1 files changed, 37 insertions, 0 deletions
diff --git a/src/librbd/crypto/DataCryptor.h b/src/librbd/crypto/DataCryptor.h
new file mode 100644
index 000000000..ffcc57ce4
--- /dev/null
+++ b/src/librbd/crypto/DataCryptor.h
@@ -0,0 +1,37 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#ifndef CEPH_LIBRBD_CRYPTO_DATA_CRYPTOR_H
+#define CEPH_LIBRBD_CRYPTO_DATA_CRYPTOR_H
+
+#include "include/int_types.h"
+#include "librbd/crypto/Types.h"
+
+namespace librbd {
+namespace crypto {
+
+template <typename T>
+class DataCryptor {
+
+public:
+
+  virtual ~DataCryptor() = default;
+
+  virtual uint32_t get_block_size() const = 0;
+  virtual uint32_t get_iv_size() const = 0;
+  virtual const unsigned char* get_key() const = 0;
+  virtual int get_key_length() const = 0;
+
+  virtual T* get_context(CipherMode mode) = 0;
+  virtual void return_context(T* ctx, CipherMode mode) = 0;
+
+  virtual int init_context(T* ctx, const unsigned char* iv,
+                           uint32_t iv_length) const = 0;
+  virtual int update_context(T* ctx, const unsigned char* in,
+                             unsigned char* out, uint32_t len) const = 0;
+};
+
+} // namespace crypto
+} // namespace librbd
+
+#endif // CEPH_LIBRBD_CRYPTO_DATA_CRYPTOR_H