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文檔簡介
寫程序時(shí)一般是通過form表單或者ajax方式將參數(shù)提交到服務(wù)器進(jìn)行驗(yàn)
證，如何防止提交的請求不被抓包后串改，雖然無法說絕對安全卻給非法提交
提高了難度，本篇采用jsencypt在前端進(jìn)行加密的并且用C#在后端解密，在
投票提交分?jǐn)?shù)等H5應(yīng)用上可以使用的上，并且進(jìn)行簡單的封裝。
l.demo
IH52劫后右出左度一卜，你就冗道且切止式I旦邊玄電.三運(yùn)后臺(tái)W懣售公眾￥色
Texttoencrypt:
name:
password(
submit
<!DOCTYPEhtml>
<htmlxmlns="hlIp:〃www.w3.org/1999/xhtnil/z>
<hoad>
<metahttp-equiv="Content-Type"content="text/html;charset=utf-8”/>
<scriptsrc=，7Scripts/jqucry-l.10.2.min.js，z></script>
<scriptsrc=，7Scripts/JsEncryptHelper.js"></script>
</head>
<body>
</body>
</html>
<body>
<formid=/，forml>
<div>
<label>PublicKey</labelXbr/>
<labelfor="input/'>Texltoencrypt:</label><br/>
name:<inputid="uscrnamo"namc=/，usernamc/，type=，，textz，></input><br
/>
password:<inputid="passwd"name=/，passwd/，type=，，passworcl，/></input><
br/>
<inputid=，/testme/，type="button"value="submit"/Xbr/>
</div>
</form>
</body>
<script>
$(function(){
$C#testme，).click(function(){
console,log("開始發(fā)送數(shù)據(jù)請求”)；
vardata={);
data,username=$('#usernamc，).val();
data,passwd=$('#passwd，).val();
console,log("加密前數(shù)據(jù)：“，JSON.stringify(data));
varresult=$.encryptRequest({
data:data
})；
console.log("加密后數(shù)據(jù)："，JSON.stringify(result));
$.ajax({
url:r/Yhz/TestDecrypt，,
dataType:'jsonp',
type:*post*,
data:result,
success:function(res)
(
console.log("服務(wù)端解密成功："，JSON.stringify(res));
)
})
})；
))；
</script>
輸入賬號(hào)密碼后加密后到服務(wù)端解密后返回
2.客戶端
寫一個(gè)JsEncryptHelper.js以后需要加密的頁面都可以應(yīng)用
varJSEncryptExports=();
(function(exports){
/*
*提示：該行代碼過長，系統(tǒng)自動(dòng)注釋不進(jìn)行高亮。一健復(fù)制會(huì)移除系統(tǒng)注釋
*functionBiginteger(a,b,c){null!=a&&("number'==typeofa?this.from
Number(a,b,c):null==b&&"string"!=typeofa?this.fromString(a,256):
this.fromString(a,b))}functionnbi(){returnnewBiginteger(null)}functi
onami(a,b,c,d,e,f)(for(;—f>=0;){varg=b*this[a++]+c[d]+
e;e=Math.floor(g/67108864),c[d++]=67108863&g}returne}functionam
2(a,b,c,d,e,f){for(varg=32767&b,h=b?15;-f>=0;){vari=
32767&this[a],j=this[a++]?15,k=h*i+j*g;i=g*i+((32767&
k)?15)+c[d]+(1073741823&e),e=(i?>30)+(k?>15)+h*j+(e
?>30),c[d++]=1073741823&i}returne}functionam3(a,b,c,d,e,f)
{for(varg=16383&b,h=b?14：—f>=0:){vari=16383&this[a],j
=this[a++]?14,k=h*i+j*g;i=g*i+((16383&k)<<14)+c[c]+
e,e=(i?28)+(k?14)+h*j,c[d++]=268435455&i}returne}funct
ionint2char(a){returnBIRM.charAt(a)}functionintAt(a,b){varc=BIRC
[a.charCodeAt(b)];returnnul1==c?-1:c}functionbnpCopyTo(a){for(var
b=this,t-1;b>=0;-b)a[b]=thisFb];a.t=this,t,a.s=this,s}func
tionbnpFromlnt(a){this,t=1,this,s=0>a?-1:0,a>0?this[0]=a:
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rnb.fromlnt(a),b}functionbnpFromString(a,b){varc;if(16==b)c=4;
elseif(8==b)c=3;elseif(256==b)c=8;elseif(2==b)c=1;else
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}this,t=0,this,s=0;for(vard=a.length,e=!1,f=0;-d>=0;){v
arg=8==c?255&a「d]:intAt(a,cl);0>g?"-"==a.charAt(d)&&(e=!
