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strict';\n\nvar utils = exports;\nvar BN = require('bn.js');\nvar minAssert = require('minimalistic-assert');\nvar minUtils = require('minimalistic-crypto-utils');\nutils.assert = minAssert;\nutils.toArray = minUtils.toArray;\nutils.zero2 = minUtils.zero2;\nutils.toHex = minUtils.toHex;\nutils.encode = minUtils.encode;\n\n// Represent num in a w-NAF form\nfunction getNAF(num, w, bits) {\n var naf = new Array(Math.max(num.bitLength(), bits) + 1);\n var i;\n for (i = 0; i < naf.length; i += 1) {\n naf[i] = 0;\n }\n var ws = 1 << w + 1;\n var k = num.clone();\n for (i = 0; i < naf.length; i++) {\n var z;\n var mod = k.andln(ws - 1);\n if (k.isOdd()) {\n if (mod > (ws >> 1) - 1) z = (ws >> 1) - mod;else z = mod;\n k.isubn(z);\n } else {\n z = 0;\n }\n naf[i] = z;\n k.iushrn(1);\n }\n return naf;\n}\nutils.getNAF = getNAF;\n\n// Represent k1, k2 in a Joint Sparse Form\nfunction getJSF(k1, k2) {\n var jsf = [[], []];\n k1 = k1.clone();\n k2 = k2.clone();\n var d1 = 0;\n var d2 = 0;\n var m8;\n while (k1.cmpn(-d1) > 0 || k2.cmpn(-d2) > 0) {\n // First phase\n var m14 = k1.andln(3) + d1 & 3;\n var m24 = k2.andln(3) + d2 & 3;\n if (m14 === 3) m14 = -1;\n if (m24 === 3) m24 = -1;\n var u1;\n if ((m14 & 1) === 0) {\n u1 = 0;\n } else {\n m8 = k1.andln(7) + d1 & 7;\n if ((m8 === 3 || m8 === 5) && m24 === 2) u1 = -m14;else u1 = m14;\n }\n jsf[0].push(u1);\n var u2;\n if ((m24 & 1) === 0) {\n u2 = 0;\n } else {\n m8 = k2.andln(7) + d2 & 7;\n if ((m8 === 3 || m8 === 5) && m14 === 2) u2 = -m24;else u2 = m24;\n }\n jsf[1].push(u2);\n\n // Second phase\n if (2 * d1 === u1 + 1) d1 = 1 - d1;\n if (2 * d2 === u2 + 1) d2 = 1 - d2;\n k1.iushrn(1);\n k2.iushrn(1);\n }\n return jsf;\n}\nutils.getJSF = getJSF;\nfunction cachedProperty(obj, name, computer) {\n var key = '_' + name;\n obj.prototype[name] = function cachedProperty() {\n return this[key] !== undefined ? this[key] : this[key] = computer.call(this);\n };\n}\nutils.cachedProperty = cachedProperty;\nfunction parseBytes(bytes) {\n return typeof bytes === 'string' ? utils.toArray(bytes, 'hex') : bytes;\n}\nutils.parseBytes = parseBytes;\nfunction intFromLE(bytes) {\n return new BN(bytes, 'hex', 'le');\n}\nutils.intFromLE = intFromLE;","module.exports = {\n doubles: {\n step: 4,\n points: [['e60fce93b59e9ec53011aabc21c23e97b2a31369b87a5ae9c44ee89e2a6dec0a', 'f7e3507399e595929db99f34f57937101296891e44d23f0be1f32cce69616821'], ['8282263212c609d9ea2a6e3e172de238d8c39cabd5ac1ca10646e23fd5f51508', '11f8a8098557dfe45e8256e830b60ace62d613ac2f7b17bed31b6eaff6e26caf'], ['175e159f728b865a72f99cc6c6fc846de0b93833fd2222ed73fce5b551e5b739', 'd3506e0d9e3c79eba4ef97a51ff71f5eacb5955add24345c6efa6ffee9fed695'], ['363d90d447b00c9c99ceac05b6262ee053441c7e55552ffe526bad8f83ff4640', '4e273adfc732221953b445397f3363145b9a89008199ecb62003c7f3bee9de9'], ['8b4b5f165df3c2be8c6244b5b745638843e4a781a15bcd1b69f79a55dffdf80c', '4aad0a6f68d308b4b3fbd7813ab0da04f9e336546162ee56b3eff0c65fd4fd36'], 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['9e2158f0d7c0d5f26c3791efefa79597654e7a2b2464f52b1ee6c1347769ef57', '712fcdd1b9053f09003a3481fa7762e9ffd7c8ef35a38509e2fbf2629008373'], ['176e26989a43c9cfeba4029c202538c28172e566e3c4fce7322857f3be327d66', 'ed8cc9d04b29eb877d270b4878dc43c19aefd31f4eee09ee7b47834c1fa4b1c3'], ['75d46efea3771e6e68abb89a13ad747ecf1892393dfc4f1b7004788c50374da8', '9852390a99507679fd0b86fd2b39a868d7efc22151346e1a3ca4726586a6bed8'], ['809a20c67d64900ffb698c4c825f6d5f2310fb0451c869345b7319f645605721', '9e994980d9917e22b76b061927fa04143d096ccc54963e6a5ebfa5f3f8e286c1'], ['1b38903a43f7f114ed4500b4eac7083fdefece1cf29c63528d563446f972c180', '4036edc931a60ae889353f77fd53de4a2708b26b6f5da72ad3394119daf408f9']]\n }\n};","'use strict';\n\nvar BN = require('bn.js');\nvar HmacDRBG = require('hmac-drbg');\nvar utils = require('../utils');\nvar curves = require('../curves');\nvar rand = require('brorand');\nvar assert = utils.assert;\nvar KeyPair = require('./key');\nvar Signature = require('./signature');\nfunction EC(options) {\n if (!