1 files changed, 17 insertions, 11 deletions

diff --git a/src/include/gnunet_crypto_lib.h b/src/include/gnunet_crypto_lib.h
index 8002b7710..43fd32a58 100644
--- a/src/include/gnunet_crypto_lib.h
+++ b/src/include/gnunet_crypto_lib.h
@@ -52,9 +52,24 @@ extern "C"
 #endif
 
 /**
- * @brief A 512-bit hashcode
+ * @brief A 512-bit hashcode.  These are the default length for GNUnet, using SHA-512.
  */
-struct GNUNET_HashCode;
+struct GNUNET_HashCode
+{
+  uint32_t bits[512 / 8 / sizeof (uint32_t)];   /* = 16 */
+};
+
+
+
+/**
+ * @brief A 256-bit hashcode.  Used under special conditions, like when space
+ * is critical and security is not impacted by it.
+ */
+struct GNUNET_ShortHashCode
+{
+  uint32_t bits[256 / 8 / sizeof (uint32_t)];   /* = 8 */
+};
+
 
 /**
  * The identity of the host (wraps the signing key of the peer).
@@ -66,15 +81,6 @@ struct GNUNET_PeerIdentity;
 
 
 /**
- * @brief A 512-bit hashcode
- */
-struct GNUNET_HashCode
-{
-  uint32_t bits[512 / 8 / sizeof (uint32_t)];   /* = 16 */
-};
-
-
-/**
  * Maximum length of an ECC signature.
  * Note: round up to multiple of 8 minus 2 for alignment.
  */