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Final (?) Refactoring

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Remove "encoded" from some function names,
remove obsolete functions.
This commit is contained in:
Johannes Leupold 2024-11-12 22:07:06 +01:00
parent 0b03b249cb
commit 2dd71befb2
10 changed files with 86 additions and 163 deletions
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43
multiplatform-crypto-libsodium-bindings/src/commonMain/kotlin/com.ionspin.kotlin.crypto/ed25519/Ed25519.kt
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@ -21,9 +21,9 @@ expect object Ed25519LowLevel {
fun isValidPoint(encoded: UByteArray): Boolean
fun addPoints(p: UByteArray, q: UByteArray): UByteArray
fun subtractPoints(p: UByteArray, q: UByteArray): UByteArray
fun encodedPointFromUniform(uniform: UByteArray): UByteArray
fun randomEncodedPoint(): UByteArray
fun randomEncodedScalar(): UByteArray
fun pointFromUniform(uniform: UByteArray): UByteArray
fun randomPoint(): UByteArray
fun randomScalar(): UByteArray
fun invertScalar(scalar: UByteArray): UByteArray
fun negateScalar(scalar: UByteArray): UByteArray
fun complementScalar(scalar: UByteArray): UByteArray
@ -38,16 +38,14 @@ expect object Ed25519LowLevel {
}
object Ed25519 {
data class Point(private val encoded: UByteArray) {
data class Point(val encoded: UByteArray) {
companion object {
val IDENTITY: Point = Point(UByteArray(crypto_core_ed25519_BYTES))
val BASE: Point = multiplyBaseNoClamp(Scalar.ONE)
fun fromUniform(uniform: UByteArray): Point = Point(Ed25519LowLevel.encodedPointFromUniform(uniform))
fun fromUniform(uniform: UByteArray): Point = Point(Ed25519LowLevel.pointFromUniform(uniform))
fun random(): Point = Point(Ed25519LowLevel.randomEncodedPoint())
fun random(): Point = Point(Ed25519LowLevel.randomPoint())
fun multiplyBase(n: Scalar): Point = Point(Ed25519LowLevel.scalarMultiplicationBase(n.encoded))
@ -55,10 +53,11 @@ object Ed25519 {
Point(Ed25519LowLevel.scalarMultiplicationBaseNoClamp(n.encoded))
fun fromHex(hex: String): Point = Point(LibsodiumUtil.fromHex(hex))
fun isValid(point: Point) : Boolean = Ed25519LowLevel.isValidPoint(point.encoded)
}
val isValid: Boolean
get() = Ed25519LowLevel.isValidPoint(encoded)
operator fun plus(q: Point): Point = Point(Ed25519LowLevel.addPoints(this.encoded, q.encoded))
operator fun minus(q: Point): Point = Point(Ed25519LowLevel.subtractPoints(this.encoded, q.encoded))
@ -73,22 +72,12 @@ object Ed25519 {
}
data class Scalar(val encoded: UByteArray) {
companion object {
val ZERO = fromUInt(0U)
val ONE = fromUInt(1U)
val TWO = fromUInt(2U)
fun random(): Scalar = Scalar(Ed25519LowLevel.randomEncodedScalar())
fun invert(scalar: Scalar): Scalar = Scalar(Ed25519LowLevel.invertScalar(scalar.encoded))
fun negate(scalar: Scalar): Scalar = Scalar(Ed25519LowLevel.negateScalar(scalar.encoded))
fun reduce(scalar: Scalar): Scalar = Scalar(Ed25519LowLevel.reduceScalar(scalar.encoded))
fun complement(scalar: Scalar) : Scalar = Scalar(Ed25519LowLevel.complementScalar(scalar.encoded))
fun random(): Scalar = Scalar(Ed25519LowLevel.randomScalar())
fun fromUInt(i: UInt): Scalar = fromULong(i.toULong())
@ -135,19 +124,19 @@ object Ed25519 {
operator fun times(y: UInt): Scalar = this * fromUInt(y)
operator fun times(y: ULong): Scalar = this * fromULong(y)
operator fun div(y: Scalar): Scalar = times(invert(y))
operator fun div(y: Scalar): Scalar = times(y.invert())
operator fun div(y: UInt): Scalar = this / fromUInt(y)
operator fun div(y: ULong): Scalar = this / fromULong(y)
operator fun unaryMinus(): Scalar = negate(this)
operator fun unaryMinus(): Scalar = Scalar(Ed25519LowLevel.negateScalar(this.encoded))
operator fun times(p: Point): Point = p.times(this)
fun times(p: Point, clamp: Boolean): Point =
if (clamp) p.times(this) else p.times(this, clamp)
fun reduce(): Scalar = reduce(this)
fun invert(): Scalar = invert(this)
fun complement(): Scalar = complement(this)
fun reduce(): Scalar = Scalar(Ed25519LowLevel.reduceScalar(this.encoded))
fun invert(): Scalar = Scalar(Ed25519LowLevel.invertScalar(this.encoded))
fun complement(): Scalar = Scalar(Ed25519LowLevel.complementScalar(this.encoded))
fun multiplyWithBase(): Point = Point.multiplyBase(this)
@ -157,7 +146,5 @@ object Ed25519 {
override fun equals(other: Any?): Boolean = (other as? Scalar)?.encoded?.contentEquals(encoded) == true
override fun hashCode(): Int = encoded.contentHashCode()
}
}

