Add post-quantum wallet support and PQ transaction signing

app/src/main/cpp/CMakeLists.txt

@@ -0,0 +1,57 @@
+cmake_minimum_required(VERSION 3.22.1)
+
+project(vextapq LANGUAGES C CXX)
+
+add_library(
+    vextapq
+    SHARED
+
+    vexta_pq_jni.cpp
+    vexta_pq_randombytes.cpp
+    pq/pq.cpp
+
+    pq/mldsa65/fips202.c
+    pq/mldsa65/ntt.c
+    pq/mldsa65/packing.c
+    pq/mldsa65/poly.c
+    pq/mldsa65/polyvec.c
+    pq/mldsa65/reduce.c
+    pq/mldsa65/rounding.c
+    pq/mldsa65/sign.c
+    pq/mldsa65/symmetric-shake.c
+
+    pq/sphincsplus/address.c
+    pq/sphincsplus/fips202.c
+    pq/sphincsplus/fors.c
+    pq/sphincsplus/hash_sha2.c
+    pq/sphincsplus/merkle.c
+    pq/sphincsplus/sha2.c
+    pq/sphincsplus/sign.c
+    pq/sphincsplus/thash_sha2_simple.c
+    pq/sphincsplus/utils.c
+    pq/sphincsplus/utilsx1.c
+    pq/sphincsplus/wots.c
+    pq/sphincsplus/wotsx1.c
+)
+
+target_include_directories(
+    vextapq
+    PRIVATE
+    ${CMAKE_CURRENT_SOURCE_DIR}/pq
+    ${CMAKE_CURRENT_SOURCE_DIR}/pq/mldsa65
+    ${CMAKE_CURRENT_SOURCE_DIR}/pq/sphincsplus
+)
+
+target_compile_definitions(
+    vextapq
+    PRIVATE
+    DILITHIUM_MODE=3
+    PARAMS=sphincs-sha2-128s
+)
+
+find_library(log-lib log)
+
+target_link_libraries(
+    vextapq
+    ${log-lib}
+)