Add `KeyPair` and `KeyManager` to manage keys in the app (#1487)

Co-authored-by: Harsh Shandilya <me@msfjarvis.dev>

1 files changed, 19 insertions, 0 deletions

diff --git a/crypto-common/src/main/kotlin/dev/msfjarvis/aps/data/crypto/KeyManager.kt b/crypto-common/src/main/kotlin/dev/msfjarvis/aps/data/crypto/KeyManager.kt
new file mode 100644
index 00000000..b5ba881e
--- /dev/null
+++ b/crypto-common/src/main/kotlin/dev/msfjarvis/aps/data/crypto/KeyManager.kt
@@ -0,0 +1,19 @@
+/*
+ * Copyright © 2014-2021 The Android Password Store Authors. All Rights Reserved.
+ * SPDX-License-Identifier: GPL-3.0-only
+ */
+
+package dev.msfjarvis.aps.data.crypto
+
+import com.github.michaelbull.result.Result
+
+public interface KeyManager<T : KeyPair> {
+
+  public suspend fun addKey(key: T, replace: Boolean = false): Result<T, Throwable>
+  public suspend fun removeKey(key: T): Result<T, Throwable>
+  public suspend fun getKeyById(id: String): Result<T, Throwable>
+  public suspend fun getAllKeys(): Result<List<T>, Throwable>
+
+  /** Given a [fileName], return whether this instance can handle it. */
+  public fun canHandle(fileName: String): Boolean
+}