# blake2 Create blake2b values with specified bitlengths - [blake2AsHex](#blake2ashex) Creates a blake2b hex from the input. - [blake2AsHex128](#blake2ashex128) Creates a blake2b hex with 128-bits from the input. - [blake2AsHex256](#blake2ashex256) Creates a blake2b hex with 256-bits from the input. - [blake2AsHex512](#blake2ashex512) Creates a blake2b hex with 512-bits from the input. ## blake2AsHex Creates a blake2b hex from the input. ```js blake2AsHex (data: Uint8Array, bitLenght: number = 64): string ``` From a `Uint8Array` input, create the blake2b and return the result as a hex string with the specified `bitLength`. ```js import { blake2AsHex } from '@polkadot/util-crypto'; blake2AsHex('abc')) // => 0xba80a53f981c4d0d ``` ## blake2AsHex128 Creates a blake2b hex with 128-bits from the input. ```js blake2AsHex128 (data: Buffer): string ``` From a `Uint8Array` input, create the blake2b and return the result as a hex string with 128 bits. ```js import { blake2AsHex128 } from '@polkadot/util-crypto'; blake2AsHex128('abc')) // => 0x44bc2cf5ad770999 ``` ## blake2AsHex256 Creates a blake2b hex with 256-bits from the input. ```js blake2AsHex256 (data: Buffer): string ``` From a `Uint8Array` input, create the blake2b and return the result as a hex string with 256 bits. ```js import { blake2AsHex256 } from '@polkadot/util-crypto'; blake2AsHex256('abc')) // => 0x44bc2cf5ad770999 ``` ## blake2AsHex512 Creates a blake2b hex with 512-bits from the input. ```js blake2AsHex512 (data: Buffer): string ``` From a `Uint8Array` input, create the blake2b and return the result as a hex string with 512 bits. ```js import { blake2AsHex512 } from '@polkadot/util-crypto'; blake2AsHex512('abc')) // => 0x44bc2cf5ad770999 ```