Struct crypto_wasi::Hash

pub struct Hash { /* private fields */ }

Equivalent to crypto.Hash

Example:

use crate::Hash;

let mut h = Hash::create("sha256")?;
h.update("abc")?;
h.update("def")?;
let res = h.digest()?;

Supported algorithm:

• SHA-256
• SHA-512
• SHA-512/256

Implementations

impl Hash

pub fn create(alg: &str) -> Result<Self, CryptoErrno>

Equivalent to createHash

pub fn update(&mut self, data: impl AsRef<[u8]>) -> Result<(), CryptoErrno>

Updates the Hash content with the given data. This can be called many times with new data as it is streamed.

pub fn copy(&self) -> Result<Self, CryptoErrno>

Creates a new Hash object that contains a deep copy of the internal state of the current Hash object.

pub fn digest(&mut self) -> Result<Vec<u8>, CryptoErrno>

Calculates the HASH digest of all of the data passed using update. The Hash object SHOULD NOT be used again after digest has been called. Unlike nodejs, you can still call update to append content and digest to compute for all content actually in WasmEdge’s implementation, but it’s NOT RECOMMENDED.

pub fn digest_into(&mut self, buf: impl AsMut<[u8]>) -> Result<(), CryptoErrno>

As same as digest but directly write result to buf

Trait Implementations

impl Clone for Hash

fn clone(&self) -> Self

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Drop for Hash

fn drop(&mut self)

Executes the destructor for this type.