@futuretense/secret-memo

Create secret transaction memos using public-key encryption.

Uses @futuretense/stellar-box in un-authenticated mode (since the transaction is signed anyway), with the sequence number of the transaction source account ("the sender") as the nonce.

All memo types are supported.

Installation

npm install @futuretense/secret-memo

Usage

Creating an encrypted memo

import { encodeMemo } from '@futuretense/secret-memo';

...

const memo = Memo.id('1543624365');

const account = await server.loadAccount(user1);
const secret = await encodeMemo(account.sequenceNumber(), keys1, user2, memo);
const builder = new TransactionBuilder(account, {
    networkPassphrase: Networks.PUBLIC,
    fee: 1000,
});

...

builder.setTimeout(0);
builder.addMemo(secret);
const tx = builder.build();

const xdr = tx.toXDR();

Decoding a memo from a transaction

import { decodeTransactionMemo } from '@futuretense/secret-memo';

const tx = new Transaction(xdr, Networks.PUBLIC);
const memo = await decodeTransactionMemo(tx, keys2);