version22/js/AES.js - incubator-milagro-crypto - Git at Google

 /*
 	Licensed to the Apache Software Foundation (ASF) under one
 	or more contributor license agreements.  See the NOTICE file
 	distributed with this work for additional information
 	regarding copyright ownership.  The ASF licenses this file
 	to you under the Apache License, Version 2.0 (the
 	"License"); you may not use this file except in compliance
 	with the License.  You may obtain a copy of the License at

 	http://www.apache.org/licenses/LICENSE-2.0

 	Unless required by applicable law or agreed to in writing,
 	software distributed under the License is distributed on an
 	"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 	KIND, either express or implied.  See the License for the
 	specific language governing permissions and limitations
 	under the License.
 */

 var AES = function() {
 	this.Nk=0;
 	this.Nr=0;
 	this.mode=0;
 	this.fkey=[];
 	this.rkey=[];
 	this.f=[];
 };

 AES.prototype={
 /* reset cipher */
 	reset:function(m,iv)
 	{ /* reset mode, or reset iv */
 		var i;
 		this.mode=m;
 		for (i=0;i<16;i++)
 			this.f[i]=0;
 		if (this.mode!=ROM.ECB && iv!==null)
 			for (i=0;i<16;i++)
 				this.f[i]=iv[i];
 	},

 	getreg:function()
 	{
 		var ir=[];
 		for (var i=0;i<16;i++) ir[i]=this.f[i];
 		return ir;
 	},

 	increment:function()
 	{
 		for (var i=0;i<16;i++)
 		{
 			this.f[i]++;
 			if ((this.f[i]&0xff)!=0) break;
 		}
 	},

 /* Initialise cipher */
 	init: function(m,nk,key,iv)
 	{	/* Key=16 bytes */
 		/* Key Scheduler. Create expanded encryption key */
 		var i,j,k,N,nr;
 		var CipherKey= [];
     	var b=[];
 		nk/=4;

 		if (nk!=4 && nk!=6 && nk!=8) return false;

 		nr=6+nk;

 		this.Nk=nk; this.Nr=nr;


 		this.reset(m,iv);
 		N=4*(nr+1);

 		for (i=j=0;i<nk;i++,j+=4)
 		{
 			for (k=0;k<4;k++) b[k]=key[j+k];
 			CipherKey[i]=AES.pack(b);
 		}
 		for (i=0;i<nk;i++) this.fkey[i]=CipherKey[i];
 		for (j=nk,k=0;j<N;j+=nk,k++)
 		{
 			this.fkey[j]=this.fkey[j-nk]^AES.SubByte(AES.ROTL24(this.fkey[j-1]))^(AES.rco[k])&0xff;
 			for (i=1;i<nk && (i+j)<N;i++)
 				this.fkey[i+j]=this.fkey[i+j-nk]^this.fkey[i+j-1];
 		}

  /* now for the expanded decrypt key in reverse order */

 		for (j=0;j<4;j++) this.rkey[j+N-4]=this.fkey[j];
 		for (i=4;i<N-4;i+=4)
 		{
 			k=N-4-i;
 			for (j=0;j<4;j++) this.rkey[k+j]=AES.InvMixCol(this.fkey[i+j]);
 		}
 		for (j=N-4;j<N;j++) this.rkey[j-N+4]=this.fkey[j];
 	},

 /* Encrypt a single block */
 	ecb_encrypt: function(buff)
 	{
 		var i,j,k;
 		var t;
     	var b=[];
     	var p=[];
     	var q=[];

 		for (i=j=0;i<4;i++,j+=4)
 		{
 			for (k=0;k<4;k++) b[k]=buff[j+k];
 			p[i]=AES.pack(b);
 			p[i]^=this.fkey[i];
 		}

 		k=4;

 /* State alternates between p and q */
 		for (i=1;i<this.Nr;i++)
 		{
 			q[0]=this.fkey[k]^AES.ftable[p[0]&0xff]^
 				AES.ROTL8(AES.ftable[(p[1]>>>8)&0xff])^
 				AES.ROTL16(AES.ftable[(p[2]>>>16)&0xff])^
 				AES.ROTL24(AES.ftable[(p[3]>>>24)&0xff]);
 			q[1]=this.fkey[k+1]^AES.ftable[p[1]&0xff]^
 				AES.ROTL8(AES.ftable[(p[2]>>>8)&0xff])^
 				AES.ROTL16(AES.ftable[(p[3]>>>16)&0xff])^
 				AES.ROTL24(AES.ftable[(p[0]>>>24)&0xff]);
 			q[2]=this.fkey[k+2]^AES.ftable[p[2]&0xff]^
 				AES.ROTL8(AES.ftable[(p[3]>>>8)&0xff])^
 				AES.ROTL16(AES.ftable[(p[0]>>>16)&0xff])^
 				AES.ROTL24(AES.ftable[(p[1]>>>24)&0xff]);
 			q[3]=this.fkey[k+3]^AES.ftable[p[3]&0xff]^
 				AES.ROTL8(AES.ftable[(p[0]>>>8)&0xff])^
 				AES.ROTL16(AES.ftable[(p[1]>>>16)&0xff])^
 				AES.ROTL24(AES.ftable[(p[2]>>>24)&0xff]);

 			k+=4;
 			for (j=0;j<4;j++)
 			{
 				t=p[j]; p[j]=q[j]; q[j]=t;
 			}
 		}

 /* Last Round */

 		q[0]=this.fkey[k]^(AES.fbsub[p[0]&0xff]&0xff)^
 			AES.ROTL8(AES.fbsub[(p[1]>>>8)&0xff]&0xff)^
 			AES.ROTL16(AES.fbsub[(p[2]>>>16)&0xff]&0xff)^
 			AES.ROTL24(AES.fbsub[(p[3]>>>24)&0xff]&0xff);

 		q[1]=this.fkey[k+1]^(AES.fbsub[p[1]&0xff]&0xff)^
 			AES.ROTL8(AES.fbsub[(p[2]>>>8)&0xff]&0xff)^
 			AES.ROTL16(AES.fbsub[(p[3]>>>16)&0xff]&0xff)^
 			AES.ROTL24(AES.fbsub[(p[0]>>>24)&0xff]&0xff);

 		q[2]=this.fkey[k+2]^(AES.fbsub[p[2]&0xff]&0xff)^
 			AES.ROTL8(AES.fbsub[(p[3]>>>8)&0xff]&0xff)^
 			AES.ROTL16(AES.fbsub[(p[0]>>>16)&0xff]&0xff)^
 			AES.ROTL24(AES.fbsub[(p[1]>>>24)&0xff]&0xff);

 		q[3]=this.fkey[k+3]^(AES.fbsub[(p[3])&0xff]&0xff)^
 			AES.ROTL8(AES.fbsub[(p[0]>>>8)&0xff]&0xff)^
 			AES.ROTL16(AES.fbsub[(p[1]>>>16)&0xff]&0xff)^
 			AES.ROTL24(AES.fbsub[(p[2]>>>24)&0xff]&0xff);

 		for (i=j=0;i<4;i++,j+=4)
 		{
 			b=AES.unpack(q[i]);
 			for (k=0;k<4;k++) buff[j+k]=b[k];
 		}
 	},

 /* Decrypt a single block */
 	ecb_decrypt: function(buff)
 	{
 		var i,j,k;
 		var t;
     	var b=[];
     	var p=[];
     	var q=[];

 		for (i=j=0;i<4;i++,j+=4)
 		{
 			for (k=0;k<4;k++) b[k]=buff[j+k];
 			p[i]=AES.pack(b);
 			p[i]^=this.rkey[i];
 		}

 		k=4;