135
multiplatform-crypto-libsodium-bindings/src/commonMain/kotlin/com.ionspin.kotlin.crypto/ristretto255/Ristretto255.kt
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@ -20,9 +20,9 @@ expect object Ristretto255LowLevel {
fun isValidPoint(encoded: UByteArray): Boolean
fun addPoints(p: UByteArray, q: UByteArray): UByteArray
fun subtractPoints(p: UByteArray, q: UByteArray): UByteArray
fun encodedPointFromHash(hash: UByteArray): UByteArray
fun randomEncodedPoint(): UByteArray
fun randomEncodedScalar(): UByteArray
fun pointFromHash(hash: UByteArray): UByteArray
fun randomPoint(): UByteArray
fun randomScalar(): UByteArray
fun invertScalar(scalar: UByteArray): UByteArray
fun negateScalar(scalar: UByteArray): UByteArray
fun complementScalar(scalar: UByteArray): UByteArray
@ -35,62 +35,23 @@ expect object Ristretto255LowLevel {
}
object Ristretto255 {
// fun add(p: Point, q: Point): Point =
// Point(addPoints(p.encoded, q.encoded))
//
// fun subtract(p: Point, q: Point): Point =
// Point(subtractPoints(p.encoded, q.encoded))
//
// fun pointFromHash(hash: UByteArray): Point = Point(encodedPointFromHash(hash))
//
// fun randomPoint(): Point = Point(randomEncodedPoint())
//
// fun randomScalar(): Scalar = Scalar(randomEncodedScalar())
//
// fun invert(scalar: Scalar): Scalar =
// Scalar(invertScalar(scalar.encoded))
//
// fun negate(scalar: Scalar): Scalar =
// Scalar(negateScalar(scalar.encoded))
//
// fun complement(scalar: Scalar): Scalar =
// Scalar(complementScalar(scalar.encoded))
//
// fun add(x: Scalar, y: Scalar): Scalar =
// Scalar(addScalars(x.encoded, y.encoded))
//
// fun subtract(x: Scalar, y: Scalar): Scalar =
// Scalar(subtractScalars(x.encoded, y.encoded))
//
// fun multiply(x: Scalar, y: Scalar): Scalar =
// Scalar(multiplyScalars(x.encoded, y.encoded))
//
// fun reduce(scalar: Scalar): Scalar =
// Scalar(reduceScalar(scalar.encoded))
//
// fun scalarMultiplication(p: Point, n: Scalar): Point =
// Point(scalarMultiplication(n.encoded, p.encoded))
//
// fun scalarMultiplicationBase(n: Scalar): Point =
// Point(scalarMultiplicationBase(n.encoded))
data class Point(val encoded: UByteArray) {
companion object {
val IDENTITY: Point = Point(UByteArray(crypto_core_ristretto255_BYTES))
val BASE: Point = multiplyBase(Scalar.ONE)
fun fromHash(hash: UByteArray): Point = Point(Ristretto255LowLevel.encodedPointFromHash(hash))
fun fromHash(hash: UByteArray): Point = Point(Ristretto255LowLevel.pointFromHash(hash))
fun random(): Point = Point(Ristretto255LowLevel.randomEncodedPoint())
fun random(): Point = Point(Ristretto255LowLevel.randomPoint())
fun multiplyBase(n: Scalar): Point = Point(Ristretto255LowLevel.scalarMultiplicationBase(n.encoded))
fun fromHex(hex: String): Point = Point(LibsodiumUtil.fromHex(hex))
fun isValid(point: Point) : Boolean = Ristretto255LowLevel.isValidPoint(point.encoded)
}
val isValid: Boolean
get() = Ristretto255LowLevel.isValidPoint(this.encoded)
operator fun plus(q: Point): Point = Point(Ristretto255LowLevel.addPoints(this.encoded, q.encoded))
operator fun minus(q: Point): Point = Point(Ristretto255LowLevel.subtractPoints(this.encoded, q.encoded))
@ -100,60 +61,15 @@ object Ristretto255 {
override fun equals(other: Any?): Boolean = (other as? Point)?.encoded?.contentEquals(encoded) == true
override fun hashCode(): Int = encoded.contentHashCode()
}
data class Scalar(val encoded: UByteArray) {
operator fun plus(y: Scalar): Scalar = Scalar(Ristretto255LowLevel.addScalars(this.encoded, y.encoded))
operator fun plus(y: UInt): Scalar = this + fromUInt(y)
operator fun plus(y: ULong): Scalar = this + fromULong(y)
operator fun minus(y: Scalar): Scalar = Scalar(Ristretto255LowLevel.subtractScalars(this.encoded, y.encoded))
operator fun minus(y: UInt): Scalar = this - fromUInt(y)
operator fun minus(y: ULong): Scalar = this - fromULong(y)
operator fun times(y: Scalar): Scalar = Scalar(Ristretto255LowLevel.multiplyScalars(this.encoded, y.encoded))
operator fun times(y: UInt): Scalar = this * fromUInt(y)
operator fun times(y: ULong): Scalar = this * fromULong(y)
operator fun div(y: Scalar): Scalar = Scalar(Ristretto255LowLevel.multiplyScalars(this.encoded, y.invert().encoded))
operator fun div(y: UInt): Scalar = this / fromUInt(y)
operator fun div(y: ULong): Scalar = this / fromULong(y)
operator fun unaryMinus(): Scalar = negate(this)
operator fun times(p: Point): Point = p.times(this)
fun reduce(): Scalar = reduce(this)
fun invert(): Scalar = invert(this)
fun complement(): Scalar = complement(this)
fun multiplyWithBase(): Point = Point.multiplyBase(this)
fun toHex(): String = LibsodiumUtil.toHex(encoded)
override fun equals(other: Any?): Boolean = (other as? Scalar)?.encoded?.contentEquals(encoded) == true
override fun hashCode(): Int = encoded.contentHashCode()
companion object {
val ZERO = fromUInt(0U)
val ONE = fromUInt(1U)
val TWO = fromUInt(2U)
fun random(): Scalar = Scalar(Ristretto255LowLevel.randomEncodedScalar())
fun invert(scalar: Scalar): Scalar =
Scalar(Ristretto255LowLevel.invertScalar(scalar.encoded))
fun negate(scalar: Scalar): Scalar =
Scalar(Ristretto255LowLevel.negateScalar(scalar.encoded))
fun reduce(scalar: Scalar): Scalar =
Scalar(Ristretto255LowLevel.reduceScalar(scalar.encoded))
fun complement(scalar: Scalar): Scalar =
Scalar(Ristretto255LowLevel.complementScalar(scalar.encoded))
fun random(): Scalar = Scalar(Ristretto255LowLevel.randomScalar())
fun fromUInt(i: UInt): Scalar = fromULong(i.toULong())
@ -188,5 +104,38 @@ object Ristretto255 {
}
}
}
operator fun plus(y: Scalar): Scalar = Scalar(Ristretto255LowLevel.addScalars(this.encoded, y.encoded))
operator fun plus(y: UInt): Scalar = this + fromUInt(y)
operator fun plus(y: ULong): Scalar = this + fromULong(y)
operator fun minus(y: Scalar): Scalar = Scalar(Ristretto255LowLevel.subtractScalars(this.encoded, y.encoded))
operator fun minus(y: UInt): Scalar = this - fromUInt(y)
operator fun minus(y: ULong): Scalar = this - fromULong(y)
operator fun times(y: Scalar): Scalar = Scalar(Ristretto255LowLevel.multiplyScalars(this.encoded, y.encoded))
operator fun times(y: UInt): Scalar = this * fromUInt(y)
operator fun times(y: ULong): Scalar = this * fromULong(y)
operator fun div(y: Scalar): Scalar =
Scalar(Ristretto255LowLevel.multiplyScalars(this.encoded, y.invert().encoded))
operator fun div(y: UInt): Scalar = this / fromUInt(y)
operator fun div(y: ULong): Scalar = this / fromULong(y)
operator fun unaryMinus(): Scalar = Scalar(Ristretto255LowLevel.negateScalar(this.encoded))
operator fun times(p: Point): Point = p.times(this)
fun reduce(): Scalar = Scalar(Ristretto255LowLevel.reduceScalar(this.encoded))
fun invert(): Scalar = Scalar(Ristretto255LowLevel.invertScalar(this.encoded))
fun complement(): Scalar = Scalar(Ristretto255LowLevel.complementScalar(this.encoded))
fun multiplyWithBase(): Point = Point.multiplyBase(this)
fun toHex(): String = LibsodiumUtil.toHex(encoded)
override fun equals(other: Any?): Boolean = (other as? Scalar)?.encoded?.contentEquals(encoded) == true
override fun hashCode(): Int = encoded.contentHashCode()
}
}