0):(e=!1,0==f?this[this.t++]=g:f+c>this.DB?(this[this.t-1]
(g&(1?this.DB-f)-1)?f,this[this.t++]=g>>this.DB-f):thi
s[this.t-1J|=g?f,f+=c,f>=this.DB&&(f-=this.DB));8==c&&0
!=(128&a[0])&&(this.s=-1,f>0&&(this[this.t-1]|=(1?this.DB-
f)-1?f)),this.clampO,e&&Biginteger.ZERO.subTo(this,this)}function
bnpClcimpO(for(vara=this,s&this.DM;this.t>0&&this[this.t1]==
a;)-this.t}functionbnToString(a){if(this.s<0)return+this.negate
().toStrin晨a);varb;if(16==a)b=4;elseif(8==a)b=3;elseif(2=
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b=2}varc,d=(1?b)-1,e=!1,f=g=this,t,h=this.DB-g*
this.DB%b;if(g—>0)for(h<this.DB&&(c=this[g]?h)>0&&(e=!
0,f=int2char(c));g>=0;)b>h?(c=(this[g]&(1<<h)-1)?b-h,
c=this[—g]?(h+=this.DB-b)):(c=this[g]?(h-=b)&d,0>=h&&
(h+=this.DB,-g)),c>0&&(e=!0),e&&(f+=int2char(c));returne?f
:"0"}functionbnNegateO{vara=nbi();returnBiginteger.ZERO.subTo(thi
s,a),a}functionbnAbsO{returnthis,s<0?this,negate():this}functi
onbnCompareTo(a){varb=this,s-a.s;if(0!=b)returnb;varc=this,t;
if(b=c-a.t,0!=b)returnthis,s<0?-b:b;for(;-c>=0;)if(0!
=(b=this[c]-a[c]))returnb;return0}functionnbits(a)(varb,c=1;
return0!=(b=a?>16)&&(a=b,c+=16),0!=(b=a?8)&&(a=b,c
+=8),0!=(b=a?4)&&(a=b,c+=4),0!=(b=a?2)&&(a=b,c+=
2),0!=(b=a?1)&&(a=b,c+=1),c}functionbnBitLength(){returnt
his.t<=0?0:this.DB*(this,t-1)+nbits(this[this.t-1]八this,s&thi
s.DM)}functionbnpDLShiftTo(a,b){varc;for(c=this,t-1;c>=0;-c)
b[c+a]=this[c];for(c=a-1;c>=0;-c)b[c]=0;b.t=this,t+a,b.
