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t=e._readableState;c("emitReadable_",t.destroyed,t.length,t.ended),t.destroyed||!t.length&&!t.ended||(e.emit("readable"),t.emittedReadable=!1),t.needReadable=!t.flowing&&!t.ended&&t.length<=t.highWaterMark,N(e)}function T(e,t){t.readingMore||(t.readingMore=!0,n.nextTick(j,e,t))}function j(e,t){for(;!t.reading&&!t.ended&&(t.length<t.highWaterMark||t.flowing&&0===t.length);){var r=t.length;if(c("maybeReadMore read 0"),e.read(0),r===t.length)break}t.readingMore=!1}function B(e){var t=e._readableState;t.readableListening=e.listenerCount("readable")>0,t.resumeScheduled&&!t.paused?t.flowing=!0:e.listenerCount("data")>0&&e.resume()}function C(e){c("readable nexttick read 0"),e.read(0)}function L(e,t){c("resume",t.reading),t.reading||e.read(0),t.resumeScheduled=!1,e.emit("resume"),N(e),t.flowing&&!t.reading&&e.read(0)}function N(e){var t=e._readableState;for(c("flow",t.flowing);t.flowing&&null!==e.read(););}function q(e,t){return 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t=this.curve.point(this.x,this.y.redNeg());if(e&&this.precomputed){var r=this.precomputed,n=function(e){return e.neg()};t.precomputed={naf:r.naf&&{wnd:r.naf.wnd,points:r.naf.points.map(n)},doubles:r.doubles&&{step:r.doubles.step,points:r.doubles.points.map(n)}}}return t},c.prototype.toJ=function(){return this.inf?this.curve.jpoint(null,null,null):this.curve.jpoint(this.x,this.y,this.curve.one)},a(u,o.BasePoint),s.prototype.jpoint=function(e,t,r){return new u(this,e,t,r)},u.prototype.toP=function(){if(this.isInfinity())return this.curve.point(null,null);var e=this.z.redInvm(),t=e.redSqr(),r=this.x.redMul(t),n=this.y.redMul(t).redMul(e);return this.curve.point(r,n)},u.prototype.neg=function(){return this.curve.jpoint(this.x,this.y.redNeg(),this.z)},u.prototype.add=function(e){if(this.isInfinity())return e;if(e.isInfinity())return this;var t=e.z.redSqr(),r=this.z.redSqr(),n=this.x.redMul(t),i=e.x.redMul(r),a=this.y.redMul(t.redMul(e.z)),o=e.y.redMul(r.redMul(this.z)),f=n.redSub(i),s=a.redSub(o);if(0===f.cmpn(0))return 0!==s.cmpn(0)?this.curve.jpoint(null,null,null):this.dbl();var c=f.redSqr(),u=c.redMul(f),d=n.redMul(c),h=s.redSqr().redIAdd(u).redISub(d).redISub(d),l=s.redMul(d.redISub(h)).redISub(a.redMul(u)),p=this.z.redMul(e.z).redMul(f);return this.curve.jpoint(h,l,p)},u.prototype.mixedAdd=function(e){if(this.isInfinity())return e.toJ();if(e.isInfinity())return this;var t=this.z.redSqr(),r=this.x,n=e.x.redMul(t),i=this.y,a=e.y.redMul(t).redMul(this.z),o=r.redSub(n),f=i.redSub(a);if(0===o.cmpn(0))return 0!==f.cmpn(0)?this.curve.jpoint(null,null,null):this.dbl();var s=o.redSqr(),c=s.redMul(o),u=r.redMul(s),d=f.redSqr().redIAdd(c).redISub(u).redISub(u),h=f.redMul(u.redISub(d)).redISub(i.redMul(c)),l=this.z.redMul(o);return this.curve.jpoint(d,h,l)},u.prototype.dblp=function(e){if(0===e)return this;if(this.isInfinity())return this;if(!e)return this.dbl();var t;if(this.curve.zeroA||this.curve.threeA){var r=this;for(t=0;t<e;t++)r=r.dbl();return r}var