<!DOCTYPE HTML>
<html>
<head>
<title>JavaScript Test ECC</title>
</head>
<body>
<h1>JavaScript Test ECC Example</h1>
<script type="text/javascript" src="DBIG.js"></script>
<script type="text/javascript" src="BIG.js"></script>
<script type="text/javascript" src="FP.js"></script>
<script type="text/javascript" src="ROM.js"></script>
<script type="text/javascript" src="UInt64.js"></script>
<script type="text/javascript" src="HASH256.js"></script>
<script type="text/javascript" src="HASH384.js"></script>
<script type="text/javascript" src="HASH512.js"></script>
<script type="text/javascript" src="RAND.js"></script>
<script type="text/javascript" src="AES.js"></script>
<script type="text/javascript" src="GCM.js"></script>
<script type="text/javascript" src="ECP.js"></script>
<script type="text/javascript" src="ECDH.js"></script>

<script>
/* test driver and function exerciser for ECDH/ECIES/ECDSA API Functions */
		var i,j=0,res;
		var result;
		var pp="M0ng00se";

		var EGS=ECDH.EGS;
		var EFS=ECDH.EFS;
		var EAS=16;
		var sha=ECDH.HASH_TYPE;

		var S1=[];
		var W0=[];
		var W1=[];
		var Z0=[];
		var Z1=[];
		var RAW=[];
		var SALT=[];
		var P1=[];
		var P2=[];
		var V=[];
		var M=[];
		var T=new Array(12);  // must specify required length
		var CS=[];
		var DS=[];

		var rng=new RAND();

		rng.clean();
		for (i=0;i<100;i++) RAW[i]=i;

		rng.seed(100,RAW);
//for (j=0;j<100;j++)
//{

		for (i=0;i<8;i++) SALT[i]=(i+1);  // set Salt

		window.document.write("Alice's Passphrase= " + pp + "<br>");

		var PW=ECDH.stringtobytes(pp);
/* private key S0 of size EGS bytes derived from Password and Salt */
		var S0=ECDH.PBKDF2(sha,PW,SALT,1000,EGS);

		window.document.write("Alice's private key= 0x"+ECDH.bytestostring(S0)+ "<br>");
/* Generate Key pair S/W */
		ECDH.KEY_PAIR_GENERATE(null,S0,W0); 

		window.document.write("Alice's public key= 0x"+ECDH.bytestostring(W0)+ "<br>");

		res=ECDH.PUBLIC_KEY_VALIDATE(true,W0);
		if (res!=0)
			alert("ECP Public Key is invalid!");
/* Random private key for other party */
		ECDH.KEY_PAIR_GENERATE(rng,S1,W1);

		window.document.write("Servers private key= 0x"+ECDH.bytestostring(S1)+ "<br>");
		window.document.write("Servers public key= 0x"+ECDH.bytestostring(W1)+ "<br>");

		res=ECDH.PUBLIC_KEY_VALIDATE(true,W1);
		if (res!=0)
			alert("ECP Public Key is invalid!");
			

/* Calculate common key using DH - IEEE 1363 method */

		ECDH.ECPSVDP_DH(S0,W1,Z0);
		ECDH.ECPSVDP_DH(S1,W0,Z1);

		var same=true;
		for (i=0;i<ECDH.EFS;i++)
			if (Z0[i]!=Z1[i]) same=false;

		if (!same)
			alert("*** ECPSVDP-DH Failed");

		var KEY=ECDH.KDF2(sha,Z0,null,ECDH.EAS);

		window.document.write("Alice's DH Key=  0x"+ECDH.bytestostring(KEY)+ "<br>");
		window.document.write("Servers DH Key=  0x"+ECDH.bytestostring(KEY)+ "<br>");

		if (ROM.CURVETYPE!=ROM.MONTGOMERY)
		{
			window.document.write("Testing ECIES"+ "<br>");

			P1[0]=0x0; P1[1]=0x1; P1[2]=0x2; 
			P2[0]=0x0; P2[1]=0x1; P2[2]=0x2; P2[3]=0x3; 

			for (i=0;i<=16;i++) M[i]=i; 

			var C=ECDH.ECIES_ENCRYPT(sha,P1,P2,rng,W1,M,V,T);

			window.document.write("Ciphertext= "+ "<br>");
			window.document.write("V= 0x"+ECDH.bytestostring(V)+ "<br>");
			window.document.write("C= 0x"+ECDH.bytestostring(C)+ "<br>");
			window.document.write("T= 0x"+ECDH.bytestostring(T)+ "<br>");


			M=ECDH.ECIES_DECRYPT(sha,P1,P2,V,C,T,S1);
			if (M.length==0)
				alert("*** ECIES Decryption Failed ");
			else window.document.write("Decryption succeeded"+ "<br>");

			window.document.write("Message is 0x"+ECDH.bytestostring(M)+ "<br>");

			window.document.write("Testing ECDSA"+ "<br>");

			if (ECDH.ECPSP_DSA(sha,rng,S0,M,CS,DS)!=0)
				alert("***ECDSA Signature Failed");
		
			window.document.write("Signature= "+ "<br>");
			window.document.write("C= 0x"+ECDH.bytestostring(CS)+ "<br>");
			window.document.write("D= 0x"+ECDH.bytestostring(DS)+ "<br>");

			if (ECDH.ECPVP_DSA(sha,W0,M,CS,DS)!=0)
				alert("***ECDSA Verification Failed");
			else window.document.write("ECDSA Signature/Verification succeeded "+  "<br>");
		}
//}
//window.document.write("Test Completed Successfully"+ "<br>");
</script>
</body>
</html>