(this instanceof EC)) return new EC(options);\n\n // Shortcut `elliptic.ec(curve-name)`\n if (typeof options === 'string') {\n assert(Object.prototype.hasOwnProperty.call(curves, options), 'Unknown curve ' + options);\n options = curves[options];\n }\n\n // Shortcut for `elliptic.ec(elliptic.curves.curveName)`\n if (options instanceof curves.PresetCurve) options = {\n curve: options\n };\n this.curve = options.curve.curve;\n this.n = this.curve.n;\n this.nh = this.n.ushrn(1);\n this.g = this.curve.g;\n\n // Point on curve\n this.g = options.curve.g;\n this.g.precompute(options.curve.n.bitLength() + 1);\n\n // Hash for function for DRBG\n this.hash = options.hash || options.curve.hash;\n}\nmodule.exports = EC;\nEC.prototype.keyPair = function keyPair(options) {\n return new KeyPair(this, options);\n};\nEC.prototype.keyFromPrivate = function keyFromPrivate(priv, enc) {\n return KeyPair.fromPrivate(this, priv, enc);\n};\nEC.prototype.keyFromPublic = function keyFromPublic(pub, enc) {\n return KeyPair.fromPublic(this, pub, enc);\n};\nEC.prototype.genKeyPair = function genKeyPair(options) {\n if (!options) options = {};\n\n // Instantiate Hmac_DRBG\n var drbg = new HmacDRBG({\n hash: this.hash,\n pers: options.pers,\n persEnc: options.persEnc || 'utf8',\n entropy: options.entropy || rand(this.hash.hmacStrength),\n entropyEnc: options.entropy && options.entropyEnc || 'utf8',\n nonce: this.n.toArray()\n });\n var bytes = this.n.byteLength();\n var ns2 = this.n.sub(new BN(2));\n for (;;) {\n var priv = new BN(drbg.generate(bytes));\n if (priv.cmp(ns2) > 0) continue;\n priv.iaddn(1);\n return this.keyFromPrivate(priv);\n }\n};\nEC.prototype._truncateToN = function _truncateToN(msg, truncOnly) {\n var delta = msg.byteLength() * 8 - this.n.bitLength();\n if (delta > 0) msg = msg.ushrn(delta);\n if (!truncOnly && msg.cmp(this.n) >= 0) return msg.sub(this.n);else return msg;\n};\nEC.prototype.sign = function sign(msg, key, enc, options) {\n if (typeof enc === 'object') {\n options = enc;\n enc = null;\n }\n if (!options) options = {};\n key = this.keyFromPrivate(key, enc);\n msg = this._truncateToN(new BN(msg, 16));\n\n // Zero-extend key to provide enough entropy\n var bytes = this.n.byteLength();\n var bkey = key.getPrivate().toArray('be', bytes);\n\n // Zero-extend nonce to have the same byte size as N\n var nonce = msg.toArray('be', bytes);\n\n // Instantiate Hmac_DRBG\n var drbg = new HmacDRBG({\n hash: this.hash,\n entropy: bkey,\n nonce: nonce,\n pers: options.pers,\n persEnc: options.persEnc || 'utf8'\n });\n\n // Number of bytes to generate\n var ns1 = this.n.sub(new BN(1));\n for (var iter = 0;; iter++) {\n var k = options.k ? options.k(iter) : new BN(drbg.generate(this.n.byteLength()));\n k = this._truncateToN(k, true);\n if (k.cmpn(1) <= 0 || k.cmp(ns1) >= 0) continue;\n var kp = this.g.mul(k);\n if (kp.isInfinity()) continue;\n var kpX = kp.getX();\n var r = kpX.umod(this.n);\n if (r.cmpn(0) === 0) continue;\n var s = k.invm(this.n).mul(r.mul(key.getPrivate()).iadd(msg));\n s = s.umod(this.n);\n if (s.cmpn(0) === 0) continue;\n var recoveryParam = (kp.getY().isOdd() ? 1 : 0) | (kpX.cmp(r) !== 0 ? 2 : 0);\n\n // Use complement of `s`, if it is > `n / 2`\n if (options.canonical && s.cmp(this.nh) > 0) {\n s = this.n.sub(s);\n recoveryParam ^= 1;\n }\n return new Signature({\n r: r,\n s: s,\n recoveryParam: recoveryParam\n });\n }\n};\nEC.prototype.verify = function verify(msg, signature, key, enc) {\n msg = this._truncateToN(new BN(msg, 16));\n key = this.keyFromPublic(key, enc);\n signature = new Signature(signature, 'hex');\n\n // Perform primitive values validation\n var r = signature.r;\n var s = signature.s;\n if (r.cmpn(1) < 0 || r.cmp(this.n) >= 0) return false;\n if (s.cmpn(1) < 0 || s.cmp(this.n) >= 0) return false;\n\n // Validate signature\n var sinv = s.invm(this.n);\n var u1 = sinv.mul(msg).umod(this.n);\n var u2 = sinv.mul(r).umod(this.n);\n var p;\n if (!this.curve._maxwellTrick) {\n p = this.g.mulAdd(u1, key.getPublic(), u2);\n if (p.isInfinity()) return false;\n return p.getX().umod(this.n).cmp(r) === 0;\n }\n\n // NOTE: Greg Maxwell's trick, inspired by:\n // https://git.io/vad3K\n\n p = this.g.jmulAdd(u1, key.getPublic(), u2);\n if (p.isInfinity()) return false;\n\n // Compare `p.x` of Jacobian point with `r`,\n // this will do `p.x == r * p.z^2` instead of multiplying `p.x` by the\n // inverse of `p.z^2`\n return p.eqXToP(r);\n};\nEC.prototype.recoverPubKey = function (msg, signature, j, enc) {\n assert((3 & j) === j, 'The recovery param is more than two bits');\n signature = new Signature(signature, enc);\n var n = this.n;\n var e = new BN(msg);\n var r = signature.r;\n var s = signature.s;\n\n // A set LSB signifies that the y-coordinate is odd\n var isYOdd = j & 1;\n var isSecondKey = j >> 1;\n if (r.cmp(this.curve.p.umod(this.curve.n)) >= 0 && isSecondKey) throw new Error('Unable to find sencond key candinate');\n\n // 1.1. Let x = r + jn.\n if (isSecondKey) r = this.curve.pointFromX(r.add(this.curve.n), isYOdd);else r = this.curve.pointFromX(r, isYOdd);\n var rInv = signature.r.invm(n);\n var s1 = n.sub(e).mul(rInv).umod(n);\n var s2 = s.mul(rInv).umod(n);\n\n // 1.6.1 Compute Q = r^-1 (sR - eG)\n // Q = r^-1 (sR + -eG)\n return this.g.mulAdd(s1, r, s2);\n};\nEC.prototype.getKeyRecoveryParam = function (e, signature, Q, enc) {\n signature = new Signature(signature, enc);\n if (signature.recoveryParam !