22
multiplatform-crypto-libsodium-bindings/src/commonTest/kotlin/com/ionspin/kotlin/crypto/ed25519/Ed25519Test.kt
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@ -20,16 +20,6 @@ class Ed25519Test {
"f5ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff7f",
)
// Test vectors generated with sodium.js
private val fromHashTestVectors = arrayOf(
"The sodium crypto library compiled to WebAssembly and pure JavaScript" to "50127230808e661643a11badce3c7220ab8de25f890528694f5155ab9c5d5339",
"using Emscripten, with automatically generated wrappers to" to "546d28c823c00b7d1c355c2f3ed6faaed2b7f406b45568c83f14b00ad88c212d",
"make it easy to use in web applications." to "69f1db12b628f6a0573c3ca440dbfe23c161d0a832cf4ca263ed33d15f337780",
"The complete library weighs 188 KB" to "9ad2302066752dccc14e26d7da4bb7a839c211a7e46f558ff106c632106d8f71",
"(minified, gzipped, includes pure JS + WebAssembly versions)" to "07787c86d65d8157b0e7bbf634c46e638f7dc88c560f60dfd1f5e85de64d681c",
"and can run in a web browser as well as server-side." to "c33fedca4b8e6fdd7ecc4109ec624f81900d8c207e1497297f4ca87c154c0640",
)
// Test vectors generated with sodium.js
private val fromUniformTestVectors = arrayOf(
"d5d31a04bf9cd6b4f3f014ab57f95d439a0bd741e71f1ecb580143235545255e" to "cb9fff40134270e80e0dcfcdc66aa4ebf02cd27c9d9d26adfdf78d0012ad1b62",
@ -98,9 +88,9 @@ class Ed25519Test {
assertNotEquals(q, r)
assertNotEquals(r, p)
assertTrue { Ed25519.Point.isValid(p) }
assertTrue { Ed25519.Point.isValid(q) }
assertTrue { Ed25519.Point.isValid(r) }
assertTrue { p.isValid }
assertTrue { q.isValid }
assertTrue { r.isValid }
}
}
@ -119,15 +109,15 @@ class Ed25519Test {
fun testIsValidPoint() = runTest {
LibsodiumInitializer.initializeWithCallback {
for (hexEncoded in badEncodings) {
assertFalse { Ed25519.Point.isValid(Ed25519.Point.fromHex(hexEncoded)) }
assertFalse { Ed25519.Point.fromHex(hexEncoded).isValid }
}
for (hexEncoded in basePointSmallMultiplesNoClamp) {
assertTrue { Ed25519.Point.isValid(Ed25519.Point.fromHex(hexEncoded)) }
assertTrue { Ed25519.Point.fromHex(hexEncoded).isValid }
}
for (hexEncoded in basePointSmallMultiplesClamped) {
assertTrue { Ed25519.Point.isValid(Ed25519.Point.fromHex(hexEncoded)) }
assertTrue { Ed25519.Point.fromHex(hexEncoded).isValid }
}
}
}

