584 return i;
585 }
586
587 /**
588 * converts a decimal numeric string to int
589 *
590 * @param s
591 * string the string to convert
592 * @param defaultInt
593 * int if an exception occurs, the number returned by default
594 * @ return int converted number
595 */
596 public static int parseToInt(String s, int defaultInt) {
597 int i = 0;
598 try {
599 i = Integer.parseInt(s);
600 } catch (NumberFormatException ex) {
601 i = defaultInt;
602 }
603 return i;
604 }
605
606 /**
607 * convert hex string to byte array
608 *
609 * @return the array of byte
610 */
611 public static byte[] hexToByte(String hex) throws IllegalArgumentException {
612 if (hex.length() % 2 != 0) {
613 throw new IllegalArgumentException();
614 }
615 char[] arr = hex.toCharArray();
616 byte[] b = new byte[hex.length() / 2];
617 for (int i = 0, j = 0, l = hex.length(); i < l; i++, j++) {
618 String swap = "" + arr[i++] + arr[i];
619 int byteint = Integer.parseInt(swap, 16) & 0xFF;
620 b[j] = new Integer(byteint).byteValue();
621 }
622 return b;
623 }
624
625 /**
626 * byte array converted to hexadecimal string
627 *
628 * @param b
629 * byte [] byte array to be converted
630 * @ return string hex string
631 */
632 public static String byteToHex(byte b[]) {
633 if (b == null) {
634 throw new IllegalArgumentException("Argument b ( byte array ) is null! ");
635 }
636 String hs = "";
637 String stmp = "";
638 for (int n = 0; n < b.length; n++) {
639 stmp = Integer.toHexString(b[n] & 0xff);
640 if (stmp.length() == 1) {
641 hs = hs + "0" + stmp;
642 } else {
643 hs = hs + stmp;
644 }
645 }
646 return hs.toUpperCase();
647 }
648
649 public static byte[] subByte(byte[] input, int startIndex, int length) {
650 byte[] bt = new byte[length];
651 for (int i = 0; i < length; i++) {
652 bt[i] = input[i + startIndex];
653 }
654 return bt;
655 }
656 }
SM4Utils.java
package cn.com.sinosoft.cas.util.sm4;
import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;
import java.io.UnsupportedEncodingException;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
- sm4 encryption and decryption
- CBC and ECB modes
- @author wzk
/
@SuppressWarnings("restriction")
public class SM4Utils {
/**
*Consistent with the front-end key
/
private static String secretKey = "11sade343f";
/**
*Consistent with front-end iv
*/
private static String iv = "3evfgt65334";
</span><span style="color: rgba(0, 0, 255, 1)">private</span> <span style="color: rgba(0, 0, 255, 1)">static</span> String UTF_8 = "UTF-8"<span style="color: rgba(0, 0, 0, 1)">;
</span><span style="color: rgba(0, 0, 255, 1)">private</span> <span style="color: rgba(0, 0, 255, 1)">static</span> <span style="color: rgba(0, 0, 255, 1)">final</span> <span style="color: rgba(0, 0, 255, 1)">boolean</span> hexString = <span style="color: rgba(0, 0, 255, 1)">false</span><span style="color: rgba(0, 0, 0, 1)">;
</span><span style="color: rgba(0, 0, 255, 1)">public</span><span style="color: rgba(0, 0, 0, 1)"> SM4Utils() {
}
</span><span style="color: rgba(0, 128, 0, 1)">//< / span > < span style = "color: RGBA (0, 128, 0, 1)" > ECB mode encryption</span>
<span style="color: rgba(0, 0, 255, 1)">public</span> <span style="color: rgba(0, 0, 255, 1)">static</span><span style="color: rgba(0, 0, 0, 1)"> String encryptData_ECB(String plainText) {
