# butt64

Based on [is-canonical-base64] but modified to generate regular
expressions for url-safe base64, as described in [ssb-uri spec] :

> URI-safe Base64 is equivalent to Base64 where + characters are replaced with -, and / characters are replaced with _.


## Example Usage

```javascript
const Butt64 = require('butt64')

const regex = new Butt64('ssb:feed/classic/, null, 32)

regex.test('ssb:feed/classic/-oaWWDs8g73EZFUMfW37R_ULtFEjwKN_DczvdYihjbU=')
// => true
```



## API

### `new Butt64(prefix, suffix, length) => RegExp`

All arguments are optional
- `prefix` *String* or *Pattern* to require at the beginning of string
- `suffix` *String* or *Pattern* pattern to require at the end of string
- `length` *Integer* the length of the data in bytes you're expected to be encoded

### `Butt64.bufferToButt64(buffer) => string`

Converts a buffer ing a base64 encoded string.


### `Butt64.butt64ToBuffer(string) => buffer`

Converts a butt64 encoded string into a buffer.


## License

MIT


[is-canonical-base64]: https://github.com/dominictarr/is-canonical-base64
[ssb-uri spec]: https://github.com/ssbc/sips/blob/master/001.md


test wether a butt64 string will serialize the same after parsing. 

butt64

test wether a butt64 string will serialize the same after parsing

mixmix

(Experimental) An ambiguous license classifier was found.

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Ambiguous License Classifier

Source files are encoded using a non-standard text encoding.

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Package version is not a valid semantic version (semver).

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Bad semver

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Bad dependency semver

Source files contain bidirectional unicode control characters. This could indicate a Trojan source supply chain attack. See: trojansource.codes for more information.

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Bidirectional unicode control characters

This package has multiple bin scripts with the same name. This can cause non-deterministic behavior when installing or could be a sign of a supply chain attack.

What is bin script confusion?

Bin script confusion

Semantic versions published out of chronological order.

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Chronological version anomaly

Project maintainer's SSH key has been compromised.

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Compromised SSH key

(Experimental) Copyleft license information was found.

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Copyleft License

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Title

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Debug access

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Deprecated

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Deprecated license

Package name is similar to other popular packages and may not be the package you want.

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Possible typosquat attack

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Dynamic require

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File dependency

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Filesystem access

Package has a dependency with a floating version range. This can cause issues if the dependency publishes a new major version.

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Wildcard dependency

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Git dependency

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GitHub dependency

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High entropy strings

Contains unicode homoglyphs which can be used in supply chain confusion attacks.

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Unicode homoglyphs

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HTTP dependency

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Install scripts

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Invalid manifest file

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Invisible chars

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License exception

This package is not allowed per your license policy. Review the package's license to ensure compliance.

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License Policy Violation

Contains long string literals, which may be a sign of obfuscated or packed code.

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Long strings

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Major refactor

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Known malware

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Manifest confusion

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Low CVE

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(Experimental) A package's licensing information has fine-grained problems.

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Network access

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No contributors or author data

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No bug tracker

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No README

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No repository

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No tests

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No v1

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No website

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Non OSI license

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butt64

butt64

Example Usage

API

new Butt64(prefix, suffix, length) => RegExp

Butt64.bufferToButt64(buffer) => string

Butt64.butt64ToBuffer(string) => buffer

License

Related posts

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NIST’s New Password Guidelines Will Eliminate Periodic Changes and Special Character Requirements

`new Butt64(prefix, suffix, length) => RegExp`

`Butt64.bufferToButt64(buffer) => string`

`Butt64.butt64ToBuffer(string) => buffer`