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// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
use digest::{Digest, DynDigest};
use wasm_bindgen::prelude::*;
#[wasm_bindgen]
pub struct DenoHash {
inner: Box<dyn DynDigest>,
}
#[wasm_bindgen]
pub fn create_hash(algorithm: &str) -> Result<DenoHash, JsValue> {
let hash: Option<Box<dyn DynDigest>> = match algorithm {
"md2" => Some(Box::new(md2::Md2::new())),
"md4" => Some(Box::new(md4::Md4::new())),
"md5" => Some(Box::new(md5::Md5::new())),
"ripemd160" => Some(Box::new(ripemd160::Ripemd160::new())),
"ripemd320" => Some(Box::new(ripemd320::Ripemd320::new())),
"sha1" => Some(Box::new(sha1::Sha1::new())),
"sha224" => Some(Box::new(sha2::Sha224::new())),
"sha256" => Some(Box::new(sha2::Sha256::new())),
"sha384" => Some(Box::new(sha2::Sha384::new())),
"sha512" => Some(Box::new(sha2::Sha512::new())),
"sha3-224" => Some(Box::new(sha3::Sha3_224::new())),
"sha3-256" => Some(Box::new(sha3::Sha3_256::new())),
"sha3-384" => Some(Box::new(sha3::Sha3_384::new())),
"sha3-512" => Some(Box::new(sha3::Sha3_512::new())),
"keccak224" => Some(Box::new(sha3::Keccak224::new())),
"keccak256" => Some(Box::new(sha3::Keccak256::new())),
"keccak384" => Some(Box::new(sha3::Keccak384::new())),
"keccak512" => Some(Box::new(sha3::Keccak512::new())),
_ => None,
};
if let Some(h) = hash {
Ok(DenoHash { inner: h })
} else {
let err_msg = format!("unsupported hash algorithm: {}", algorithm);
Err(JsValue::from_str(&err_msg))
}
}
#[wasm_bindgen]
pub fn update_hash(hash: &mut DenoHash, data: &[u8]) {
hash.inner.update(data)
}
#[wasm_bindgen]
pub fn digest_hash(hash: &mut DenoHash) -> Box<[u8]> {
hash.inner.finalize_reset()
}
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