NoteEncryption implementation and integration, removal of ECIES and crypto++ dependencies.

src/zcash/prf.h

@@ -0,0 +1,17 @@
+/*
+Zcash uses SHA256Compress as a PRF for various components
+within the zkSNARK circuit.
+*/
+
+#ifndef _PRF_H_
+#define _PRF_H_
+
+#include "uint256.h"
+
+uint256 PRF_addr_a_pk(const uint256& a_sk);
+uint256 PRF_addr_sk_enc(const uint256& a_sk);
+uint256 PRF_nf(const uint256& a_sk, const uint256& rho);
+uint256 PRF_pk(const uint256& a_sk, size_t i0, const uint256& h_sig);
+uint256 PRF_rho(const uint256& phi, size_t i0, const uint256& h_sig);
+
+#endif // _PRF_H_