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This code is hacky in the extreme, but it appears to contain a fairly complete

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implementation of knaccc's "return address scheme" (for more information on this,
please see https://github.com/monero-project/research-lab/issues/53).

Fulmo's PROTOCOL_TX construct relies on a variation of knaccc's design to be
able to make return payments to individuals.

This code is not commercial-grade - it isn't even safe for alpha testing yet,
but it is operational under at least some circumstances, and the math is correct.

Caveat emptor.
This commit is contained in:
Some Random Crypto Guy
2023-12-14 20:17:36 +00:00
parent f30c8be9c6
commit 8bf55dbfef
3 changed files with 140 additions and 7 deletions
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src/cryptonote_basic/cryptonote_format_utils.h
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@@ -107,6 +107,7 @@ namespace cryptonote
uint64_t get_tx_fee(const transaction& tx);
bool generate_key_image_helper(const account_keys& ack, const std::unordered_map<crypto::public_key, subaddress_index>& subaddresses, const crypto::public_key& out_key, const crypto::public_key& tx_public_key, const std::vector<crypto::public_key>& additional_tx_public_keys, size_t real_output_index, const crypto::hash& uniqueness, keypair& in_ephemeral, crypto::key_image& ki, hw::device &hwdev);
bool generate_key_image_helper_precomp(const account_keys& ack, const crypto::public_key& out_key, const crypto::key_derivation& recv_derivation, size_t real_output_index, const crypto::hash& uniqueness, const subaddress_index& received_index, keypair& in_ephemeral, crypto::key_image& ki, hw::device &hwdev);
bool generate_key_image_helper_precomp(const account_keys& ack, const crypto::public_key& out_key, const crypto::key_derivation& recv_derivation, size_t real_output_index, const crypto::hash& uniqueness, const subaddress_index& received_index, keypair& in_ephemeral, crypto::key_image& ki, hw::device &hwdev, const cryptonote::transaction_type& tx_type, const crypto::public_key& pk_change_tx = crypto::null_pkey);
void get_blob_hash(const blobdata& blob, crypto::hash& res);
void get_blob_hash(const blobdata_ref& blob, crypto::hash& res);
crypto::hash get_blob_hash(const blobdata& blob);