https://github.com/paragonie/blakechain

Hash chains built with BLAKE2b
https://github.com/paragonie/blakechain

Last synced: 6 months ago
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Hash chains built with BLAKE2b

• Host: GitHub
• URL: https://github.com/paragonie/blakechain
• Owner: paragonie
• License: mit
• Created: 2017-06-23T21:20:11.000Z (over 8 years ago)
• Default Branch: master
• Last Pushed: 2024-05-08T17:34:12.000Z (over 1 year ago)
• Last Synced: 2025-07-19T19:25:02.715Z (6 months ago)
• Language: PHP
• Size: 25.4 KB
• Stars: 22
• Watchers: 6
• Forks: 5
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# Blakechain

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Blakechain is a simple hash-chain data structure based on the BLAKE2b hash function.

Includes:

* The `Blakechain` implementation, which chains together `Node` objects

* A runtime `Verifier` class that validates the self-consistency of an entire chain

  (or a subset of an entire chain)

Blakechain is not a blockchain. You probably [don't need a blockchain](https://tonyarcieri.com/on-the-dangers-of-a-blockchain-monoculture).

Blakechain provides the data structure used in [Chronicle](https://github.com/paragonie/chronicle).

### How Blakechain Works

The hash of each message is a keyed BLAKE2b hash, where the key of this message

is the hash of the previous message.

Recursively:

    $hash[$n] = sodium_crypto_generichash(

        $data[$n],

        $hash[$n - 1]

    );