13
multiplatform-crypto-libsodium-bindings/src/commonTest/kotlin/com/ionspin/kotlin/crypto/ristretto255/Ristretto255Test.kt
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@ -1,9 +1,7 @@
package com.ionspin.kotlin.crypto.ristretto255
import com.ionspin.kotlin.crypto.LibsodiumInitializer
import com.ionspin.kotlin.crypto.ed25519.Ed25519
import com.ionspin.kotlin.crypto.hash.Hash
import com.ionspin.kotlin.crypto.util.LibsodiumUtil
import com.ionspin.kotlin.crypto.util.encodeToUByteArray
import com.ionspin.kotlin.crypto.util.runTest
import kotlin.test.Test
@ -95,10 +93,9 @@ class Ristretto255Test {
assertNotEquals(r, p)
assertTrue { Ristretto255.Point.isValid(p) }
assertTrue { Ristretto255.Point.isValid(q) }
assertTrue { Ristretto255.Point.isValid(r) }
assertTrue { p.isValid }
assertTrue { q.isValid }
assertTrue { r.isValid }
}
}
@ -117,11 +114,11 @@ class Ristretto255Test {
fun testIsValidPoint() = runTest {
LibsodiumInitializer.initializeWithCallback {
for (hexEncoded in badEncodings) {
assertFalse { Ristretto255.Point.isValid(Ristretto255.Point.fromHex(hexEncoded)) }
assertFalse { Ristretto255.Point.fromHex(hexEncoded).isValid }
}
for (hexEncoded in basePointSmallMultiples) {
assertTrue { Ristretto255.Point.isValid(Ristretto255.Point.fromHex(hexEncoded)) }
assertTrue { Ristretto255.Point.fromHex(hexEncoded).isValid }
}
}
}