== null) return signature.recoveryParam;\n for (var i = 0; i < 4; i++) {\n var Qprime;\n try {\n Qprime = this.recoverPubKey(e, signature, i);\n } catch (e) {\n continue;\n }\n if (Qprime.eq(Q)) return i;\n }\n throw new Error('Unable to find valid recovery factor');\n};","'use strict';\n\nvar BN = require('bn.js');\nvar utils = require('../utils');\nvar assert = utils.assert;\nfunction KeyPair(ec, options) {\n this.ec = ec;\n this.priv = null;\n this.pub = null;\n\n // KeyPair(ec, { priv: ..., pub: ... })\n if (options.priv) this._importPrivate(options.priv, options.privEnc);\n if (options.pub) this._importPublic(options.pub, options.pubEnc);\n}\nmodule.exports = KeyPair;\nKeyPair.fromPublic = function fromPublic(ec, pub, enc) {\n if (pub instanceof KeyPair) return pub;\n return new KeyPair(ec, {\n pub: pub,\n pubEnc: enc\n });\n};\nKeyPair.fromPrivate = function fromPrivate(ec, priv, enc) {\n if (priv instanceof KeyPair) return priv;\n return new KeyPair(ec, {\n priv: priv,\n privEnc: enc\n });\n};\nKeyPair.prototype.validate = function validate() {\n var pub = this.getPublic();\n if (pub.isInfinity()) return {\n result: false,\n reason: 'Invalid public key'\n };\n if (!pub.validate()) return {\n result: false,\n reason: 'Public key is not a point'\n };\n if (!pub.mul(this.ec.curve.n).isInfinity()) return {\n result: false,\n reason: 'Public key * N != O'\n };\n return {\n result: true,\n reason: null\n };\n};\nKeyPair.prototype.getPublic = function getPublic(compact, enc) {\n // compact is optional argument\n if (typeof compact === 'string') {\n enc = compact;\n compact = null;\n }\n if (!this.pub) this.pub = this.ec.g.mul(this.priv);\n if (!enc) return this.pub;\n return this.pub.encode(enc, compact);\n};\nKeyPair.prototype.getPrivate = function getPrivate(enc) {\n if (enc === 'hex') return this.priv.toString(16, 2);else return this.priv;\n};\nKeyPair.prototype._importPrivate = function _importPrivate(key, enc) {\n this.priv = new BN(key, enc || 16);\n\n // Ensure that the priv won't be bigger than n, otherwise we may fail\n // in fixed multiplication method\n this.priv = this.priv.umod(this.ec.curve.n);\n};\nKeyPair.prototype._importPublic = function _importPublic(key, enc) {\n if (key.x || key.y) {\n // Montgomery points only have an `x` coordinate.\n // Weierstrass/Edwards points on the other hand have both `x` and\n // `y` coordinates.\n if (this.ec.curve.type === 'mont') {\n assert(key.x, 'Need x coordinate');\n } else if (this.ec.curve.type === 'short' || this.ec.curve.type === 'edwards') {\n assert(key.x && key.y, 'Need both x and y coordinate');\n }\n this.pub = this.ec.curve.point(key.x, key.y);\n return;\n }\n this.pub = this.ec.curve.decodePoint(key, enc);\n};\n\n// ECDH\nKeyPair.prototype.derive = function derive(pub) {\n if (!pub.validate()) {\n assert(pub.validate(), 'public point not validated');\n }\n return pub.mul(this.priv).getX();\n};\n\n// ECDSA\nKeyPair.prototype.sign = function sign(msg, enc, options) {\n return this.ec.sign(msg, this, enc, options);\n};\nKeyPair.prototype.verify = function verify(msg, signature) {\n return this.ec.verify(msg, signature, this);\n};\nKeyPair.prototype.inspect = function inspect() {\n return '<Key priv: ' + (this.priv && this.priv.toString(16, 2)) + ' pub: ' + (this.pub && this.pub.inspect()) + ' >';\n};","'use strict';\n\nvar BN = require('bn.js');\nvar utils = require('../utils');\nvar assert = utils.assert;\nfunction Signature(options, enc) {\n if (options instanceof Signature) return options;\n if (this._importDER(options, enc)) return;\n assert(options.r && options.s, 'Signature without r or s');\n this.r = new BN(options.r, 16);\n this.s = new BN(options.s, 16);\n if (options.recoveryParam === undefined) this.recoveryParam = null;else this.recoveryParam = options.recoveryParam;\n}\nmodule.exports = Signature;\nfunction Position() {\n this.place = 0;\n}\nfunction getLength(buf, p) {\n var initial = buf[p.place++];\n if (!(initial & 0x80)) {\n return initial;\n }\n var octetLen = initial & 0xf;\n\n // Indefinite length or overflow\n if (octetLen === 0 || octetLen > 4) {\n return false;\n }\n var val = 0;\n for (var i = 0, off = p.place; i < octetLen; i++, off++) {\n val <<= 8;\n val |= buf[off];\n val >>>= 0;\n }\n\n // Leading zeroes\n if (val <= 0x7f) {\n return false;\n }\n p.place = off;\n return val;\n}\nfunction rmPadding(buf) {\n var i = 0;\n var len = buf.length - 1;\n while (!buf[i] && !(buf[i + 1] & 0x80) && i < len) {\n i++;\n }\n if (i === 0) {\n return buf;\n }\n return buf.slice(i);\n}\nSignature.prototype._importDER = function _importDER(data, enc) {\n data = utils.toArray(data, enc);\n var p = new Position();\n if (data[p.place++] !