 /* State alternates between p and q */
 		for (i=1;i<this.Nr;i++)
 		{
 			q[0]=this.rkey[k]^AES.rtable[p[0]&0xff]^
 				AES.ROTL8(AES.rtable[(p[3]>>>8)&0xff])^
 				AES.ROTL16(AES.rtable[(p[2]>>>16)&0xff])^
 				AES.ROTL24(AES.rtable[(p[1]>>>24)&0xff]);
 			q[1]=this.rkey[k+1]^AES.rtable[p[1]&0xff]^
 				AES.ROTL8(AES.rtable[(p[0]>>>8)&0xff])^
 				AES.ROTL16(AES.rtable[(p[3]>>>16)&0xff])^
 				AES.ROTL24(AES.rtable[(p[2]>>>24)&0xff]);
 			q[2]=this.rkey[k+2]^AES.rtable[p[2]&0xff]^
 				AES.ROTL8(AES.rtable[(p[1]>>>8)&0xff])^
 				AES.ROTL16(AES.rtable[(p[0]>>>16)&0xff])^
 				AES.ROTL24(AES.rtable[(p[3]>>>24)&0xff]);
 			q[3]=this.rkey[k+3]^AES.rtable[p[3]&0xff]^
 				AES.ROTL8(AES.rtable[(p[2]>>>8)&0xff])^
 				AES.ROTL16(AES.rtable[(p[1]>>>16)&0xff])^
 				AES.ROTL24(AES.rtable[(p[0]>>>24)&0xff]);

 			k+=4;
 			for (j=0;j<4;j++)
 			{
 				t=p[j]; p[j]=q[j]; q[j]=t;
 			}
 		}

 /* Last Round */

 		q[0]=this.rkey[k]^(AES.rbsub[p[0]&0xff]&0xff)^
 			AES.ROTL8(AES.rbsub[(p[3]>>>8)&0xff]&0xff)^
 			AES.ROTL16(AES.rbsub[(p[2]>>>16)&0xff]&0xff)^
 			AES.ROTL24(AES.rbsub[(p[1]>>>24)&0xff]&0xff);
 		q[1]=this.rkey[k+1]^(AES.rbsub[p[1]&0xff]&0xff)^
 			AES.ROTL8(AES.rbsub[(p[0]>>>8)&0xff]&0xff)^
 			AES.ROTL16(AES.rbsub[(p[3]>>>16)&0xff]&0xff)^
 			AES.ROTL24(AES.rbsub[(p[2]>>>24)&0xff]&0xff);
 		q[2]=this.rkey[k+2]^(AES.rbsub[p[2]&0xff]&0xff)^
 			AES.ROTL8(AES.rbsub[(p[1]>>>8)&0xff]&0xff)^
 			AES.ROTL16(AES.rbsub[(p[0]>>>16)&0xff]&0xff)^
 			AES.ROTL24(AES.rbsub[(p[3]>>>24)&0xff]&0xff);
 		q[3]=this.rkey[k+3]^(AES.rbsub[p[3]&0xff]&0xff)^
 			AES.ROTL8(AES.rbsub[(p[2]>>>8)&0xff]&0xff)^
 			AES.ROTL16(AES.rbsub[(p[1]>>>16)&0xff]&0xff)^
 			AES.ROTL24(AES.rbsub[(p[0]>>>24)&0xff]&0xff);

 		for (i=j=0;i<4;i++,j+=4)
 		{
 			b=AES.unpack(q[i]);
 			for (k=0;k<4;k++) buff[j+k]=b[k];
 		}

 	},

 /* Encrypt using selected mode of operation */
 	encrypt: function(buff)
 	{
 		var j,bytes;
 		var st=[];
 		var fell_off;

 // Supported Modes of Operation

 		fell_off=0;

 		switch (this.mode)
 		{
 		case ROM.ECB:
 			this.ecb_encrypt(buff);
 			return 0;
 		case ROM.CBC:
 			for (j=0;j<16;j++) buff[j]^=this.f[j];
 			this.ecb_encrypt(buff);
 			for (j=0;j<16;j++) this.f[j]=buff[j];
 			return 0;

 		case ROM.CFB1:
 		case ROM.CFB2:
 		case ROM.CFB4:
 			bytes=this.mode-ROM.CFB1+1;
 			for (j=0;j<bytes;j++) fell_off=(fell_off<<8)|this.f[j];
 			for (j=0;j<16;j++) st[j]=this.f[j];
 			for (j=bytes;j<16;j++) this.f[j-bytes]=this.f[j];
 			this.ecb_encrypt(st);
 			for (j=0;j<bytes;j++)
 			{
 				buff[j]^=st[j];
 				this.f[16-bytes+j]=buff[j];
 			}
 			return fell_off;

 		case ROM.OFB1:
 		case ROM.OFB2:
 		case ROM.OFB4:
 		case ROM.OFB8:
 		case ROM.OFB16:

 			bytes=this.mode-ROM.OFB1+1;
 			this.ecb_encrypt(this.f);
 			for (j=0;j<bytes;j++) buff[j]^=this.f[j];
 			return 0;

 		case ROM.CTR1:
 		case ROM.CTR2:
 		case ROM.CTR4:
 		case ROM.CTR8:
 		case ROM.CTR16:

 			bytes=this.mode-ROM.CTR1+1;
 			for (j=0;j<16;j++) st[j]=this.f[j];
 			this.ecb_encrypt(st);
 			for (j=0;j<bytes;j++) buff[j]^=st[j];
 			this.increment();

     default:
 			return 0;
 		}
 	},

 /* Decrypt using selected mode of operation */
 	decrypt: function(buff)
 	{
 		var j,bytes;
 		var st=[];
 		var fell_off;

    // Supported modes of operation
 		fell_off=0;
 		switch (this.mode)
 		{
 		case ROM.ECB:
 			this.ecb_decrypt(buff);
 			return 0;
 		case ROM.CBC:
 			for (j=0;j<16;j++)
 			{
 				st[j]=this.f[j];
 				this.f[j]=buff[j];
 			}
 			this.ecb_decrypt(buff);
 			for (j=0;j<16;j++)
 			{
 				buff[j]^=st[j];
 				st[j]=0;
 			}
 			return 0;
 		case ROM.CFB1:
 		case ROM.CFB2:
 		case ROM.CFB4:
 			bytes=this.mode-ROM.CFB1+1;
 			for (j=0;j<bytes;j++) fell_off=(fell_off<<8)|this.f[j];
 			for (j=0;j<16;j++) st[j]=this.f[j];
 			for (j=bytes;j<16;j++) this.f[j-bytes]=this.f[j];
 			this.ecb_encrypt(st);
 			for (j=0;j<bytes;j++)
 			{
 				this.f[16-bytes+j]=buff[j];
 				buff[j]^=st[j];
 			}
 			return fell_off;
 		case ROM.OFB1:
 		case ROM.OFB2:
 		case ROM.OFB4:
 		case ROM.OFB8:
 		case ROM.OFB16:
 			bytes=this.mode-ROM.OFB1+1;
 			this.ecb_encrypt(this.f);
 			for (j=0;j<bytes;j++) buff[j]^=this.f[j];
 			return 0;

  		case ROM.CTR1:
 		case ROM.CTR2:
 		case ROM.CTR4:
 		case ROM.CTR8:
 		case ROM.CTR16:
 			bytes=this.mode-ROM.CTR1+1;
 			for (j=0;j<16;j++) st[j]=this.f[j];
 			this.ecb_encrypt(st);
 			for (j=0;j<bytes;j++) buff[j]^=st[j];
 			this.increment();
 		default:
 			return 0;
 		}
 	},

 /* Clean up and delete left-overs */
 	end: function()
 	{ // clean up
 		var i;
 		for (i=0;i<4*(this.Nr+1);i++)
 			this.fkey[i]=this.rkey[i]=0;
 		for (i=0;i<16;i++)
 			this.f[i]=0;
 	}

 };

 /* static functions */

 AES.ROTL8=function(x)
 {
 	return (((x)<<8)|((x)>>>24));
 };

 AES.ROTL16=function(x)
 {
 	return (((x)<<16)|((x)>>>16));
 };

 AES.ROTL24=function(x)
 {
 	return (((x)<<24)|((x)>>>8));
 };

 AES.pack= function(b)
 { /* pack 4 bytes into a 32-bit Word */
 		return (((b[3])&0xff)<<24)|((b[2]&0xff)<<16)|((b[1]&0xff)<<8)|(b[0]&0xff);
 };

 AES.unpack=function(a)
 { /* unpack bytes from a word */
 	var b=[];
 	b[0]=(a&0xff);
 	b[1]=((a>>>8)&0xff);
 	b[2]=((a>>>16)&0xff);
 	b[3]=((a>>>24)&0xff);
 	return b;
 };

 AES.bmul=function(x,y)
 { /* x.y= AntiLog(Log(x) + Log(y)) */

 	var ix=(x&0xff);
 	var iy=(y&0xff);
 	var lx=(AES.ltab[ix])&0xff;
 	var ly=(AES.ltab[iy])&0xff;
 	if (x!==0 && y!==0) return AES.ptab[(lx+ly)%255];
 	else return 0;
 };

 //  if (x && y)

 AES.SubByte=function(a)
 {
 	var b=AES.unpack(a);
 	b[0]=AES.fbsub[b[0]&0xff];
 	b[1]=AES.fbsub[b[1]&0xff];
 	b[2]=AES.fbsub[b[2]&0xff];
 	b[3]=AES.fbsub[b[3]&0xff];
 	return AES.pack(b);
 };

