Removing direct aes cbc and ctr, to reduce foot shooting incidents, introducing aes256-gcm

multiplatform-crypto-api/src/commonMain/kotlin/com/ionspin/kotlin/crypto/authenticated/Aes256Gcm.kt

@@ -0,0 +1,37 @@
+package com.ionspin.kotlin.crypto.authenticated
+
+/**
+ * Created by Ugljesa Jovanovic
+ * ugljesa.jovanovic@ionspin.com
+ * on 14-Jun-2020
+ */
+interface Aes256GcmStateless {
+    /**
+     * Nonce autogenerated, key autogenerated
+     */
+    fun encrypt(message: UByteArray, additionalData: UByteArray, rawData : UByteArray) : Aes256GcmEncryptionResult
+}
+
+data class Aes256GcmEncryptionResult(val cyphertext : UByteArray, val additionalData: UByteArray, val nonce: UByteArray, val tag: UByteArray) {
+    override fun equals(other: Any?): Boolean {
+        if (this === other) return true
+        if (other == null || this::class != other::class) return false
+
+        other as Aes256GcmEncryptionResult
+
+        if (cyphertext != other.cyphertext) return false
+        if (additionalData != other.additionalData) return false
+        if (nonce != other.nonce) return false
+        if (tag != other.tag) return false
+
+        return true
+    }
+
+    override fun hashCode(): Int {
+        var result = cyphertext.hashCode()
+        result = 31 * result + additionalData.hashCode()
+        result = 31 * result + nonce.hashCode()
+        result = 31 * result + tag.hashCode()
+        return result
+    }
+}

multiplatform-crypto-api/src/commonMain/kotlin/com/ionspin/kotlin/crypto/symmetric/aes/Aes.kt

@@ -1,26 +0,0 @@
-package com.ionspin.kotlin.crypto.symmetric.aes
-
-/**
- * Created by Ugljesa Jovanovic
- * ugljesa.jovanovic@ionspin.com
- * on 13-Jun-2020
- */
-sealed class AesKey(val key: String, val keyLength: Int) {
-    val keyArray: UByteArray = key.chunked(2).map { it.toUByte(16) }.toUByteArray()
-    val numberOf32BitWords = keyLength / 32
-
-    class Aes128Key(key: String) : AesKey(key, 128)
-    class Aes192Key(key: String) : AesKey(key, 192)
-    class Aes256Key(key: String) : AesKey(key, 256)
-
-    init {
-        checkKeyLength(key, keyLength)
-    }
-
-    fun checkKeyLength(key: String, expectedLength: Int) {
-        if ((key.length / 2) != expectedLength / 8) {
-            throw RuntimeException("Invalid key length")
-        }
-    }
-}
-

multiplatform-crypto-api/src/commonMain/kotlin/com/ionspin/kotlin/crypto/symmetric/aes/AesCtr.kt

@@ -1,69 +0,0 @@
-package com.ionspin.kotlin.crypto.symmetric.aes
-
-/**
- * Created by Ugljesa Jovanovic
- * ugljesa.jovanovic@ionspin.com
- * on 13-Jun-2020
- */
-interface SimpleUpdateableAesCtr {
-    fun update(data: UByteArray)
-
-    fun process() : UByteArray
-
-}
-
-interface AdvancedUpdateableAesCtr : SimpleUpdateableAesCtr {
-    fun update(data: UByteArray, counter : UByteArray) : UByteArray
-}
-
-interface SimpleStatelessAesCtr {
-
-    fun encrypt(aesKey: AesKey, data: UByteArray) : EncryptedDataAndInitialCounter
-
-    fun decrypt(aesKey: AesKey, encryptedDataAndInitialCounter: EncryptedDataAndInitialCounter) : UByteArray
-
-}
-
-interface AdvancedStatelessAesCtr : SimpleStatelessAesCtr {
-    fun encrypt(aesKey: AesKey, data: UByteArray, initialCounter: UByteArray) : EncryptedDataAndInitialCounter
-}
-
-data class EncryptedDataAndInitialCounter(val encryptedData : UByteArray, val initialCounter : UByteArray) {
-    override fun equals(other: Any?): Boolean {
-        if (this === other) return true
-        if (other == null || this::class != other::class) return false
-
-        other as EncryptedDataAndInitialCounter
-
-        if (!encryptedData.contentEquals(other.encryptedData)) return false
-        if (!initialCounter.contentEquals(other.initialCounter)) return false
-
-        return true
-    }
-
-    override fun hashCode(): Int {
-        var result = encryptedData.contentHashCode()
-        result = 31 * result + initialCounter.contentHashCode()
-        return result
-    }
-}
-
-data class EncryptedDataAndInitializationVector(val encryptedData : UByteArray, val initializationVector : UByteArray) {
-    override fun equals(other: Any?): Boolean {
-        if (this === other) return true
-        if (other == null || this::class != other::class) return false
-
-        other as EncryptedDataAndInitializationVector
-
-        if (!encryptedData.contentEquals(other.encryptedData)) return false
-        if (!initializationVector.contentEquals(other.initializationVector)) return false
-
-        return true
-    }
-
-    override fun hashCode(): Int {
-        var result = encryptedData.contentHashCode()
-        result = 31 * result + initializationVector.contentHashCode()
-        return result
-    }
-}