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33 lines
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<title>Crypto.base64 — Ludic</title>
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<meta name="description" content="Standard base64 (RFC 4648) of a string's bytes.">
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<header class="nav"><div class="wrap nav-in"><a class="brand" href="index.html"><span class="logo">L</span> Ludic</a><button class="nav-toggle" aria-label="Toggle menu" aria-expanded="false">☰</button><nav class="nav-links"><a href="index.html">Home</a><a href="api.html">API Reference</a><a class="nav-cta" href="https://git.workshopsoft.io/workshopsoft/ludic">Source ↗</a></nav></div></header>
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<div class="crumbs"><a href="api.html">API Reference</a> <span>›</span> <a href="ns-crypto.html">Crypto</a> <span>›</span> <span class="here">Crypto.base64</span></div>
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<span class="kind-badge kind-method">method</span>
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<h1 id="top">Crypto.base64</h1>
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<code class="sig">Crypto.base64(s) -> string</code>
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<div class="desc"><p>Encodes the bytes of <code>s</code> as standard base64 (RFC 4648, the <code>A–Z a–z 0–9 + /</code> alphabet with <code>=</code> padding). Base64 turns arbitrary bytes into printable ASCII, which is what you want when a digest, key, or binary blob has to travel through a text-only channel — a JSON field, a URL-safe token wrapper, a config file, a log line. It is an *encoding*, not encryption: it hides nothing and adds no integrity. Pair it with <a href="crypto-hmac_sha256"><code>Crypto.hmac_sha256</code></a> when the payload must also be tamper-evident.</p><p>The output length is always a multiple of four; a one- or two-byte remainder in the input is padded with <code>=</code>.</p></div>
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<div class="params"><h2>Parameters</h2><div class="param" id="param-s"><code class="pname">s</code><span class="pdesc">the string whose bytes are encoded</span></div></div>
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<div class="examples"><h2>Example</h2><pre data-lang="ludic">program Encode {
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entry {
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print(Crypto.base64("foobar")) # Zm9vYmFy
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print(Crypto.base64("f")) # Zg==
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}
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}</pre></div>
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