6
multiplatform-crypto-libsodium-bindings/src/jsMain/kotlin/com/ionspin/kotlin/crypto/ed25519/Ed25519LowLevel.kt
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@ -20,19 +20,19 @@ actual object Ed25519LowLevel {
return result.toUByteArray()
}
actual fun encodedPointFromUniform(uniform: UByteArray): UByteArray {
actual fun pointFromUniform(uniform: UByteArray): UByteArray {
val result = getSodium().crypto_core_ed25519_from_uniform(uniform.toUInt8Array())
return result.toUByteArray()
}
actual fun randomEncodedPoint(): UByteArray {
actual fun randomPoint(): UByteArray {
val result = getSodium().crypto_core_ed25519_random()
return result.toUByteArray()
}
actual fun randomEncodedScalar(): UByteArray {
actual fun randomScalar(): UByteArray {
val result = getSodium().crypto_core_ed25519_scalar_random()
return result.toUByteArray()

6
multiplatform-crypto-libsodium-bindings/src/jsMain/kotlin/com/ionspin/kotlin/crypto/ristretto255/Ristretto255LowLevel.kt
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@ -20,19 +20,19 @@ actual object Ristretto255LowLevel {
return result.toUByteArray()
}
actual fun encodedPointFromHash(hash: UByteArray): UByteArray {
actual fun pointFromHash(hash: UByteArray): UByteArray {
val result = getSodium().crypto_core_ristretto255_from_hash(hash.toUInt8Array())
return result.toUByteArray()
}
actual fun randomEncodedPoint(): UByteArray {
actual fun randomPoint(): UByteArray {
val result = getSodium().crypto_core_ristretto255_random()
return result.toUByteArray()
}
actual fun randomEncodedScalar(): UByteArray {
actual fun randomScalar(): UByteArray {
val result = getSodium().crypto_core_ristretto255_scalar_random()
return result.toUByteArray()

6
multiplatform-crypto-libsodium-bindings/src/jvmMain/kotlin/com/ionspin/kotlin/crypto/ed25519/Ed25519LowLevel.kt
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@ -25,7 +25,7 @@ actual object Ed25519LowLevel {
return result
}
actual fun encodedPointFromUniform(uniform: UByteArray): UByteArray {
actual fun pointFromUniform(uniform: UByteArray): UByteArray {
val result = UByteArray(crypto_core_ed25519_BYTES)
sodiumJna.crypto_core_ed25519_from_uniform(result.asByteArray(), uniform.asByteArray())
@ -34,11 +34,11 @@ actual object Ed25519LowLevel {
return result
}
actual fun randomEncodedPoint(): UByteArray = UByteArray(crypto_core_ed25519_BYTES).also {
actual fun randomPoint(): UByteArray = UByteArray(crypto_core_ed25519_BYTES).also {
sodiumJna.crypto_core_ed25519_random(it.asByteArray())
}
actual fun randomEncodedScalar(): UByteArray = UByteArray(crypto_core_ed25519_SCALARBYTES).also {
actual fun randomScalar(): UByteArray = UByteArray(crypto_core_ed25519_SCALARBYTES).also {
sodiumJna.crypto_core_ed25519_scalar_random(it.asByteArray())
}

