nats.docs/_examples/connect_nkey.html

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	<pre id="connect_nkey_go_content"><a class="toolbar-icons pull-right" target="_blank" href="https://github.com/nats-io/go-nats-examples/blob/master/api-examples/connect_nkey/main.go#L10-23"><i class="mdi mdi-github-circle" title="View on GitHub"></i></a><a class="toolbar-icons pull-right"><i class="mdi mdi-content-copy js-copy" title="Copy to Clipboard"></i></a><span class="copy-msg pull-right"></span><code class="language-go">opt, err := nats.NkeyOptionFromSeed(&#34;seed.txt&#34;)
if err != nil {
	log.Fatal(err)
}
nc, err := nats.Connect(&#34;localhost&#34;, opt)
if err != nil {
	log.Fatal(err)
}
defer nc.Close()

// Do something with the connection

</code></pre>
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	<pre id="connect_nkey_java_content"><a class="toolbar-icons pull-right" target="_blank" href="https://github.com/nats-io/java-nats-examples/blob/master/src/main/java/io/nats/examples/ConnectNKey.java#L16-47"><i class="mdi mdi-github-circle" title="View on GitHub"></i></a><a class="toolbar-icons pull-right"><i class="mdi mdi-content-copy js-copy" title="Copy to Clipboard"></i></a><span class="copy-msg pull-right"></span><code class="language-java">NKey theNKey = NKey.createUser(null); // really should load from somewhere
Options options = new Options.Builder().
            server(&#34;nats://localhost:4222&#34;).
            authHandler(new AuthHandler(){
                public char[] getID() {
                    try {
                        return theNKey.getPublicKey();
                    } catch (GeneralSecurityException|IOException|NullPointerException ex) {
                        return null;
                    }
                }

                public byte[] sign(byte[] nonce) {
                    try {
                        return theNKey.sign(nonce);
                    } catch (GeneralSecurityException|IOException|NullPointerException ex) {
                        return null;
                    }
                }

                public char[] getJWT() {
                    return null;
                }
            }).
            build();
Connection nc = Nats.connect(options);

// Do something with the connection

nc.close();
</code></pre>
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	<pre id="connect_nkey_js_content"><a class="toolbar-icons pull-right" target="_blank" href="https://github.com/nats-io/node-nats-examples/blob/master/src/auth_examples.js#L119-131"><i class="mdi mdi-github-circle" title="View on GitHub"></i></a><a class="toolbar-icons pull-right"><i class="mdi mdi-content-copy js-copy" title="Copy to Clipboard"></i></a><span class="copy-msg pull-right"></span><code class="language-javascript">// seed should be stored in a file and treated like a secret
const seed = &#39;SUAEL6GG2L2HIF7DUGZJGMRUFKXELGGYFMHF76UO2AYBG3K4YLWR3FKC2Q&#39;;

let nc = NATS.connect({
    url: server.nats,
    nkey: &#39;UD6OU4D3CIOGIDZVL4ANXU3NWXOW5DCDE2YPZDBHPBXCVKHSODUA4FKI&#39;,
    sigCB: function (nonce) {
        const sk = nkeys.fromSeed(Buffer.from(seed));
        return sk.sign(nonce);
    }
});
</code></pre>
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	<pre id="connect_nkey_py_content"><a class="toolbar-icons pull-right" target="_blank" href="https://github.com/nats-io/asyncio-nats-examples/blob/master/connect_nkey.py#L5-20"><i class="mdi mdi-github-circle" title="View on GitHub"></i></a><a class="toolbar-icons pull-right"><i class="mdi mdi-content-copy js-copy" title="Copy to Clipboard"></i></a><span class="copy-msg pull-right"></span><code class="language-python">nc = NATS()

async def error_cb(e):
    print(&#34;Error:&#34;, e)

await nc.connect(&#34;nats://localhost:4222&#34;,
                 nkeys_seed=&#34;./path/to/nkeys/user.nk&#34;,
                 error_cb=error_cb,
                 )

# Do something with the connection

await nc.close()

</code></pre>
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	<pre id="connect_nkey_ts_content"><a class="toolbar-icons pull-right" target="_blank" href="https://github.com/nats-io/ts-nats-examples/blob/master/src/auth_examples.ts#L89-101"><i class="mdi mdi-github-circle" title="View on GitHub"></i></a><a class="toolbar-icons pull-right"><i class="mdi mdi-content-copy js-copy" title="Copy to Clipboard"></i></a><span class="copy-msg pull-right"></span><code class="language-javascript">// seed should be stored in a file and treated like a secret
const seed = &#39;SUAEL6GG2L2HIF7DUGZJGMRUFKXELGGYFMHF76UO2AYBG3K4YLWR3FKC2Q&#39;;

let nc = await connect({
    url: server.nats,
    nkey: &#39;UD6OU4D3CIOGIDZVL4ANXU3NWXOW5DCDE2YPZDBHPBXCVKHSODUA4FKI&#39;,
    nonceSigner: function (nonce) {
        const sk = fromSeed(Buffer.from(seed));
        return sk.sign(Buffer.from(nonce));
    }
});
</code></pre>
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