1 files changed, 38 insertions, 0 deletions
diff --git a/src/include/anastasis_crypto_lib.h b/src/include/anastasis_crypto_lib.h
index c28b83a..da60630 100644
--- a/src/include/anastasis_crypto_lib.h
+++ b/src/include/anastasis_crypto_lib.h
@@ -396,6 +396,44 @@ ANASTASIS_CRYPTO_recovery_document_decrypt (
 
 
 /**
+ * Encrypt recovery document meta data.
+ *
+ * @param id Hashed User input, used for the generation of the encryption key
+ * @param meta_data contains the recovery document meta data
+ * @param meta_data_size number of bytes in @a meta_data
+ * @param[out] enc_meta_data set to the encrypted meta data
+ * @param[out] enc_meta_data_size size of the result
+ */
+void
+ANASTASIS_CRYPTO_recovery_metadata_encrypt (
+  const struct ANASTASIS_CRYPTO_UserIdentifierP *id,
+  const void *meta_data,
+  size_t meta_data_size,
+  void **enc_meta_data,
+  size_t *enc_meta_data_size);
+
+
+/**
+ * Decrypts the recovery meta data.
+ *
+ * @param id Hashed User input, used for the generation of the decryption key
+ * @param enc_meta_data encrypted meta data
+ * @param enc_meta_data_size number of bytes in @a enc_meta_data
+ * @param[out] meta_data decrypted meta data
+ * @param[out] meta_data_size size of the result in @a meta_data
+ * @return #GNUNET_OK on success, #GNUNET_NO if the authentication tag
+ *          was wrong
+ */
+enum GNUNET_GenericReturnValue
+ANASTASIS_CRYPTO_recovery_metadata_decrypt (
+  const struct ANASTASIS_CRYPTO_UserIdentifierP *id,
+  const void *enc_meta_data,
+  size_t enc_meta_data_size,
+  void **meta_data,
+  size_t *meta_data_size);
+
+
+/**
  * Encrypts a keyshare with a key generated with the user identification as entropy and the salt "eks".
  *
  * @param key_share the key share which is afterwards encrypted