https://github.com/vlayer-xyz/noir-base64

Base64 encoding for Aztec's noir language
https://github.com/vlayer-xyz/noir-base64

Last synced: about 1 month ago
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Base64 encoding for Aztec's noir language

• Host: GitHub
• URL: https://github.com/vlayer-xyz/noir-base64
• Owner: vlayer-xyz
• License: mit
• Created: 2023-11-19T05:42:02.000Z (about 1 year ago)
• Default Branch: main
• Last Pushed: 2024-01-03T14:56:06.000Z (12 months ago)
• Last Synced: 2024-08-03T16:09:54.602Z (5 months ago)
• Language: Rust
• Homepage:
• Size: 25.4 KB
• Stars: 12
• Watchers: 2
• Forks: 2
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • Changelog: CHANGELOG.md
  • License: LICENSE

Awesome Lists containing this project

• awesome-noir - Base64 - a library for base64 encoding (Libraries / Data Type Manipulation)

README

        
# Noir base64

[![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT) [![Nargo Test 🌌](https://github.com/zkworks-xyz/noir-base64/actions/workflows/test.yaml/badge.svg)](https://github.com/zkworks-xyz/noir-base64/actions/workflows/test.yaml)

**Noir base64** contains functions for base64 string and `u8` array encoding for Aztec's **Noir** language

## Installation

In your `Nargo.toml` file, add the following dependency:

```toml

[dependencies]

base64 = { tag = "v0.1.2", git = "https://github.com/zkworks-xyz/noir-base64" }

```

## Usage

```rust

use dep::base64;

fn main() {

    let result: [u8; 8] = base64::encode_str("foobar", [0; 8]);

}

```

## API

Library exposes two functions:

```rust

pub fn encode_str(input: str, mut result: [u8; M]) -> [u8; M]

```

- `input` - string to encode. Max string length is 600.

- `result` - array of bytes to store result in. It should have a proper size otherwise function will fail on assert. 

    Due to Noir language limitations result size need to be known at compile time and should be calculated by user.

    Value of this parameter are irrelevant, only size matters.

- Returns `result` array with encoded string. Function result is also stored in mutable `result` array argument.

```rust

pub fn encode(input: [u8; N], mut result: [u8; M], url_safe: bool) -> [u8; M]

```

- `input` - array of bytes to encode. Max array size is 600.

- `result` - array of bytes to store result in. It should have a proper size otherwise function will fail on assert.

  Due to Noir language limitations result size need to be known at compile time and should be calculated by user.

  Values in this array are irrelevant, only size matters.

- `url_safe` - if `true` then `+` and `/` characters will be replaced with `-` and `_` respectively ([RFC4648](https://datatracker.ietf.org/doc/html/rfc4648#section-5))

- Returns `result` array with encoded string. Function result is also stored in mutable `result` array argument.

Base64 **decoding** is not supported yet. Will be implemented in future releases.

## Example project

Directory [examples/base64_example/](https://github.com/zkworks-xyz/noir-base64/tree/main/examples/base64_example) contains example Noir project with `base64` library as dependency.

## License

This project is licensed under the MIT License. See the [LICENSE](https://github.com/zkworks-xyz/noir-base64/blob/main/LICENSE) file for details.