![]() System : Linux absol.cf 5.4.0-198-generic #218-Ubuntu SMP Fri Sep 27 20:18:53 UTC 2024 x86_64 User : www-data ( 33) PHP Version : 7.4.33 Disable Function : pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wifcontinued,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_get_handler,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,pcntl_async_signals,pcntl_unshare, Directory : /usr/local/n/versions/node/14.15.4/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"); } } }