 AES.product=function(x,y)
 { /* dot product of two 4-byte arrays */
 	var xb=AES.unpack(x);
 	var yb=AES.unpack(y);
 	return (AES.bmul(xb[0],yb[0])^AES.bmul(xb[1],yb[1])^AES.bmul(xb[2],yb[2])^AES.bmul(xb[3],yb[3]))&0xff;
 };

 AES.InvMixCol=function(x)
 { /* matrix Multiplication */
 	var y,m;
 	var b=[];
 	m=AES.pack(AES.InCo);
 	b[3]=AES.product(m,x);
 	m=AES.ROTL24(m);
 	b[2]=AES.product(m,x);
 	m=AES.ROTL24(m);
 	b[1]=AES.product(m,x);
 	m=AES.ROTL24(m);
 	b[0]=AES.product(m,x);
 	y=AES.pack(b);
 	return y;
 };

 AES.InCo=[0xB,0xD,0x9,0xE];  /* Inverse Coefficients */
 AES.rco=[1,2,4,8,16,32,64,128,27,54,108,216,171,77,154,47];

 AES.ptab=[
 	1,3,5,15,17,51,85,255,26,46,114,150,161,248,19,53,
 	95,225,56,72,216,115,149,164,247,2,6,10,30,34,102,170,
 	229,52,92,228,55,89,235,38,106,190,217,112,144,171,230,49,
 	83,245,4,12,20,60,68,204,79,209,104,184,211,110,178,205,
 	76,212,103,169,224,59,77,215,98,166,241,8,24,40,120,136,
 	131,158,185,208,107,189,220,127,129,152,179,206,73,219,118,154,
 	181,196,87,249,16,48,80,240,11,29,39,105,187,214,97,163,
 	254,25,43,125,135,146,173,236,47,113,147,174,233,32,96,160,
 	251,22,58,78,210,109,183,194,93,231,50,86,250,21,63,65,
 	195,94,226,61,71,201,64,192,91,237,44,116,156,191,218,117,
 	159,186,213,100,172,239,42,126,130,157,188,223,122,142,137,128,
 	155,182,193,88,232,35,101,175,234,37,111,177,200,67,197,84,
 	252,31,33,99,165,244,7,9,27,45,119,153,176,203,70,202,
 	69,207,74,222,121,139,134,145,168,227,62,66,198,81,243,14,
 	18,54,90,238,41,123,141,140,143,138,133,148,167,242,13,23,
 	57,75,221,124,132,151,162,253,28,36,108,180,199,82,246,1
 	];
 AES.ltab=[
 	0,255,25,1,50,2,26,198,75,199,27,104,51,238,223,3,
 	100,4,224,14,52,141,129,239,76,113,8,200,248,105,28,193,
 	125,194,29,181,249,185,39,106,77,228,166,114,154,201,9,120,
 	101,47,138,5,33,15,225,36,18,240,130,69,53,147,218,142,
 	150,143,219,189,54,208,206,148,19,92,210,241,64,70,131,56,
 	102,221,253,48,191,6,139,98,179,37,226,152,34,136,145,16,
 	126,110,72,195,163,182,30,66,58,107,40,84,250,133,61,186,
 	43,121,10,21,155,159,94,202,78,212,172,229,243,115,167,87,
 	175,88,168,80,244,234,214,116,79,174,233,213,231,230,173,232,
 	44,215,117,122,235,22,11,245,89,203,95,176,156,169,81,160,
 	127,12,246,111,23,196,73,236,216,67,31,45,164,118,123,183,
 	204,187,62,90,251,96,177,134,59,82,161,108,170,85,41,157,
 	151,178,135,144,97,190,220,252,188,149,207,205,55,63,91,209,
 	83,57,132,60,65,162,109,71,20,42,158,93,86,242,211,171,
 	68,17,146,217,35,32,46,137,180,124,184,38,119,153,227,165,
 	103,74,237,222,197,49,254,24,13,99,140,128,192,247,112,7
 	];
 AES.fbsub=[
 	99,124,119,123,242,107,111,197,48,1,103,43,254,215,171,118,
 	202,130,201,125,250,89,71,240,173,212,162,175,156,164,114,192,
 	183,253,147,38,54,63,247,204,52,165,229,241,113,216,49,21,
 	4,199,35,195,24,150,5,154,7,18,128,226,235,39,178,117,
 	9,131,44,26,27,110,90,160,82,59,214,179,41,227,47,132,
 	83,209,0,237,32,252,177,91,106,203,190,57,74,76,88,207,
 	208,239,170,251,67,77,51,133,69,249,2,127,80,60,159,168,
 	81,163,64,143,146,157,56,245,188,182,218,33,16,255,243,210,
 	205,12,19,236,95,151,68,23,196,167,126,61,100,93,25,115,
 	96,129,79,220,34,42,144,136,70,238,184,20,222,94,11,219,
 	224,50,58,10,73,6,36,92,194,211,172,98,145,149,228,121,
 	231,200,55,109,141,213,78,169,108,86,244,234,101,122,174,8,
 	186,120,37,46,28,166,180,198,232,221,116,31,75,189,139,138,
 	112,62,181,102,72,3,246,14,97,53,87,185,134,193,29,158,
 	225,248,152,17,105,217,142,148,155,30,135,233,206,85,40,223,
 	140,161,137,13,191,230,66,104,65,153,45,15,176,84,187,22
 	];
 AES.rbsub=[
 	82,9,106,213,48,54,165,56,191,64,163,158,129,243,215,251,
 	124,227,57,130,155,47,255,135,52,142,67,68,196,222,233,203,
 	84,123,148,50,166,194,35,61,238,76,149,11,66,250,195,78,
 	8,46,161,102,40,217,36,178,118,91,162,73,109,139,209,37,
 	114,248,246,100,134,104,152,22,212,164,92,204,93,101,182,146,
 	108,112,72,80,253,237,185,218,94,21,70,87,167,141,157,132,
 	144,216,171,0,140,188,211,10,247,228,88,5,184,179,69,6,
 	208,44,30,143,202,63,15,2,193,175,189,3,1,19,138,107,
 	58,145,17,65,79,103,220,234,151,242,207,206,240,180,230,115,
 	150,172,116,34,231,173,53,133,226,249,55,232,28,117,223,110,
 	71,241,26,113,29,41,197,137,111,183,98,14,170,24,190,27,
 	252,86,62,75,198,210,121,32,154,219,192,254,120,205,90,244,
 	31,221,168,51,136,7,199,49,177,18,16,89,39,128,236,95,
 	96,81,127,169,25,181,74,13,45,229,122,159,147,201,156,239,
 	160,224,59,77,174,42,245,176,200,235,187,60,131,83,153,97,
 	23,43,4,126,186,119,214,38,225,105,20,99,85,33,12,125
 	];
 AES.ftable=[
 	0xa56363c6,0x847c7cf8,0x997777ee,0x8d7b7bf6,0xdf2f2ff,0xbd6b6bd6,
 	0xb16f6fde,0x54c5c591,0x50303060,0x3010102,0xa96767ce,0x7d2b2b56,
 	0x19fefee7,0x62d7d7b5,0xe6abab4d,0x9a7676ec,0x45caca8f,0x9d82821f,
 	0x40c9c989,0x877d7dfa,0x15fafaef,0xeb5959b2,0xc947478e,0xbf0f0fb,
 	0xecadad41,0x67d4d4b3,0xfda2a25f,0xeaafaf45,0xbf9c9c23,0xf7a4a453,
 	0x967272e4,0x5bc0c09b,0xc2b7b775,0x1cfdfde1,0xae93933d,0x6a26264c,
 	0x5a36366c,0x413f3f7e,0x2f7f7f5,0x4fcccc83,0x5c343468,0xf4a5a551,
 	0x34e5e5d1,0x8f1f1f9,0x937171e2,0x73d8d8ab,0x53313162,0x3f15152a,
 	0xc040408,0x52c7c795,0x65232346,0x5ec3c39d,0x28181830,0xa1969637,
 	0xf05050a,0xb59a9a2f,0x907070e,0x36121224,0x9b80801b,0x3de2e2df,
 	0x26ebebcd,0x6927274e,0xcdb2b27f,0x9f7575ea,0x1b090912,0x9e83831d,
 	0x742c2c58,0x2e1a1a34,0x2d1b1b36,0xb26e6edc,0xee5a5ab4,0xfba0a05b,