== 0x30) {\n return false;\n }\n var len = getLength(data, p);\n if (len === false) {\n return false;\n }\n if (len + p.place !== data.length) {\n return false;\n }\n if (data[p.place++] !== 0x02) {\n return false;\n }\n var rlen = getLength(data, p);\n if (rlen === false) {\n return false;\n }\n var r = data.slice(p.place, rlen + p.place);\n p.place += rlen;\n if (data[p.place++] !== 0x02) {\n return false;\n }\n var slen = getLength(data, p);\n if (slen === false) {\n return false;\n }\n if (data.length !== slen + p.place) {\n return false;\n }\n var s = data.slice(p.place, slen + p.place);\n if (r[0] === 0) {\n if (r[1] & 0x80) {\n r = r.slice(1);\n } else {\n // Leading zeroes\n return false;\n }\n }\n if (s[0] === 0) {\n if (s[1] & 0x80) {\n s = s.slice(1);\n } else {\n // Leading zeroes\n return false;\n }\n }\n this.r = new BN(r);\n this.s = new BN(s);\n this.recoveryParam = null;\n return true;\n};\nfunction constructLength(arr, len) {\n if (len < 0x80) {\n arr.push(len);\n return;\n }\n var octets = 1 + (Math.log(len) / Math.LN2 >>> 3);\n arr.push(octets | 0x80);\n while (--octets) {\n arr.push(len >>> (octets << 3) & 0xff);\n }\n arr.push(len);\n}\nSignature.prototype.toDER = function toDER(enc) {\n var r = this.r.toArray();\n var s = this.s.toArray();\n\n // Pad values\n if (r[0] & 0x80) r = [0].concat(r);\n // Pad values\n if (s[0] & 0x80) s = [0].concat(s);\n r = rmPadding(r);\n s = rmPadding(s);\n while (!s[0] && !(s[1] & 0x80)) {\n s = s.slice(1);\n }\n var arr = [0x02];\n constructLength(arr, r.length);\n arr = arr.concat(r);\n arr.push(0x02);\n constructLength(arr, s.length);\n var backHalf = arr.concat(s);\n var res = [0x30];\n constructLength(res, backHalf.length);\n res = res.concat(backHalf);\n return utils.encode(res, enc);\n};","'use strict';\n\nvar hash = require('hash.js');\nvar curves = require('../curves');\nvar utils = require('../utils');\nvar assert = utils.assert;\nvar parseBytes = utils.parseBytes;\nvar KeyPair = require('./key');\nvar Signature = require('./signature');\nfunction EDDSA(curve) {\n assert(curve === 'ed25519', 'only tested with ed25519 so far');\n if (!(this instanceof EDDSA)) return new EDDSA(curve);\n curve = curves[curve].curve;\n this.curve = curve;\n this.g = curve.g;\n this.g.precompute(curve.n.bitLength() + 1);\n this.pointClass = curve.point().constructor;\n this.encodingLength = Math.ceil(curve.n.bitLength() / 8);\n this.hash = hash.sha512;\n}\nmodule.exports = EDDSA;\n\n/**\n* @param {Array|String} message - message bytes\n* @param {Array|String|KeyPair} secret - secret bytes or a keypair\n* @returns {Signature} - signature\n*/\nEDDSA.prototype.sign = function sign(message, secret) {\n message = parseBytes(message);\n var key = this.keyFromSecret(secret);\n var r = this.hashInt(key.messagePrefix(), message);\n var R = this.g.mul(r);\n var Rencoded = this.encodePoint(R);\n var s_ = this.hashInt(Rencoded, key.pubBytes(), message).mul(key.priv());\n var S = r.add(s_).umod(this.curve.n);\n return this.makeSignature({\n R: R,\n S: S,\n Rencoded: Rencoded\n });\n};\n\n/**\n* @param {Array} message - message bytes\n* @param {Array|String|Signature} sig - sig bytes\n* @param {Array|String|Point|KeyPair} pub - public key\n* @returns {Boolean} - true if public key matches sig of message\n*/\nEDDSA.prototype.verify = function verify(message, sig, pub) {\n message = parseBytes(message);\n sig = this.makeSignature(sig);\n var key = this.keyFromPublic(pub);\n var h = this.hashInt(sig.Rencoded(), key.pubBytes(), message);\n var SG = this.g.mul(sig.S());\n var RplusAh = sig.R().add(key.pub().mul(h));\n return RplusAh.eq(SG);\n};\nEDDSA.prototype.hashInt = function hashInt() {\n var hash = this.hash();\n for (var i = 0; i < arguments.length; i++) hash.update(arguments[i]);\n return utils.intFromLE(hash.digest()).umod(this.curve.n);\n};\nEDDSA.prototype.keyFromPublic = function keyFromPublic(pub) {\n return KeyPair.fromPublic(this, pub);\n};\nEDDSA.prototype.keyFromSecret = function keyFromSecret(secret) {\n return KeyPair.fromSecret(this, secret);\n};\nEDDSA.prototype.makeSignature = function makeSignature(sig) {\n if (sig instanceof Signature) return sig;\n return new Signature(this, sig);\n};\n\n/**\n* * https://tools.ietf.org/html/draft-josefsson-eddsa-ed25519-03#section-5.2\n*\n* EDDSA defines methods for encoding and decoding points and integers. These are\n* helper convenience methods, that pass along to utility functions implied\n* parameters.\n*\n*/\nEDDSA.prototype.encodePoint = function encodePoint(point) {\n var enc = point.getY().toArray('le', this.encodingLength);\n enc[this.encodingLength - 1] |= point.getX().isOdd() ? 