https://github.com/jpfleury/base64url
Bash encoder/decoder for the base64url format
https://github.com/jpfleury/base64url
base64 base64-decoding base64-encoding base64decode base64decoder base64encode base64encoder base64url bash shell shell-script shell-scripting shell-scripts
Last synced: 14 days ago
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Bash encoder/decoder for the base64url format
- Host: GitHub
- URL: https://github.com/jpfleury/base64url
- Owner: jpfleury
- License: gpl-3.0
- Created: 2023-03-02T23:19:22.000Z (almost 3 years ago)
- Default Branch: main
- Last Pushed: 2025-05-24T17:19:08.000Z (8 months ago)
- Last Synced: 2025-05-24T18:28:42.833Z (8 months ago)
- Topics: base64, base64-decoding, base64-encoding, base64decode, base64decoder, base64encode, base64encoder, base64url, bash, shell, shell-script, shell-scripting, shell-scripts
- Language: Shell
- Homepage:
- Size: 16.6 KB
- Stars: 0
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: COPYING
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README
# base64url
base64url is a Bash encoder/decoder for the base64url format
(base64 with an URL and filename safe alphabet). It's described
in the [RFC 4648 (section 5)](https://www.rfc-editor.org/rfc/rfc4648#section-5):
> This encoding may be referred to as "base64url". This encoding
> should not be regarded as the same as the "base64" encoding and
> should not be referred to as only "base64". Unless clarified
> otherwise, "base64" refers to the base 64 in the previous section.
>
> This encoding is technically identical to the previous one, except
> for the 62:nd and 63:rd alphabet character, as indicated in Table 2.
Here's the table (Value / Encoding):
| V E | V E | V E | V E |
| :--- | :--- | :--- | :--------------- |
| 0 A | 17 R | 34 i | 51 z |
| 1 B | 18 S | 35 j | 52 0 |
| 2 C | 19 T | 36 k | 53 1 |
| 3 D | 20 U | 37 l | 54 2 |
| 4 E | 21 V | 38 m | 55 3 |
| 5 F | 22 W | 39 n | 56 4 |
| 6 G | 23 X | 40 o | 57 5 |
| 7 H | 24 Y | 41 p | 58 6 |
| 8 I | 25 Z | 42 q | 59 7 |
| 9 J | 26 a | 43 r | 60 8 |
| 10 K | 27 b | 44 s | 61 9 |
| 11 L | 28 c | 45 t | 62 - (minus) |
| 12 M | 29 d | 46 u | 63 _ (underline) |
| 13 N | 30 e | 47 v | |
| 14 O | 31 f | 48 w | |
| 15 P | 32 g | 49 x | |
| 16 Q | 33 h | 50 y | (pad) = |
## Installation
- Get the [latest version of `base64url` on GitHub](https://github.com/jpfleury/base64url/archive/refs/heads/main.zip).
- Unzip the downloaded archive and locate the folder `base64url-main`.
- Open a terminal and source the function: `source /path/to/base64url-main/base64url`
## Usage
`base64url` can now be invoked directly from the terminal. It supports encoding, decoding, and format conversions between base64 and base64url. For details and examples, run `base64url -h`.
## License
Copyright (C) 2023-2024 Jean-Philippe Fleury
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see .