n=this.curve.a,i=this.curve.tinv,a=this.x,o=this.y,f=this.z,s=f.redSqr().redSqr(),c=o.redAdd(o);for(t=0;t<e;t++){var u=a.redSqr(),d=c.redSqr(),h=d.redSqr(),l=u.redAdd(u).redIAdd(u).redIAdd(n.redMul(s)),p=a.redMul(d),b=l.redSqr().redISub(p.redAdd(p)),y=p.redISub(b),v=l.redMul(y);v=v.redIAdd(v).redISub(h);var g=c.redMul(f);t+1<e&&(s=s.redMul(h)),a=b,f=g,c=v}return this.curve.jpoint(a,c.redMul(i),f)},u.prototype.dbl=function(){return this.isInfinity()?this:this.curve.zeroA?this._zeroDbl():this.curve.threeA?this._threeDbl():this._dbl()},u.prototype._zeroDbl=function(){var e,t,r;if(this.zOne){var n=this.x.redSqr(),i=this.y.redSqr(),a=i.redSqr(),o=this.x.redAdd(i).redSqr().redISub(n).redISub(a);o=o.redIAdd(o);var f=n.redAdd(n).redIAdd(n),s=f.redSqr().redISub(o).redISub(o),c=a.redIAdd(a);c=(c=c.redIAdd(c)).redIAdd(c),e=s,t=f.redMul(o.redISub(s)).redISub(c),r=this.y.redAdd(this.y)}else{var u=this.x.redSqr(),d=this.y.redSqr(),h=d.redSqr(),l=this.x.redAdd(d).redSqr().redISub(u).redISub(h);l=l.redIAdd(l);var p=u.redAdd(u).redIAdd(u),b=p.redSqr(),y=h.redIAdd(h);y=(y=y.redIAdd(y)).redIAdd(y),e=b.redISub(l).redISub(l),t=p.redMul(l.redISub(e)).redISub(y),r=(r=this.y.redMul(this.z)).redIAdd(r)}return this.curve.jpoint(e,t,r)},u.prototype._threeDbl=function(){var e,t,r;if(this.zOne){var n=this.x.redSqr(),i=this.y.redSqr(),a=i.redSqr(),o=this.x.redAdd(i).redSqr().redISub(n).redISub(a);o=o.redIAdd(o);var f=n.redAdd(n).redIAdd(n).redIAdd(this.curve.a),s=f.redSqr().redISub(o).redISub(o);e=s;var c=a.redIAdd(a);c=(c=c.redIAdd(c)).redIAdd(c),t=f.redMul(o.redISub(s)).redISub(c),r=this.y.redAdd(this.y)}else{var u=this.z.redSqr(),d=this.y.redSqr(),h=this.x.redMul(d),l=this.x.redSub(u).redMul(this.x.redAdd(u));l=l.redAdd(l).redIAdd(l);var p=h.redIAdd(h),b=(p=p.redIAdd(p)).redAdd(p);e=l.redSqr().redISub(b),r=this.y.redAdd(this.z).redSqr().redISub(d).redISub(u);var y=d.redSqr();y=(y=(y=y.redIAdd(y)).redIAdd(y)).redIAdd(y),t=l.redMul(p.redISub(e)).redISub(y)}return this.curve.jpoint(e,t,r)},u.prototype._dbl=function(){var e=this.curve.a,t=this.x,r=this.y,n=this.z,i=n.redSqr().redSqr(),a=t.redSqr(),o=r.redSqr(),f=a.redAdd(a).redIAdd(a).redIAdd(e.redMul(i)),s=t.redAdd(t),c=(s=s.redIAdd(s)).redMul(o),u=f.redSqr().redISub(c.redAdd(c)),d=c.redISub(u),h=o.redSqr();h=(h=(h=h.redIAdd(h)).redIAdd(h)).redIAdd(h);var l=f.redMul(d).redISub(h),p=r.redAdd(r).redMul(n);return this.curve.jpoint(u,l,p)},u.prototype.trpl=function(){if(!this.curve.zeroA)return this.dbl().add(this);var e=this.x.redSqr(),t=this.y.redSqr(),r=this.z.redSqr(),n=t.redSqr(),i=e.redAdd(e).redIAdd(e),a=i.redSqr(),o=this.x.redAdd(t).redSqr().redISub(e).redISub(n),f=(o=(o=(o=o.redIAdd(o)).redAdd(o).redIAdd(o)).redISub(a)).redSqr(),s=n.redIAdd(n);s=(s=(s=s.redIAdd(s)).redIAdd(s)).redIAdd(s);var c=i.redIAdd(o).redSqr().redISub(a).redISub(f).redISub(s),u=t.redMul(c);u=(u=u.redIAdd(u)).redIAdd(u);var d=this.x.redMul(f).redISub(u);d=(d=d.redIAdd(d)).redIAdd(d);var h=this.y.redMul(c.redMul(s.redISub(c)).redISub(o.redMul(f)));h=(h=(h=h.redIAdd(h)).redIAdd(h)).redIAdd(h);var l=this.z.redAdd(o).redSqr().redISub(r).redISub(f);return this.curve.jpoint(d,h,l)},u.prototype.mul=function(e,t){return e=new i(e,t),this.curve._wnafMul(this,e)},u.prototype.eq=function(e){if("affine"===e.type)return this.eq(e.toJ());if(this===e)return!0;var t=this.z.redSqr(),r=e.z.redSqr();if(0!