0x80 : 0;\n return enc;\n};\nEDDSA.prototype.decodePoint = function decodePoint(bytes) {\n bytes = utils.parseBytes(bytes);\n var lastIx = bytes.length - 1;\n var normed = bytes.slice(0, lastIx).concat(bytes[lastIx] & ~0x80);\n var xIsOdd = (bytes[lastIx] & 0x80) !== 0;\n var y = utils.intFromLE(normed);\n return this.curve.pointFromY(y, xIsOdd);\n};\nEDDSA.prototype.encodeInt = function encodeInt(num) {\n return num.toArray('le', this.encodingLength);\n};\nEDDSA.prototype.decodeInt = function decodeInt(bytes) {\n return utils.intFromLE(bytes);\n};\nEDDSA.prototype.isPoint = function isPoint(val) {\n return val instanceof this.pointClass;\n};","'use strict';\n\nvar utils = require('../utils');\nvar assert = utils.assert;\nvar parseBytes = utils.parseBytes;\nvar cachedProperty = utils.cachedProperty;\n\n/**\n* @param {EDDSA} eddsa - instance\n* @param {Object} params - public/private key parameters\n*\n* @param {Array<Byte>} [params.secret] - secret seed bytes\n* @param {Point} [params.pub] - public key point (aka `A` in eddsa terms)\n* @param {Array<Byte>} [params.pub] - public key point encoded as bytes\n*\n*/\nfunction KeyPair(eddsa, params) {\n this.eddsa = eddsa;\n this._secret = parseBytes(params.secret);\n if (eddsa.isPoint(params.pub)) this._pub = params.pub;else this._pubBytes = parseBytes(params.pub);\n}\nKeyPair.fromPublic = function fromPublic(eddsa, pub) {\n if (pub instanceof KeyPair) return pub;\n return new KeyPair(eddsa, {\n pub: pub\n });\n};\nKeyPair.fromSecret = function fromSecret(eddsa, secret) {\n if (secret instanceof KeyPair) return secret;\n return new KeyPair(eddsa, {\n secret: secret\n });\n};\nKeyPair.prototype.secret = function secret() {\n return this._secret;\n};\ncachedProperty(KeyPair, 'pubBytes', function pubBytes() {\n return this.eddsa.encodePoint(this.pub());\n});\ncachedProperty(KeyPair, 'pub', function pub() {\n if (this._pubBytes) return this.eddsa.decodePoint(this._pubBytes);\n return this.eddsa.g.mul(this.priv());\n});\ncachedProperty(KeyPair, 'privBytes', function privBytes() {\n var eddsa = this.eddsa;\n var hash = this.hash();\n var lastIx = eddsa.encodingLength - 1;\n var a = hash.slice(0, eddsa.encodingLength);\n a[0] &= 248;\n a[lastIx] &= 127;\n a[lastIx] |= 64;\n return a;\n});\ncachedProperty(KeyPair, 'priv', function priv() {\n return this.eddsa.decodeInt(this.privBytes());\n});\ncachedProperty(KeyPair, 'hash', function hash() {\n return this.eddsa.hash().update(this.secret()).digest();\n});\ncachedProperty(KeyPair, 'messagePrefix', function messagePrefix() {\n return this.hash().slice(this.eddsa.encodingLength);\n});\nKeyPair.prototype.sign = function sign(message) {\n assert(this._secret, 'KeyPair can only verify');\n return this.eddsa.sign(message, this);\n};\nKeyPair.prototype.verify = function verify(message, sig) {\n return this.eddsa.verify(message, sig, this);\n};\nKeyPair.prototype.getSecret = function getSecret(enc) {\n assert(this._secret, 'KeyPair is public only');\n return utils.encode(this.secret(), enc);\n};\nKeyPair.prototype.getPublic = function getPublic(enc) {\n return utils.encode(this.pubBytes(), enc);\n};\nmodule.exports = KeyPair;","'use strict';\n\nvar BN = require('bn.js');\nvar utils = require('../utils');\nvar assert = utils.assert;\nvar cachedProperty = utils.cachedProperty;\nvar parseBytes = utils.parseBytes;\n\n/**\n* @param {EDDSA} eddsa - eddsa instance\n* @param {Array<Bytes>|Object} sig -\n* @param {Array<Bytes>|Point} [sig.R] - R point as Point or bytes\n* @param {Array<Bytes>|bn} [sig.S] - S scalar as bn or bytes\n* @param {Array<Bytes>} [sig.Rencoded] - R point encoded\n* @param {Array<Bytes>} [sig.Sencoded] - S scalar encoded\n*/\nfunction Signature(eddsa, sig) {\n this.eddsa = eddsa;\n if (typeof sig !== 'object') sig = parseBytes(sig);\n if (Array.isArray(sig)) {\n sig = {\n R: sig.slice(0, eddsa.encodingLength),\n S: sig.slice(eddsa.encodingLength)\n };\n }\n assert(sig.R && sig.S, 'Signature without R or S');\n if (eddsa.isPoint(sig.R)) this._R = sig.R;\n if (sig.S instanceof BN) this._S = sig.S;\n this._Rencoded = Array.isArray(sig.R) ? sig.R : sig.Rencoded;\n this._Sencoded = Array.isArray(sig.S) ? sig.S : sig.Sencoded;\n}\ncachedProperty(Signature, 'S', function S() {\n return this.eddsa.decodeInt(this.Sencoded());\n});\ncachedProperty(Signature, 'R', function R() {\n return this.eddsa.decodePoint(this.Rencoded());\n});\ncachedProperty(Signature, 'Rencoded', function Rencoded() {\n return this.eddsa.encodePoint(this.R());\n});\ncachedProperty(Signature, 'Sencoded', function Sencoded() {\n return this.eddsa.encodeInt(this.S());\n});\nSignature.prototype.toBytes = function toBytes() {\n return this.Rencoded().concat(this.Sencoded());\n};\nSignature.prototype.toHex = function toHex() {\n return utils.encode(this.toBytes(), 'hex').toUpperCase();\n};\nmodule.exports = Signature;","// Copyright Joyent, Inc. and other Node contributors.