Change memo field size and relocate `ciphertexts` field of JoinSplit description.

src/gtest/test_noteencryption.cpp

@@ -29,8 +29,8 @@ TEST(noteencryption, api)
         ASSERT_TRUE(b.get_epk() != c.get_epk());
     }
 
-    boost::array<unsigned char, 201> message;
-    for (unsigned char i = 0; i < 201; i++) {
+    boost::array<unsigned char, ZC_NOTEPLAINTEXT_SIZE> message;
+    for (size_t i = 0; i < ZC_NOTEPLAINTEXT_SIZE; i++) {
         // Fill the message with dummy data
         message[i] = (unsigned char) i;
     }
@@ -195,4 +195,4 @@ TEST(noteencryption, prf_rho)
 TEST(noteencryption, uint252)
 {
     ASSERT_THROW(uint252(uint256S("f6da8716682d600f74fc16bd0187faad6a26b4aa4c24d5c055b216d94516847e")), std::domain_error);
-}
+}

src/primitives/transaction.h

@@ -92,10 +92,10 @@ public:
         READWRITE(nullifiers);
         READWRITE(commitments);
         READWRITE(ephemeralKey);
-        READWRITE(ciphertexts);
         READWRITE(randomSeed);
         READWRITE(macs);
         READWRITE(proof);
+        READWRITE(ciphertexts);
     }
 
     friend bool operator==(const JSDescription& a, const JSDescription& b)

src/zcash/NoteEncryption.cpp

@@ -173,7 +173,7 @@ uint252 random_uint252()
     return uint252(rand);
 }
 
-template class NoteEncryption<ZC_NOTEPLAINTEXT_LEADING + ZC_V_SIZE + ZC_RHO_SIZE + ZC_R_SIZE + ZC_MEMO_SIZE>;
-template class NoteDecryption<ZC_NOTEPLAINTEXT_LEADING + ZC_V_SIZE + ZC_RHO_SIZE + ZC_R_SIZE + ZC_MEMO_SIZE>;
+template class NoteEncryption<ZC_NOTEPLAINTEXT_SIZE>;
+template class NoteDecryption<ZC_NOTEPLAINTEXT_SIZE>;
 
-}
+}

src/zcash/NoteEncryption.hpp

@@ -75,7 +75,7 @@ uint252 random_uint252();
 
 }
 
-typedef libzcash::NoteEncryption<ZC_NOTEPLAINTEXT_LEADING + ZC_V_SIZE + ZC_RHO_SIZE + ZC_R_SIZE + ZC_MEMO_SIZE> ZCNoteEncryption;
-typedef libzcash::NoteDecryption<ZC_NOTEPLAINTEXT_LEADING + ZC_V_SIZE + ZC_RHO_SIZE + ZC_R_SIZE + ZC_MEMO_SIZE> ZCNoteDecryption;
+typedef libzcash::NoteEncryption<ZC_NOTEPLAINTEXT_SIZE> ZCNoteEncryption;
+typedef libzcash::NoteDecryption<ZC_NOTEPLAINTEXT_SIZE> ZCNoteDecryption;
 
 #endif /* ZC_NOTE_ENCRYPTION_H_ */

src/zcash/Zcash.h

@@ -10,7 +10,9 @@
 #define ZC_V_SIZE 8
 #define ZC_RHO_SIZE 32
 #define ZC_R_SIZE 32
-#define ZC_MEMO_SIZE 128
+#define ZC_MEMO_SIZE 512
+
+#define ZC_NOTEPLAINTEXT_SIZE ZC_NOTEPLAINTEXT_LEADING + ZC_V_SIZE + ZC_RHO_SIZE + ZC_R_SIZE + ZC_MEMO_SIZE
 
 #define ZKSNARK_PROOF_SIZE 584