==this.x.redMul(r).redISub(e.x.redMul(t)).cmpn(0))return!1;var n=t.redMul(this.z),i=r.redMul(e.z);return 0===this.y.redMul(i).redISub(e.y.redMul(n)).cmpn(0)},u.prototype.eqXToP=function(e){var t=this.z.redSqr(),r=e.toRed(this.curve.red).redMul(t);if(0===this.x.cmp(r))return!0;for(var n=e.clone(),i=this.curve.redN.redMul(t);;){if(n.iadd(this.curve.n),n.cmp(this.curve.p)>=0)return!1;if(r.redIAdd(i),0===this.x.cmp(r))return!0}},u.prototype.inspect=function(){return this.isInfinity()?"<EC JPoint Infinity>":"<EC JPoint x: "+this.x.toString(16,2)+" y: "+this.y.toString(16,2)+" z: "+this.z.toString(16,2)+">"},u.prototype.isInfinity=function(){return 0===this.z.cmpn(0)}},550:function(e,t,r){"use strict";var n=r(15),i=r(107),a=r(241),o=r(176);function f(e){a.call(this,"mont",e),this.a=new n(e.a,16).toRed(this.red),this.b=new n(e.b,16).toRed(this.red),this.i4=new n(4).toRed(this.red).redInvm(),this.two=new n(2).toRed(this.red),this.a24=this.i4.redMul(this.a.redAdd(this.two))}function s(e,t,r){a.BasePoint.call(this,e,"projective"),null===t&&null===r?(this.x=this.curve.one,this.z=this.curve.zero):(this.x=new n(t,16),this.z=new n(r,16),this.x.red||(this.x=this.x.toRed(this.curve.red)),this.z.red||(this.z=this.z.toRed(this.curve.red)))}i(f,a),e.exports=f,f.prototype.validate=function(e){var t=e.normalize().x,r=t.redSqr(),n=r.redMul(t).redAdd(r.redMul(this.a)).redAdd(t);return 0===n.redSqrt().redSqr().cmp(n)},i(s,a.BasePoint),f.prototype.decodePoint=function(e,t){return this.point(o.toArray(e,t),1)},f.prototype.point=function(e,t){return new s(this,e,t)},f.prototype.pointFromJSON=function(e){return s.fromJSON(this,e)},s.prototype.precompute=function(){},s.prototype._encode=function(){return this.getX().toArray("be",this.curve.p.byteLength())},s.fromJSON=function(e,t){return new s(e,t[0],t[1]||e.one)},s.prototype.inspect=function(){return this.isInfinity()?"<EC Point Infinity>":"<EC Point x: "+this.x.fromRed().toString(16,2)+" z: "+this.z.fromRed().toString(16,2)+">"},s.prototype.isInfinity=function(){return 0===this.z.cmpn(0)},s.prototype.dbl=function(){var e=this.x.redAdd(this.z).redSqr(),t=this.x.redSub(this.z).redSqr(),r=e.redSub(t),n=e.redMul(t),i=r.redMul(t.redAdd(this.curve.a24.redMul(r)));return this.curve.point(n,i)},s.prototype.add=function(){throw new Error("Not supported on Montgomery curve")},s.prototype.diffAdd=function(e,t){var r=this.x.redAdd(this.z),n=this.x.redSub(this.z),i=e.x.redAdd(e.z),a=e.x.redSub(e.z).redMul(r),o=i.redMul(n),f=t.z.redMul(a.redAdd(o).redSqr()),s=t.x.redMul(a.redISub(o).redSqr());return this.curve.point(f,s)},s.prototype.mul=function(e){for(var t=e.clone(),r=this,n=this.curve.point(null,null),i=[];0!==t.cmpn(0);t.iushrn(1))i.push(t.andln(1));for(var a=i.length-1;a>=0;a--)0===i[a]?