Add initial implementation of Gopenpgp-backed PGP (#1441)

1 files changed, 25 insertions, 0 deletions

diff --git a/crypto-common/src/main/kotlin/dev/msfjarvis/aps/data/crypto/CryptoHandler.kt b/crypto-common/src/main/kotlin/dev/msfjarvis/aps/data/crypto/CryptoHandler.kt
new file mode 100644
index 00000000..453613a4
--- /dev/null
+++ b/crypto-common/src/main/kotlin/dev/msfjarvis/aps/data/crypto/CryptoHandler.kt
@@ -0,0 +1,25 @@
+/*
+ * Copyright © 2014-2021 The Android Password Store Authors. All Rights Reserved.
+ * SPDX-License-Identifier: GPL-3.0-only
+ */
+
+package dev.msfjarvis.aps.data.crypto
+
+/** Generic interface to implement cryptographic operations on top of. */
+public interface CryptoHandler {
+
+  /**
+   * Decrypt the given [ciphertext] using a [privateKey] and [passphrase], returning a [ByteArray]
+   * corresponding to the decrypted plaintext.
+   */
+  public fun decrypt(privateKey: String, passphrase: ByteArray, ciphertext: ByteArray): ByteArray
+
+  /**
+   * Encrypt the given [plaintext] to the provided [publicKey], returning the encrypted ciphertext
+   * as a [ByteArray]
+   */
+  public fun encrypt(publicKey: String, plaintext: ByteArray): ByteArray
+
+  /** Given a [fileName], return whether this instance can handle it. */
+  public fun canHandle(fileName: String): Boolean
+}