1 files changed, 25 insertions, 0 deletions
diff --git a/pg/src/main/java/org/spongycastle/openpgp/operator/PGPDataDecryptorFactory.java b/pg/src/main/java/org/spongycastle/openpgp/operator/PGPDataDecryptorFactory.java
new file mode 100644
index 00000000..7223d039
--- /dev/null
+++ b/pg/src/main/java/org/spongycastle/openpgp/operator/PGPDataDecryptorFactory.java
@@ -0,0 +1,25 @@
+package org.spongycastle.openpgp.operator;
+
+import org.spongycastle.bcpg.SymmetricKeyAlgorithmTags;
+import org.spongycastle.openpgp.PGPException;
+
+/**
+ * Base interface of factories for {@link PGPDataDecryptor}.
+ */
+public interface PGPDataDecryptorFactory
+{
+    /**
+     * Constructs a data decryptor.
+     *
+     * @param withIntegrityPacket <code>true</code> if the packet to be decrypted has integrity
+     *            checking enabled.
+     * @param encAlgorithm the identifier of the {@link SymmetricKeyAlgorithmTags encryption
+     *            algorithm} to decrypt with.
+     * @param key the bytes of the key for the cipher.
+     * @return a data decryptor that can decrypt (and verify) streams of encrypted data.
+     * @throws PGPException if an error occurs initialising the decryption and integrity checking
+     *             functions.
+     */
+    public PGPDataDecryptor createDataDecryptor(boolean withIntegrityPacket, int encAlgorithm, byte[] key)
+        throws PGPException;
+}