Pin code: add some tests

libraries/cryptography/test/build.gradle.kts

@@ -0,0 +1,27 @@
+/*
+ * Copyright (c) 2023 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+plugins {
+    id("io.element.android-library")
+}
+
+android {
+    namespace = "io.element.android.libraries.cryptography.test"
+
+    dependencies {
+        api(projects.libraries.cryptography.api)
+    }
+}

libraries/cryptography/test/src/main/kotlin/io/element/android/libraries/cryptography/test/SimpleSecretKeyProvider.kt

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+/*
+ * Copyright (c) 2023 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package io.element.android.libraries.cryptography.test
+
+import io.element.android.libraries.cryptography.api.AESEncryptionSpecs
+import io.element.android.libraries.cryptography.api.SecretKeyProvider
+import javax.crypto.KeyGenerator
+import javax.crypto.SecretKey
+
+class SimpleSecretKeyProvider : SecretKeyProvider {
+
+    private var secretKeyForAlias = HashMap<String, SecretKey>()
+
+    override fun getOrCreateKey(alias: String): SecretKey {
+        return secretKeyForAlias.getOrPut(alias) {
+            generateKey()
+        }
+    }
+
+    private fun generateKey(): SecretKey {
+        val keyGenerator = KeyGenerator.getInstance(AESEncryptionSpecs.ALGORITHM)
+        keyGenerator.init(AESEncryptionSpecs.KEY_SIZE)
+        return keyGenerator.generateKey()
+    }
+}