Linux altar53.supremepanel53.com 4.18.0-553.8.1.lve.el8.x86_64 #1 SMP Thu Jul 4 16:24:39 UTC 2024 x86_64
/ lib/ node_modules/ npm/ node_modules/ ecc-jsbn/ |
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var crypto = require("crypto"); var BigInteger = require("jsbn").BigInteger; var ECPointFp = require("./lib/ec.js").ECPointFp; var Buffer = require("safer-buffer").Buffer; exports.ECCurves = require("./lib/sec.js"); // zero prepad function unstupid(hex,len) { return (hex.length >= len) ? hex : unstupid("0"+hex,len); } exports.ECKey = function(curve, key, isPublic) { var priv; var c = curve(); var n = c.getN(); var bytes = Math.floor(n.bitLength()/8); if(key) { if(isPublic) { var curve = c.getCurve(); // var x = key.slice(1,bytes+1); // skip the 04 for uncompressed format // var y = key.slice(bytes+1); // this.P = new ECPointFp(curve, // curve.fromBigInteger(new BigInteger(x.toString("hex"), 16)), // curve.fromBigInteger(new BigInteger(y.toString("hex"), 16))); this.P = curve.decodePointHex(key.toString("hex")); }else{ if(key.length != bytes) return false; priv = new BigInteger(key.toString("hex"), 16); } }else{ var n1 = n.subtract(BigInteger.ONE); var r = new BigInteger(crypto.randomBytes(n.bitLength())); priv = r.mod(n1).add(BigInteger.ONE); this.P = c.getG().multiply(priv); } if(this.P) { // var pubhex = unstupid(this.P.getX().toBigInteger().toString(16),bytes*2)+unstupid(this.P.getY().toBigInteger().toString(16),bytes*2); // this.PublicKey = Buffer.from("04"+pubhex,"hex"); this.PublicKey = Buffer.from(c.getCurve().encodeCompressedPointHex(this.P),"hex"); } if(priv) { this.PrivateKey = Buffer.from(unstupid(priv.toString(16),bytes*2),"hex"); this.deriveSharedSecret = function(key) { if(!key || !key.P) return false; var S = key.P.multiply(priv); return Buffer.from(unstupid(S.getX().toBigInteger().toString(16),bytes*2),"hex"); } } }