</span><span style="color: rgba(0, 0, 255, 1)">try</span><span style="color: rgba(0, 0, 0, 1)"> {
SM4_Context ctx </span>= <span style="color: rgba(0, 0, 255, 1)">new</span><span style="color: rgba(0, 0, 0, 1)"> SM4_Context();
ctx.isPadding </span>= <span style="color: rgba(0, 0, 255, 1)">true</span><span style="color: rgba(0, 0, 0, 1)">;
ctx.mode </span>=<span style="color: rgba(0, 0, 0, 1)"> SM4.SM4_ENCRYPT;
</span><span style="color: rgba(0, 0, 255, 1)">byte</span><span style="color: rgba(0, 0, 0, 1)">[] keyBytes;
keyBytes </span>=<span style="color: rgba(0, 0, 0, 1)"> secretKey.getBytes();
SM4 sm4 </span>= <span style="color: rgba(0, 0, 255, 1)">new</span><span style="color: rgba(0, 0, 0, 1)"> SM4();
sm4.sm4_setkey_enc(ctx, keyBytes);
</span><span style="color: rgba(0, 0, 255, 1)">byte</span>[] encrypted =<span style="color: rgba(0, 0, 0, 1)"> sm4.sm4_crypt_ecb(ctx, plainText.getBytes(UTF_8));
String cipherText </span>= <span style="color: rgba(0, 0, 255, 1)">new</span><span style="color: rgba(0, 0, 0, 1)"> BASE64Encoder().encode(encrypted);
</span><span style="color: rgba(0, 0, 255, 1)">if</span> (cipherText != <span style="color: rgba(0, 0, 255, 1)">null</span> && cipherText.trim().length() > 0<span style="color: rgba(0, 0, 0, 1)">) {
Pattern p </span>= Pattern.compile("\\s*|\t|\r|\n"<span style="color: rgba(0, 0, 0, 1)">);
Matcher m </span>=<span style="color: rgba(0, 0, 0, 1)"> p.matcher(cipherText);
cipherText </span>= m.replaceAll(""<span style="color: rgba(0, 0, 0, 1)">);
}
</span><span style="color: rgba(0, 0, 255, 1)">return</span><span style="color: rgba(0, 0, 0, 1)"> cipherText;
} </span><span style="color: rgba(0, 0, 255, 1)">catch</span><span style="color: rgba(0, 0, 0, 1)"> (Exception e) {
e.printStackTrace();
</span><span style="color: rgba(0, 0, 255, 1)">return</span> <span style="color: rgba(0, 0, 255, 1)">null</span><span style="color: rgba(0, 0, 0, 1)">;
}
}
</span><span style="color: rgba(0, 128, 0, 1)">//< / span > < span style = "color: RGBA (0, 128, 0, 1)" > ECB mode decryption</span>
<span style="color: rgba(0, 0, 255, 1)">public</span> <span style="color: rgba(0, 0, 255, 1)">static</span><span style="color: rgba(0, 0, 0, 1)"> String decryptData_ECB(String cipherText) {
</span><span style="color: rgba(0, 0, 255, 1)">try</span><span style="color: rgba(0, 0, 0, 1)"> {
SM4_Context ctx </span>= <span style="color: rgba(0, 0, 255, 1)">new</span><span style="color: rgba(0, 0, 0, 1)"> SM4_Context();
ctx.isPadding </span>= <span style="color: rgba(0, 0, 255, 1)">true</span><span style="color: rgba(0, 0, 0, 1)">;
ctx.mode </span>=<span style="color: rgba(0, 0, 0, 1)"> SM4.SM4_DECRYPT;
</span><span style="color: rgba(0, 0, 255, 1)">byte</span><span style="color: rgba(0, 0, 0, 1)">[] keyBytes;
keyBytes </span>=<span style="color: rgba(0, 0, 0, 1)"> secretKey.getBytes();
SM4 sm4 </span>= <span style="color: rgba(0, 0, 255, 1)">new</span><span style="color: rgba(0, 0, 0, 1)"> SM4();
sm4.sm4_setkey_dec(ctx, keyBytes);
</span><span style="color: rgba(0, 0, 255, 1)">byte</span>[] decrypted = sm4.sm4_crypt_ecb(ctx, <span style="color: rgba(0, 0, 255, 1)">new</span><span style="color: rgba(0, 0, 0, 1)"> BASE64Decoder().decodeBuffer(cipherText));
</span><span style="color: rgba(0, 0, 255, 1)">return</span> <span style="color: rgba(0, 0, 255, 1)">new</span><span style="color: rgba(0, 0, 0, 1)"> String(decrypted, UTF_8);
