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#ifndef ZC_NOTE_H_
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#define ZC_NOTE_H_
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#include "uint256.h"
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#include "Zcash.h"
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#include "Address.hpp"
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#include "NoteEncryption.hpp"
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#include <array>
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#include <boost/optional.hpp>
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namespace libzcash {
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class BaseNote {
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protected:
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uint64_t value_ = 0;
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public:
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BaseNote() {}
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BaseNote(uint64_t value) : value_(value) {};
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virtual ~BaseNote() {};
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inline uint64_t value() const { return value_; };
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};
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class SproutNote : public BaseNote {
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public:
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uint256 a_pk;
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uint256 rho;
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uint256 r;
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SproutNote(uint256 a_pk, uint64_t value, uint256 rho, uint256 r)
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: BaseNote(value), a_pk(a_pk), rho(rho), r(r) {}
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SproutNote();
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virtual ~SproutNote() {};
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uint256 cm() const;
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uint256 nullifier(const SproutSpendingKey& a_sk) const;
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};
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class SaplingNote : public BaseNote {
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public:
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diversifier_t d;
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uint256 pk_d;
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uint256 r;
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SaplingNote(diversifier_t d, uint256 pk_d, uint64_t value, uint256 r)
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: BaseNote(value), d(d), pk_d(pk_d), r(r) {}
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SaplingNote() {};
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SaplingNote(const SaplingPaymentAddress &address, uint64_t value);
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virtual ~SaplingNote() {};
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boost::optional<uint256> cm() const;
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boost::optional<uint256> nullifier(const SaplingSpendingKey &sk, const uint64_t position) const;
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};
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class BaseNotePlaintext {
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protected:
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uint64_t value_ = 0;
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std::array<unsigned char, ZC_MEMO_SIZE> memo_;
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public:
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BaseNotePlaintext() {}
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BaseNotePlaintext(const BaseNote& note, std::array<unsigned char, ZC_MEMO_SIZE> memo)
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: value_(note.value()), memo_(memo) {}
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virtual ~BaseNotePlaintext() {}
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inline uint64_t value() const { return value_; }
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inline const std::array<unsigned char, ZC_MEMO_SIZE> & memo() const { return memo_; }
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};
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class SproutNotePlaintext : public BaseNotePlaintext {
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public:
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uint256 rho;
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uint256 r;
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SproutNotePlaintext() {}
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SproutNotePlaintext(const SproutNote& note, std::array<unsigned char, ZC_MEMO_SIZE> memo);
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SproutNote note(const SproutPaymentAddress& addr) const;
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virtual ~SproutNotePlaintext() {}
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ADD_SERIALIZE_METHODS;
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template <typename Stream, typename Operation>
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inline void SerializationOp(Stream& s, Operation ser_action) {
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unsigned char leadingByte = 0x00;
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READWRITE(leadingByte);
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if (leadingByte != 0x00) {
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throw std::ios_base::failure("lead byte of SproutNotePlaintext is not recognized");
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}
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READWRITE(value_);
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READWRITE(rho);
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READWRITE(r);
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READWRITE(memo_);
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}
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static SproutNotePlaintext decrypt(const ZCNoteDecryption& decryptor,
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const ZCNoteDecryption::Ciphertext& ciphertext,
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const uint256& ephemeralKey,
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const uint256& h_sig,
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unsigned char nonce
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);
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ZCNoteEncryption::Ciphertext encrypt(ZCNoteEncryption& encryptor,
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const uint256& pk_enc
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) const;
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};
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}
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#endif // ZC_NOTE_H_
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