paragonie / blakechain
Hash chain using BLAKE2b
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Requires
- php: ^7|^8
- paragonie/constant_time_encoding: ^2|^3
- paragonie/sodium_compat: ^1.21|^2
Requires (Dev)
- phpunit/phpunit: ^5|^6|^7|^8|^9
- vimeo/psalm: ^3|^4
README
Blakechain is a simple hash-chain data structure based on the BLAKE2b hash function.
Includes:
- The
Blakechainimplementation, which chains togetherNodeobjects - A runtime
Verifierclass 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.
Blakechain provides the data structure used in 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]
);