(r=r.diffAdd(n,this),n=n.dbl()):(n=r.diffAdd(n,this),r=r.dbl());return n},s.prototype.mulAdd=function(){throw new Error("Not supported on Montgomery curve")},s.prototype.jumlAdd=function(){throw new Error("Not supported on Montgomery curve")},s.prototype.eq=function(e){return 0===this.getX().cmp(e.getX())},s.prototype.normalize=function(){return this.x=this.x.redMul(this.z.redInvm()),this.z=this.curve.one,this},s.prototype.getX=function(){return this.normalize(),this.x.fromRed()}},551:function(e,t,r){"use strict";var n=r(176),i=r(15),a=r(107),o=r(241),f=n.assert;function s(e){this.twisted=1!==(0|e.a),this.mOneA=this.twisted&&-1===(0|e.a),this.extended=this.mOneA,o.call(this,"edwards",e),this.a=new i(e.a,16).umod(this.red.m),this.a=this.a.toRed(this.red),this.c=new i(e.c,16).toRed(this.red),this.c2=this.c.redSqr(),this.d=new i(e.d,16).toRed(this.red),this.dd=this.d.redAdd(this.d),f(!this.twisted||0===this.c.fromRed().cmpn(1)),this.oneC=1===(0|e.c)}function c(e,t,r,n,a){o.BasePoint.call(this,e,"projective"),null===t&&null===r&&null===n?(this.x=this.curve.zero,this.y=this.curve.one,this.z=this.curve.one,this.t=this.curve.zero,this.zOne=!0):(this.x=new i(t,16),this.y=new i(r,16),this.z=n?new i(n,16):this.curve.one,this.t=a&&new i(a,16),this.x.red||(this.x=this.x.toRed(this.curve.red)),this.y.red||(this.y=this.y.toRed(this.curve.red)),this.z.red||(this.z=this.z.toRed(this.curve.red)),this.t&&!this.t.red&&(this.t=this.t.toRed(this.curve.red)),this.zOne=this.z===this.curve.one,this.curve.extended&&!this.t&&(this.t=this.x.redMul(this.y),this.zOne||(this.t=this.t.redMul(this.z.redInvm()))))}a(s,o),e.exports=s,s.prototype._mulA=function(e){return this.mOneA?e.redNeg():this.a.redMul(e)},s.prototype._mulC=function(e){return this.oneC?e:this.c.redMul(e)},s.prototype.jpoint=function(e,t,r,n){return this.point(e,t,r,n)},s.prototype.pointFromX=function(e,t){(e=new i(e,16)).red||(e=e.toRed(this.red));var r=e.redSqr(),n=this.c2.redSub(this.a.redMul(r)),a=this.one.redSub(this.c2.redMul(this.d).redMul(r)),o=n.redMul(a.redInvm()),f=o.redSqrt();if(0!==f.redSqr().redSub(o).cmp(this.zero))throw new Error("invalid point");var s=f.fromRed().isOdd();return(t&&!s||!t&&s)&&(f=f.redNeg()),this.point(e,f)},s.prototype.pointFromY=function(e,t){(e=new i(e,16)).red||(e=e.toRed(this.red));var r=e.redSqr(),n=r.redSub(this.c2),a=r.redMul(this.d).redMul(this.c2).redSub(this.a),o=n.redMul(a.redInvm());if(0===o.cmp(this.zero)){if(t)throw new Error("invalid point");return this.point(this.zero,e)}var f=o.redSqrt();if(0!==f.redSqr().redSub(o).cmp(this.zero))throw new Error("invalid point");return f.fromRed().isOdd()!==t&&(f=f.redNeg()),this.point(f,e)},s.prototype.validate=function(e){if(e.isInfinity())return!0;e.normalize();var t=e.x.redSqr(),r=e.y.redSqr(),n=t.redMul(this.a).redAdd(r),i=this.c2.redMul(this.one.redAdd(this.d.redMul(t).redMul(r)));return 0===n.cmp(i)},a(c,o.BasePoint),s.prototype.pointFromJSON=function(e){return c.fromJSON(this,e)},s.prototype.point=function(e,t,r,n){return new c(this,e,t,r,n)},c.fromJSON=function(e,t){return new c(e,t[0],t[1],t[2])},c.prototype.inspect=function(){return this.isInfinity()?"