 	0xf65252a4,0x4d3b3b76,0x61d6d6b7,0xceb3b37d,0x7b292952,0x3ee3e3dd,
 	0x712f2f5e,0x97848413,0xf55353a6,0x68d1d1b9,0x0,0x2cededc1,
 	0x60202040,0x1ffcfce3,0xc8b1b179,0xed5b5bb6,0xbe6a6ad4,0x46cbcb8d,
 	0xd9bebe67,0x4b393972,0xde4a4a94,0xd44c4c98,0xe85858b0,0x4acfcf85,
 	0x6bd0d0bb,0x2aefefc5,0xe5aaaa4f,0x16fbfbed,0xc5434386,0xd74d4d9a,
 	0x55333366,0x94858511,0xcf45458a,0x10f9f9e9,0x6020204,0x817f7ffe,
 	0xf05050a0,0x443c3c78,0xba9f9f25,0xe3a8a84b,0xf35151a2,0xfea3a35d,
 	0xc0404080,0x8a8f8f05,0xad92923f,0xbc9d9d21,0x48383870,0x4f5f5f1,
 	0xdfbcbc63,0xc1b6b677,0x75dadaaf,0x63212142,0x30101020,0x1affffe5,
 	0xef3f3fd,0x6dd2d2bf,0x4ccdcd81,0x140c0c18,0x35131326,0x2fececc3,
 	0xe15f5fbe,0xa2979735,0xcc444488,0x3917172e,0x57c4c493,0xf2a7a755,
 	0x827e7efc,0x473d3d7a,0xac6464c8,0xe75d5dba,0x2b191932,0x957373e6,
 	0xa06060c0,0x98818119,0xd14f4f9e,0x7fdcdca3,0x66222244,0x7e2a2a54,
 	0xab90903b,0x8388880b,0xca46468c,0x29eeeec7,0xd3b8b86b,0x3c141428,
 	0x79dedea7,0xe25e5ebc,0x1d0b0b16,0x76dbdbad,0x3be0e0db,0x56323264,
 	0x4e3a3a74,0x1e0a0a14,0xdb494992,0xa06060c,0x6c242448,0xe45c5cb8,
 	0x5dc2c29f,0x6ed3d3bd,0xefacac43,0xa66262c4,0xa8919139,0xa4959531,
 	0x37e4e4d3,0x8b7979f2,0x32e7e7d5,0x43c8c88b,0x5937376e,0xb76d6dda,
 	0x8c8d8d01,0x64d5d5b1,0xd24e4e9c,0xe0a9a949,0xb46c6cd8,0xfa5656ac,
 	0x7f4f4f3,0x25eaeacf,0xaf6565ca,0x8e7a7af4,0xe9aeae47,0x18080810,
 	0xd5baba6f,0x887878f0,0x6f25254a,0x722e2e5c,0x241c1c38,0xf1a6a657,
 	0xc7b4b473,0x51c6c697,0x23e8e8cb,0x7cdddda1,0x9c7474e8,0x211f1f3e,
 	0xdd4b4b96,0xdcbdbd61,0x868b8b0d,0x858a8a0f,0x907070e0,0x423e3e7c,
 	0xc4b5b571,0xaa6666cc,0xd8484890,0x5030306,0x1f6f6f7,0x120e0e1c,
 	0xa36161c2,0x5f35356a,0xf95757ae,0xd0b9b969,0x91868617,0x58c1c199,
 	0x271d1d3a,0xb99e9e27,0x38e1e1d9,0x13f8f8eb,0xb398982b,0x33111122,
 	0xbb6969d2,0x70d9d9a9,0x898e8e07,0xa7949433,0xb69b9b2d,0x221e1e3c,
 	0x92878715,0x20e9e9c9,0x49cece87,0xff5555aa,0x78282850,0x7adfdfa5,
 	0x8f8c8c03,0xf8a1a159,0x80898909,0x170d0d1a,0xdabfbf65,0x31e6e6d7,
 	0xc6424284,0xb86868d0,0xc3414182,0xb0999929,0x772d2d5a,0x110f0f1e,
 	0xcbb0b07b,0xfc5454a8,0xd6bbbb6d,0x3a16162c
 	];
 AES.rtable=[
 	0x50a7f451,0x5365417e,0xc3a4171a,0x965e273a,0xcb6bab3b,0xf1459d1f,
 	0xab58faac,0x9303e34b,0x55fa3020,0xf66d76ad,0x9176cc88,0x254c02f5,
 	0xfcd7e54f,0xd7cb2ac5,0x80443526,0x8fa362b5,0x495ab1de,0x671bba25,
 	0x980eea45,0xe1c0fe5d,0x2752fc3,0x12f04c81,0xa397468d,0xc6f9d36b,
 	0xe75f8f03,0x959c9215,0xeb7a6dbf,0xda595295,0x2d83bed4,0xd3217458,
 	0x2969e049,0x44c8c98e,0x6a89c275,0x78798ef4,0x6b3e5899,0xdd71b927,
 	0xb64fe1be,0x17ad88f0,0x66ac20c9,0xb43ace7d,0x184adf63,0x82311ae5,
 	0x60335197,0x457f5362,0xe07764b1,0x84ae6bbb,0x1ca081fe,0x942b08f9,
 	0x58684870,0x19fd458f,0x876cde94,0xb7f87b52,0x23d373ab,0xe2024b72,
 	0x578f1fe3,0x2aab5566,0x728ebb2,0x3c2b52f,0x9a7bc586,0xa50837d3,
 	0xf2872830,0xb2a5bf23,0xba6a0302,0x5c8216ed,0x2b1ccf8a,0x92b479a7,
 	0xf0f207f3,0xa1e2694e,0xcdf4da65,0xd5be0506,0x1f6234d1,0x8afea6c4,
 	0x9d532e34,0xa055f3a2,0x32e18a05,0x75ebf6a4,0x39ec830b,0xaaef6040,
 	0x69f715e,0x51106ebd,0xf98a213e,0x3d06dd96,0xae053edd,0x46bde64d,
 	0xb58d5491,0x55dc471,0x6fd40604,0xff155060,0x24fb9819,0x97e9bdd6,
 	0xcc434089,0x779ed967,0xbd42e8b0,0x888b8907,0x385b19e7,0xdbeec879,
 	0x470a7ca1,0xe90f427c,0xc91e84f8,0x0,0x83868009,0x48ed2b32,
 	0xac70111e,0x4e725a6c,0xfbff0efd,0x5638850f,0x1ed5ae3d,0x27392d36,
 	0x64d90f0a,0x21a65c68,0xd1545b9b,0x3a2e3624,0xb1670a0c,0xfe75793,
 	0xd296eeb4,0x9e919b1b,0x4fc5c080,0xa220dc61,0x694b775a,0x161a121c,
 	0xaba93e2,0xe52aa0c0,0x43e0223c,0x1d171b12,0xb0d090e,0xadc78bf2,
 	0xb9a8b62d,0xc8a91e14,0x8519f157,0x4c0775af,0xbbdd99ee,0xfd607fa3,
 	0x9f2601f7,0xbcf5725c,0xc53b6644,0x347efb5b,0x7629438b,0xdcc623cb,
 	0x68fcedb6,0x63f1e4b8,0xcadc31d7,0x10856342,0x40229713,0x2011c684,
 	0x7d244a85,0xf83dbbd2,0x1132f9ae,0x6da129c7,0x4b2f9e1d,0xf330b2dc,
 	0xec52860d,0xd0e3c177,0x6c16b32b,0x99b970a9,0xfa489411,0x2264e947,
 	0xc48cfca8,0x1a3ff0a0,0xd82c7d56,0xef903322,0xc74e4987,0xc1d138d9,
 	0xfea2ca8c,0x360bd498,0xcf81f5a6,0x28de7aa5,0x268eb7da,0xa4bfad3f,
 	0xe49d3a2c,0xd927850,0x9bcc5f6a,0x62467e54,0xc2138df6,0xe8b8d890,
 	0x5ef7392e,0xf5afc382,0xbe805d9f,0x7c93d069,0xa92dd56f,0xb31225cf,
 	0x3b99acc8,0xa77d1810,0x6e639ce8,0x7bbb3bdb,0x97826cd,0xf418596e,
 	0x1b79aec,0xa89a4f83,0x656e95e6,0x7ee6ffaa,0x8cfbc21,0xe6e815ef,
 	0xd99be7ba,0xce366f4a,0xd4099fea,0xd67cb029,0xafb2a431,0x31233f2a,
 	0x3094a5c6,0xc066a235,0x37bc4e74,0xa6ca82fc,0xb0d090e0,0x15d8a733,
 	0x4a9804f1,0xf7daec41,0xe50cd7f,0x2ff69117,0x8dd64d76,0x4db0ef43,
 	0x544daacc,0xdf0496e4,0xe3b5d19e,0x1b886a4c,0xb81f2cc1,0x7f516546,
 	0x4ea5e9d,0x5d358c01,0x737487fa,0x2e410bfb,0x5a1d67b3,0x52d2db92,
 	0x335610e9,0x1347d66d,0x8c61d79a,0x7a0ca137,0x8e14f859,0x893c13eb,
 	0xee27a9ce,0x35c961b7,0xede51ce1,0x3cb1477a,0x59dfd29c,0x3f73f255,
 	0x79ce1418,0xbf37c773,0xeacdf753,0x5baafd5f,0x146f3ddf,0x86db4478,
 	0x81f3afca,0x3ec468b9,0x2c342438,0x5f40a3c2,0x72c31d16,0xc25e2bc,
 	0x8b493c28,0x41950dff,0x7101a839,0xdeb30c08,0x9ce4b4d8,0x90c15664,
 	0x6184cb7b,0x70b632d5,0x745c6c48,0x4257b8d0
 	];
	/*
	Licensed to the Apache Software Foundation (ASF) under one
	or more contributor license agreements. See the NOTICE file
	distributed with this work for additional information
	regarding copyright ownership. The ASF licenses this file
	to you under the Apache License, Version 2.0 (the
	"License"); you may not use this file except in compliance
	with the License. You may obtain a copy of the License at

