[API reference](https://evolu.dev/docs/api-reference) › [@evolu/common](https://evolu.dev/docs/api-reference/common) › [Crypto](https://evolu.dev/docs/api-reference/common/Crypto) › Entropy24

```ts
type Entropy24 = Uint8Array<ArrayBufferLike> &
  import("./Brand.ts").Brand<"Entropy"> &
  import("./Brand.ts").Brand<"Length24">;
```

Defined in: [packages/common/src/Crypto.ts:90](https://github.com/evoluhq/evolu/blob/037c390af081e9944d616ff298a729515c5c5ab7/packages/common/src/Crypto.ts#L90)