<EC Point Infinity>":"<EC Point x: "+this.x.fromRed().toString(16,2)+" y: "+this.y.fromRed().toString(16,2)+" z: "+this.z.fromRed().toString(16,2)+">"},c.prototype.isInfinity=function(){return 0===this.x.cmpn(0)&&(0===this.y.cmp(this.z)||this.zOne&&0===this.y.cmp(this.curve.c))},c.prototype._extDbl=function(){var e=this.x.redSqr(),t=this.y.redSqr(),r=this.z.redSqr();r=r.redIAdd(r);var n=this.curve._mulA(e),i=this.x.redAdd(this.y).redSqr().redISub(e).redISub(t),a=n.redAdd(t),o=a.redSub(r),f=n.redSub(t),s=i.redMul(o),c=a.redMul(f),u=i.redMul(f),d=o.redMul(a);return this.curve.point(s,c,d,u)},c.prototype._projDbl=function(){var e,t,r,n,i,a,o=this.x.redAdd(this.y).redSqr(),f=this.x.redSqr(),s=this.y.redSqr();if(this.curve.twisted){var c=(n=this.curve._mulA(f)).redAdd(s);this.zOne?(e=o.redSub(f).redSub(s).redMul(c.redSub(this.curve.two)),t=c.redMul(n.redSub(s)),r=c.redSqr().redSub(c).redSub(c)):(i=this.z.redSqr(),a=c.redSub(i).redISub(i),e=o.redSub(f).redISub(s).redMul(a),t=c.redMul(n.redSub(s)),r=c.redMul(a))}else n=f.redAdd(s),i=this.curve._mulC(this.z).redSqr(),a=n.redSub(i).redSub(i),e=this.curve._mulC(o.redISub(n)).redMul(a),t=this.curve._mulC(n).redMul(f.redISub(s)),r=n.redMul(a);return this.curve.point(e,t,r)},c.prototype.dbl=function(){return this.isInfinity()?this:this.curve.extended?this._extDbl():this._projDbl()},c.prototype._extAdd=function(e){var t=this.y.redSub(this.x).redMul(e.y.redSub(e.x)),r=this.y.redAdd(this.x).redMul(e.y.redAdd(e.x)),n=this.t.redMul(this.curve.dd).redMul(e.t),i=this.z.redMul(e.z.redAdd(e.z)),a=r.redSub(t),o=i.redSub(n),f=i.redAdd(n),s=r.redAdd(t),c=a.redMul(o),u=f.redMul(s),d=a.redMul(s),h=o.redMul(f);return this.curve.point(c,u,h,d)},c.prototype._projAdd=function(e){var t,r,n=this.z.redMul(e.z),i=n.redSqr(),a=this.x.redMul(e.x),o=this.y.redMul(e.y),f=this.curve.d.redMul(a).redMul(o),s=i.redSub(f),c=i.redAdd(f),u=this.x.redAdd(this.y).redMul(e.x.redAdd(e.y)).redISub(a).redISub(o),d=n.redMul(s).redMul(u);return this.curve.twisted?(t=n.redMul(c).redMul(o.redSub(this.curve._mulA(a))),r=s.redMul(c)):(t=n.redMul(c).redMul(o.redSub(a)),r=this.curve._mulC(s).redMul(c)),this.curve.point(d,t,r)},c.prototype.add=function(e){return this.isInfinity()?e:e.isInfinity()?this:this.curve.extended?this._extAdd(e):this._projAdd(e)},c.prototype.mul=function(e){return this._hasDoubles(e)?this.curve._fixedNafMul(this,e):this.curve._wnafMul(this,e)},c.prototype.mulAdd=function(e,t,r){return this.curve._wnafMulAdd(1,[this,t],[e,r],2,!1)},c.prototype.jmulAdd=function(e,t,r){return this.curve._wnafMulAdd(1,[this,t],[e,r],2,!0)},c.prototype.normalize=function(){if(this.zOne)return this;var e=this.z.redInvm();return this.x=this.x.redMul(e),this.y=this.y.redMul(e),this.t&&(this.t=this.t.redMul(e)),this.z=this.curve.one,this.zOne=!0,this},c.prototype.neg=function(){return this.curve.point(this.x.redNeg(),this.y,this.z,this.t&&this.t.redNeg())},c.prototype.getX=function(){return