\n//\n// Permission is hereby granted, free of charge, to any person obtaining a\n// copy of this software and associated documentation files (the\n// \"Software\"), to deal in the Software without restriction, including\n// without limitation the rights to use, copy, modify, merge, publish,\n// distribute, sublicense, and/or sell copies of the Software, and to permit\n// persons to whom the Software is furnished to do so, subject to the\n// following conditions:\n//\n// The above copyright notice and this permission notice shall be included\n// in all copies or substantial portions of the Software.\n//\n// THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS\n// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF\n// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN\n// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,\n// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR\n// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE\n// USE OR OTHER DEALINGS IN THE SOFTWARE.\n\n'use strict';\n\nvar R = typeof Reflect === 'object' ? Reflect : null;\nvar ReflectApply = R && typeof R.apply === 'function' ? R.apply : function ReflectApply(target, receiver, args) {\n return Function.prototype.apply.call(target, receiver, args);\n};\nvar ReflectOwnKeys;\nif (R && typeof R.ownKeys === 'function') {\n ReflectOwnKeys = R.ownKeys;\n} else if (Object.getOwnPropertySymbols) {\n ReflectOwnKeys = function ReflectOwnKeys(target) {\n return Object.getOwnPropertyNames(target).concat(Object.getOwnPropertySymbols(target));\n };\n} else {\n ReflectOwnKeys = function ReflectOwnKeys(target) {\n return Object.getOwnPropertyNames(target);\n };\n}\nfunction ProcessEmitWarning(warning) {\n if (console && console.warn) console.warn(warning);\n}\nvar NumberIsNaN = Number.isNaN || function NumberIsNaN(value) {\n return value !== value;\n};\nfunction EventEmitter() {\n EventEmitter.init.call(this);\n}\nmodule.exports = EventEmitter;\nmodule.exports.once = once;\n\n// Backwards-compat with node 0.10.x\nEventEmitter.EventEmitter = EventEmitter;\nEventEmitter.prototype._events = undefined;\nEventEmitter.prototype._eventsCount = 0;\nEventEmitter.prototype._maxListeners = undefined;\n\n// By default EventEmitters will print a warning if more than 10 listeners are\n// added to it. This is a useful default which helps finding memory leaks.\nvar defaultMaxListeners = 10;\nfunction checkListener(listener) {\n if (typeof listener !== 'function') {\n throw new TypeError('The \"listener\" argument must be of type Function. Received type ' + typeof listener);\n }\n}\nObject.defineProperty(EventEmitter, 'defaultMaxListeners', {\n enumerable: true,\n get: function () {\n return defaultMaxListeners;\n },\n set: function (arg) {\n if (typeof arg !== 'number' || arg < 0 || NumberIsNaN(arg)) {\n throw new RangeError('The value of \"defaultMaxListeners\" is out of range. It must be a non-negative number. Received ' + arg + '.');\n }\n defaultMaxListeners = arg;\n }\n});\nEventEmitter.init = function () {\n if (this._events === undefined || this._events === Object.getPrototypeOf(this)._events) {\n this._events = Object.create(null);\n this._eventsCount = 0;\n }\n this._maxListeners = this._maxListeners || undefined;\n};\n\n// Obviously not all Emitters should be limited to 10. This function allows\n// that to be increased. Set to zero for unlimited.\nEventEmitter.prototype.setMaxListeners = function setMaxListeners(n) {\n if (typeof n !== 'number' || n < 0 || NumberIsNaN(n)) {\n throw new RangeError('The value of \"n\" is out of range. It must be a non-negative number. Received ' + n + '.');\n }\n this._maxListeners = n;\n return this;\n};\nfunction _getMaxListeners(that) {\n if (that._maxListeners === undefined) return EventEmitter.defaultMaxListeners;\n return that._maxListeners;\n}\nEventEmitter.prototype.getMaxListeners = function getMaxListeners() {\n return _getMaxListeners(this);\n};\nEventEmitter.prototype.emit = function emit(type) {\n var args = [];\n for (var i = 1; i < arguments.length; i++) args.push(arguments[i]);\n var doError = type === 'error';\n var events = this._events;\n if (events !== undefined) doError = doError && events.error === undefined;else if (!doError) return false;\n\n // If there is no 'error' event listener then throw.