Function multi_hash 

pub fn multi_hash<D: Digest>(data: &[u8], levels: usize) -> Vec<u8> 

Multi-level hash (hash of hash).

This function applies hashing multiple times, hashing the result of the previous hash. This can be useful for certain cryptographic constructions.

Type Parameters

• D - A hasher type implementing Digest

Arguments

• data - The data to hash
• levels - The number of times to hash (0 means no hashing, 1 means hash once, etc.)

Returns

The final hash output after applying hashing levels times

Example

use rust_bottle::hash::multi_hash;
use sha2::Sha256;

let data = b"Hello, world!";
let hash = multi_hash::<Sha256>(data, 3); // Hash 3 times