crypto, rpc: poc mnemonics

src/CMakeLists.txt

@@ -127,6 +127,7 @@ add_library(gridcoin_util STATIC
     gridcoin/cpid.cpp
     gridcoin/gridcoin.cpp
     gridcoin/mrc.cpp
+    gridcoin/mnemonics.cpp
     gridcoin/project.cpp
     gridcoin/protocol.cpp
     gridcoin/quorum.cpp

src/Makefile.am

@@ -119,6 +119,7 @@ GRIDCOIN_CORE_H = \
     gridcoin/cpid.h \
     gridcoin/gridcoin.h \
     gridcoin/magnitude.h \
+    gridcoin/mnemonics.h \
     gridcoin/mrc.h \
     gridcoin/project.h \
     gridcoin/protocol.h \
@@ -250,6 +251,7 @@ GRIDCOIN_CORE_CPP = addrdb.cpp \
     gridcoin/contract/registry.cpp \
     gridcoin/cpid.cpp \
     gridcoin/gridcoin.cpp \
+    gridcoin/mnemonics.cpp \
     gridcoin/mrc.cpp \
     gridcoin/project.cpp \
     gridcoin/protocol.cpp \
@@ -367,6 +369,8 @@ crypto_libgridcoin_crypto_base_a_SOURCES = \
     crypto/aes.h \
     crypto/chacha20.h \
     crypto/chacha20.cpp \
+    crypto/chacha20poly1305.h \
+    crypto/chacha20poly1305.cpp \
     crypto/common.h \
     crypto/hmac_sha256.cpp \
     crypto/hmac_sha256.h \

src/arith_uint256.cpp

@@ -276,3 +276,7 @@ arith_uint320::arith_uint320(const uint256& b) {
     std::memcpy(pn, b.data(), b.size());
 }
 
+// Explicit instantiation for base_uint<352> for mnemonic parsing.
+template base_uint<352>& base_uint<352>::operator<<=(unsigned int);
+template base_uint<352>& base_uint<352>::operator>>=(unsigned int);
+

src/arith_uint256.h

@@ -229,6 +229,10 @@ class base_uint
     void SetHex(const std::string& str);
     std::string ToString() const;
 
+    unsigned char* data() {
+        return reinterpret_cast<unsigned char*>(pn);
+    }
+
     unsigned int size() const
     {
         return sizeof(pn);

src/crypto/CMakeLists.txt

@@ -2,6 +2,7 @@ set(LIBGRIDCOIN_CRYPTO gridcoin_crypto_base)
 add_library(gridcoin_crypto_base STATIC
     aes.cpp
     chacha20.cpp
+    chacha20poly1305.cpp
     hmac_sha256.cpp
     hmac_sha512.cpp
     poly1305.cpp