feat: add Android cross-compile script for phone benchmarking
Add build_android.sh that cross-compiles the C secp256k1 library for ARM64 using the Android NDK and places the .so in benchmark/src/main/ jniLibs/ where the benchmark APK will package it. Usage: cd quartz/src/main/c/secp256k1 ./build_android.sh cd ../../../../.. ./gradlew :benchmark:connectedAndroidTest Also: - Fix Secp256k1InstanceC.android.kt to use Secp256k1C JNI binding class (same pattern as JVM) so the JNI method names match Java_com_vitorpamplona_quartz_utils_Secp256k1C_native* - Add benchmark/src/main/jniLibs/ to .gitignore https://claude.ai/code/session_011KVZhDcV2G7idNWEBz12GY
This commit is contained in:
Claude
+43
-36
@@ -20,10 +20,15 @@
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*/
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package com.vitorpamplona.quartz.utils
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actual object Secp256k1InstanceC {
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/**
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* Android actual: delegates to Secp256k1C JNI binding class.
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* The native library is packaged as libsecp256k1_amethyst_jni.so
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* in the APK's jniLibs (built via CMake in quartz/src/main/c/).
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*/
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object Secp256k1C {
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private var loaded = false
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private fun ensureLoaded() {
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fun ensureLoaded() {
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if (!loaded) {
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System.loadLibrary("secp256k1_amethyst_jni")
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nativeInit()
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@@ -31,71 +36,73 @@ actual object Secp256k1InstanceC {
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}
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}
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private external fun nativeInit()
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@JvmStatic external fun nativeInit()
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private external fun nativePubkeyCreate(seckey: ByteArray): ByteArray?
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@JvmStatic external fun nativePubkeyCreate(seckey: ByteArray): ByteArray?
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private external fun nativePubkeyCompress(pubkey: ByteArray): ByteArray?
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@JvmStatic external fun nativePubkeyCompress(pubkey: ByteArray): ByteArray?
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private external fun nativeSecKeyVerify(seckey: ByteArray): Boolean
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@JvmStatic external fun nativeSecKeyVerify(seckey: ByteArray): Boolean
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private external fun nativeSchnorrSign(
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@JvmStatic external fun nativeSchnorrSign(
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msg: ByteArray,
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seckey: ByteArray,
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auxrand: ByteArray?,
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): ByteArray?
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private external fun nativeSchnorrSignXOnly(
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@JvmStatic external fun nativeSchnorrSignXOnly(
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msg: ByteArray,
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seckey: ByteArray,
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xonlyPub: ByteArray,
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auxrand: ByteArray?,
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): ByteArray?
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private external fun nativeSchnorrVerify(
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@JvmStatic external fun nativeSchnorrVerify(
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sig: ByteArray,
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msg: ByteArray,
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pub: ByteArray,
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): Boolean
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private external fun nativeSchnorrVerifyFast(
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@JvmStatic external fun nativeSchnorrVerifyFast(
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sig: ByteArray,
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msg: ByteArray,
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pub: ByteArray,
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): Boolean
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private external fun nativeSchnorrVerifyBatch(
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@JvmStatic external fun nativeSchnorrVerifyBatch(
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pub: ByteArray,
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sigs: Array<ByteArray>,
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msgs: Array<ByteArray>,
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): Boolean
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private external fun nativePrivKeyTweakAdd(
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@JvmStatic external fun nativePrivKeyTweakAdd(
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seckey: ByteArray,
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tweak: ByteArray,
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): ByteArray?
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private external fun nativePubKeyTweakMul(
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@JvmStatic external fun nativePubKeyTweakMul(
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pubkey: ByteArray,
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tweak: ByteArray,
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): ByteArray?
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private external fun nativeEcdhXOnly(
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@JvmStatic external fun nativeEcdhXOnly(
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xonlyPub: ByteArray,
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scalar: ByteArray,
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): ByteArray?
