indispensable/at.asitplus.signum.indispensable/ECPoint

ECPoint

sealed class ECPoint(source)

elliptic curve point in homogeneous coordinates (X,Y,Z) to access affine coordinates, normalize the point. the point at infinity cannot be normalized.

See also

Inheritors

Types

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object Companion
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class General : ECPoint
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@Serializable(with = ECPointSerializer::class)
class Normalized : ECPoint

normalized elliptic curve point (Z = 1). cannot be the point at infinity.

Properties

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val curve: ECCurve

the curve on which this point lies

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val homX: ModularBigInteger

homogeneous X coordinate of point (X : Y : Z)

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val homY: ModularBigInteger

homogeneous Y coordinate of point (X : Y : Z)

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val homZ: ModularBigInteger

homogeneous Z coordinate of point (X : Y : Z)

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val isPointAtInfinity: Boolean

whether this is the additive identity (point at infinity). the point at infinity cannot be normalized.

Functions

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fun ECPoint.asPublicKey(preferCompressed: Boolean = false): CryptoPublicKey.EC
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fun ECPoint.double(): ECPoint

adds this to this and returns the result

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open operator override fun equals(other: Any?): Boolean
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open override fun hashCode(): Int
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inline operator fun ECPoint.minus(other: ECPoint): ECPoint
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fun normalize(): ECPoint.Normalized

normalizes this point, converting it to affine coordinates. throws for the point at infinity.

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operator fun ECPoint.plus(other: ECPoint): ECPoint

adds other to this and returns the result

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inline fun ECPoint.times(v: BigInteger): ECPoint
inline fun ECPoint.times(v: ModularBigInteger): ECPoint
inline fun ECPoint.times(v: Int): ECPoint
inline fun ECPoint.times(v: Long): ECPoint
inline fun ECPoint.times(v: UInt): ECPoint
inline fun ECPoint.times(v: ULong): ECPoint
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open override fun toString(): String
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inline fun tryNormalize(): ECPoint.Normalized?

normalizes this point, converting it to affine coordinates. returns null for the point at infinity.

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inline operator fun ECPoint.unaryMinus(): ECPoint.General
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inline operator fun ECPoint.unaryPlus(): ECPoint