this.normalize(),this.x.fromRed()},c.prototype.getY=function(){return this.normalize(),this.y.fromRed()},c.prototype.eq=function(e){return this===e||0===this.getX().cmp(e.getX())&&0===this.getY().cmp(e.getY())},c.prototype.eqXToP=function(e){var t=e.toRed(this.curve.red).redMul(this.z);if(0===this.x.cmp(t))return!0;for(var 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strict";var n=r(15),i=r(554),a=r(176),o=r(280),f=r(279),s=a.assert,c=r(555),u=r(556);function d(e){if(!(this instanceof d))return new d(e);"string"===typeof e&&(s(Object.prototype.hasOwnProperty.call(o,e),"Unknown curve "+e),e=o[e]),e instanceof o.PresetCurve&&(e={curve:e}),this.curve=e.curve.curve,this.n=this.curve.n,this.nh=this.n.ushrn(1),this.g=this.curve.g,this.g=e.curve.g,this.g.precompute(e.curve.n.bitLength()+1),this.hash=e.hash||e.curve.hash}e.exports=d,d.prototype.keyPair=function(e){return new c(this,e)},d.prototype.keyFromPrivate=function(e,t){return c.fromPrivate(this,e,t)},d.prototype.keyFromPublic=function(e,t){return c.fromPublic(this,e,t)},d.prototype.genKeyPair=function(e){e||(e={});for(var t=new i({hash:this.hash,pers:e.pers,persEnc:e.persEnc||"utf8",entropy:e.entropy||f(this.hash.hmacStrength),entropyEnc:e.entropy&&e.entropyEnc||"utf8",nonce:this.n.toArray()}),r=this.n.byteLength(),a=this.n.sub(new n(2));;){var o=new n(t.generate(r));if(!(o.cmp(a)>0))return o.iaddn(1),this.keyFromPrivate(o)}},d.prototype._truncateToN=function(e,t){var r=8*e.byteLength()-this.n.bitLength();return r>0&&(e=e.ushrn(r)),!t&&e.cmp(this.n)>=0?e.sub(this.n):e},d.prototype.sign=function(e,t,r,a){"object"===typeof r&&(a=r,r=null),a||(a={}),t=this.keyFromPrivate(t,r),e=this._truncateToN(new n(e,16));for(var o=this.n.byteLength(),f=t.getPrivate().toArray("be",o),s=e.toArray("be",o),c=new i({hash:this.hash,entropy:f,nonce:s,pers:a.pers,persEnc:a.persEnc||"utf8"}),d=this.n.sub(new n(1)),h=0;;h++){var l=a.k?a.k(h):new n(c.generate(this.n.byteLength()));if(!((l=this._truncateToN(l,!0)).cmpn(1)<=0||l.cmp(d)>=0)){var p=this.g.mul(l);if(!p.isInfinity()){var b=p.getX(),y=b.umod(this.n);if(0!==y.cmpn(0)){var v=l.invm(this.n).mul(y.mul(t.getPrivate()).iadd(e));if(0!==(v=v.umod(this.n)).cmpn(0)){var g=(p.getY().isOdd()?1:0)|(0!==b.cmp(y)?2:0);return a.canonical&&v.cmp(this.nh)>0&&(v=this.n.sub(v),g^=1),new u({r:y,s:v,recoveryParam:g})}}}}}},d.prototype.verify=function(e,t,r,i){e=this._truncateToN(new n(e,16)),r=this.keyFromPublic(r,i);var a=(t=new u(t,"hex")).r,o=t.s;if(a.cmpn(1)<0||a.cmp(this.n)>=0)return!1;if(o.cmpn(1)<0||o.cmp(this.n)>=0)return!1;var f,s=o.invm(this.n),c=s.mul(e).umod(this.n),d=s.mul(a).umod(this.n);return this.curve._maxwellTrick?!(f=this.g.jmulAdd(c,r.getPublic(),d)).isInfinity()&&f.eqXToP(a):!