} </span><span style="color: rgba(0, 0, 255, 1)">catch</span><span style="color: rgba(0, 0, 0, 1)"> (Exception e) {
e.printStackTrace();
</span><span style="color: rgba(0, 0, 255, 1)">return</span> <span style="color: rgba(0, 0, 255, 1)">null</span><span style="color: rgba(0, 0, 0, 1)">;
}
}
</span><span style="color: rgba(0, 128, 0, 1)">//< / span > < span style = "color: RGBA (0, 128, 0, 1)" > CBC mode encryption</span>
<span style="color: rgba(0, 0, 255, 1)">public</span> <span style="color: rgba(0, 0, 255, 1)">static</span><span style="color: rgba(0, 0, 0, 1)"> String encryptData_CBC(String plainText) {
</span><span style="color: rgba(0, 0, 255, 1)">try</span><span style="color: rgba(0, 0, 0, 1)"> {
SM4_Context ctx </span>= <span style="color: rgba(0, 0, 255, 1)">new</span><span style="color: rgba(0, 0, 0, 1)"> SM4_Context();
ctx.isPadding </span>= <span style="color: rgba(0, 0, 255, 1)">true</span><span style="color: rgba(0, 0, 0, 1)">;
ctx.mode </span>=<span style="color: rgba(0, 0, 0, 1)"> SM4.SM4_ENCRYPT;
</span><span style="color: rgba(0, 0, 255, 1)">byte</span><span style="color: rgba(0, 0, 0, 1)">[] keyBytes;
</span><span style="color: rgba(0, 0, 255, 1)">byte</span><span style="color: rgba(0, 0, 0, 1)">[] ivBytes;
keyBytes </span>=<span style="color: rgba(0, 0, 0, 1)"> secretKey.getBytes();
ivBytes </span>=<span style="color: rgba(0, 0, 0, 1)"> iv.getBytes();
SM4 sm4 </span>= <span style="color: rgba(0, 0, 255, 1)">new</span><span style="color: rgba(0, 0, 0, 1)"> SM4();
sm4.sm4_setkey_enc(ctx, keyBytes);
</span><span style="color: rgba(0, 0, 255, 1)">byte</span>[] encrypted =<span style="color: rgba(0, 0, 0, 1)"> sm4.sm4_crypt_cbc(ctx, ivBytes, plainText.getBytes(UTF_8));
String cipherText </span>= <span style="color: rgba(0, 0, 255, 1)">new</span><span style="color: rgba(0, 0, 0, 1)"> BASE64Encoder().encode(encrypted);
</span><span style="color: rgba(0, 0, 255, 1)">if</span> (cipherText != <span style="color: rgba(0, 0, 255, 1)">null</span> && cipherText.trim().length() > 0<span style="color: rgba(0, 0, 0, 1)">) {
Pattern p </span>= Pattern.compile("\\s*|\t|\r|\n"<span style="color: rgba(0, 0, 0, 1)">);
Matcher m </span>=<span style="color: rgba(0, 0, 0, 1)"> p.matcher(cipherText);
cipherText </span>= m.replaceAll(""<span style="color: rgba(0, 0, 0, 1)">);
}
</span><span style="color: rgba(0, 0, 255, 1)">return</span><span style="color: rgba(0, 0, 0, 1)"> cipherText;
} </span><span style="color: rgba(0, 0, 255, 1)">catch</span><span style="color: rgba(0, 0, 0, 1)"> (Exception e) {
e.printStackTrace();
</span><span style="color: rgba(0, 0, 255, 1)">return</span> <span style="color: rgba(0, 0, 255, 1)">null</span><span style="color: rgba(0, 0, 0, 1)">;
}
}
</span><span style="color: rgba(0, 128, 0, 1)">//< / span > < span style = "color: RGBA (0, 128, 0, 1)" > CBC mode decryption</span>
<span style="color: rgba(0, 0, 255, 1)">public</span> <span style="color: rgba(0, 0, 255, 1)">static</span><span style="color: rgba(0, 0, 0, 1)"> String decryptData_CBC(String cipherText) {
</span><span style="color: rgba(0, 0, 255, 1)">try</span><span style="color: rgba(0, 0, 0, 1)"> {
SM4_Context ctx </span>= <span style="color: rgba(0, 0, 255, 1)">new</span><span style="color: rgba(0, 0, 0, 1)"> SM4_Context();
