open-index/open-npm huggingface dataset:
npm package: @rvagg/blake2
Description: BLAKE2 native add-on for Node.js
Author: Rod
Latest version: 0.0.2

# @rvagg/blake2 Node.js BLAKE2 addon

Supports [BLAKE2b and BLAKE2s](https://www.blake2.net/) using the [SSE optimized reference implementation](https://github.com/BLAKE2/BLAKE2/tree/master/sse).

See https://github.com/dcposch/blakejs for a pure JavaScript implementation that works in the browser. This implementation is for Node.js only and requires a compile toolchain on a supported platform.

See https://github.com/vrza/node-blake2 for an alternative addon for BLAKE2 that also supports BLAKE2bp and BLAKE2sp, using the same reference implementation, and also providing the full streaming API to match the core `'crypto'` hash API.

Use this implementation if you have simple needs, guaranteed Node.js usage (no browser), and don't need additional layers of fluff.

## API

* `blake2b(input:<Buffer>, key:<Buffer|null>, outputLength:number)`
* `blake2s(input:<Buffer>, key:<Buffer|null>, outputLength:number)`

```js
const { blake2b, blake2s } = require('@rvagg/blake2')

console.log(blake2b(Buffer.from('abc'), null, 64).toString('hex'))
// -> ba80a53f981c4d0d6a2797b69f12f6e94c212f14685ac4b74b12bb6fdbffa2d17d87c5392aab792dc252d5de4533cc9518d38aa8dbf1925ab92386edd4009923'

console.log(blake2b(Buffer.from('abc'), null, 64).toString('hex'))
// -> 508c5e8c327c14e2e1a72ba34eeb452f37458b209ed63a294d999b4c86675982
```

## License and Copyright

Copyright 2020 Rod Vagg

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

### BLAKE2 reference sources

Optimized BLAKE2 C implementation code is copied without modification from https://github.com/BLAKE2/BLAKE2 (sse).
npm package: @rvagg/car-to-schema
Description: Read a CAR file and describe its blocks using IPLD Schemas
Author: Rod
Latest version: 0.1.0

# @rvagg/car-to-schema

Read a CAR file and describe its blocks using [IPLD Schemas](https://specs.ipld.io/schemas/).

## Usage

### Install

```sh
$ npm install @rvagg/car-to-schema -g
```

### Run

```sh
$ car-to-schema <path-to-CAR-file> --output=<output/dir> [--library=<schema/library/dir>]
```

Unqiue found schemas will be printed to stdout as well as written to files in the current working directory named `schema_X.ipldsch` (the human-readable text form) and `schema_X.json` (the JSON object descriptor form), where `X` is the unique schema number. A `schema_summary.csv` will also be written with a mapping of the schema to the number of blocks found matching that schema.

### Library

If you have existing Schemas to match against, supply a directory path with `--library` and the Schemas found in that directory will be included in the matching process. Schema files should end with `.ipldsch` (or the object form can be `.json`).

The name of each Schema file in the library directory should be the name of the root type in the Schema. e.g. A Schema Schema describing the DAG-PB structure might be named `PBNode.ipldsch` and include a `type PBNode`. This type will be matched against the root found in the block.

## Limitations

Currently only supports the following codecs for blocks:

* DAG-CBOR
* DAG-JSON
* DAG-PB
* raw
* json

See also the [Limitations section of **ipld-schema-describer**](https://github.com/rvagg/js-ipld-schema-describer#limitations) for the limitations of Schema inference on objects.

## License & Copyright

Copyright 2020 Rod Vagg

Licensed under Apache 2.0 ([LICENSE-APACHE](LICENSE-APACHE) / http://www.apache.org/licenses/LICENSE-2.0)