## ECP4 **Kind**: global class **this**: {ECP4} * [ECP4](#ECP4) * [new ECP4()](#new_ECP4_new) * _instance_ * [.is_infinity(1)](#ECP4+is_infinity) * [.copy(P)](#ECP4+copy) * [.inf()](#ECP4+inf) * [.cmove()](#ECP4+cmove) * [.select()](#ECP4+select) * [.equals(Q)](#ECP4+equals) * [.neg()](#ECP4+neg) * [.affine()](#ECP4+affine) * [.getX()](#ECP4+getX) * [.getY()](#ECP4+getY) * [.getx()](#ECP4+getx) * [.gety()](#ECP4+gety) * [.getz()](#ECP4+getz) * [.toBytes(b)](#ECP4+toBytes) * [.toString()](#ECP4+toString) ⇒ * [.setxy(ix, iy)](#ECP4+setxy) * [.setx(ix)](#ECP4+setx) * [.frob()](#ECP4+frob) * [.dbl()](#ECP4+dbl) * [.add()](#ECP4+add) * [.sub(Q)](#ECP4+sub) * [.mul(e)](#ECP4+mul) * _static_ * [.generator()](#ECP4.generator) * [.fromBytes(b)](#ECP4.fromBytes) * [.RHS(x)](#ECP4.RHS) * [.mul8()](#ECP4.mul8) ### new ECP4() Creates an instance of ECP4 ### ecP4.is\_infinity(1) Tests for ECP4 point equal to infinity **Kind**: instance method of [ECP4](#ECP4) **this**: {ECP4} | Param | Description | | --- | --- | | 1 | if infinity, else returns 0 | ### ecP4.copy(P) Copy ECP4 point to another ECP4 point **Kind**: instance method of [ECP4](#ECP4) **this**: {ECP4} | Param | Description | | --- | --- | | P | ECP4 instance | ### ecP4.inf() conditional move of Q to P dependant on d **Kind**: instance method of [ECP4](#ECP4) **this**: {ECP4} ### ecP4.cmove() conditional move of Q to P dependant on d **Kind**: instance method of [ECP4](#ECP4) **this**: {ECP4} ### ecP4.select() Constant time select from pre-computed table **Kind**: instance method of [ECP4](#ECP4) **this**: {ECP4} ### ecP4.equals(Q) Test P == Q **Kind**: instance method of [ECP4](#ECP4) **this**: {ECP4} | Param | Description | | --- | --- | | Q | ECP4 instance | ### ecP4.neg() set this=-this **Kind**: instance method of [ECP4](#ECP4) **this**: {ECP4} ### ecP4.affine() convert this to affine, from (x,y,z) to (x,y) **Kind**: instance method of [ECP4](#ECP4) **this**: {ECP4} ### ecP4.getX() extract affine x as ctx.FP2 **Kind**: instance method of [ECP4](#ECP4) **this**: {ECP4} ### ecP4.getY() extract affine y as ctx.FP2 **Kind**: instance method of [ECP4](#ECP4) **this**: {ECP4} ### ecP4.getx() extract projective x **Kind**: instance method of [ECP4](#ECP4) **this**: {ECP4} ### ecP4.gety() extract projective y **Kind**: instance method of [ECP4](#ECP4) **this**: {ECP4} ### ecP4.getz() extract projective z **Kind**: instance method of [ECP4](#ECP4) **this**: {ECP4} ### ecP4.toBytes(b) convert this to byte arrayextract projective x **Kind**: instance method of [ECP4](#ECP4) **this**: {ECP4} | Param | Description | | --- | --- | | b | byte array output | ### ecP4.toString() ⇒ convert this to hex string **Kind**: instance method of [ECP4](#ECP4) **Returns**: hex string **this**: {ECP4} ### ecP4.setxy(ix, iy) set this=(x,y) **Kind**: instance method of [ECP4](#ECP4) **this**: {ECP4} | Param | Description | | --- | --- | | ix | x-value | | iy | y-value | ### ecP4.setx(ix) set this=(x,.) **Kind**: instance method of [ECP4](#ECP4) **this**: {ECP4} | Param | Description | | --- | --- | | ix | x-value | ### ecP4.frob() set this*=q, where q is Modulus, using Frobenius **Kind**: instance method of [ECP4](#ECP4) **this**: {ECP4} ### ecP4.dbl() this+=this **Kind**: instance method of [ECP4](#ECP4) **this**: {ECP4} ### ecP4.add() Adds ECP4 instances param Q ECP4 instance **Kind**: instance method of [ECP4](#ECP4) **this**: {ECP4} ### ecP4.sub(Q) Subtracts ECP instance Q from this **Kind**: instance method of [ECP4](#ECP4) **this**: {ECP4} | Param | Description | | --- | --- | | Q | ECP4 instance | ### ecP4.mul(e) Multiplies an ECP4 instance P by a BIG, side-channel resistant **Kind**: instance method of [ECP4](#ECP4) **this**: {ECP4} | Param | Description | | --- | --- | | e | BIG number multiplier | ### ECP4.generator() Set group generator **Kind**: static method of [ECP4](#ECP4) **this**: {ECP4} ### ECP4.fromBytes(b) convert from byte array to point **Kind**: static method of [ECP4](#ECP4) **this**: {ECP4} | Param | Description | | --- | --- | | b | input byte array | ### ECP4.RHS(x) Calculate RHS of curve equation x^3+B **Kind**: static method of [ECP4](#ECP4) **this**: {ECP4} | Param | Description | | --- | --- | | x | x-value | ### ECP4.mul8() Calculate P=u0.Q0+u1*Q1+u2*Q2+u3*Q3... **Kind**: static method of [ECP4](#ECP4) **this**: {ECP4}