	http://www.apache.org/licenses/LICENSE-2.0

	Unless required by applicable law or agreed to in writing,
	software distributed under the License is distributed on an
	"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
	KIND, either express or implied. See the License for the
	specific language governing permissions and limitations
	under the License.
	*/

	var AES = function() {
	this.Nk=0;
	this.Nr=0;
	this.mode=0;
	this.fkey=[];
	this.rkey=[];
	this.f=[];
	};

	AES.prototype={
	/* reset cipher */
	reset:function(m,iv)
	{ /* reset mode, or reset iv */
	var i;
	this.mode=m;
	for (i=0;i<16;i++)
	this.f[i]=0;
	if (this.mode!=ROM.ECB && iv!==null)
	for (i=0;i<16;i++)
	this.f[i]=iv[i];
	},

	getreg:function()
	{
	var ir=[];
	for (var i=0;i<16;i++) ir[i]=this.f[i];
	return ir;
	},

	increment:function()
	{
	for (var i=0;i<16;i++)
	{
	this.f[i]++;
	if ((this.f[i]&0xff)!=0) break;
	}
	},

	/* Initialise cipher */
	init: function(m,nk,key,iv)
	{ /* Key=16 bytes */
	/* Key Scheduler. Create expanded encryption key */
	var i,j,k,N,nr;
	var CipherKey= [];
	var b=[];
	nk/=4;

	if (nk!=4 && nk!=6 && nk!=8) return false;

	nr=6+nk;

	this.Nk=nk; this.Nr=nr;


	this.reset(m,iv);
	N=4*(nr+1);

	for (i=j=0;i<nk;i++,j+=4)
	{
	for (k=0;k<4;k++) b[k]=key[j+k];
	CipherKey[i]=AES.pack(b);
	}
	for (i=0;i<nk;i++) this.fkey[i]=CipherKey[i];
	for (j=nk,k=0;j<N;j+=nk,k++)
	{
	this.fkey[j]=this.fkey[j-nk]^AES.SubByte(AES.ROTL24(this.fkey[j-1]))^(AES.rco[k])&0xff;
	for (i=1;i<nk && (i+j)<N;i++)
	this.fkey[i+j]=this.fkey[i+j-nk]^this.fkey[i+j-1];
	}

	/* now for the expanded decrypt key in reverse order */

	for (j=0;j<4;j++) this.rkey[j+N-4]=this.fkey[j];
	for (i=4;i<N-4;i+=4)
	{
	k=N-4-i;
	for (j=0;j<4;j++) this.rkey[k+j]=AES.InvMixCol(this.fkey[i+j]);
	}
	for (j=N-4;j<N;j++) this.rkey[j-N+4]=this.fkey[j];
	},

	/* Encrypt a single block */
	ecb_encrypt: function(buff)
	{
	var i,j,k;
	var t;
	var b=[];
	var p=[];
	var q=[];

	for (i=j=0;i<4;i++,j+=4)
	{
	for (k=0;k<4;k++) b[k]=buff[j+k];
	p[i]=AES.pack(b);
	p[i]^=this.fkey[i];
	}

	k=4;

	/* State alternates between p and q */
	for (i=1;i<this.Nr;i++)
	{
	q[0]=this.fkey[k]^AES.ftable[p[0]&0xff]^
	AES.ROTL8(AES.ftable[(p[1]>>>8)&0xff])^
	AES.ROTL16(AES.ftable[(p[2]>>>16)&0xff])^
	AES.ROTL24(AES.ftable[(p[3]>>>24)&0xff]);
	q[1]=this.fkey[k+1]^AES.ftable[p[1]&0xff]^
	AES.ROTL8(AES.ftable[(p[2]>>>8)&0xff])^
	AES.ROTL16(AES.ftable[(p[3]>>>16)&0xff])^
	AES.ROTL24(AES.ftable[(p[0]>>>24)&0xff]);
	q[2]=this.fkey[k+2]^AES.ftable[p[2]&0xff]^
	AES.ROTL8(AES.ftable[(p[3]>>>8)&0xff])^
	AES.ROTL16(AES.ftable[(p[0]>>>16)&0xff])^
	AES.ROTL24(AES.ftable[(p[1]>>>24)&0xff]);
	q[3]=this.fkey[k+3]^AES.ftable[p[3]&0xff]^
	AES.ROTL8(AES.ftable[(p[0]>>>8)&0xff])^
	AES.ROTL16(AES.ftable[(p[1]>>>16)&0xff])^
	AES.ROTL24(AES.ftable[(p[2]>>>24)&0xff]);

	k+=4;
	for (j=0;j<4;j++)
	{
	t=p[j]; p[j]=q[j]; q[j]=t;
	}
	}

	/* Last Round */

	q[0]=this.fkey[k]^(AES.fbsub[p[0]&0xff]&0xff)^
	AES.ROTL8(AES.fbsub[(p[1]>>>8)&0xff]&0xff)^
	AES.ROTL16(AES.fbsub[(p[2]>>>16)&0xff]&0xff)^
	AES.ROTL24(AES.fbsub[(p[3]>>>24)&0xff]&0xff);

	q[1]=this.fkey[k+1]^(AES.fbsub[p[1]&0xff]&0xff)^
	AES.ROTL8(AES.fbsub[(p[2]>>>8)&0xff]&0xff)^
	AES.ROTL16(AES.fbsub[(p[3]>>>16)&0xff]&0xff)^
	AES.ROTL24(AES.fbsub[(p[0]>>>24)&0xff]&0xff);

	q[2]=this.fkey[k+2]^(AES.fbsub[p[2]&0xff]&0xff)^
	AES.ROTL8(AES.fbsub[(p[3]>>>8)&0xff]&0xff)^
	AES.ROTL16(AES.fbsub[(p[0]>>>16)&0xff]&0xff)^
	AES.ROTL24(AES.fbsub[(p[1]>>>24)&0xff]&0xff);

	q[3]=this.fkey[k+3]^(AES.fbsub[(p[3])&0xff]&0xff)^
	AES.ROTL8(AES.fbsub[(p[0]>>>8)&0xff]&0xff)^
	AES.ROTL16(AES.fbsub[(p[1]>>>16)&0xff]&0xff)^
	AES.ROTL24(AES.fbsub[(p[2]>>>24)&0xff]&0xff);

	for (i=j=0;i<4;i++,j+=4)
	{
	b=AES.unpack(q[i]);
	for (k=0;k<4;k++) buff[j+k]=b[k];
	}
	},

	/* Decrypt a single block */
	ecb_decrypt: function(buff)
	{
	var i,j,k;
	var t;
	var b=[];
	var p=[];
	var q=[];

	for (i=j=0;i<4;i++,j+=4)
	{
	for (k=0;k<4;k++) b[k]=buff[j+k];
	p[i]=AES.pack(b);
	p[i]^=this.rkey[i];
	}

	k=4;