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}
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actual fun init() = ensureLoaded()
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actual object Secp256k1InstanceC {
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actual fun init() = Secp256k1C.ensureLoaded()
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actual fun compressedPubKeyFor(privKey: ByteArray): ByteArray {
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ensureLoaded()
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val pub65 = nativePubkeyCreate(privKey) ?: error("Invalid private key")
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return nativePubkeyCompress(pub65) ?: error("Compression failed")
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Secp256k1C.ensureLoaded()
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val pub65 = Secp256k1C.nativePubkeyCreate(privKey) ?: error("Invalid private key")
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return Secp256k1C.nativePubkeyCompress(pub65) ?: error("Compression failed")
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}
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actual fun isPrivateKeyValid(il: ByteArray): Boolean {
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ensureLoaded()
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return nativeSecKeyVerify(il)
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Secp256k1C.ensureLoaded()
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return Secp256k1C.nativeSecKeyVerify(il)
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}
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actual fun signSchnorr(
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@@ -103,8 +110,8 @@ actual object Secp256k1InstanceC {
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privKey: ByteArray,
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nonce: ByteArray?,
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): ByteArray {
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ensureLoaded()
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return nativeSchnorrSign(data, privKey, nonce) ?: error("Sign failed")
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Secp256k1C.ensureLoaded()
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return Secp256k1C.nativeSchnorrSign(data, privKey, nonce) ?: error("Sign failed")
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}
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actual fun signSchnorrWithXOnlyPubKey(
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@@ -113,8 +120,8 @@ actual object Secp256k1InstanceC {
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xOnlyPubKey: ByteArray,
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nonce: ByteArray?,
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): ByteArray {
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ensureLoaded()
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return nativeSchnorrSignXOnly(data, privKey, xOnlyPubKey, nonce) ?: error("Sign failed")
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Secp256k1C.ensureLoaded()
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return Secp256k1C.nativeSchnorrSignXOnly(data, privKey, xOnlyPubKey, nonce) ?: error("Sign failed")
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}
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actual fun verifySchnorr(
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@@ -122,8 +129,8 @@ actual object Secp256k1InstanceC {
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hash: ByteArray,
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pubKey: ByteArray,
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): Boolean {
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ensureLoaded()
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return nativeSchnorrVerify(signature, hash, pubKey)
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Secp256k1C.ensureLoaded()
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return Secp256k1C.nativeSchnorrVerify(signature, hash, pubKey)
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}
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actual fun verifySchnorrFast(
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@@ -131,8 +138,8 @@ actual object Secp256k1InstanceC {
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hash: ByteArray,
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pubKey: ByteArray,
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): Boolean {
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ensureLoaded()
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return nativeSchnorrVerifyFast(signature, hash, pubKey)
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Secp256k1C.ensureLoaded()
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return Secp256k1C.nativeSchnorrVerifyFast(signature, hash, pubKey)
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}
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actual fun verifySchnorrBatch(
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@@ -140,8 +147,8 @@ actual object Secp256k1InstanceC {
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signatures: List<ByteArray>,
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messages: List<ByteArray>,
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): Boolean {
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ensureLoaded()
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return nativeSchnorrVerifyBatch(
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Secp256k1C.ensureLoaded()
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return Secp256k1C.nativeSchnorrVerifyBatch(
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pubKey,
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signatures.toTypedArray(),
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messages.toTypedArray(),
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@@ -152,19 +159,19 @@ actual object Secp256k1InstanceC {
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first: ByteArray,
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second: ByteArray,
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): ByteArray {
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ensureLoaded()
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return nativePrivKeyTweakAdd(first, second) ?: error("Tweak add failed")
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Secp256k1C.ensureLoaded()
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return Secp256k1C.nativePrivKeyTweakAdd(first, second) ?: error("Tweak add failed")
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}
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actual fun pubKeyTweakMulCompact(
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pubKey: ByteArray,
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privateKey: ByteArray,
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): ByteArray {
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ensureLoaded()
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Secp256k1C.ensureLoaded()
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val compressedPub = ByteArray(33)
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compressedPub[0] = 0x02
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pubKey.copyInto(compressedPub, 1, 0, 32)
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val result = nativePubKeyTweakMul(compressedPub, privateKey) ?: error("Tweak mul failed")
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val result = Secp256k1C.nativePubKeyTweakMul(compressedPub, privateKey) ?: error("Tweak mul failed")
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return result.copyOfRange(1, 33)
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}
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@@ -172,7 +179,7 @@ actual object Secp256k1InstanceC {
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xOnlyPub: ByteArray,
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scalar: ByteArray,
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): ByteArray {
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ensureLoaded()
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return nativeEcdhXOnly(xOnlyPub, scalar) ?: error("ECDH failed")
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Secp256k1C.ensureLoaded()
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return Secp256k1C.nativeEcdhXOnly(xOnlyPub, scalar) ?: error("ECDH failed")
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}
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}
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