encrypted payment ids are now 64 bit, instead of 256 bit

Pros:
 - smaller on the blockchain
 - shorter integrated addresses

Cons:
 - less sparseness
 - less ability to embed actual information

The boolean argument to encrypt payment ids is now gone from the
RPC calls, since the decision is made based on the length of the
payment id passed.

1 files changed, 8 insertions, 3 deletions

diff --git a/src/cryptonote_core/cryptonote_basic_impl.h b/src/cryptonote_core/cryptonote_basic_impl.h
index 87d6f1024..5c442d558 100644
--- a/src/cryptonote_core/cryptonote_basic_impl.h
+++ b/src/cryptonote_core/cryptonote_basic_impl.h
@@ -60,7 +60,7 @@ namespace cryptonote {
   {
     uint8_t m_ver;
     account_public_address m_address;
-    crypto::hash payment_id;
+    crypto::hash8 payment_id;
     uint8_t check_sum;
   };
 #pragma pack (pop)
@@ -83,13 +83,13 @@ namespace cryptonote {
   std::string get_account_integrated_address_as_str(
       bool testnet
     , const account_public_address& adr
-    , const crypto::hash& payment_id
+    , const crypto::hash8& payment_id
     );
 
   bool get_account_integrated_address_from_str(
       account_public_address& adr
     , bool& has_payment_id
-    , crypto::hash& payment_id
+    , crypto::hash8& payment_id
     , bool testnet
     , const std::string& str
     );
@@ -110,6 +110,10 @@ template <class T>
 std::ostream &print256(std::ostream &o, const T &v) {
   return o << "<" << epee::string_tools::pod_to_hex(v) << ">";
 }
+template <class T>
+std::ostream &print64(std::ostream &o, const T &v) {
+  return o << "<" << epee::string_tools::pod_to_hex(v) << ">";
+}
 
 bool parse_hash256(const std::string str_hash, crypto::hash& hash);
 
@@ -120,4 +124,5 @@ namespace crypto {
   inline std::ostream &operator <<(std::ostream &o, const crypto::key_image &v) { return print256(o, v); }
   inline std::ostream &operator <<(std::ostream &o, const crypto::signature &v) { return print256(o, v); }
   inline std::ostream &operator <<(std::ostream &o, const crypto::hash &v) { return print256(o, v); }
+  inline std::ostream &operator <<(std::ostream &o, const crypto::hash8 &v) { return print64(o, v); }
 }