	/* State alternates between p and q */
	for (i=1;i<this.Nr;i++)
	{
	q[0]=this.rkey[k]^AES.rtable[p[0]&0xff]^
	AES.ROTL8(AES.rtable[(p[3]>>>8)&0xff])^
	AES.ROTL16(AES.rtable[(p[2]>>>16)&0xff])^
	AES.ROTL24(AES.rtable[(p[1]>>>24)&0xff]);
	q[1]=this.rkey[k+1]^AES.rtable[p[1]&0xff]^
	AES.ROTL8(AES.rtable[(p[0]>>>8)&0xff])^
	AES.ROTL16(AES.rtable[(p[3]>>>16)&0xff])^
	AES.ROTL24(AES.rtable[(p[2]>>>24)&0xff]);
	q[2]=this.rkey[k+2]^AES.rtable[p[2]&0xff]^
	AES.ROTL8(AES.rtable[(p[1]>>>8)&0xff])^
	AES.ROTL16(AES.rtable[(p[0]>>>16)&0xff])^
	AES.ROTL24(AES.rtable[(p[3]>>>24)&0xff]);
	q[3]=this.rkey[k+3]^AES.rtable[p[3]&0xff]^
	AES.ROTL8(AES.rtable[(p[2]>>>8)&0xff])^
	AES.ROTL16(AES.rtable[(p[1]>>>16)&0xff])^
	AES.ROTL24(AES.rtable[(p[0]>>>24)&0xff]);

	k+=4;
	for (j=0;j<4;j++)
	{
	t=p[j]; p[j]=q[j]; q[j]=t;
	}
	}

	/* Last Round */

	q[0]=this.rkey[k]^(AES.rbsub[p[0]&0xff]&0xff)^
	AES.ROTL8(AES.rbsub[(p[3]>>>8)&0xff]&0xff)^
	AES.ROTL16(AES.rbsub[(p[2]>>>16)&0xff]&0xff)^
	AES.ROTL24(AES.rbsub[(p[1]>>>24)&0xff]&0xff);
	q[1]=this.rkey[k+1]^(AES.rbsub[p[1]&0xff]&0xff)^
	AES.ROTL8(AES.rbsub[(p[0]>>>8)&0xff]&0xff)^
	AES.ROTL16(AES.rbsub[(p[3]>>>16)&0xff]&0xff)^
	AES.ROTL24(AES.rbsub[(p[2]>>>24)&0xff]&0xff);
	q[2]=this.rkey[k+2]^(AES.rbsub[p[2]&0xff]&0xff)^
	AES.ROTL8(AES.rbsub[(p[1]>>>8)&0xff]&0xff)^
	AES.ROTL16(AES.rbsub[(p[0]>>>16)&0xff]&0xff)^
	AES.ROTL24(AES.rbsub[(p[3]>>>24)&0xff]&0xff);
	q[3]=this.rkey[k+3]^(AES.rbsub[p[3]&0xff]&0xff)^
	AES.ROTL8(AES.rbsub[(p[2]>>>8)&0xff]&0xff)^
	AES.ROTL16(AES.rbsub[(p[1]>>>16)&0xff]&0xff)^
	AES.ROTL24(AES.rbsub[(p[0]>>>24)&0xff]&0xff);

	for (i=j=0;i<4;i++,j+=4)
	{
	b=AES.unpack(q[i]);
	for (k=0;k<4;k++) buff[j+k]=b[k];
	}

	},

	/* Encrypt using selected mode of operation */
	encrypt: function(buff)
	{
	var j,bytes;
	var st=[];
	var fell_off;

	// Supported Modes of Operation

	fell_off=0;

	switch (this.mode)
	{
	case ROM.ECB:
	this.ecb_encrypt(buff);
	return 0;
	case ROM.CBC:
	for (j=0;j<16;j++) buff[j]^=this.f[j];
	this.ecb_encrypt(buff);
	for (j=0;j<16;j++) this.f[j]=buff[j];
	return 0;

	case ROM.CFB1:
	case ROM.CFB2:
	case ROM.CFB4:
	bytes=this.mode-ROM.CFB1+1;
	for (j=0;j<bytes;j++) fell_off=(fell_off<<8)\|this.f[j];
	for (j=0;j<16;j++) st[j]=this.f[j];
	for (j=bytes;j<16;j++) this.f[j-bytes]=this.f[j];
	this.ecb_encrypt(st);
	for (j=0;j<bytes;j++)
	{
	buff[j]^=st[j];
	this.f[16-bytes+j]=buff[j];
	}
	return fell_off;

	case ROM.OFB1:
	case ROM.OFB2:
	case ROM.OFB4:
	case ROM.OFB8:
	case ROM.OFB16:

	bytes=this.mode-ROM.OFB1+1;
	this.ecb_encrypt(this.f);
	for (j=0;j<bytes;j++) buff[j]^=this.f[j];
	return 0;

	case ROM.CTR1:
	case ROM.CTR2:
	case ROM.CTR4:
	case ROM.CTR8:
	case ROM.CTR16:

	bytes=this.mode-ROM.CTR1+1;
	for (j=0;j<16;j++) st[j]=this.f[j];
	this.ecb_encrypt(st);
	for (j=0;j<bytes;j++) buff[j]^=st[j];
	this.increment();

	default:
	return 0;
	}
	},

	/* Decrypt using selected mode of operation */
	decrypt: function(buff)
	{
	var j,bytes;
	var st=[];
	var fell_off;

	// Supported modes of operation
	fell_off=0;
	switch (this.mode)
	{
	case ROM.ECB:
	this.ecb_decrypt(buff);
	return 0;
	case ROM.CBC:
	for (j=0;j<16;j++)
	{
	st[j]=this.f[j];
	this.f[j]=buff[j];
	}
	this.ecb_decrypt(buff);
	for (j=0;j<16;j++)
	{
	buff[j]^=st[j];
	st[j]=0;
	}
	return 0;
	case ROM.CFB1:
	case ROM.CFB2:
	case ROM.CFB4:
	bytes=this.mode-ROM.CFB1+1;
	for (j=0;j<bytes;j++) fell_off=(fell_off<<8)\|this.f[j];
	for (j=0;j<16;j++) st[j]=this.f[j];
	for (j=bytes;j<16;j++) this.f[j-bytes]=this.f[j];
	this.ecb_encrypt(st);
	for (j=0;j<bytes;j++)
	{
	this.f[16-bytes+j]=buff[j];
	buff[j]^=st[j];
	}
	return fell_off;
	case ROM.OFB1:
	case ROM.OFB2:
	case ROM.OFB4:
	case ROM.OFB8:
	case ROM.OFB16:
	bytes=this.mode-ROM.OFB1+1;
	this.ecb_encrypt(this.f);
	for (j=0;j<bytes;j++) buff[j]^=this.f[j];
	return 0;

	case ROM.CTR1:
	case ROM.CTR2:
	case ROM.CTR4:
	case ROM.CTR8:
	case ROM.CTR16:
	bytes=this.mode-ROM.CTR1+1;
	for (j=0;j<16;j++) st[j]=this.f[j];
	this.ecb_encrypt(st);
	for (j=0;j<bytes;j++) buff[j]^=st[j];
	this.increment();
	default:
	return 0;
	}
	},

	/* Clean up and delete left-overs */
	end: function()
	{ // clean up
	var i;
	for (i=0;i<4*(this.Nr+1);i++)
	this.fkey[i]=this.rkey[i]=0;
	for (i=0;i<16;i++)
	this.f[i]=0;
	}

	};

	/* static functions */

	AES.ROTL8=function(x)
	{
	return (((x)<<8)\|((x)>>>24));
	};

	AES.ROTL16=function(x)
	{
	return (((x)<<16)\|((x)>>>16));
	};

	AES.ROTL24=function(x)
	{
	return (((x)<<24)\|((x)>>>8));
	};

	AES.pack= function(b)
	{ /* pack 4 bytes into a 32-bit Word */
	return (((b[3])&0xff)<<24)\|((b[2]&0xff)<<16)\|((b[1]&0xff)<<8)\|(b[0]&0xff);
	};

	AES.unpack=function(a)
	{ /* unpack bytes from a word */
	var b=[];
	b[0]=(a&0xff);
	b[1]=((a>>>8)&0xff);
	b[2]=((a>>>16)&0xff);
	b[3]=((a>>>24)&0xff);
	return b;
	};

	AES.bmul=function(x,y)
	{ /* x.y= AntiLog(Log(x) + Log(y)) */

	var ix=(x&0xff);
	var iy=(y&0xff);
	var lx=(AES.ltab[ix])&0xff;
	var ly=(AES.ltab[iy])&0xff;
	if (x!==0 && y!==0) return AES.ptab[(lx+ly)%255];
	else return 0;
	};

	// if (x && y)

	AES.SubByte=function(a)
	{
	var b=AES.unpack(a);
	b[0]=AES.fbsub[b[0]&0xff];
	b[1]=AES.fbsub[b[1]&0xff];
	b[2]=AES.fbsub[b[2]&0xff];
	b[3]=AES.fbsub[b[3]&0xff];
	return AES.pack(b);
	};

	AES.product=function(x,y)
	{ /* dot product of two 4-byte arrays */
	var xb=AES.unpack(x);
	var yb=AES.unpack(y);
	return (AES.bmul(xb[0],yb[0])^AES.bmul(xb[1],yb[1])^AES.bmul(xb[2],yb[2])^AES.bmul(xb[3],yb[3]))&0xff;
	};

