Add post-quantum wallet support and PQ transaction signing

app/src/main/cpp/pq/sphincsplus/hash.h

@@ -0,0 +1,27 @@
+#ifndef SPX_HASH_H
+#define SPX_HASH_H
+
+#include <stdint.h>
+#include "context.h"
+#include "params.h"
+
+#define initialize_hash_function SPX_NAMESPACE(initialize_hash_function)
+void initialize_hash_function(spx_ctx *ctx);
+
+#define prf_addr SPX_NAMESPACE(prf_addr)
+void prf_addr(unsigned char *out, const spx_ctx *ctx,
+              const uint32_t addr[8]);
+
+#define gen_message_random SPX_NAMESPACE(gen_message_random)
+void gen_message_random(unsigned char *R, const unsigned char *sk_prf,
+                        const unsigned char *optrand,
+                        const unsigned char *m, unsigned long long mlen,
+                        const spx_ctx *ctx);
+
+#define hash_message SPX_NAMESPACE(hash_message)
+void hash_message(unsigned char *digest, uint64_t *tree, uint32_t *leaf_idx,
+                  const unsigned char *R, const unsigned char *pk,
+                  const unsigned char *m, unsigned long long mlen,
+                  const spx_ctx *ctx);
+
+#endif