ctx.isPadding </span>= <span style="color: rgba(0, 0, 255, 1)">true</span><span style="color: rgba(0, 0, 0, 1)">;
ctx.mode </span>=<span style="color: rgba(0, 0, 0, 1)"> SM4.SM4_DECRYPT;
</span><span style="color: rgba(0, 0, 255, 1)">byte</span><span style="color: rgba(0, 0, 0, 1)">[] keyBytes;
</span><span style="color: rgba(0, 0, 255, 1)">byte</span><span style="color: rgba(0, 0, 0, 1)">[] ivBytes;
</span><span style="color: rgba(0, 0, 255, 1)">if</span><span style="color: rgba(0, 0, 0, 1)"> (hexString) {
keyBytes </span>=<span style="color: rgba(0, 0, 0, 1)"> Util.hexStringToBytes(secretKey);
ivBytes </span>=<span style="color: rgba(0, 0, 0, 1)"> Util.hexStringToBytes(iv);
} </span><span style="color: rgba(0, 0, 255, 1)">else</span><span style="color: rgba(0, 0, 0, 1)"> {
keyBytes </span>=<span style="color: rgba(0, 0, 0, 1)"> secretKey.getBytes();
ivBytes </span>=<span style="color: rgba(0, 0, 0, 1)"> iv.getBytes();
}
SM4 sm4 </span>= <span style="color: rgba(0, 0, 255, 1)">new</span><span style="color: rgba(0, 0, 0, 1)"> SM4();
sm4.sm4_setkey_dec(ctx, keyBytes);
</span><span style="color: rgba(0, 0, 255, 1)">byte</span>[] decrypted = sm4.sm4_crypt_cbc(ctx, ivBytes, <span style="color: rgba(0, 0, 255, 1)">new</span><span style="color: rgba(0, 0, 0, 1)"> BASE64Decoder().decodeBuffer(cipherText));
</span><span style="color: rgba(0, 0, 255, 1)">return</span> <span style="color: rgba(0, 0, 255, 1)">new</span><span style="color: rgba(0, 0, 0, 1)"> String(decrypted, UTF_8);
} </span><span style="color: rgba(0, 0, 255, 1)">catch</span><span style="color: rgba(0, 0, 0, 1)"> (Exception e) {
e.printStackTrace();
</span><span style="color: rgba(0, 0, 255, 1)">return</span> <span style="color: rgba(0, 0, 255, 1)">null</span><span style="color: rgba(0, 0, 0, 1)">;
}
}
</span><span style="color: rgba(0, 0, 255, 1)">public</span> <span style="color: rgba(0, 0, 255, 1)">static</span> <span style="color: rgba(0, 0, 255, 1)">void</span> main(String[] args) <span style="color: rgba(0, 0, 255, 1)">throws</span><span style="color: rgba(0, 0, 0, 1)"> UnsupportedEncodingException {
String plainText </span>= "Zhongke soft"<span style="color: rgba(0, 0, 0, 1)">;
String cipherText </span>=<span style="color: rgba(0, 0, 0, 1)"> SM4Utils.encryptData_ECB(plainText);
System.out.println(</span>"ECB Pattern encryption ciphertext: " +<span style="color: rgba(0, 0, 0, 1)"> cipherText);
plainText </span>=<span style="color: rgba(0, 0, 0, 1)"> SM4Utils.decryptData_ECB(cipherText);
System.out.println(</span>"ECB Mode decryption plaintext: " +<span style="color: rgba(0, 0, 0, 1)"> plainText);
cipherText </span>=<span style="color: rgba(0, 0, 0, 1)"> SM4Utils.encryptData_CBC(plainText);
System.out.println(</span>"CBC Pattern encryption ciphertext: " +<span style="color: rgba(0, 0, 0, 1)"> cipherText);
plainText </span>=<span style="color: rgba(0, 0, 0, 1)"> SM4Utils.decryptData_CBC(cipherText);
System.out.println(</span>"CBC Mode decryption plaintext: " +<span style="color: rgba(0, 0, 0, 1)"> plainText);
}
}
III. test
1. CBC mode (double salt, safer)
front end:
var sm4=new SM4Util();
sm4.encryptData_CBC('');
Back end:
SM4Utils.decryptData_CBC("");
2. ECB mode
front end:
var sm4=new SM4Util();
sm4.encryptData_ECB('');
Back end:
SM4Utils.decryptData_ECB("");