From 93d4abfd2acdc72913ca2063d2f8644407d14330 Mon Sep 17 00:00:00 2001
From: Ravin Perera <33562092+ravinsp@users.noreply.github.com>
Date: Wed, 30 Oct 2019 18:35:08 +0530
Subject: [PATCH] Updated hashing algorithm.

---
 src/crypto.cpp  | 10 +++++-----
 src/crypto.hpp  |  2 +-
 src/p2p/p2p.cpp |  2 +-
 src/util.hpp    |  2 +-
 4 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/src/crypto.cpp b/src/crypto.cpp
index cab43aef..4aae3965 100644
--- a/src/crypto.cpp
+++ b/src/crypto.cpp
@@ -133,15 +133,15 @@ int verify_hex(std::string_view msg, std::string_view sighex, std::string_view p
 }
 
 /**
- * Generate SHA 512 hash for message prepend with prefix before hashing.
+ * Generate hash for message prepend with prefix before hashing.
  * 
  * @param data String to hash.
- * @return SHA 512 hash.
+ * @return The hash of the given string.
  */
-std::string sha_512_hash(std::string_view data)
+std::string get_hash(std::string_view data)
 {
-    unsigned char hashchars[crypto_hash_sha512_BYTES];
-    crypto_hash_sha512(hashchars, (unsigned char *)data.data(), data.length());
+    unsigned char hashchars[crypto_generichash_BYTES];
+    crypto_generichash(hashchars, sizeof hashchars, (unsigned char *)data.data(), data.length(), NULL, 0);
     return std::string(reinterpret_cast<char *>(hashchars), crypto_hash_sha512_BYTES);
 }
 
diff --git a/src/crypto.hpp b/src/crypto.hpp
index c4ba370f..634590d1 100644
--- a/src/crypto.hpp
+++ b/src/crypto.hpp
@@ -29,7 +29,7 @@ int verify(std::string_view msg, std::string_view sig, std::string_view pubkey);
 
 int verify_hex(std::string_view msg, std::string_view sighex, std::string_view pubkeyhex);
 
-std::string sha_512_hash(std::string_view data);
+std::string get_hash(std::string_view data);
 
 } // namespace crypto
 
diff --git a/src/p2p/p2p.cpp b/src/p2p/p2p.cpp
index 425ee5a2..87dc007d 100644
--- a/src/p2p/p2p.cpp
+++ b/src/p2p/p2p.cpp
@@ -123,7 +123,7 @@ void peer_connection_watchdog()
 bool is_message_duplicate(std::string_view message)
 {
     // Get message hash and see whether message is already recieved -> abandon if duplicate.
-    std::string hash = crypto::sha_512_hash(message);
+    std::string hash = crypto::get_hash(message);
 
     auto itr = recent_peermsg_hashes.find(hash);
     if (itr == recent_peermsg_hashes.end()) // Not found
diff --git a/src/util.hpp b/src/util.hpp
index 8b606eb7..bb5f41a5 100644
--- a/src/util.hpp
+++ b/src/util.hpp
@@ -80,7 +80,7 @@ struct hash_buffer
         stringtohash.append(buffer);
         stringtohash.append(timestr);
 
-        hash = crypto::sha_512_hash(stringtohash);
+        hash = crypto::get_hash(stringtohash);
     }
 };