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The Lightspark shared crypto library.

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package com.lightspark.sdk.crypto

import com.lightspark.sdk.crypto.internal.toByteArray

object Secp256k1 {
    fun signEcdsa(message: ByteArray, privateKey: ByteArray): ByteArray {
        return com.lightspark.sdk.crypto.internal.signEcdsa(
            message.toUByteArray().toList(), privateKey.toUByteArray().toList(),
        ).toByteArray()
    }

    fun verifyEcdsa(message: ByteArray, signature: ByteArray, publicKey: ByteArray): Boolean {
        return com.lightspark.sdk.crypto.internal.verifyEcdsa(
            message.toUByteArray().toList(), signature.toUByteArray().toList(),
            publicKey.toUByteArray().toList(),
        )
    }

    fun encryptEcies(message: ByteArray, publicKey: ByteArray): ByteArray {
        return com.lightspark.sdk.crypto.internal.encryptEcies(
            message.toUByteArray().toList(), publicKey.toUByteArray().toList(),
        ).toByteArray()
    }

    fun decryptEcies(message: ByteArray, privateKey: ByteArray): ByteArray {
        return com.lightspark.sdk.crypto.internal.decryptEcies(
            message.toUByteArray().toList(), privateKey.toUByteArray().toList(),
        ).toByteArray()
    }

    fun generateKeyPair(): KeyPair {
        val keyPair = com.lightspark.sdk.crypto.internal.generateKeypair()
        return KeyPair(keyPair.getPublicKey().toByteArray(), keyPair.getPrivateKey().toByteArray())
    }
}

data class KeyPair(
    val publicKey: ByteArray,
    val privateKey: ByteArray,
) {
    override fun equals(other: Any?): Boolean {
        if (this === other) return true
        if (javaClass != other?.javaClass) return false

        other as KeyPair

        if (!publicKey.contentEquals(other.publicKey)) return false
        if (!privateKey.contentEquals(other.privateKey)) return false

        return true
    }

    override fun hashCode(): Int {
        var result = publicKey.contentHashCode()
        result = 31 * result + privateKey.contentHashCode()
        return result
    }
}