(f=this.g.mulAdd(c,r.getPublic(),d)).isInfinity()&&0===f.getX().umod(this.n).cmp(a)},d.prototype.recoverPubKey=function(e,t,r,i){s((3&r)===r,"The recovery param is more than two bits"),t=new u(t,i);var a=this.n,o=new n(e),f=t.r,c=t.s,d=1&r,h=r>>1;if(f.cmp(this.curve.p.umod(this.curve.n))>=0&&h)throw new Error("Unable to find sencond key candinate");f=h?this.curve.pointFromX(f.add(this.curve.n),d):this.curve.pointFromX(f,d);var l=t.r.invm(a),p=a.sub(o).mul(l).umod(a),b=c.mul(l).umod(a);return this.g.mulAdd(p,f,b)},d.prototype.getKeyRecoveryParam=function(e,t,r,n){if(null!==(t=new u(t,n)).recoveryParam)return t.recoveryParam;for(var i=0;i<4;i++){var a;try{a=this.recoverPubKey(e,t,i)}catch(e){continue}if(a.eq(r))return i}throw new Error("Unable to find valid recovery factor")}},554:function(e,t,r){"use strict";var n=r(29),i=r(372),a=r(65);function o(e){if(!(this instanceof o))return new o(e);this.hash=e.hash,this.predResist=!!e.predResist,this.outLen=this.hash.outSize,this.minEntropy=e.minEntropy||this.hash.hmacStrength,this._reseed=null,this.reseedInterval=null,this.K=null,this.V=null;var t=i.toArray(e.entropy,e.entropyEnc||"hex"),r=i.toArray(e.nonce,e.nonceEnc||"hex"),n=i.toArray(e.pers,e.persEnc||"hex");a(t.length>=this.minEntropy/8,"Not enough entropy. 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r=1+(Math.log(t)/Math.LN2>>>3);for(e.push(128|r);--r;)e.push(t>>>(r<<3)&255);e.push(t)}}e.exports=o,o.prototype._importDER=function(e,t){e=i.toArray(e,t);var r=new f;if(48!==e[r.place++])return!1;var a=s(e,r);if(!1===a)return!1;if(a+r.place!==e.length)return!1;if(2!==e[r.place++])return!1;var o=s(e,r);if(!1===o)return!1;var c=e.slice(r.place,o+r.place);if(r.place+=o,2!==e[r.place++])return!1;var u=s(e,r);if(!1===u)return!1;if(e.length!==u+r.place)return!1;var d=e.slice(r.place,u+r.place);if(0===c[0]){if(!(128&c[1]))return!1;c=c.slice(1)}if(0===d[0]){if(!(128&d[1]))return!1;d=d.slice(1)}return this.r=new n(c),this.s=new n(d),this.recoveryParam=null,!0},o.prototype.toDER=function(e){var t=this.r.toArray(),r=this.s.toArray();for(128&t[0]&&(t=[0].concat(t)),128&r[0]&&(r=[0].concat(r)),t=c(t),r=c(r);!r[0]&&!(128&r[1]);)r=r.slice(1);var n=[2];u(n,t.length),(n=n.concat(t)).push(2),u(n,r.length);var a=n.concat(r),o=[48];return 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e=this.hash(),t=0;t<arguments.length;t++)e.update(arguments[t]);return a.intFromLE(e.digest()).umod(this.curve.n)},u.prototype.keyFromPublic=function(e){return s.fromPublic(this,e)},u.prototype.keyFromSecret=function(e){return s.fromSecret(this,e)},u.prototype.makeSignature=function(e){return e instanceof c?e:new c(this,e)},u.prototype.encodePoint=function(e){var t=e.getY().toArray("le",this.encodingLength);return t[this.encodingLength-1]|=e.getX().isOdd()?128:0,t},u.prototype.decodePoint=function(e){var t=(e=a.parseBytes(e)).length-1,r=e.slice(0,t).concat(-129&e[t]),n=0!==(128&e[t]),i=a.intFromLE(r);return this.curve.pointFromY(i,n)},u.prototype.encodeInt=function(e){return e.toArray("le",this.encodingLength)},u.prototype.decodeInt=function(e){return a.intFromLE(e)},u.prototype.isPoint=function(e){return e instanceof this.pointClass}},558:function(e,t,r){"use strict";var n=r(176),i=n.assert,a=n.parseBytes,o=n.cachedProperty;function 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