multiformats
@multiformats/blake2
Multiformats BLAKE2 implementations
Table of contents
Install
$ npm i @multiformats/blake2MultihashHasherss are exported from this library, they produce MultihashDigests. Details about these can be found in the multiformats multihash interface definitions.
import * as Block from 'multiformats/block'
import * as codec from '@ipld/dag-cbor'
import { blake2b256 as hasher } from '@multiformats/blake2/blake2b'
async function run () {
const value = { hello: 'world' }
const block = await Block.encode({ value, hasher, codec })
console.log(block.cid)
// -> CID(bafy2bzacedtxqx7k666ugf5mmagr2fxmbpfncbcji5jfg5uduausgb62y3av4)
}
run().catch(console.error)Usage
The @multiformats/blake2/blake2b package exports blake2bX MultihashHashers, where X is the output length in bits. The Multicodecs table defines 64 different output lengths for BLAKE2b, from 8 to 512.
The @multiformats/blake2/blake2s package exports blake2sX MultihashHashers, where X is the output length in bits. For BLAKE2s, there are 32 different output lengths, from 8 to 256.
e.g. blake2b-256, multicodec code 0xb220, may be imported as:
import { blake2b256 } from '@multiformats/blake2/blake2b'while blake2s-256, multicodec code 0xb260, may be imported as:
import { blake2s256 } from '@multiformats/blake2/blake2s'License
Licensed under either of
- Apache 2.0, (LICENSE-APACHE / http://www.apache.org/licenses/LICENSE-2.0)
- MIT (LICENSE-MIT / http://opensource.org/licenses/MIT)
Contribution
Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.