s=this,s}functionbnpDRShiftTo(a,b){for(varc=a;c<this.t;++c)b[c
-a]=this[c];b.t=Math,max(this,t-a,0),b.s=this.s}functionbnpLShi
ftTo(a,b){varc,d=a%this.DB,e=this.DB-d,f=(1?e)-1,g=Mat
h.floor(a/this.DB),h=this,s<<d&this.DM;for(c=this,t-1;c>=0;
-c)b[c+g+1]=this[c]?e|h,h=(this[c'&f)?d;for(c=g-1;c
>=0;-c)b[c]=0;b[g]=h,b.t=this,t+g+1,b.s=this,s,b.clampO)
functionbnpRShiftTo(a,b){b.s=this.s;varc=Math.floor(a/this.DB);if
(c>=this,t)returnvoid(b.t=0);vard=a%this.DB,e=this.DB-d,f=
(1<<d)-1;b[0]=this[c]?d;for(varg=c+1;g<this.t;++g)b[g-
c-1]|=(this[g]&f)<<e,b[g-c]=this[g]>>d;d>0&&(b[this.t-c
1]|=(this,s&f)?e),b.t=this,t-c,b.clampO}functionbnpSubTo(a,
b){for(varc=0,d=0,e=Math,min(a.t,this,t);e>c;)d+=thisfc]-
a[c],b[c++]=d&this.DM,d?=this.DB;if(a.t<this,t){for(d-=a.s;c
<this,t;)d+=this[c],b[c++]=d&this.DM,d?=this.DB;d+=this.s}el
se{for(d+=this,s;c<a.t;)d-=a[c],b[c++]=d&this.DM,d?=this.D
B;d-=a.s}b.s=0>d?-1:0,-1>d?b[c++]=this.DV+d:d>0&&(b
[c++]=d),b.t=c,b.clamp())functionbnpMultiplyTo(a,b){varc=this,ab
s(),d=a.abs(),e=c.t;for(b.t=e+d.t;—e>=0;)b[e]=0;for(e=0;
e<d,t;++e)b[e+c.t]=c.am(0,d[e],b,e,0,c.t);b.s=0,b.clamp(),th
is.s!=a.s&&BigInteger.ZERO.subTo(b,b)}functionbnpSquareTo(a){for(var
b=this.absO,c=a,t=2*b.t;-c>=0;)a[c]=0;for(c=0;c<b.t-
1;++c){vard=b.am(c,b[c],a,2*c,0,1);(a[c+b.t]+=b.am(c+1,2*
b[c],a,2*c+1,d.b.t-c-1))>=b.DV&&(a[c+b.t]-=b.DV,a[c'+b.t
+1]=1)}a.t>0&&(a[a.t-1]+=b.am(c,b[c],a,2*c,0,1)),a.s=0,
a.clamp()}functionbnpDivRemTo(a,b,c)[vard=a.abs();if(!(d.t<=0))
{vare=this.abs();if(e.t<d.t)returnnull!=b&&b.fromlnt(0),void(nu
11!=c&&this.copyTo(c));null==c&&(c=nbi());varf=nbi(),g=this,
s,h=a.s,i=this.DB-nbits(d[d.t-1]);i>0?(d.!ShiftTo(i,f),e.IShif
tTo(i,c)):(d.copyTo(f),e.copyTo(c));varj=f.t,k=f[j-1];if(0!=k)
{var1=k*(1?this.Fl)+(j>1?f[j-2：?this.F2:0),m=this.FV
/1,n=(1?this.Fl)/1,o=1?this.F2,p=c.t,q=p-j,r=null==
b?nbi():b;for(f.dlShiftTo(q,r),c.compareTo(r)>=0&&(c[c.t++]=1,c.
subTo(r,c)),Biginteger.ONE.dlShiftTo(j,r),r.subTo(f,f);f.t<j;)f[f.t+
+]=0;for(;一q>=0;){vars=c[―p]==k?this.DM:Math.floor(c[p]*m
+(c[p-1]+o)*n);if((c[p]+=f.am(0,s,c,q,0,j))<s)for(f.dlShif
tTo(q,r),c.subTo(r,c);c[p]<-s;)c.subTo(r,c)}nul1!=b&&(c.drShift
To(j,b),g!=h&&Biginteger.ZERO.subTo(b,b)),c.t=j,c.clampO,i>0&&
c.rShiftTo(i,c),0>g&&Biginteger.ZERO.subTo(c,c)}}}functionbnMod(a)
{varb=nbi0;returnthis,abs().divRemTo(a,null,b),this,s<0&&par
eTo(Biginteger.ZERO)>0&&a.subTo(b,b),b}functionClassic(a){this,n=a
}functioncConvert(a){returna.s<0a.compareTo(this.m)>=0?a.mod(th
is.m):a}functioncRevert(a){returna}functioncReduce(a){a.divReniTo(t
his.m,null,a)}functioncMulTo(a,b,c){a.multipl)rTo(b,c),this,reduce(c)
}functioncSqrTo(a,b){a.sqUcireTo(b),this,reduce(b)}functionbnpInvDigit
(){if(this,t<1)return0;vara=this[01;if(0==(1&a))return0;var