\n if (doError) {\n var er;\n if (args.length > 0) er = args[0];\n if (er instanceof Error) {\n // Note: The comments on the `throw` lines are intentional, they show\n // up in Node's output if this results in an unhandled exception.\n throw er; // Unhandled 'error' event\n }\n // At least give some kind of context to the user\n var err = new Error('Unhandled error.' + (er ? ' (' + er.message + ')' : ''));\n err.context = er;\n throw err; // Unhandled 'error' event\n }\n var handler = events[type];\n if (handler === undefined) return false;\n if (typeof handler === 'function') {\n ReflectApply(handler, this, args);\n } else {\n var len = handler.length;\n var listeners = arrayClone(handler, len);\n for (var i = 0; i < len; ++i) ReflectApply(listeners[i], this, args);\n }\n return true;\n};\nfunction _addListener(target, type, listener, prepend) {\n var m;\n var events;\n var existing;\n checkListener(listener);\n events = target._events;\n if (events === undefined) {\n events = target._events = Object.create(null);\n target._eventsCount = 0;\n } else {\n // To avoid recursion in the case that type === \"newListener\"! Before\n // adding it to the listeners, first emit \"newListener\".\n if (events.newListener !== undefined) {\n target.emit('newListener', type, listener.listener ? listener.listener : listener);\n\n // Re-assign `events` because a newListener handler could have caused the\n // this._events to be assigned to a new object\n events = target._events;\n }\n existing = events[type];\n }\n if (existing === undefined) {\n // Optimize the case of one listener. Don't need the extra array object.\n existing = events[type] = listener;\n ++target._eventsCount;\n } else {\n if (typeof existing === 'function') {\n // Adding the second element, need to change to array.\n existing = events[type] = prepend ? [listener, existing] : [existing, listener];\n // If we've already got an array, just append.\n } else if (prepend) {\n existing.unshift(listener);\n } else {\n existing.push(listener);\n }\n\n // Check for listener leak\n m = _getMaxListeners(target);\n if (m > 0 && existing.length > m && !existing.warned) {\n existing.warned = true;\n // No error code for this since it is a Warning\n // eslint-disable-next-line no-restricted-syntax\n var w = new Error('Possible EventEmitter memory leak detected. ' + existing.length + ' ' + String(type) + ' listeners ' + 'added. Use emitter.setMaxListeners() to ' + 'increase limit');\n w.name = 'MaxListenersExceededWarning';\n w.emitter = target;\n w.type = type;\n w.count = existing.length;\n ProcessEmitWarning(w);\n }\n }\n return target;\n}\nEventEmitter.prototype.addListener = function addListener(type, listener) {\n return _addListener(this, type, listener, false);\n};\nEventEmitter.prototype.on = EventEmitter.prototype.addListener;\nEventEmitter.prototype.prependListener = function prependListener(type, listener) {\n return _addListener(this, type, listener, true);\n};\nfunction onceWrapper() {\n if (!this.fired) {\n this.target.removeListener(this.type, this.wrapFn);\n this.fired = true;\n if (arguments.length === 0) return this.listener.call(this.target);\n return this.listener.apply(this.target, arguments);\n }\n}\nfunction _onceWrap(target, type, listener) {\n var state = {\n fired: false,\n wrapFn: undefined,\n target: target,\n type: type,\n listener: listener\n };\n var wrapped = onceWrapper.bind(state);\n wrapped.listener = listener;\n state.wrapFn = wrapped;\n return wrapped;\n}\nEventEmitter.prototype.once = function once(type, listener) {\n checkListener(listener);\n this.on(type, _onceWrap(this, type, listener));\n return this;\n};\nEventEmitter.prototype.prependOnceListener = function prependOnceListener(type, listener) {\n checkListener(listener);\n this.prependListener(type, _onceWrap(this, type, listener));\n return this;\n};\n\n// Emits a 'removeListener' event if and only if the listener was removed.\nEventEmitter.prototype.removeListener = function removeListener(type, listener) {\n var list, events, position, i, originalListener;\n checkListener(listener);\n events = this._events;\n if (events === undefined) return this;\n list = events[type];\n if (list === undefined) return this;\n if (list === listener || list.listener === listener) {\n if (--this._eventsCount === 0) this._events = Object.create(null);else {\n delete events[type];\n if (events.removeListener) this.emit('removeListener', type, list.listener || listener);\n }\n } else if (typeof list !== 'function') {\n position = -1;\n for (i = list.length - 1; i >= 0; i--) {\n if (list[i] === listener || list[i].listener === listener) {\n originalListener = list[i].listener;\n position = i;\n break;\n }\n }\n if (position < 0) return this;\n if (position === 0) list.shift();else {\n spliceOne(list, position);\n }\n if (list.length === 1) events[type] = list[0];\n if (events.removeListener !