	AES.InvMixCol=function(x)
	{ /* matrix Multiplication */
	var y,m;
	var b=[];
	m=AES.pack(AES.InCo);
	b[3]=AES.product(m,x);
	m=AES.ROTL24(m);
	b[2]=AES.product(m,x);
	m=AES.ROTL24(m);
	b[1]=AES.product(m,x);
	m=AES.ROTL24(m);
	b[0]=AES.product(m,x);
	y=AES.pack(b);
	return y;
	};

	AES.InCo=[0xB,0xD,0x9,0xE]; /* Inverse Coefficients */
	AES.rco=[1,2,4,8,16,32,64,128,27,54,108,216,171,77,154,47];

	AES.ptab=[
	1,3,5,15,17,51,85,255,26,46,114,150,161,248,19,53,
	95,225,56,72,216,115,149,164,247,2,6,10,30,34,102,170,
	229,52,92,228,55,89,235,38,106,190,217,112,144,171,230,49,
	83,245,4,12,20,60,68,204,79,209,104,184,211,110,178,205,
	76,212,103,169,224,59,77,215,98,166,241,8,24,40,120,136,
	131,158,185,208,107,189,220,127,129,152,179,206,73,219,118,154,
	181,196,87,249,16,48,80,240,11,29,39,105,187,214,97,163,
	254,25,43,125,135,146,173,236,47,113,147,174,233,32,96,160,
	251,22,58,78,210,109,183,194,93,231,50,86,250,21,63,65,
	195,94,226,61,71,201,64,192,91,237,44,116,156,191,218,117,
	159,186,213,100,172,239,42,126,130,157,188,223,122,142,137,128,
	155,182,193,88,232,35,101,175,234,37,111,177,200,67,197,84,
	252,31,33,99,165,244,7,9,27,45,119,153,176,203,70,202,
	69,207,74,222,121,139,134,145,168,227,62,66,198,81,243,14,
	18,54,90,238,41,123,141,140,143,138,133,148,167,242,13,23,
	57,75,221,124,132,151,162,253,28,36,108,180,199,82,246,1
	];
	AES.ltab=[
	0,255,25,1,50,2,26,198,75,199,27,104,51,238,223,3,
	100,4,224,14,52,141,129,239,76,113,8,200,248,105,28,193,
	125,194,29,181,249,185,39,106,77,228,166,114,154,201,9,120,
	101,47,138,5,33,15,225,36,18,240,130,69,53,147,218,142,
	150,143,219,189,54,208,206,148,19,92,210,241,64,70,131,56,
	102,221,253,48,191,6,139,98,179,37,226,152,34,136,145,16,
	126,110,72,195,163,182,30,66,58,107,40,84,250,133,61,186,
	43,121,10,21,155,159,94,202,78,212,172,229,243,115,167,87,
	175,88,168,80,244,234,214,116,79,174,233,213,231,230,173,232,
	44,215,117,122,235,22,11,245,89,203,95,176,156,169,81,160,
	127,12,246,111,23,196,73,236,216,67,31,45,164,118,123,183,
	204,187,62,90,251,96,177,134,59,82,161,108,170,85,41,157,
	151,178,135,144,97,190,220,252,188,149,207,205,55,63,91,209,
	83,57,132,60,65,162,109,71,20,42,158,93,86,242,211,171,
	68,17,146,217,35,32,46,137,180,124,184,38,119,153,227,165,
	103,74,237,222,197,49,254,24,13,99,140,128,192,247,112,7
	];
	AES.fbsub=[
	99,124,119,123,242,107,111,197,48,1,103,43,254,215,171,118,
	202,130,201,125,250,89,71,240,173,212,162,175,156,164,114,192,
	183,253,147,38,54,63,247,204,52,165,229,241,113,216,49,21,
	4,199,35,195,24,150,5,154,7,18,128,226,235,39,178,117,
	9,131,44,26,27,110,90,160,82,59,214,179,41,227,47,132,
	83,209,0,237,32,252,177,91,106,203,190,57,74,76,88,207,
	208,239,170,251,67,77,51,133,69,249,2,127,80,60,159,168,
	81,163,64,143,146,157,56,245,188,182,218,33,16,255,243,210,
	205,12,19,236,95,151,68,23,196,167,126,61,100,93,25,115,
	96,129,79,220,34,42,144,136,70,238,184,20,222,94,11,219,
	224,50,58,10,73,6,36,92,194,211,172,98,145,149,228,121,
	231,200,55,109,141,213,78,169,108,86,244,234,101,122,174,8,
	186,120,37,46,28,166,180,198,232,221,116,31,75,189,139,138,
	112,62,181,102,72,3,246,14,97,53,87,185,134,193,29,158,
	225,248,152,17,105,217,142,148,155,30,135,233,206,85,40,223,
	140,161,137,13,191,230,66,104,65,153,45,15,176,84,187,22
	];
	AES.rbsub=[
	82,9,106,213,48,54,165,56,191,64,163,158,129,243,215,251,
	124,227,57,130,155,47,255,135,52,142,67,68,196,222,233,203,
	84,123,148,50,166,194,35,61,238,76,149,11,66,250,195,78,
	8,46,161,102,40,217,36,178,118,91,162,73,109,139,209,37,
	114,248,246,100,134,104,152,22,212,164,92,204,93,101,182,146,
	108,112,72,80,253,237,185,218,94,21,70,87,167,141,157,132,
	144,216,171,0,140,188,211,10,247,228,88,5,184,179,69,6,
	208,44,30,143,202,63,15,2,193,175,189,3,1,19,138,107,
	58,145,17,65,79,103,220,234,151,242,207,206,240,180,230,115,
	150,172,116,34,231,173,53,133,226,249,55,232,28,117,223,110,
	71,241,26,113,29,41,197,137,111,183,98,14,170,24,190,27,
	252,86,62,75,198,210,121,32,154,219,192,254,120,205,90,244,
	31,221,168,51,136,7,199,49,177,18,16,89,39,128,236,95,
	96,81,127,169,25,181,74,13,45,229,122,159,147,201,156,239,
	160,224,59,77,174,42,245,176,200,235,187,60,131,83,153,97,
	23,43,4,126,186,119,214,38,225,105,20,99,85,33,12,125
	];
	AES.ftable=[
	0xa56363c6,0x847c7cf8,0x997777ee,0x8d7b7bf6,0xdf2f2ff,0xbd6b6bd6,
	0xb16f6fde,0x54c5c591,0x50303060,0x3010102,0xa96767ce,0x7d2b2b56,
	0x19fefee7,0x62d7d7b5,0xe6abab4d,0x9a7676ec,0x45caca8f,0x9d82821f,
	0x40c9c989,0x877d7dfa,0x15fafaef,0xeb5959b2,0xc947478e,0xbf0f0fb,
	0xecadad41,0x67d4d4b3,0xfda2a25f,0xeaafaf45,0xbf9c9c23,0xf7a4a453,
	0x967272e4,0x5bc0c09b,0xc2b7b775,0x1cfdfde1,0xae93933d,0x6a26264c,
	0x5a36366c,0x413f3f7e,0x2f7f7f5,0x4fcccc83,0x5c343468,0xf4a5a551,
	0x34e5e5d1,0x8f1f1f9,0x937171e2,0x73d8d8ab,0x53313162,0x3f15152a,
	0xc040408,0x52c7c795,0x65232346,0x5ec3c39d,0x28181830,0xa1969637,
	0xf05050a,0xb59a9a2f,0x907070e,0x36121224,0x9b80801b,0x3de2e2df,
	0x26ebebcd,0x6927274e,0xcdb2b27f,0x9f7575ea,0x1b090912,0x9e83831d,