6
multiplatform-crypto-libsodium-bindings/src/jvmMain/kotlin/com/ionspin/kotlin/crypto/ristretto255/Ristretto255LowLevel.kt
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@ -25,7 +25,7 @@ actual object Ristretto255LowLevel {
return result
}
actual fun encodedPointFromHash(hash: UByteArray): UByteArray {
actual fun pointFromHash(hash: UByteArray): UByteArray {
val result = UByteArray(crypto_core_ristretto255_BYTES)
sodiumJna.crypto_core_ristretto255_from_hash(result.asByteArray(), hash.asByteArray())
@ -33,11 +33,11 @@ actual object Ristretto255LowLevel {
return result
}
actual fun randomEncodedPoint(): UByteArray = UByteArray(crypto_core_ristretto255_BYTES).also {
actual fun randomPoint(): UByteArray = UByteArray(crypto_core_ristretto255_BYTES).also {
sodiumJna.crypto_core_ristretto255_random(it.asByteArray())
}
actual fun randomEncodedScalar(): UByteArray = UByteArray(crypto_core_ristretto255_SCALARBYTES).also {
actual fun randomScalar(): UByteArray = UByteArray(crypto_core_ristretto255_SCALARBYTES).also {
sodiumJna.crypto_core_ristretto255_scalar_random(it.asByteArray())
}

6
multiplatform-crypto-libsodium-bindings/src/nativeMain/kotlin/com/ionspin/kotlin/crypto/ed25519/Ed25519LowLevel.kt
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@ -57,7 +57,7 @@ actual object Ed25519LowLevel {
return result
}
actual fun encodedPointFromUniform(uniform: UByteArray): UByteArray {
actual fun pointFromUniform(uniform: UByteArray): UByteArray {
val result = UByteArray(crypto_core_ed25519_BYTES)
result.usePinned { resultPinned ->
@ -70,11 +70,11 @@ actual object Ed25519LowLevel {
return result
}
actual fun randomEncodedPoint(): UByteArray = UByteArray(crypto_core_ed25519_BYTES).apply {
actual fun randomPoint(): UByteArray = UByteArray(crypto_core_ed25519_BYTES).apply {
usePinned { crypto_core_ed25519_random(it.toPtr()) }
}
actual fun randomEncodedScalar(): UByteArray = UByteArray(crypto_core_ed25519_SCALARBYTES).apply {
actual fun randomScalar(): UByteArray = UByteArray(crypto_core_ed25519_SCALARBYTES).apply {
usePinned { crypto_core_ed25519_scalar_random(it.toPtr()) }
}

6
multiplatform-crypto-libsodium-bindings/src/nativeMain/kotlin/com/ionspin/kotlin/crypto/ristretto255/Ristretto255LowLevel.kt
View File

@ -55,7 +55,7 @@ actual object Ristretto255LowLevel {
return result
}
actual fun encodedPointFromHash(hash: UByteArray): UByteArray {
actual fun pointFromHash(hash: UByteArray): UByteArray {
val result = UByteArray(crypto_core_ristretto255_BYTES)
result.usePinned { resultPinned ->
@ -67,11 +67,11 @@ actual object Ristretto255LowLevel {
return result
}
actual fun randomEncodedPoint(): UByteArray = UByteArray(crypto_core_ristretto255_BYTES).apply {
actual fun randomPoint(): UByteArray = UByteArray(crypto_core_ristretto255_BYTES).apply {
usePinned { crypto_core_ristretto255_random(it.toPtr()) }
}
actual fun randomEncodedScalar(): UByteArray = UByteArray(crypto_core_ristretto255_SCALARBYTES).apply {
actual fun randomScalar(): UByteArray = UByteArray(crypto_core_ristretto255_SCALARBYTES).apply {
usePinned { crypto_core_ristretto255_scalar_random(it.toPtr()) }
}