== undefined) this.emit('removeListener', type, originalListener || listener);\n }\n return this;\n};\nEventEmitter.prototype.off = EventEmitter.prototype.removeListener;\nEventEmitter.prototype.removeAllListeners = function removeAllListeners(type) {\n var listeners, events, i;\n events = this._events;\n if (events === undefined) return this;\n\n // not listening for removeListener, no need to emit\n if (events.removeListener === undefined) {\n if (arguments.length === 0) {\n this._events = Object.create(null);\n this._eventsCount = 0;\n } else if (events[type] !== undefined) {\n if (--this._eventsCount === 0) this._events = Object.create(null);else delete events[type];\n }\n return this;\n }\n\n // emit removeListener for all listeners on all events\n if (arguments.length === 0) {\n var keys = Object.keys(events);\n var key;\n for (i = 0; i < keys.length; ++i) {\n key = keys[i];\n if (key === 'removeListener') continue;\n this.removeAllListeners(key);\n }\n this.removeAllListeners('removeListener');\n this._events = Object.create(null);\n this._eventsCount = 0;\n return this;\n }\n listeners = events[type];\n if (typeof listeners === 'function') {\n this.removeListener(type, listeners);\n } else if (listeners !== undefined) {\n // LIFO order\n for (i = listeners.length - 1; i >= 0; i--) {\n this.removeListener(type, listeners[i]);\n }\n }\n return this;\n};\nfunction _listeners(target, type, unwrap) {\n var events = target._events;\n if (events === undefined) return [];\n var evlistener = events[type];\n if (evlistener === undefined) return [];\n if (typeof evlistener === 'function') return unwrap ? [evlistener.listener || evlistener] : [evlistener];\n return unwrap ? unwrapListeners(evlistener) : arrayClone(evlistener, evlistener.length);\n}\nEventEmitter.prototype.listeners = function listeners(type) {\n return _listeners(this, type, true);\n};\nEventEmitter.prototype.rawListeners = function rawListeners(type) {\n return _listeners(this, type, false);\n};\nEventEmitter.listenerCount = function (emitter, type) {\n if (typeof emitter.listenerCount === 'function') {\n return emitter.listenerCount(type);\n } else {\n return listenerCount.call(emitter, type);\n }\n};\nEventEmitter.prototype.listenerCount = listenerCount;\nfunction listenerCount(type) {\n var events = this._events;\n if (events !== undefined) {\n var evlistener = events[type];\n if (typeof evlistener === 'function') {\n return 1;\n } else if (evlistener !== undefined) {\n return evlistener.length;\n }\n }\n return 0;\n}\nEventEmitter.prototype.eventNames = function eventNames() {\n return this._eventsCount > 0 ? ReflectOwnKeys(this._events) : [];\n};\nfunction arrayClone(arr, n) {\n var copy = new Array(n);\n for (var i = 0; i < n; ++i) copy[i] = arr[i];\n return copy;\n}\nfunction spliceOne(list, index) {\n for (; index + 1 < list.length; index++) list[index] = list[index + 1];\n list.pop();\n}\nfunction unwrapListeners(arr) {\n var ret = new Array(arr.length);\n for (var i = 0; i < ret.length; ++i) {\n ret[i] = arr[i].listener || arr[i];\n }\n return ret;\n}\nfunction once(emitter, name) {\n return new Promise(function (resolve, reject) {\n function errorListener(err) {\n emitter.removeListener(name, resolver);\n reject(err);\n }\n function resolver() {\n if (typeof emitter.removeListener === 'function') {\n emitter.removeListener('error', errorListener);\n }\n resolve([].slice.call(arguments));\n }\n ;\n eventTargetAgnosticAddListener(emitter, name, resolver, {\n once: true\n });\n if (name !== 'error') {\n addErrorHandlerIfEventEmitter(emitter, errorListener, {\n once: true\n });\n }\n });\n}\nfunction addErrorHandlerIfEventEmitter(emitter, handler, flags) {\n if (typeof emitter.on === 'function') {\n eventTargetAgnosticAddListener(emitter, 'error', handler, flags);\n }\n}\nfunction eventTargetAgnosticAddListener(emitter, name, listener, flags) {\n if (typeof emitter.on === 'function') {\n if (flags.once) {\n emitter.once(name, listener);\n } else {\n emitter.on(name, listener);\n }\n } else if (typeof emitter.addEventListener === 'function') {\n // EventTarget does not have `error` event semantics like Node\n // EventEmitters, we do not listen for `error` events here.\n emitter.addEventListener(name, function wrapListener(arg) {\n // IE does not have builtin `{ once: true }` support so we\n // have to do it manually.\n if (flags.once) {\n emitter.removeEventListener(name, wrapListener);\n }\n listener(arg);\n });\n } else {\n throw new TypeError('The \"emitter\" argument must be of type EventEmitter. Received type ' + typeof emitter);\n }\n}"],"sourceRoot":""}