b=3&a;returnb=b*(2-(15&a)*b)&15,b=b*(2-(255&a)*b)
&255,b=b*(2-((65535&a)*b&65535))&65535,b=b*(2-a*b%t
his.DV)%this.DV,b>0?this.DV-b:-b}functionMontgomery(a){this,m=
a,this,mp=a.invDigit(),this,mpl=32767&this,mp,this,mph=this.mp?1
5,this,um=(1?a.DB-15)-1,this.mt2=2*a.t}functionmontConvert(a)
{varb=nbi();returna.abs().dlShiftTo(this.m.t,b),b.divRemTo(this,m,nul
1,b),a.s<0&&b.compareTo(Biginteger.ZERO)>0&&this.m.subTo(b,b),hjf
unctionmontRevert(a){varb=nbi();returna.copyTo(b),this,reduce(b),b}
functionmontRcduce(a)(for(;a.t<=this.mt2;)a[a.t++]=0;for(varb=0;
b<this.m.t;++b){varc=32767&a[b],d=c*this,mpl+((c*this.nph+
(a[b]?15)*this,mpl&this,um)<<15)&a.DM;for(c=b+this.m.t,a[c]
+=this.m.am(0,d,a,b,0,this.m.t);a[c]>=a.DV;)a[c]-=a.DV,a[++c]++}
a.clamp(),a.drShiftTo(this.m.t,a),a.compareTo(this,m)>=0&&a.subTo(this.
m,a)}functionmontSqrTo(a,b){a.squareTo(b),this,reduce(b)}functionmon
tMulTo(a,b,c)(a.multiplyTo(b,c),this.reduce(c)}functionbnpIsEven(){r
eturn0==(this.t>0?1&this[0:this.s)}functionbnpExp(a,b){if(a
>42949672951>a)returnBiginteger.ONE;varc=nbi(),d=nbi(),e=b.
convert(this),f=nbits(a)-1;for(e.copyTo(c);-f>=0;)if(b.sqrTo(c,
d),(a&1?f)>0)b.mulTo(d,e,c);else{varg=c;c=d,d=g}return
b.revert(c))functionbnModPowInt(a,b){varc;returnc=256>aIIb.isEv
en()?newClassic(b):newMontgomery(b),this,exp(a,c)}functionbnCloneO
{vara=nbi0;returnthis.copyTo(a),a)functionbnlntValueO{if(this,s
<0)(if(1==this.t)returnthis[0!-this.DV;if(0==this.t)return-1}
else(if(1==this,t)returnthis[0l;if(0==this,t)return0]return(thi
s[ll&(1?32-this,DB)-1)?this.DBthis[0'}functionbnByteValueO
(return0==this.t?this,s:this[0]<<24?24}functionbnShortValueO
{return0==this.t?this.s:this[0]<<16?16}functionbnpChunkSize(a)
{returnMath,floor(Math.LN2*this.DB/Math,log(a))}functionbnSigNumO{r
eturnthis,s<0?-1:this,t<=01=this.t&&this[0]<=0?0:1}fu
notionbnpToRadix(a)[if(null=a&&(a=10),0==this.signumO2>a|
a>36)return"0";varb=this.chunkSize(a),c=Math.pow(a,b),d=nbv
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"-"=a.charAt(h)&&0=this.signumO&&(e=!0):(g=b*g+i,++f>=
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is.bitLengthO>a&&this.subTo(BigInteger.ONE.shiftLeft(a-1),this);else
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?d[0：&=(1?e)-1:d[01=0,this.fromString(d,256))}functionbnToBy
teArray(){vara=this,t,b=newArray;b[0l=this,s;varc,d=this.DB-
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&c)&&(c|=-256),0==e&&(128&this,s)!=(128&c)&&++e,(e>0Ic
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s.compareTo(a)}functionbnMin(a){returnpareTo(a)<0?this:a}
functionbnMax(a){returnthis.compareTo(a)>0?this:a)functionbnpBitwi
seTo(a,b,c){vard,e,f=Math,min(a.t,this,t);for(d=0;f>d;++d)c
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this.t;++d)c[d]=b(this[d],e);c.t=this.t}else{for(e=this.s&thi
