How to use ring crate in Rust cryptography

Crates/Ring

2026-04-17T12:05:42+00:00

Add the ring crate to Cargo.toml and import specific modules like digest to perform cryptographic operations securely.

Add the ring crate to your Cargo.toml dependencies and import the specific cryptographic module you need, such as digest or signature, to perform operations.

[dependencies]
ring = "0.17"

use ring::digest::{Context, SHA256, Digest};

fn main() {
    let mut ctx = Context::new(&SHA256);
    ctx.update(b"Hello, world!");
    let digest = ctx.finish();
    println!("Hash: {:?}", digest.as_ref());
}