	0x742c2c58,0x2e1a1a34,0x2d1b1b36,0xb26e6edc,0xee5a5ab4,0xfba0a05b,
	0xf65252a4,0x4d3b3b76,0x61d6d6b7,0xceb3b37d,0x7b292952,0x3ee3e3dd,
	0x712f2f5e,0x97848413,0xf55353a6,0x68d1d1b9,0x0,0x2cededc1,
	0x60202040,0x1ffcfce3,0xc8b1b179,0xed5b5bb6,0xbe6a6ad4,0x46cbcb8d,
	0xd9bebe67,0x4b393972,0xde4a4a94,0xd44c4c98,0xe85858b0,0x4acfcf85,
	0x6bd0d0bb,0x2aefefc5,0xe5aaaa4f,0x16fbfbed,0xc5434386,0xd74d4d9a,
	0x55333366,0x94858511,0xcf45458a,0x10f9f9e9,0x6020204,0x817f7ffe,
	0xf05050a0,0x443c3c78,0xba9f9f25,0xe3a8a84b,0xf35151a2,0xfea3a35d,
	0xc0404080,0x8a8f8f05,0xad92923f,0xbc9d9d21,0x48383870,0x4f5f5f1,
	0xdfbcbc63,0xc1b6b677,0x75dadaaf,0x63212142,0x30101020,0x1affffe5,
	0xef3f3fd,0x6dd2d2bf,0x4ccdcd81,0x140c0c18,0x35131326,0x2fececc3,
	0xe15f5fbe,0xa2979735,0xcc444488,0x3917172e,0x57c4c493,0xf2a7a755,
	0x827e7efc,0x473d3d7a,0xac6464c8,0xe75d5dba,0x2b191932,0x957373e6,
	0xa06060c0,0x98818119,0xd14f4f9e,0x7fdcdca3,0x66222244,0x7e2a2a54,
	0xab90903b,0x8388880b,0xca46468c,0x29eeeec7,0xd3b8b86b,0x3c141428,
	0x79dedea7,0xe25e5ebc,0x1d0b0b16,0x76dbdbad,0x3be0e0db,0x56323264,
	0x4e3a3a74,0x1e0a0a14,0xdb494992,0xa06060c,0x6c242448,0xe45c5cb8,
	0x5dc2c29f,0x6ed3d3bd,0xefacac43,0xa66262c4,0xa8919139,0xa4959531,
	0x37e4e4d3,0x8b7979f2,0x32e7e7d5,0x43c8c88b,0x5937376e,0xb76d6dda,
	0x8c8d8d01,0x64d5d5b1,0xd24e4e9c,0xe0a9a949,0xb46c6cd8,0xfa5656ac,
	0x7f4f4f3,0x25eaeacf,0xaf6565ca,0x8e7a7af4,0xe9aeae47,0x18080810,
	0xd5baba6f,0x887878f0,0x6f25254a,0x722e2e5c,0x241c1c38,0xf1a6a657,
	0xc7b4b473,0x51c6c697,0x23e8e8cb,0x7cdddda1,0x9c7474e8,0x211f1f3e,
	0xdd4b4b96,0xdcbdbd61,0x868b8b0d,0x858a8a0f,0x907070e0,0x423e3e7c,
	0xc4b5b571,0xaa6666cc,0xd8484890,0x5030306,0x1f6f6f7,0x120e0e1c,
	0xa36161c2,0x5f35356a,0xf95757ae,0xd0b9b969,0x91868617,0x58c1c199,
	0x271d1d3a,0xb99e9e27,0x38e1e1d9,0x13f8f8eb,0xb398982b,0x33111122,
	0xbb6969d2,0x70d9d9a9,0x898e8e07,0xa7949433,0xb69b9b2d,0x221e1e3c,
	0x92878715,0x20e9e9c9,0x49cece87,0xff5555aa,0x78282850,0x7adfdfa5,
	0x8f8c8c03,0xf8a1a159,0x80898909,0x170d0d1a,0xdabfbf65,0x31e6e6d7,
	0xc6424284,0xb86868d0,0xc3414182,0xb0999929,0x772d2d5a,0x110f0f1e,
	0xcbb0b07b,0xfc5454a8,0xd6bbbb6d,0x3a16162c
	];
	AES.rtable=[
	0x50a7f451,0x5365417e,0xc3a4171a,0x965e273a,0xcb6bab3b,0xf1459d1f,
	0xab58faac,0x9303e34b,0x55fa3020,0xf66d76ad,0x9176cc88,0x254c02f5,
	0xfcd7e54f,0xd7cb2ac5,0x80443526,0x8fa362b5,0x495ab1de,0x671bba25,
	0x980eea45,0xe1c0fe5d,0x2752fc3,0x12f04c81,0xa397468d,0xc6f9d36b,
	0xe75f8f03,0x959c9215,0xeb7a6dbf,0xda595295,0x2d83bed4,0xd3217458,
	0x2969e049,0x44c8c98e,0x6a89c275,0x78798ef4,0x6b3e5899,0xdd71b927,
	0xb64fe1be,0x17ad88f0,0x66ac20c9,0xb43ace7d,0x184adf63,0x82311ae5,
	0x60335197,0x457f5362,0xe07764b1,0x84ae6bbb,0x1ca081fe,0x942b08f9,
	0x58684870,0x19fd458f,0x876cde94,0xb7f87b52,0x23d373ab,0xe2024b72,
	0x578f1fe3,0x2aab5566,0x728ebb2,0x3c2b52f,0x9a7bc586,0xa50837d3,
	0xf2872830,0xb2a5bf23,0xba6a0302,0x5c8216ed,0x2b1ccf8a,0x92b479a7,
	0xf0f207f3,0xa1e2694e,0xcdf4da65,0xd5be0506,0x1f6234d1,0x8afea6c4,
	0x9d532e34,0xa055f3a2,0x32e18a05,0x75ebf6a4,0x39ec830b,0xaaef6040,
	0x69f715e,0x51106ebd,0xf98a213e,0x3d06dd96,0xae053edd,0x46bde64d,
	0xb58d5491,0x55dc471,0x6fd40604,0xff155060,0x24fb9819,0x97e9bdd6,
	0xcc434089,0x779ed967,0xbd42e8b0,0x888b8907,0x385b19e7,0xdbeec879,
	0x470a7ca1,0xe90f427c,0xc91e84f8,0x0,0x83868009,0x48ed2b32,
	0xac70111e,0x4e725a6c,0xfbff0efd,0x5638850f,0x1ed5ae3d,0x27392d36,
	0x64d90f0a,0x21a65c68,0xd1545b9b,0x3a2e3624,0xb1670a0c,0xfe75793,
	0xd296eeb4,0x9e919b1b,0x4fc5c080,0xa220dc61,0x694b775a,0x161a121c,
	0xaba93e2,0xe52aa0c0,0x43e0223c,0x1d171b12,0xb0d090e,0xadc78bf2,
	0xb9a8b62d,0xc8a91e14,0x8519f157,0x4c0775af,0xbbdd99ee,0xfd607fa3,
	0x9f2601f7,0xbcf5725c,0xc53b6644,0x347efb5b,0x7629438b,0xdcc623cb,
	0x68fcedb6,0x63f1e4b8,0xcadc31d7,0x10856342,0x40229713,0x2011c684,
	0x7d244a85,0xf83dbbd2,0x1132f9ae,0x6da129c7,0x4b2f9e1d,0xf330b2dc,
	0xec52860d,0xd0e3c177,0x6c16b32b,0x99b970a9,0xfa489411,0x2264e947,
	0xc48cfca8,0x1a3ff0a0,0xd82c7d56,0xef903322,0xc74e4987,0xc1d138d9,
	0xfea2ca8c,0x360bd498,0xcf81f5a6,0x28de7aa5,0x268eb7da,0xa4bfad3f,
	0xe49d3a2c,0xd927850,0x9bcc5f6a,0x62467e54,0xc2138df6,0xe8b8d890,
	0x5ef7392e,0xf5afc382,0xbe805d9f,0x7c93d069,0xa92dd56f,0xb31225cf,
	0x3b99acc8,0xa77d1810,0x6e639ce8,0x7bbb3bdb,0x97826cd,0xf418596e,
	0x1b79aec,0xa89a4f83,0x656e95e6,0x7ee6ffaa,0x8cfbc21,0xe6e815ef,
	0xd99be7ba,0xce366f4a,0xd4099fea,0xd67cb029,0xafb2a431,0x31233f2a,
	0x3094a5c6,0xc066a235,0x37bc4e74,0xa6ca82fc,0xb0d090e0,0x15d8a733,
	0x4a9804f1,0xf7daec41,0xe50cd7f,0x2ff69117,0x8dd64d76,0x4db0ef43,
	0x544daacc,0xdf0496e4,0xe3b5d19e,0x1b886a4c,0xb81f2cc1,0x7f516546,
	0x4ea5e9d,0x5d358c01,0x737487fa,0x2e410bfb,0x5a1d67b3,0x52d2db92,
	0x335610e9,0x1347d66d,0x8c61d79a,0x7a0ca137,0x8e14f859,0x893c13eb,
	0xee27a9ce,0x35c961b7,0xede51ce1,0x3cb1477a,0x59dfd29c,0x3f73f255,
	0x79ce1418,0xbf37c773,0xeacdf753,0x5baafd5f,0x146f3ddf,0x86db4478,
	0x81f3afca,0x3ec468b9,0x2c342438,0x5f40a3c2,0x72c31d16,0xc25e2bc,
	0x8b493c28,0x41950dff,0x7101a839,0xdeb30c08,0x9ce4b4d8,0x90c15664,
	0x6184cb7b,0x70b632d5,0x745c6c48,0x4257b8d0
	];