s.DM,d=f;d<a.t;++d)c[d]=b(e,a[d]);c.t=a.t}c.s=b(this.s,a.s),
c.clamp()}functionopand(a,b){returna&b}functionbnAnd(a)(varb=
nbi();returnthis.bilwiseTo(a,op_and>b),b}functionop_or(a,b){return
ab}functionbnOr(a)(varb=nbi();returnthis.bitwiseTo(a,opor,b),b
}functionopxor(a,b){returna*b}functionbnXor(a){varb=nbi();re
turnthis.bitwiseTo(a,opxor,b),b}functionopandnot(a,b){returna&'b
}functionbnAndNot(a){varb=nbi();returnthis.bitwiseTo(a,op_andnot,
b),b}functionbnNotO{for(vara=nbi0,b=0;b<this,t;++b)a[b]=t
his.DM&'this[b];returna.t=this,t,a.s="this,s,a}functionbnShiftLeft
(a){varb=nbi();return0>a?this.rShiftTo(a,b):this.lShiftTo(a,b),
b}functionbnShiftRight(a){varb=nbi();return0>a?this.lShiftTo(-a,
b):this.rShiftTo(a,b),b?functionIbit(a)；if0(==a)return-1;varb
-0;return0==(65535&a)&&(a>>=16,b+=16),0==(255&a)&&(a?=
8,b+=8),0=(15&a)&&(a?=4,b+=4),0=(3&a)&&(a?=2,b+=
2),0==(1&a)&&++b,b}functionbnGetLowestSetBit(){for(vara=0;a<
this.t;++a)if(0!=this[a])returna*this.DB+Ibit(this[a]);returnthi
s.s<0?this.t*this.DB:-1}functioncbit(a){for(varb=0;0!=a;)a
&=a-1,++b;returnb}functionbnBitCount(){for(vara=0,b=this,s&
this.DM,c=0;c<this,t;++c)a+=cbit(lhis[c]'b);returna}functionb
nTestBit(a){varb=Math,floor(a/this.DB);returnb>=this,t?0!=this.s
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glnteger.ONE.shiftLeft(a);returnthis,bitwiseTolc,b,c)>c}functionbnSetBi
t(a){returnthis.changeBit(a,opor)}functionbnClearBit(a){returnthis,c
hangeBiI(a,op_andnot)}functionbnFlipBil(a){returnthis.changeBit(a,op_xo
r)}functionbnpAddTo(a,b){for(varc=0,d=0,e=Math,min(a.t,this,t)
;e>c;)d+=this[c]+a[c],b[c++]=d&this.DM,d?=this.DB;if(a.t<
this,t){for(d+=a.s;c<this,t;)d+=this[c],b[c++]=d&this.DM,d>>=
this.DB;d+=this.s|else{for(d+=this,s;c<a.t;)d+=a[c],b[c++]=
d&this.DM,d?=this.DB;d+=a.s}b.s=0>d?-1:0,d>0?b[c++]=d
:-1>d&&(b[c++]=this.DV+d),b.t=c,b.clamp()}functionbnAdd(a){v
arb=nbi();returnthis.addTo(a,b),b}functionbnSubtract(a){varb=nbi
();returnthis.subTo(a,b),b)functionbnMultiply(a){varb=nbi();return
this.multiplyTo(a,b).b}functionbnSquareO；vara=nbi();returnthis,sq
uareTo(a),a)functionbnDivide(a){varb=nbi();returnthis.divRemTo(a,b,
null),b}functionbnRemainder(a){varb=nbi();returnthis.divRemToCa,nu
11,b),b}functionbnDivideAndRemainder(a){varb=nbi0,c=nbi();return
this.divRemTo(a,b,c),newArray(b,c)}functionbnpDMultiply(a){this'thi
s.t]=this.am(0,a-1,this,0,0,this,t),++this.t,this,clamp()}function
bnpDAddOffset(a,b){if(0!=a){for(;this.t<=b;)this[this.t++]=0;f
or(this[b]+=a;this[b]>=this.DV;)this[b]-=this.DV,++b>=this,t&&(th
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notionrnggetbytes(a){varb;for(b=0;b<a.length;++b)a[b]=rngget
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