test.html

<script src="https://cdn.jsdelivr.net/npm/gun/gun.js"></script>
<script src="https://cdn.jsdelivr.net/npm/gun/sea.js"></script>
<script>
    (async () => {
        var pair = await SEA.pair();
        var enc = await SEA.encrypt('hello self', pair);
        var data = await SEA.sign(enc, pair);
        console.log(data);
        var msg = await SEA.verify(data, pair.pub);
        var dec = await SEA.decrypt(msg, pair);
        var proof = await SEA.work(dec, pair);
        var check = await SEA.work('hello self', pair);
        console.log(dec);
        console.log(proof === check);
        // now let's share private data with someone:
        var alice = await SEA.pair();
        var bob = await SEA.pair();
        var enc = await SEA.encrypt('shared data', await SEA.secret(bob.epub, alice));
        await SEA.decrypt(enc, await SEA.secret(alice.epub, bob));
        // `.secret` is Elliptic-curve Diffie–Hellman
        // Bob allows Alice to write to part of his graph, he creates a certificate for Alice
        var certificate = await SEA.certify(alice.pub, ["^AliceOnly.*"], bob)
        // Alice logs in 
        const gun = Gun();
        await gun.user().auth(alice);
        // and uses the certificate
        await gun.get('~'+bob.pub).get('AliceOnly').get('do-not-tell-anyone').put(enc, null, {opt: {cert: certificate}})
        await gun.get('~'+bob.pub).get('AliceOnly').get('do-not-tell-anyone').once(console.log) // return 'enc'
    })();
</script>