# js-base64-ct

**Repository Path**: mirrors_jedisct1/js-base64-ct

## Basic Information

- **Project Name**: js-base64-ct
- **Description**: Safe Base64 encoding/decoding in pure JavaScript.
- **Primary Language**: Unknown
- **License**: MIT
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2021-07-11
- **Last Updated**: 2025-09-13

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

# Safe Base64 codecs for JavaScript

A pure JavaScript port of the libsodium base64 codecs.

Features:

* Supports traditional and URL-safe variants, with or without padding
* Rejects non-canonical padding
* Constant-time (best-effort), suitable for encoding/decoding secrets
* Characters can be ignored by the decoder

Available on NPM: [base64-ct](https://www.npmjs.com/package/base64-ct)

Usage:

- Traditional alphabet, padding:

```js
const codec = new Base64(true);
const b64 = codec.encode(data);
const data2 = codec.decode(b64);
```

- Traditional alphabet, no padding:

```js
const codec = new Base64(false);
const b64 = codec.encode(data);
const data2 = codec.decode(b64);
```

- URL-safe, no padding:

```js
const codec = new Base64UrlSafe(false);
const b64 = codec.encode(data);
const data2 = codec.decode(b64);
```

- URL-safe, padding, ignoring spaces and `\n`:

```js
const codec = new Base64UrlSafe(true, " \n");
const b64 = codec.encode(data);
const data2 = codec.decode(b64);
```