feat: add base code for crypto

lib/infrastructure/src/androidMain/kotlin/co/kr/parkjonghun/composemultiplatformtestairfield/infrastructure/key/KeyPair.kt

@@ -0,0 +1,3 @@
+package co.kr.parkjonghun.composemultiplatformtestairfield.infrastructure.key
+
+actual typealias KeyPair = java.security.KeyPair

lib/infrastructure/src/androidMain/kotlin/co/kr/parkjonghun/composemultiplatformtestairfield/infrastructure/key/PlatformBinaryData.kt

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+package co.kr.parkjonghun.composemultiplatformtestairfield.infrastructure.key
+
+actual typealias PlatformBinaryData = kotlin.ByteArray

lib/infrastructure/src/commonMain/kotlin/co/kr/parkjonghun/composemultiplatformtestairfield/infrastructure/key/Cryptor.kt

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+package co.kr.parkjonghun.composemultiplatformtestairfield.infrastructure.key
+
+interface Cryptor {
+    fun encrypt()
+    fun decrypt()
+}

lib/infrastructure/src/commonMain/kotlin/co/kr/parkjonghun/composemultiplatformtestairfield/infrastructure/key/DigitalSignature.kt

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+package co.kr.parkjonghun.composemultiplatformtestairfield.infrastructure.key
+
+interface DigitalSignature {
+    fun sign(alias: String, data: ByteArray): PlatformBinaryData
+
+    // When receiving data, it is always received as something like Ktor, so this is sufficient as [ByteArray].
+    fun verify(alias: String, data: ByteArray): Boolean
+}

lib/infrastructure/src/commonMain/kotlin/co/kr/parkjonghun/composemultiplatformtestairfield/infrastructure/key/KeyPair.kt

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+package co.kr.parkjonghun.composemultiplatformtestairfield.infrastructure.key
+
+// TODO: Always catch up and migrate if it can be implemented only with Kotlin libraries.
+expect class KeyPair

lib/infrastructure/src/commonMain/kotlin/co/kr/parkjonghun/composemultiplatformtestairfield/infrastructure/key/KeyPairHandler.kt

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+package co.kr.parkjonghun.composemultiplatformtestairfield.infrastructure.key
+
+interface KeyPairHandler {
+    fun generateKeyPair(alias: String): KeyPair
+    fun obtainKeyPair(alias: String): KeyPair?
+    fun deleteKeyPair(alias: String): Boolean
+}

lib/infrastructure/src/commonMain/kotlin/co/kr/parkjonghun/composemultiplatformtestairfield/infrastructure/key/PlatformBinaryData.kt

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+package co.kr.parkjonghun.composemultiplatformtestairfield.infrastructure.key
+
+// TODO: Always catch up and migrate if it can be implemented only with Kotlin libraries.
+expect class PlatformBinaryData

lib/infrastructure/src/iosMain/kotlin/co/kr/parkjonghun/composemultiplatformtestairfield/infrastructure/key/KeyPair.kt

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+package co.kr.parkjonghun.composemultiplatformtestairfield.infrastructure.key
+
+import kotlinx.cinterop.ExperimentalForeignApi
+
+actual typealias KeyPair = IosKeyPair
+
+@OptIn(ExperimentalForeignApi::class)
+class IosKeyPair(val secKeyRef: platform.Security.SecKeyRef)

lib/infrastructure/src/iosMain/kotlin/co/kr/parkjonghun/composemultiplatformtestairfield/infrastructure/key/PlatformBinaryData.kt

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+package co.kr.parkjonghun.composemultiplatformtestairfield.infrastructure.key
+
+actual typealias PlatformBinaryData = platform.Foundation.NSData