AC Filehash

Create a hash from a file. The source can be a local file, ArrayBuffer, URL or an AWS s3 bucket/key.

This hash is created using 3 sections of the file - one at the beginning, one in the middle and one at the end. This way, a hash can be easily and fast created even for large files.

Usage

NodeJs

From local file

const acfh = require('ac-filehash')

let test = async () => {
  let result = await acfh.getHash({ 
    filePath: './test/BigBuckBunny.mp4'
  })
  // RESPONSE
  {
    error: undefined,
    type: 'file',
    hash: 'f9ccc07b4959f5698fd30913743aacd5',
    fileSize: 158008374
  }
}
test()

From URL

const acfh = require('ac-filehash')

let test = async () => {
  let result = await acfh.getHash({ 
    url: 'http://commondatastorage.googleapis.com/gtv-videos-bucket/sample/BigBuckBunny.mp4'
  })
  // RESPONSE
  {
    error: undefined,
    type: 'url',
    hash: 'f9ccc07b4959f5698fd30913743aacd5',
    fileSize: 158008374
  }
}
test()

From AWS S3

If no credentials are sent, the one's from your local AWS configuration are used.

const acfh = require('ac-filehash')

let test = async () => {
  let result = await acfh.getHash({
    bucket: 'mybucket',
    key: 'mykey',
    // optional credentials
    credentials: {
      accessKeyId: 'ABC',
      secretAccessKey: 'SECRET',
      // optional session token if you are using temporary credentials
      sessionToken: 'token'
    }
  })
  // RESPONSE
  {
    error: undefined,
    type: 's3',
    hash: 'f9ccc07b4959f5698fd30913743aacd5',
    fileSize: 158008374
  }

 
}
test()

Browser

const acfh = require('ac-filehash/browser')

const params = {
  url: 'http://commondatastorage.googleapis.com/gtv-videos-bucket/sample/BigBuckBunny.mp4'
}

let test = async () => {
  let result = await acfh.getHash({ 
    url: 'http://commondatastorage.googleapis.com/gtv-videos-bucket/sample/BigBuckBunny.mp4'
  })
  // RESPONSE
  {
    error: undefined,
    type: 'url',
    hash: 'f9ccc07b4959f5698fd30913743aacd5',
    fileSize: 158008374
  }

  let result = await acfh.getHash({ 
    buffer: some_ArrayBuffer //<- e.g. ArrayBuffer generated from file through input field
  })
  // RESPONSE
  {
    error: undefined,
    type: 'buffer',
    hash: 'f9ccc07b4959f5698fd30913743aacd5',
    fileSize: 158008374
  }
}
test()

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License

MIT License Copyright © 2009-present, AdmiralCloud AG